reading of multidomain stl files into separate Poly_Triangulation objects (draft)

2025-08-09 13:22:24 +03:00 · 2018-06-28 17:46:25 +03:00
7754 changed files with 232036 additions and 245464 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,14 @@

 # standard directories for derived files in CASROOT
 /.adm
+/sun
 /lin
 /mac
+/ao1
+/sil
 /wnt
 /doc
+/drv
 /inc
 /work

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,7 +63,7 @@ set (BUILD_RESOURCES OFF CACHE BOOL "${BUILD_RESOURCES_DESCR}")

 # single-configuration generator
 set (SINGLE_GENERATOR OFF)
-if (DEFINED CMAKE_BUILD_TYPE)
+if (CMAKE_BUILD_TYPE)
  set (SINGLE_GENERATOR ON)
 endif()

@@ -86,11 +86,6 @@ if (BUILD_WITH_DEBUG)
  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:DEBUG>:OCCT_DEBUG>)
 endif()

-# option disabling OCCT exceptions in Release builds (No_Exception)
-if (NOT DEFINED BUILD_RELEASE_DISABLE_EXCEPTIONS)
-  set (BUILD_RELEASE_DISABLE_EXCEPTIONS ON CACHE BOOL "${BUILD_RELEASE_DISABLE_EXCEPTIONS_DESCR}")
-endif()
-
 # option to enable or disable use of precompiled headers
 if (NOT DEFINED BUILD_USE_PCH)
  set (BUILD_USE_PCH OFF CACHE BOOL "${BUILD_USE_PCH_DESCR}")
@@ -633,26 +628,6 @@ else()
  OCCT_CHECK_AND_UNSET ("INSTALL_TBB")
 endif()

-# RapidJSON
-# search for CSF_RapidJSON variable in EXTERNLIB of each being used toolkit
-OCCT_IS_PRODUCT_REQUIRED (CSF_RapidJSON CAN_USE_RAPIDJSON)
-if (CAN_USE_RAPIDJSON)
-  set (USE_RAPIDJSON OFF CACHE BOOL "${USE_RAPIDJSON_DESCR}")
-
-  if (USE_RAPIDJSON)
-    add_definitions (-DHAVE_RAPIDJSON)
-    OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/rapidjson")
-  else()
-    OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_RAPIDJSON")
-    OCCT_CHECK_AND_UNSET ("INSTALL_RAPIDJSON")
-  endif()
-else()
-  OCCT_CHECK_AND_UNSET ("USE_RAPIDJSON")
-
-  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_RAPIDJSON")
-  OCCT_CHECK_AND_UNSET ("INSTALL_RAPIDJSON")
-endif()
-
 # EIGEN
 if (CAN_USE_EIGEN)
  set (USE_EIGEN OFF CACHE BOOL "${USE_EIGEN_DESCR}")
@@ -708,18 +683,6 @@ else()
  OCCT_CHECK_AND_UNSET ("3RDPARTY_FLEX_EXECUTABLE")
 endif()

-# qt for inspector and samples
-if (BUILD_Inspector OR BUILD_SAMPLES_QT)
-  # check qt 3rdparty path
-  add_definitions (-DHAVE_QT)
-  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/qt")
-  message (STATUS "Info: Qt is used by OCCT")
-else()
-  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_QT")
-  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_TQTMALLOC")
-  OCCT_CHECK_AND_UNSET ("INSTALL_QT")
-endif()
-
 # check all 3rdparty include paths
 string (REGEX REPLACE ";" " " 3RDPARTY_NOT_INCLUDED "${3RDPARTY_NOT_INCLUDED}")
 if (3RDPARTY_NOT_INCLUDED)
@@ -807,6 +770,17 @@ else()
  set (SCRIPT_EXT sh)
 endif()

+if (BUILD_Inspector OR BUILD_SAMPLES_QT)
+  # check qt 3rdparty path
+  add_definitions (-DHAVE_QT)
+  OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/qt")
+  message (STATUS "Info: Qt is used by OCCT")
+else()
+  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_QT")
+  OCCT_CHECK_AND_UNSET_GROUP ("3RDPARTY_TQTMALLOC")
+  OCCT_CHECK_AND_UNSET ("INSTALL_QT")
+endif()
+
 # OCCT tools
 # include the patched or original list of tools
 # list <TOOLNAME>_TOOLKITS is created foreach tool and contains its toolkits
@@ -925,22 +899,11 @@ if (BUILD_SAMPLES_MFC OR BUILD_SAMPLES_QT)
  OCCT_COPY_FILE_OR_DIR    ("adm/templates/sample.${SCRIPT_EXT}" "${CMAKE_BINARY_DIR}")
 endif()

-if (WIN32)
-  # env script for draw in building environment
-  OCCT_CONFIGURE ("adm/templates/env.${SCRIPT_EXT}.in" "env.${SCRIPT_EXT}")
-  # install env script
-  install (FILES "${CMAKE_BINARY_DIR}/env.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SCRIPT}")
-  # copy build.bat and install.bat scripts to CMake binary folder
-  OCCT_COPY_FILE_OR_DIR ("adm/templates/build.bat" "${CMAKE_BINARY_DIR}")
-  OCCT_COPY_FILE_OR_DIR ("adm/templates/install.bat" "${CMAKE_BINARY_DIR}")
-else()
-  set (SUB_ENV_NAME "env.${SCRIPT_EXT}")
-  set (SUB_ENV_BUILD_NAME "env.install.${SCRIPT_EXT}")
-  # install env script
-  OCCT_CONFIGURE_AND_INSTALL ("adm/templates/env.install.${SCRIPT_EXT}.in" "${SUB_ENV_BUILD_NAME}" "${SUB_ENV_NAME}" "${INSTALL_DIR_SCRIPT}")
-  # env script for draw in building environment
-  OCCT_CONFIGURE ("adm/templates/env.build.${SCRIPT_EXT}.in" "env.${SCRIPT_EXT}")
-endif()
+# env script for draw in building environment
+OCCT_CONFIGURE ("adm/templates/env.${SCRIPT_EXT}.in" "env.${SCRIPT_EXT}")
+
+# install env script
+install (FILES "${CMAKE_BINARY_DIR}/env.${SCRIPT_EXT}" DESTINATION "${INSTALL_DIR_SCRIPT}")

 # copy DrawAppliInit from OCCT source to build directory
 if (NOT EXISTS "${CMAKE_BINARY_DIR}/DrawAppliInit")
--- a/adm/.gitignore
+++ b/adm/.gitignore
@@ -1 +0,0 @@
-/build-*
--- a/adm/MODULES
+++ b/adm/MODULES
@@ -3,5 +3,5 @@ ModelingData TKG2d TKG3d TKGeomBase TKBRep
 ModelingAlgorithms TKGeomAlgo TKTopAlgo TKPrim TKBO TKBool TKHLR TKFillet TKOffset TKFeat TKMesh TKXMesh TKShHealing
 Visualization TKService TKV3d TKOpenGl TKMeshVS TKIVtk TKD3DHost
 ApplicationFramework TKCDF TKLCAF TKCAF TKBinL TKXmlL TKBin TKXml TKStdL TKStd TKTObj TKBinTObj TKXmlTObj TKVCAF
-DataExchange TKXSBase TKSTEPBase TKSTEPAttr TKSTEP209 TKSTEP TKIGES TKXCAF TKXDEIGES TKXDESTEP TKSTL TKVRML TKXmlXCAF TKBinXCAF TKRWMesh
+DataExchange TKXSBase TKSTEPBase TKSTEPAttr TKSTEP209 TKSTEP TKIGES TKXCAF TKXDEIGES TKXDESTEP TKSTL TKVRML TKXmlXCAF TKBinXCAF
 Draw TKDraw TKTopTest TKViewerTest TKXSDRAW TKDCAF TKXDEDRAW TKTObjDRAW TKQADraw TKIVtkDraw DRAWEXE
--- a/adm/RESOURCES
+++ b/adm/RESOURCES
@@ -3,7 +3,6 @@ StdResource
 SHMessage
 Textures
 Shaders
-XRResources
 XSMessage
 XSTEPResource
 XmlOcafResource
--- a/adm/UDLIST
+++ b/adm/UDLIST
@@ -105,10 +105,8 @@ n BRepIntCurveSurface
 n BRepLib
 n BRepMAT2d
 n BRepMesh
-n BRepMeshData
 n BRepOffset
 n BRepOffsetAPI
-n BRepPreviewAPI
 n BRepPrim
 n BRepPrimAPI
 n BRepProj
@@ -143,8 +141,6 @@ n HLRTopoBRep
 n HLRAppli
 n Hatch
 n HatchGen
-n IMeshData
-n IMeshTools
 n IntCurve
 n IntCurveSurface
 n IntCurvesFace
@@ -202,10 +198,8 @@ n InterfaceGraphic
 n AIS
 n Aspect
 n DsgPrs
-n PrsDim
 n Graphic3d
 n Image
-n Media
 n MeshVS
 n OpenGl
 n D3DHost
@@ -216,13 +210,13 @@ n SelectBasics
 n SelectMgr
 n StdPrs
 n StdSelect
+n TColQuantity
 n V3d
 n WNT
 n Xw
 n Cocoa
 r Textures
 r Shaders
-r XRResources
 t TKMeshVS
 t TKOpenGl
 t TKD3DHost
@@ -441,27 +435,3 @@ n Geom2dEvaluator
 t TKVCAF
 n XCAFView
 n XCAFNoteObjects
-t TKRWMesh
-n RWGltf
-n RWMesh
-n RWObj
-n DFBrowser
-n DFBrowserPane
-n DFBrowserPaneXDE
-n ShapeView
-n TInspector
-n TInspectorAPI
-x TInspectorEXE
-t TKDFBrowser
-t TKShapeView
-t TKTInspector
-t TKTInspectorAPI
-t TKToolsDraw
-t TKTreeModel
-t TKView
-t TKVInspector
-n ToolsDraw
-n TreeModel
-n View
-n ViewControl
-n VInspector
--- a/adm/cmake/3rdparty_macro.cmake
+++ b/adm/cmake/3rdparty_macro.cmake
@@ -133,7 +133,7 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
        # set 3RDPARTY_${PRODUCT_NAME}_LIBRARY as notfound, otherwise find_library can't assign a new value to 3RDPARTY_${PRODUCT_NAME}_LIBRARY
        set (3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX} "3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX}-NOTFOUND" CACHE FILEPATH "The path to ${PRODUCT_NAME} library \"${LIBRARY_NAME}\"" FORCE)

-        if ((3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}") OR (3RDPARTY_${PRODUCT_NAME}_LIBRARY_DIR_${LIBRARY_NAME} AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_LIBRARY_DIR_${LIBRARY_NAME}}"))
+        if (3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}")
          find_library (3RDPARTY_${PRODUCT_NAME}_LIBRARY_${LIBRARY_NAME_SUFFIX} NAMES ${LIBRARY_NAME}
                                                                                PATHS "${3RDPARTY_${PRODUCT_NAME}_LIBRARY_DIR_${LIBRARY_NAME}}" "${3RDPARTY_${PRODUCT_NAME}_DIR}"
                                                                                PATH_SUFFIXES ${${PRODUCT_NAME}_PATH_SUFFIXES}
@@ -181,9 +181,9 @@ macro (THIRDPARTY_PRODUCT PRODUCT_NAME HEADER_NAME LIBRARY_CSF_NAME LIBRARY_NAME
          # set 3RDPARTY_${PRODUCT_NAME}_DLL as notfound, otherwise find_library can't assign a new value to 3RDPARTY_${PRODUCT_NAME}_DLL
          set (3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX} "3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX}-NOTFOUND" CACHE FILEPATH "The path to ${PRODUCT_NAME} shared library \"${LIBRARY_NAME}\"" FORCE)

-          if ((3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}") OR (3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME} AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME}}"))
+          if (3RDPARTY_${PRODUCT_NAME}_DIR AND EXISTS "${3RDPARTY_${PRODUCT_NAME}_DIR}")
            find_library (3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX}  NAMES ${LIBRARY_NAME}
-                                                                               PATHS "${3RDPARTY_${PRODUCT_NAME}_DLL_DIR_${LIBRARY_NAME}}" "${3RDPARTY_${PRODUCT_NAME}_DIR}"
+                                                                               PATHS "${3RDPARTY_${PRODUCT_NAME}_DIR}"
                                                                               PATH_SUFFIXES bin  win${COMPILER_BITNESS}/${COMPILER}/bin
                                                                               NO_DEFAULT_PATH)
            if (3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX} STREQUAL "3RDPARTY_${PRODUCT_NAME}_DLL_${LIBRARY_NAME_SUFFIX}-NOTFOUND")
--- a/adm/cmake/bison.cmake
+++ b/adm/cmake/bison.cmake
@@ -2,28 +2,19 @@

 # execute FindBISON script by "find_package (Bison)" is required to define BISON_TARGET macro

-# delete obsolete 3RDPARTY_BISON_EXECUTABLE cache variable (not used anymore)
-unset (3RDPARTY_BISON_EXECUTABLE CACHE)
-
-# delete BISON_EXECUTABLE cache variable if it is empty, otherwise find_package will fail
-# without reasonable diagnostic
-if (NOT BISON_EXECUTABLE)
-  unset (BISON_EXECUTABLE CACHE)
+if (NOT DEFINED 3RDPARTY_BISON_EXECUTABLE)
+  set (3RDPARTY_BISON_EXECUTABLE "" CACHE FILEPATH "The path to the bison command")
 endif()

-# Add paths to 3rdparty subfolders containing name "bison" to CMAKE_PROGRAM_PATH variable to make
-# these paths searhed by find_package
-if (3RDPARTY_DIR)
-  file (GLOB BISON_PATHS LIST_DIRECTORIES true "${3RDPARTY_DIR}/*bison*/")
-  foreach (candidate_path ${BISON_PATHS})
-    if (IS_DIRECTORY ${candidate_path})
-      list (APPEND CMAKE_PROGRAM_PATH ${candidate_path})
-    endif()
-  endforeach()
-endif()
- 
-find_package (BISON 2.7)
+# BISON_EXECUTABLE is required by BISON_TARGET macro and should be defined
+set (BISON_EXECUTABLE "${3RDPARTY_BISON_EXECUTABLE}" CACHE FILEPATH "path to the bison executable" FORCE)

-if (NOT BISON_FOUND OR NOT BISON_EXECUTABLE OR NOT EXISTS "${BISON_EXECUTABLE}")
-  list (APPEND 3RDPARTY_NOT_INCLUDED BISON_EXECUTABLE)
+find_package (BISON)
+
+if (BISON_FOUND)
+  set (3RDPARTY_BISON_EXECUTABLE "${BISON_EXECUTABLE}" CACHE FILEPATH "The Path to the bison command" FORCE)
+endif()
+
+if (NOT 3RDPARTY_BISON_EXECUTABLE OR NOT EXISTS "${3RDPARTY_BISON_EXECUTABLE}")
+  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_BISON_EXECUTABLE)
 endif()
--- a/adm/cmake/ffmpeg.cmake
+++ b/adm/cmake/ffmpeg.cmake
@@ -37,10 +37,6 @@ foreach (LIBRARY_NAME ${CSF_FFmpeg})
    set (3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME}           "" CACHE PATH "The directory containing FFmpeg framework (${LIBRARY_NAME})")
  endif()

-  if (NOT DEFINED 3RDPARTY_FFMPEG_LIBRARY_DIR)
-    set (3RDPARTY_FFMPEG_LIBRARY_DIR                           "" CACHE PATH "The directory containing FFmpeg libraries")
-  endif()
-
  if (WIN32)
    if (NOT DEFINED 3RDPARTY_FFMPEG_DLL_${LIBRARY_NAME} OR NOT 3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME} OR NOT EXISTS "${3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME}}")
      set (3RDPARTY_FFMPEG_DLL_${LIBRARY_NAME}                 "" CACHE FILEPATH "FFmpeg shared libraries (${LIBRARY_NAME})" FORCE)
@@ -51,9 +47,6 @@ foreach (LIBRARY_NAME ${CSF_FFmpeg})
    if (NOT DEFINED 3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME})
      set (3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME}               "" CACHE PATH "The directory containing FFmpeg shared libraries (${LIBRARY_NAME})")
    endif()
-    if (NOT DEFINED 3RDPARTY_FFMPEG_DLL_DIR)
-      set (3RDPARTY_FFMPEG_DLL_DIR                               "" CACHE PATH "The directory containing FFmpeg shared libraries")
-    endif()
  endif()

  # check 3RDPARTY_${PRODUCT_NAME}_ paths for consistency with specified 3RDPARTY_${PRODUCT_NAME}_DIR
@@ -63,7 +56,6 @@ foreach (LIBRARY_NAME ${CSF_FFmpeg})

    if (3RDPARTY_FFMPEG_LIBRARY_${LIBRARY_NAME} AND EXISTS "${3RDPARTY_FFMPEG_LIBRARY_${LIBRARY_NAME}}")
      get_filename_component (3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME} "${3RDPARTY_FFMPEG_LIBRARY_${LIBRARY_NAME}}" PATH)
-      set (3RDPARTY_FFMPEG_LIBRARY_DIR "${3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME}}" CACHE PATH "The directory containing FFmpeg libraries" FORCE)
      set (3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME} "${3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME}}" CACHE PATH "The directory containing FFmpeg library (${LIBRARY_NAME})" FORCE)
    else()
      CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FFMPEG_DIR 3RDPARTY_FFMPEG_LIBRARY_DIR_${LIBRARY_NAME} PATH "The directory containing FFmpeg library (${LIBRARY_NAME})")
@@ -74,7 +66,6 @@ foreach (LIBRARY_NAME ${CSF_FFmpeg})

      if (3RDPARTY_FFMPEG_DLL_${LIBRARY_NAME} AND EXISTS "${3RDPARTY_FFMPEG_DLL_${LIBRARY_NAME}}")
        get_filename_component (3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME} "${3RDPARTY_FFMPEG_DLL_${LIBRARY_NAME}}" PATH)
-        set (3RDPARTY_FFMPEG_DLL_DIR "${3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME}}" CACHE PATH "The directory containing FFmpeg shared libraries" FORCE)
        set (3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME} "${3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME}}" CACHE PATH "The directory containing FFmpeg shared library (${LIBRARY_NAME})" FORCE)
      else()
        CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FFMPEG_DIR 3RDPARTY_FFMPEG_DLL_DIR_${LIBRARY_NAME} PATH "The directory containing FFmpeg shared library (${LIBRARY_NAME})")
--- a/adm/cmake/flex.cmake
+++ b/adm/cmake/flex.cmake
@@ -2,28 +2,19 @@

 # execute FindFLEX script by "find_package (Flex)" is required to define FLEX_TARGET macro

-# delete obsolete 3RDPARTY_FLEX_EXECUTABLE cache variable (not used anymore)
-unset (3RDPARTY_FLEX_EXECUTABLE CACHE)
-
-# delete FLEX_EXECUTABLE cache variable if it is empty, otherwise find_package will fail
-# without reasonable diagnostic
-if (NOT FLEX_EXECUTABLE)
-  unset (FLEX_EXECUTABLE CACHE)
+if (NOT DEFINED 3RDPARTY_FLEX_EXECUTABLE)
+  set (3RDPARTY_FLEX_EXECUTABLE "" CACHE FILEPATH "The Path to the flex command")
 endif()

-# Add paths to 3rdparty subfolders containing name "flex" to CMAKE_PROGRAM_PATH variable to make
-# these paths searhed by find_package
-if (3RDPARTY_DIR)
-  file (GLOB FLEX_PATHS LIST_DIRECTORIES true "${3RDPARTY_DIR}/*flex*")
-  foreach (candidate_path ${FLEX_PATHS})
-    if (IS_DIRECTORY ${candidate_path})
-      list (APPEND CMAKE_PROGRAM_PATH ${candidate_path})
-    endif()
-  endforeach()
-endif()
- 
-find_package (FLEX 2.5.3)
+# FLEX_EXECUTABLE is required by FLEX_TARGET macro and should be defined
+set (FLEX_EXECUTABLE "${3RDPARTY_FLEX_EXECUTABLE}" CACHE FILEPATH "path to the flex executable" FORCE)

-if (NOT FLEX_FOUND OR NOT FLEX_EXECUTABLE OR NOT EXISTS "${FLEX_EXECUTABLE}")
-  list (APPEND 3RDPARTY_NOT_INCLUDED FLEX_EXECUTABLE)
+find_package (FLEX)
+
+if (FLEX_FOUND)
+  set (3RDPARTY_FLEX_EXECUTABLE "${FLEX_EXECUTABLE}" CACHE FILEPATH "The Path to the flex command" FORCE)
+endif()
+
+if (NOT 3RDPARTY_FLEX_EXECUTABLE OR NOT EXISTS "${3RDPARTY_FLEX_EXECUTABLE}")
+  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_FLEX_EXECUTABLE)
 endif()
--- a/adm/cmake/freetype.cmake
+++ b/adm/cmake/freetype.cmake
@@ -61,8 +61,8 @@ endif()

 # check 3RDPARTY_FREETYPE_ paths for consistency with specified 3RDPARTY_FREETYPE_DIR
 if (3RDPARTY_FREETYPE_DIR AND EXISTS "${3RDPARTY_FREETYPE_DIR}")
-  CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build FILEPATH "The directory containing ft2build.h header")
-  CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 FILEPATH "The directory containing ftheader.h header")
+  CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build FILEPATH "the path to ft2build.h")
+  CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 FILEPATH "the path to ftheader.h")
  if (BUILD_SHARED_LIBS)
    CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR 3RDPARTY_FREETYPE_LIBRARY FILEPATH "the path to freetype library")

@@ -119,8 +119,8 @@ if (IS_BUILTIN_SEARCH_REQUIRED)

  # check the found paths for consistency with specified 3RDPARTY_FREETYPE_DIR
  if (3RDPARTY_FREETYPE_DIR AND EXISTS "${3RDPARTY_FREETYPE_DIR}")
-    CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR FREETYPE_INCLUDE_DIR_ft2build FILEPATH "The directory containing ft2build.h header")
-    CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR FREETYPE_INCLUDE_DIR_freetype2 FILEPATH "The directory containing ftheader.h header")
+    CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR FREETYPE_INCLUDE_DIR_ft2build FILEPATH "the path to ft2build.h")
+    CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR FREETYPE_INCLUDE_DIR_freetype2 FILEPATH "the path to ftheader.h")
    if (BUILD_SHARED_LIBS)
      CHECK_PATH_FOR_CONSISTENCY (3RDPARTY_FREETYPE_DIR FREETYPE_LIBRARY FILEPATH "freetype library")
    endif()
@@ -129,13 +129,13 @@ if (IS_BUILTIN_SEARCH_REQUIRED)
  # assign the found paths to corresponding 3RDPARTY_FREETYPE_ variables
  if (NOT 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build OR NOT EXISTS "${3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build}")
    if (FREETYPE_INCLUDE_DIR_ft2build AND EXISTS "${FREETYPE_INCLUDE_DIR_ft2build}")
-      set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build  "${FREETYPE_INCLUDE_DIR_ft2build}" CACHE FILEPATH "The directory containing ft2build.h header" FORCE)
+      set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build  "${FREETYPE_INCLUDE_DIR_ft2build}" CACHE FILEPATH "the path to ft2build.h" FORCE)
    endif()
  endif()

  if (NOT 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 OR NOT EXISTS "${3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2}")
    if (FREETYPE_INCLUDE_DIR_freetype2 AND EXISTS "${FREETYPE_INCLUDE_DIR_freetype2}")
-      set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2  "${FREETYPE_INCLUDE_DIR_freetype2}" CACHE FILEPATH "The directory containing ftheader.h header" FORCE)
+      set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2  "${FREETYPE_INCLUDE_DIR_freetype2}" CACHE FILEPATH "the path to ftheader.h" FORCE)
    endif()
  endif()

@@ -162,7 +162,7 @@ if (NOT 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build OR NOT EXISTS "${3RDPARTY_FREETYP
  set (FT2BUILD_NAMES ft2build.h config/ft2build.h freetype/config/ft2build.h)

  # set 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build as notfound, otherwise find_library can't assign a new value to 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build
-  set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build "3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build-NOTFOUND" CACHE FILEPATH "The directory containing ft2build.h header" FORCE)
+  set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build "3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build-NOTFOUND" CACHE FILEPATH "the path to ft2build.h" FORCE)

  # cmake (version < 3.0) doesn't find ft2build.h of freetype (version is >= 2.5.1)
  # do search taking into account freetype structure of 2.5.1 version
@@ -185,7 +185,7 @@ if (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build AND EXISTS "${3RDPARTY_FREETYPE_INCLU
 else()
  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build)

-  set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build "" CACHE FILEPATH "The directory containing ft2build.h header" FORCE)
+  set (3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build "" CACHE FILEPATH "the path to ft2build.h" FORCE)
 endif()

 # ftheader.h
@@ -193,7 +193,7 @@ if (NOT 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 OR NOT EXISTS "${3RDPARTY_FREETY
  set (FTHEADER_NAMES ftheader.h config/ftheader.h freetype/config/ftheader.h)

  # set 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 as notfound, otherwise find_library can't assign a new value to 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2
-  set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 "3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2-NOTFOUND" CACHE FILEPATH "The directory containing ftheader.h header" FORCE)
+  set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 "3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2-NOTFOUND" CACHE FILEPATH "the path to ftheader.h" FORCE)

  if (3RDPARTY_FREETYPE_DIR AND EXISTS "${3RDPARTY_FREETYPE_DIR}")
    find_path (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 NAMES ${FTHEADER_NAMES}
@@ -214,7 +214,7 @@ if (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 AND EXISTS "${3RDPARTY_FREETYPE_INCL
 else()
  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2)

-  set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 "" CACHE FILEPATH "The directory containing ftheader.h header" FORCE)
+  set (3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2 "" CACHE FILEPATH "the path to ftheader.h" FORCE)
 endif()

 # freetype library
--- a/adm/cmake/occt_csf.cmake
+++ b/adm/cmake/occt_csf.cmake
@@ -62,10 +62,8 @@ if (WIN32)
  set (CSF_advapi32      "advapi32.lib")
  set (CSF_gdi32         "gdi32.lib")
  set (CSF_user32        "user32.lib")
-  set (CSF_shell32       "shell32.lib")
  set (CSF_wsock32       "wsock32.lib")
-  set (CSF_psapi         "psapi.lib")
-  set (CSF_winmm         "winmm.lib")
+  set (CSF_psapi         "Psapi.lib")
  set (CSF_d3d9          "D3D9.lib")
  if ("${CMAKE_SYSTEM_NAME}" STREQUAL "WindowsStore" OR USE_GLES2)
    set (CSF_OpenGlLibs  "libEGL libGLESv2")
@@ -73,42 +71,34 @@ if (WIN32)
    set (CSF_OpenGlLibs  "opengl32.lib")
  endif()

-else()
+  else()

  if (APPLE)
    set (CSF_objc        "objc")

    # frameworks
-    if (IOS)
-      find_library (Appkit_LIB NAMES UIKit)
-      set (CSF_Appkit ${Appkit_LIB})
-    else()
-      find_library (Appkit_LIB NAMES AppKit)
-      set (CSF_Appkit ${Appkit_LIB})
-    endif()
-    OCCT_CHECK_AND_UNSET (Appkit_LIB)
+    find_library (Appkit_LIB NAMES AppKit)
+    set (CSF_Appkit ${Appkit_LIB})

    find_library (IOKit_LIB NAMES IOKit)
    set (CSF_IOKit ${IOKit_LIB})
+
+    OCCT_CHECK_AND_UNSET (Appkit_LIB)
    OCCT_CHECK_AND_UNSET (IOKit_LIB)

-    if (IOS)
-      find_library (OpenGlLibs_LIB NAMES OpenGLES)
-      set (CSF_OpenGlLibs ${OpenGlLibs_LIB})
-      OCCT_CHECK_AND_UNSET (OpenGlLibs_LIB)
-    elseif (USE_GLX)
+    if (USE_GLX)
      set (CSF_OpenGlLibs GL)
      set (CSF_XwLibs     "X11 Xext Xmu Xi")
    else()
      find_library (OpenGlLibs_LIB NAMES OpenGL)
      set (CSF_OpenGlLibs ${OpenGlLibs_LIB})
+
      OCCT_CHECK_AND_UNSET (OpenGlLibs_LIB)
    endif()
    
  elseif (ANDROID)
    set (CSF_ThreadLibs  "c")
    set (CSF_OpenGlLibs  "EGL GLESv2")
-    set (CSF_androidlog  "log")
  elseif (UNIX)
    set (CSF_ThreadLibs  "pthread rt stdc++")
    if (USE_GLES2)
@@ -118,6 +108,5 @@ else()
    endif()
    set (CSF_XwLibs      "X11 Xext Xmu Xi")
    set (CSF_dl          "dl")
-    set (CSF_fontconfig  "fontconfig")
  endif()
 endif()
--- a/adm/cmake/occt_defs_flags.cmake
+++ b/adm/cmake/occt_defs_flags.cmake
@@ -86,13 +86,8 @@ if (MSVC AND (MSVC_VERSION GREATER 1400))
 endif()

 # generate a single response file which enlist all of the object files
-if (NOT DEFINED CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS)
-  SET(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
-endif()
-if (NOT DEFINED CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS)
-  SET(CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS 1)
-endif()
-
+SET(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
+SET(CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS 1)
 # increase compiler warnings level (-W4 for MSVC, -Wextra for GCC)
 if (MSVC)
  if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
@@ -111,36 +106,37 @@ elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMP
  endif()
 endif()

-if ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
-  if (APPLE)
-    # CLang can be used with both libstdc++ and libc++, however on OS X libstdc++ is outdated.
-    set (CMAKE_CXX_FLAGS "-std=c++0x -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
-  elseif(NOT WIN32)
-    # CLang for Windows (at least CLang 8.0 distributed with VS 2019)
-    # does not support option "-std=c++0x"
-    set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
+if(MINGW)
+  # Set default release optimization option to O2 instead of O3, since in
+  # some OCCT related examples, this gives significantly smaller binaries
+  # at comparable performace with MinGW-w64.
+  string (REGEX MATCH "-O3" IS_O3_CXX "${CMAKE_CXX_FLAGS_RELEASE}")
+  if (IS_O3_CXX)
+    string (REGEX REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
+  else()
+    set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
  endif()
-  # Optimize size of binaries
-  set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-s ${CMAKE_SHARED_LINKER_FLAGS}")
-elseif(MINGW)
+
+  set (CMAKE_CXX_FLAGS "-std=gnu++0x ${CMAKE_CXX_FLAGS}")
  add_definitions(-D_WIN32_WINNT=0x0501)
  # workaround bugs in mingw with vtable export
  set (CMAKE_SHARED_LINKER_FLAGS "-Wl,--export-all-symbols")
-
-  # Require C++11
-  set (CMAKE_CXX_FLAGS "-std=gnu++0x ${CMAKE_CXX_FLAGS}")
-  # Optimize size of binaries
-  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
-  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
+elseif ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
+  if (APPLE)
+    # CLang can be used with both libstdc++ and libc++, however on OS X libstdc++ is outdated.
+    set (CMAKE_CXX_FLAGS "-std=c++0x -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
+  else()
+    set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
+  endif()
 elseif (DEFINED CMAKE_COMPILER_IS_GNUCXX)
-  # Require C++11
  set (CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
-  # Optimize size of binaries
+endif()
+
+# Optimize size of binaries
+if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR MINGW)
  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")
  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
 endif()

-if (BUILD_RELEASE_DISABLE_EXCEPTIONS)
-  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception")
-  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception")
-endif()
+set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception")
+set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception")
--- a/adm/cmake/occt_macros.cmake
+++ b/adm/cmake/occt_macros.cmake
@@ -12,12 +12,18 @@ macro (OCCT_CHECK_AND_UNSET VARNAME)
  endif()
 endmacro()

-macro (OCCT_CHECK_AND_UNSET_GROUP GROUPNAME)
-  get_cmake_property(VARS VARIABLES)
-  string (REGEX MATCHALL "(^|;)${GROUPNAME}[A-Za-z0-9_]*" GROUPNAME_VARS "${VARS}")
-  foreach(GROUPNAME_VAR ${GROUPNAME_VARS})
-    OCCT_CHECK_AND_UNSET(${GROUPNAME_VAR})
-  endforeach()
+macro (OCCT_CHECK_AND_UNSET_GROUP VARNAME)
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_DIR")
+
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_INCLUDE_DIR")
+
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_LIBRARY")
+  OCCT_CHECK_AND_UNSET ("${VARNAME}_LIBRARY_DIR")
+
+  if (WIN32)
+    OCCT_CHECK_AND_UNSET ("${VARNAME}_DLL")
+    OCCT_CHECK_AND_UNSET ("${VARNAME}_DLL_DIR")
+  endif()
 endmacro()

 macro (OCCT_CHECK_AND_UNSET_INSTALL_DIR_SUBDIRS)
@@ -157,18 +163,13 @@ function (FIND_PRODUCT_DIR ROOT_DIR PRODUCT_NAME RESULT)
  OCCT_MAKE_COMPILER_BITNESS()

  string (TOLOWER "${PRODUCT_NAME}" lower_PRODUCT_NAME)
-  if ("${lower_PRODUCT_NAME}" STREQUAL "egl")
-    string (SUBSTRING "${lower_PRODUCT_NAME}" 1 -1 lower_PRODUCT_NAME)
-    list (APPEND SEARCH_TEMPLATES "[^gl]+${lower_PRODUCT_NAME}.*")
-  else()
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*${COMPILER}.*${COMPILER_BITNESS}")
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+.*${COMPILER}.*${COMPILER_BITNESS}")
-    list (APPEND SEARCH_TEMPLATES "^[a-zA-Z]*[0-9]*-${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+.*${COMPILER}.*${COMPILER_BITNESS}")
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+.*${COMPILER_BITNESS}")
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*.*${COMPILER_BITNESS}")
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+")
-    list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*")
-  endif()
+
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*${COMPILER}.*${COMPILER_BITNESS}")
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+.*${COMPILER}.*${COMPILER_BITNESS}")
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+.*${COMPILER_BITNESS}")
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*.*${COMPILER_BITNESS}")
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*[0-9.]+")
+  list (APPEND SEARCH_TEMPLATES "^[^a-zA-Z]*${lower_PRODUCT_NAME}[^a-zA-Z]*")

  SUBDIRECTORY_NAMES ("${ROOT_DIR}" SUBDIR_NAME_LIST)

@@ -268,7 +269,7 @@ macro (COLLECT_AND_INSTALL_OCCT_HEADER_FILES ROOT_TARGET_OCCT_DIR OCCT_BUILD_TOO
    list (LENGTH OCCT_ALL_FILE_NAMES ALL_FILES_NB)
    math (EXPR ALL_FILES_NB "${ALL_FILES_NB} - 1" )

-    # emit warnings if there are unprocessed headers
+    # emit warnings if there is unprocessed headers
    file (GLOB OCCT_ALL_FILES_IN_DIR "${OCCT_COLLECT_SOURCE_DIR}/${OCCT_PACKAGE}/*.*")
    file (GLOB OCCT_ALL_FILES_IN_PATCH_DIR "${BUILD_PATCH}/src/${OCCT_PACKAGE}/*.*")

@@ -301,8 +302,8 @@ macro (COLLECT_AND_INSTALL_OCCT_HEADER_FILES ROOT_TARGET_OCCT_DIR OCCT_BUILD_TOO
            list (APPEND OCCT_HEADER_FILES_COMPLETE ${OCCT_FILE_IN_DIR})

            # collect header files with name that does not contain its package one
-            string (REGEX MATCH "^${OCCT_PACKAGE}[_.]" IS_HEADER_MATHCING_PACKAGE "${OCCT_FILE_NAME}")
-            if (NOT IS_HEADER_MATHCING_PACKAGE)
+            string (FIND "${OCCT_FILE_NAME}" "${OCCT_PACKAGE}_" FOUND_INDEX)
+            if (NOT ${FOUND_INDEX} EQUAL 0)
              list (APPEND OCCT_HEADER_FILE_WITH_PROPER_NAMES "${OCCT_FILE_NAME}")
            endif()
          endif()
@@ -349,12 +350,12 @@ macro (COLLECT_AND_INSTALL_OCCT_HEADER_FILES ROOT_TARGET_OCCT_DIR OCCT_BUILD_TOO
    list (FIND OCCT_USED_PACKAGES ${PACKAGE_NAME} IS_HEADER_FOUND)
    if (NOT ${IS_HEADER_FOUND} EQUAL -1)
      if (NOT EXISTS "${OCCT_COLLECT_SOURCE_DIR}/${PACKAGE_NAME}/${HEADER_FILE_NAME}")
-        message (STATUS "Warning. ${OCCT_HEADER_FILE_OLD} is not present in the sources and will be removed from ${ROOT_TARGET_OCCT_DIR}/inc")
+        message (STATUS "Warning. ${OCCT_HEADER_FILE_OLD} is not presented in the sources and will be removed from ${ROOT_TARGET_OCCT_DIR}/inc")
        file (REMOVE "${OCCT_HEADER_FILE_OLD}")
      else()
        list (FIND OCCT_HEADER_FILE_NAMES_NOT_IN_FILES ${PACKAGE_NAME} IS_HEADER_FOUND)
        if (NOT ${IS_HEADER_FOUND} EQUAL -1)
-          message (STATUS "Warning. ${OCCT_HEADER_FILE_OLD} is present in the sources but not involved in FILES and will be removed from ${ROOT_TARGET_OCCT_DIR}/inc")
+          message (STATUS "Warning. ${OCCT_HEADER_FILE_OLD} is presented in the sources but not involved in FILES and will be removed from ${ROOT_TARGET_OCCT_DIR}/inc")
          file (REMOVE "${OCCT_HEADER_FILE_OLD}")
        endif()
      endif()
--- a/adm/cmake/occt_toolkit.cmake
+++ b/adm/cmake/occt_toolkit.cmake
@@ -57,110 +57,117 @@ foreach (OCCT_PACKAGE ${USED_PACKAGES})
    set (OCCT_PACKAGE_NAME "${OCCT_PACKAGE}")
  endif()

-  if (WIN32)
-    list (APPEND PRECOMPILED_DEFS "-D__${OCCT_PACKAGE_NAME}_DLL")
-  endif()
-
-  set (SOURCE_FILES)
-  set (HEADER_FILES)
-
-  # Generate Flex and Bison files
-  if (${BUILD_YACCLEX})
-    # flex files
-    OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]lex" SOURCE_FILES_FLEX)
-    list (LENGTH SOURCE_FILES_FLEX SOURCE_FILES_FLEX_LEN)
-
-    # bison files
-    OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]yacc" SOURCE_FILES_BISON)
-    list (LENGTH SOURCE_FILES_BISON SOURCE_FILES_BISON_LEN)
-
-    if (${SOURCE_FILES_FLEX_LEN} EQUAL ${SOURCE_FILES_BISON_LEN} AND NOT ${SOURCE_FILES_FLEX_LEN} EQUAL 0)
-      
-      list (SORT SOURCE_FILES_FLEX)
-      list (SORT SOURCE_FILES_BISON)
-
-      math (EXPR SOURCE_FILES_FLEX_LEN "${SOURCE_FILES_FLEX_LEN} - 1")
-      foreach (FLEX_FILE_INDEX RANGE ${SOURCE_FILES_FLEX_LEN})
-
-        list (GET SOURCE_FILES_FLEX ${FLEX_FILE_INDEX} CURRENT_FLEX_FILE)
-        get_filename_component (CURRENT_FLEX_FILE_NAME ${CURRENT_FLEX_FILE} NAME_WE)
-
-        list (GET SOURCE_FILES_BISON ${FLEX_FILE_INDEX} CURRENT_BISON_FILE)
-        get_filename_component (CURRENT_BISON_FILE_NAME ${CURRENT_BISON_FILE} NAME_WE)
-          
-        string (COMPARE EQUAL ${CURRENT_FLEX_FILE_NAME} ${CURRENT_BISON_FILE_NAME} ARE_FILES_EQUAL)
-
-        if (EXISTS "${CURRENT_FLEX_FILE}" AND EXISTS "${CURRENT_BISON_FILE}" AND ${ARE_FILES_EQUAL})
-          set (BISON_OUTPUT_FILE ${CURRENT_BISON_FILE_NAME}.tab.c)
-          set (FLEX_OUTPUT_FILE lex.${CURRENT_FLEX_FILE_NAME}.c)
-          BISON_TARGET (Parser_${CURRENT_BISON_FILE_NAME} ${CURRENT_BISON_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${BISON_OUTPUT_FILE} COMPILE_FLAGS "-p ${CURRENT_BISON_FILE_NAME} -l")
-          FLEX_TARGET  (Scanner_${CURRENT_FLEX_FILE_NAME} ${CURRENT_FLEX_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${FLEX_OUTPUT_FILE} COMPILE_FLAGS "-P${CURRENT_FLEX_FILE_NAME} -L")
-          ADD_FLEX_BISON_DEPENDENCY (Scanner_${CURRENT_FLEX_FILE_NAME} Parser_${CURRENT_BISON_FILE_NAME})
-           
-          list (APPEND SOURCE_FILES ${BISON_OUTPUT_FILE} ${FLEX_OUTPUT_FILE})
-        endif()
-      endforeach()
-    endif()
-  endif()
-
-  # header files
-  if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_M   REGEX ".+[.]h")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_LXX REGEX ".+[.]lxx")
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_GXX REGEX ".+[.]gxx")
-
-    file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_C REGEX ".+[.]c")
-    if(APPLE)
-      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_M REGEX ".+[.]mm")
-    endif()
+  # TKService contains platform-dependent packages: Xw and WNT
+  if ((WIN32 AND "${OCCT_PACKAGE}" STREQUAL "Xw") OR (NOT WIN32 AND "${OCCT_PACKAGE}" STREQUAL "WNT"))
+    # do nothing
  else()
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_M   REGEX ".+[.]h")
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_LXX REGEX ".+[.]lxx")
-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_GXX REGEX ".+[.]gxx")

-    file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     SOURCE_FILES_C REGEX ".+[.]c")
-    if(APPLE)
-      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"   SOURCE_FILES_M REGEX ".+[.]mm")
+    if (WIN32)
+      list (APPEND PRECOMPILED_DEFS "-D__${OCCT_PACKAGE_NAME}_DLL")
+    endif()
+
+    set (SOURCE_FILES)
+    set (HEADER_FILES)
+
+    # Generate Flex and Bison files
+    if (${BUILD_YACCLEX})
+
+      # flex files
+      OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]lex" SOURCE_FILES_FLEX)
+      list (LENGTH SOURCE_FILES_FLEX SOURCE_FILES_FLEX_LEN)
+
+      # bison files
+      OCCT_ORIGIN_AND_PATCHED_FILES ("${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}" "*[.]yacc" SOURCE_FILES_BISON)
+      list (LENGTH SOURCE_FILES_BISON SOURCE_FILES_BISON_LEN)
+
+      if (${SOURCE_FILES_FLEX_LEN} EQUAL ${SOURCE_FILES_BISON_LEN} AND NOT ${SOURCE_FILES_FLEX_LEN} EQUAL 0)
+      
+        list (SORT SOURCE_FILES_FLEX)
+        list (SORT SOURCE_FILES_BISON)
+
+        math (EXPR SOURCE_FILES_FLEX_LEN "${SOURCE_FILES_FLEX_LEN} - 1")
+        foreach (FLEX_FILE_INDEX RANGE ${SOURCE_FILES_FLEX_LEN})
+
+          list (GET SOURCE_FILES_FLEX ${FLEX_FILE_INDEX} CURRENT_FLEX_FILE)
+          get_filename_component (CURRENT_FLEX_FILE_NAME ${CURRENT_FLEX_FILE} NAME_WE)
+
+          list (GET SOURCE_FILES_BISON ${FLEX_FILE_INDEX} CURRENT_BISON_FILE)
+          get_filename_component (CURRENT_BISON_FILE_NAME ${CURRENT_BISON_FILE} NAME_WE)
+          
+          string (COMPARE EQUAL ${CURRENT_FLEX_FILE_NAME} ${CURRENT_BISON_FILE_NAME} ARE_FILES_EQUAL)
+
+          if (EXISTS "${CURRENT_FLEX_FILE}" AND EXISTS "${CURRENT_BISON_FILE}" AND ${ARE_FILES_EQUAL})
+            set (BISON_OUTPUT_FILE ${CURRENT_BISON_FILE_NAME}.tab.c)
+            set (FLEX_OUTPUT_FILE lex.${CURRENT_FLEX_FILE_NAME}.c)
+            BISON_TARGET (Parser_${CURRENT_BISON_FILE_NAME} ${CURRENT_BISON_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${BISON_OUTPUT_FILE} COMPILE_FLAGS "-p ${CURRENT_BISON_FILE_NAME}")
+            FLEX_TARGET  (Scanner_${CURRENT_FLEX_FILE_NAME} ${CURRENT_FLEX_FILE} ${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${FLEX_OUTPUT_FILE} COMPILE_FLAGS "-P${CURRENT_FLEX_FILE_NAME}")
+            ADD_FLEX_BISON_DEPENDENCY (Scanner_${CURRENT_FLEX_FILE_NAME} Parser_${CURRENT_BISON_FILE_NAME})
+           
+            list (APPEND SOURCE_FILES ${BISON_OUTPUT_FILE} ${FLEX_OUTPUT_FILE})
+          endif()
+        endforeach()
+      endif()
+    endif()
+
+    # header files
+    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_M   REGEX ".+[.]h")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_LXX REGEX ".+[.]lxx")
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" HEADER_FILES_GXX REGEX ".+[.]gxx")
+
+      file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_C REGEX ".+[.]c")
+      if(APPLE)
+        file (STRINGS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES" SOURCE_FILES_M REGEX ".+[.]mm")
+      endif()
+    else()
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_M   REGEX ".+[.]h")
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_LXX REGEX ".+[.]lxx")
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     HEADER_FILES_GXX REGEX ".+[.]gxx")
+
+      file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"     SOURCE_FILES_C REGEX ".+[.]c")
+      if(APPLE)
+        file (STRINGS "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/FILES"   SOURCE_FILES_M REGEX ".+[.]mm")
+      endif()
    endif()
-  endif()
    
-  list (APPEND HEADER_FILES ${HEADER_FILES_M} ${HEADER_FILES_LXX} ${SOURCE_FILES_GXX})
-  list (APPEND SOURCE_FILES ${SOURCE_FILES_C})
-  if(APPLE)
-    list (APPEND SOURCE_FILES ${SOURCE_FILES_M})
+    list (APPEND HEADER_FILES ${HEADER_FILES_M} ${HEADER_FILES_LXX} ${SOURCE_FILES_GXX})
+    list (APPEND SOURCE_FILES ${SOURCE_FILES_C})
+    if(APPLE)
+      list (APPEND SOURCE_FILES ${SOURCE_FILES_M})
+    endif()
+
+    foreach(HEADER_FILE ${HEADER_FILES})
+      if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        list (APPEND USED_INCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+      else()
+        list (APPEND USED_INCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+        SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
+      endif()
+    endforeach()
+
+    foreach(SOURCE_FILE ${SOURCE_FILES})
+      if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        list (APPEND USED_SRCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+      else()
+        list (APPEND USED_SRCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+        SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
+      endif()
+    endforeach()
+
+    if (USE_QT)
+      FIND_AND_INSTALL_QT_RESOURCES (${OCCT_PACKAGE} RESOURCE_FILES)
+      #message("Qt Resource files are: ${QT_RESOURCE_FILES} in ${OCCT_PACKAGE}")
+    endif(USE_QT)
+
+    #message("Resource files are: ${RESOURCE_FILES} in ${OCCT_PACKAGE}")
+    foreach(RESOURCE_FILE ${RESOURCE_FILES})
+      SOURCE_GROUP ("Resource Files\\${OCCT_PACKAGE_NAME}" FILES "${RESOURCE_FILE}")
+    endforeach()
  endif()
-
-  foreach(HEADER_FILE ${HEADER_FILES})
-    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      list (APPEND USED_INCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-    else()
-      list (APPEND USED_INCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-      SOURCE_GROUP ("Header Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${HEADER_FILE}")
-    endif()
-  endforeach()
-
-  foreach(SOURCE_FILE ${SOURCE_FILES})
-    if (BUILD_PATCH AND EXISTS "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      message (STATUS "Info: consider patched file: ${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      list (APPEND USED_SRCFILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${BUILD_PATCH}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-    else()
-      list (APPEND USED_SRCFILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-      SOURCE_GROUP ("Source Files\\${OCCT_PACKAGE_NAME}" FILES "${CMAKE_SOURCE_DIR}/${RELATIVE_SOURCES_DIR}/${OCCT_PACKAGE}/${SOURCE_FILE}")
-    endif()
-  endforeach()
-
-  if (USE_QT)
-    FIND_AND_INSTALL_QT_RESOURCES (${OCCT_PACKAGE} RESOURCE_FILES)
-    #message("Qt Resource files are: ${QT_RESOURCE_FILES} in ${OCCT_PACKAGE}")
-  endif(USE_QT)
-
-  #message("Resource files are: ${RESOURCE_FILES} in ${OCCT_PACKAGE}")
-  foreach(RESOURCE_FILE ${RESOURCE_FILES})
-    SOURCE_GROUP ("Resource Files\\${OCCT_PACKAGE_NAME}" FILES "${RESOURCE_FILE}")
-  endforeach()
 endforeach()
 string (REGEX REPLACE ";" " " PRECOMPILED_DEFS "${PRECOMPILED_DEFS}")

@@ -323,7 +330,7 @@ endif()

 # Update list of used VTK libraries if OpenGL2 Rendering BackEnd is used.
 # Add VTK_OPENGL2_BACKEND definition.
-if("${VTK_RENDERING_BACKEND}" STREQUAL "OpenGL2" OR IS_VTK_9XX)
+if("${VTK_RENDERING_BACKEND}" STREQUAL "OpenGL2")
  add_definitions(-DVTK_OPENGL2_BACKEND)
  foreach (VTK_EXCLUDE_LIBRARY vtkRenderingOpenGL vtkRenderingFreeTypeOpenGL)
    list (FIND USED_TOOLKITS_BY_CURRENT_PROJECT "${VTK_EXCLUDE_LIBRARY}" IS_VTK_OPENGL_FOUND)
@@ -347,9 +354,6 @@ else()
 endif()

 if (BUILD_SHARED_LIBS)
-  if(IS_VTK_9XX)
-    string (REGEX REPLACE "vtk" "VTK::" USED_TOOLKITS_BY_CURRENT_PROJECT "${USED_TOOLKITS_BY_CURRENT_PROJECT}")
-  endif()
  target_link_libraries (${PROJECT_NAME} ${USED_TOOLKITS_BY_CURRENT_PROJECT} ${USED_EXTERNAL_LIBS_BY_CURRENT_PROJECT})
 endif()

--- a/adm/cmake/qt.cmake
+++ b/adm/cmake/qt.cmake
@@ -1,22 +1,23 @@
 #qt

-# Qt is searched manually first (just determine root)
-message (STATUS "Processing Qt 3-rd party")
+#looking for 3RDPARTY_QT_DIR variable used later in qt_macro.cmake
+SET(CSF_QtCore "QtCore")
+THIRDPARTY_PRODUCT("QT" "" "CSF_QtCore" "d")

-if (NOT DEFINED ${3RDPARTY_QT_DIR} AND ${3RDPARTY_QT_DIR} STREQUAL "")
-  FIND_PRODUCT_DIR ("${3RDPARTY_DIR}" Qt 3RDPARTY_QT_DIR_NAME)
+list (APPEND 3RDPARTY_DLL_DIRS "${3RDPARTY_QT_DIR}/bin")

-  if (NOT DEFINED ${3RDPARTY_QT_DIR_NAME} AND ${3RDPARTY_QT_DIR_NAME} STREQUAL "")
-    set (3RDPARTY_QT_DIR "" CACHE PATH "The directory containing qt")
-    message (FATAL_ERROR "Could not find used third-party product: 3RDPARTY_QT_DIR")
-  endif()
+list (REMOVE_ITEM 3RDPARTY_NOT_INCLUDED "3RDPARTY_QT_INCLUDE_DIR")
+list (REMOVE_ITEM 3RDPARTY_NO_LIBS "3RDPARTY_QT_LIBRARY_DIR")
+list (REMOVE_ITEM 3RDPARTY_NO_DLLS "3RDPARTY_QT_DLL_DIR")

-  # Combine directory name with absolute path and show in GUI
-  set (3RDPARTY_QT_DIR "${3RDPARTY_DIR}/${3RDPARTY_QT_DIR_NAME}" CACHE PATH "The directory containing Qt" FORCE)
-  message (STATUS "Info: Qt is used from folder: ${3RDPARTY_QT_DIR}")
-endif()
+UNSET (${3RDPARTY_QT_DLL} CACHE)
+UNSET (${3RDPARTY_QT_DLL_DIR} CACHE)
+UNSET (${3RDPARTY_QT_INCLUDE_DIR} CACHE)
+UNSET (${3RDPARTY_QT_LIBRARY} CACHE)
+UNSET (${3RDPARTY_QT_LIBRARY_DIR} CACHE)

 set (USED_3RDPARTY_QT_DIR "${3RDPARTY_QT_DIR}")
+message (STATUS "Info: Qt is used from folder: ${3RDPARTY_QT_DIR}")

 # Now set CMAKE_PREFIX_PATH to point to local Qt installation.
 # Without this setting find_package() will not work
@@ -33,9 +34,3 @@ if (NOT ${Qt5_FOUND})
 else()
  #message (STATUS "Qt5 cmake configuration")
 endif()
-
-if (3RDPARTY_QT_DIR OR EXISTS "${3RDPARTY_QT_DIR}")
-  list (APPEND 3RDPARTY_DLL_DIRS "${3RDPARTY_QT_DIR}/bin")
-else()
-  list (APPEND 3RDPARTY_NO_DLLS 3RDPARTY_QT_DLL_DIR)
-endif()
--- a/adm/cmake/rapidjson.cmake
+++ b/adm/cmake/rapidjson.cmake
@@ -1,86 +0,0 @@
-# RapidJSON
-
-if (NOT DEFINED INSTALL_RAPIDJSON)
-  set (INSTALL_RAPIDJSON OFF CACHE BOOL "${INSTALL_RAPIDJSON_DESCR}")
-endif()
-
-# RapidJSON directory
-if (NOT DEFINED 3RDPARTY_RAPIDJSON_DIR)
-  set (3RDPARTY_RAPIDJSON_DIR "" CACHE PATH "The directory containing RapidJSON")
-endif()
-
-# search for RapidJSON in user defined directory
-if (3RDPARTY_DIR AND EXISTS "${3RDPARTY_DIR}")
-  if (NOT 3RDPARTY_RAPIDJSON_DIR OR NOT EXISTS "${3RDPARTY_RAPIDJSON_DIR}")
-    FIND_PRODUCT_DIR("${3RDPARTY_DIR}" RapidJSON RAPIDJSON_DIR_NAME)
-    if (RAPIDJSON_DIR_NAME)
-      set (3RDPARTY_RAPIDJSON_DIR "${3RDPARTY_DIR}/${RAPIDJSON_DIR_NAME}" CACHE PATH "The directory containing RapidJSON" FORCE)
-    endif()
-  endif()
-endif()
-
-if (NOT DEFINED 3RDPARTY_RAPIDJSON_INCLUDE_DIR)
-  set (3RDPARTY_RAPIDJSON_INCLUDE_DIR  "" CACHE FILEPATH "The directory containing headers of the RAPIDJSON")
-endif()
-
-if (NOT 3RDPARTY_RAPIDJSON_INCLUDE_DIR OR NOT EXISTS "${3RDPARTY_RAPIDJSON_INCLUDE_DIR}")
-
-  set (HEADER_NAMES rapidjson/rapidjson.h)
-
-  set (3RDPARTY_RAPIDJSON_INCLUDE_DIR "3RDPARTY_RAPIDJSON_INCLUDE_DIR-NOTFOUND" CACHE PATH "the path to RapidJSON header file" FORCE)
-
-  if (3RDPARTY_RAPIDJSON_DIR AND EXISTS "${3RDPARTY_RAPIDJSON_DIR}")
-    find_path (3RDPARTY_RAPIDJSON_INCLUDE_DIR NAMES ${HEADER_NAMES}
-                                              PATHS ${3RDPARTY_RAPIDJSON_DIR}
-                                              PATH_SUFFIXES include rapidjson
-                                              CMAKE_FIND_ROOT_PATH_BOTH
-                                              NO_DEFAULT_PATH)
-  else()
-    find_path (3RDPARTY_RAPIDJSON_INCLUDE_DIR NAMES ${HEADER_NAMES}
-                                              PATH_SUFFIXES include rapidjson
-                                              CMAKE_FIND_ROOT_PATH_BOTH)
-  endif()
-
-  # use default (CMake) RapidJSON search
-  if (NOT 3RDPARTY_RAPIDJSON_INCLUDE_DIR OR NOT EXISTS "${3RDPARTY_RAPIDJSON_INCLUDE_DIR}")
-    if (3RDPARTY_RAPIDJSON_DIR AND EXISTS "${3RDPARTY_RAPIDJSON_DIR}")
-      set (CACHED_RAPIDJSON_DIR $ENV{RapidJSON_DIR})
-      set (ENV{RapidJSON_DIR} "${3RDPARTY_RAPIDJSON_DIR}")
-    endif()
-
-    find_package(RapidJSON QUIET)
-
-    # restore ENV{RapidJSON_DIR}
-    if (3RDPARTY_RAPIDJSON_DIR AND EXISTS "${3RDPARTY_RAPIDJSON_DIR}")
-      set (ENV{RapidJSON_DIR} ${CACHED_RAPIDJSON_DIR})
-    endif()
-
-    if (${RAPIDJSON_FOUND})
-      set (3RDPARTY_RAPIDJSON_INCLUDE_DIR "${RAPIDJSON_INCLUDE_DIR}" CACHE PATH "the path to RapidJSON header file" FORCE)
-      set (3RDPARTY_RAPIDJSON_DIR         "${RAPIDJSON_ROOT_DIR}"    CACHE PATH "The directory containing RapidJSON" FORCE)
-    endif()
-  endif()
-endif()
-
-if (3RDPARTY_RAPIDJSON_INCLUDE_DIR AND EXISTS "${3RDPARTY_RAPIDJSON_INCLUDE_DIR}")
-  list (APPEND 3RDPARTY_INCLUDE_DIRS "${3RDPARTY_RAPIDJSON_INCLUDE_DIR}")
-
-  # Install header files
-  if (INSTALL_RAPIDJSON)
-    file(GLOB RAPIDJSON_SUBDIRS "${3RDPARTY_RAPIDJSON_INCLUDE_DIR}/*")
-    foreach(SUBDIR ${RAPIDJSON_SUBDIRS})
-      if(IS_DIRECTORY "${SUBDIR}")
-        install (DIRECTORY "${SUBDIR}" DESTINATION "${INSTALL_DIR_INCLUDE}")
-      else()
-        install (FILES "${SUBDIR}" DESTINATION "${INSTALL_DIR_INCLUDE}")
-      endif()
-    endforeach()
-  endif()
-else()
-  list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_RAPIDJSON_INCLUDE_DIR)
-
-  set (3RDPARTY_RAPIDJSON_INCLUDE_DIR "" CACHE PATH "the path to RapidJSON header file" FORCE)
-endif()
-
-# unset all redundant variables
-OCCT_CHECK_AND_UNSET(RapidJSON_DIR)
--- a/adm/cmake/vardescr.cmake
+++ b/adm/cmake/vardescr.cmake
@@ -28,11 +28,6 @@ Applies only for Debug configuration.")
 set (BUILD_SHARED_LIBRARY_NAME_POSTFIX_DESCR
 "Append the postfix to names of output libraries")

-set (BUILD_RELEASE_DISABLE_EXCEPTIONS_DESCR
-"Disables exceptions like Standard_OutOfRange in Release builds.
-Defines No_Exception macros for Release builds when enabled (default).
-These exceptions are always enabled in Debug builds, but disable in Release for better performance")
-
 set (BUILD_ENABLE_FPE_SIGNAL_HANDLER_DESCR
 "Enable/Disable the floating point exceptions (FPE) during DRAW execution only.
 Corresponding environment variable (CSF_FPE) can be changed manually
@@ -94,7 +89,6 @@ INSTALL_MESSAGE (INSTALL_EGL              "EGL binaries")
 INSTALL_MESSAGE (INSTALL_GLES2            "OpenGL ES 2.0 binaries")
 INSTALL_MESSAGE (INSTALL_FREETYPE         "FreeType binaries")
 INSTALL_MESSAGE (INSTALL_TBB              "TBB binaries")
-INSTALL_MESSAGE (INSTALL_RAPIDJSON        "RapidJSON header files")
 INSTALL_MESSAGE (INSTALL_TCL              "TCL binaries")
 INSTALL_MESSAGE (INSTALL_TK               "TK binaries")
 INSTALL_MESSAGE (INSTALL_VTK              "VTK binaries ")
@@ -162,10 +156,6 @@ set (USE_FREEIMAGE_DESCR
 "Indicates whether Freeimage product should be used in OCCT visualization
 module for support of popular graphics image formats (PNG, BMP etc)")

-set (USE_RAPIDJSON_DESCR
-"Indicates whether RapidJSON product should be used in OCCT DataExchange
-module for support of JSON-based formats like glTF")
-
 set (USE_EGL_DESCR
 "Indicates whether EGL should be used in OCCT visualization
 module instead of conventional OpenGL context creation APIs")
--- a/adm/cmake/vtk.cmake
+++ b/adm/cmake/vtk.cmake
@@ -66,15 +66,10 @@ if (3RDPARTY_VTK_DIR AND EXISTS "${3RDPARTY_VTK_DIR}")
  set (ENV{VTK_DIR} ${CACHED_VTK_DIR})
 endif()

-unset (IS_VTK_9XX)
 if (VTK_FOUND)
-  message ("VTK version (${VTK_VERSION})")
-  if(VTK_MAJOR_VERSION EQUAL 8 AND VTK_MINOR_VERSION GREATER 9 OR VTK_MAJOR_VERSION GREATER 8)
-    set (IS_VTK_9XX 1)
-  else()
-    # add compiler flags, preprocessor definitions, include and link dirs
-    include (${VTK_USE_FILE})
-  endif()
+
+  # add compiler flags, preprocessor definitions, include and link dirs
+  include (${VTK_USE_FILE})

  if (VTK_LIBRARIES)

@@ -86,83 +81,79 @@ if (VTK_FOUND)
 #    endif()

    foreach (VTK_LIBRARY ${VTK_LIBRARIES})
-      if (IS_VTK_9XX)
-        string (REGEX MATCH "^VTK::" IS_VTK_LIBRARY ${VTK_LIBRARY})
-      else()
-        string (REGEX MATCH "^vtk" IS_VTK_LIBRARY ${VTK_LIBRARY})
-      endif()
-      if (NOT IS_VTK_LIBRARY OR NOT TARGET ${VTK_LIBRARY})
-        continue()
-      endif()
-
-      # get paths from corresponding variables
-      if (${VTK_LIBRARY}_INCLUDE_DIRS AND EXISTS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
-        list (APPEND 3RDPARTY_VTK_INCLUDE_DIRS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
-      endif()
-
-      if (${VTK_LIBRARY}_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
-        list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
-      endif()
-
-      if (${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
-        list (APPEND 3RDPARTY_VTK_DLL_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
-        if (NOT WIN32)
-          list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+      string (REGEX MATCH "^vtk" IS_VTK_LIBRARY ${VTK_LIBRARY})
+      if (IS_VTK_LIBRARY AND TARGET ${VTK_LIBRARY})
+        # get paths from corresponding variables
+        if (${VTK_LIBRARY}_INCLUDE_DIRS AND EXISTS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
+          list (APPEND 3RDPARTY_VTK_INCLUDE_DIRS "${${VTK_LIBRARY}_INCLUDE_DIRS}")
        endif()
-      endif()

-      # get paths from corresponding properties
-      get_target_property (TARGET_VTK_IMPORT_CONFS ${VTK_LIBRARY} IMPORTED_CONFIGURATIONS)
-      if (TARGET_VTK_IMPORT_CONFS)
-        list (GET TARGET_VTK_IMPORT_CONFS 0 CHOSEN_IMPORT_CONF)
-
-        # todo: choose configuration in connection with the build type
-        #if (CMAKE_BUILD_TYPE)
-        #  foreach (IMPORT_CONF ${TARGET_VTK_IMPORT_CONFS})
-        #  endforeach()
-        #endif()
-
-        # Work-around against link failure in case if VTK contains dependency
-        # on DirectX: its run-time is always present on Windows, but SDK can
-        # be absent on current workstation, while not actually needed for
-        # OCCT linking.
-        # VTK 6.1 for VC 10
-        get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
-          string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
-          if (HARDCODED_D3D9_LIB)
-            message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
-
-            list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
-            set_target_properties (${VTK_LIBRARY} PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF} "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+          if (${VTK_LIBRARY}_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
+            list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_LIBRARY_DIRS}")
          endif()
-        endif()
-        # VTK 6.1 for VC 12, 14
-        get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} INTERFACE_LINK_LIBRARIES)
-        if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
-          string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
-          if (HARDCODED_D3D9_LIB)
-            message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")

-            list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
-            set_target_properties (${VTK_LIBRARY} PROPERTIES INTERFACE_LINK_LIBRARIES "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+          if (${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS AND EXISTS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            list (APPEND 3RDPARTY_VTK_DLL_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            if (NOT WIN32)
+              list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${${VTK_LIBRARY}_RUNTIME_LIBRARY_DIRS}")
+            endif()
          endif()
-        endif()

-        get_target_property (TARGET_PROPERTY_IMP_PATH ${VTK_LIBRARY} IMPORTED_IMPLIB_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_IMP_PATH AND EXISTS "${TARGET_PROPERTY_IMP_PATH}")
-          get_filename_component (TARGET_PROPERTY_IMP_DIR "${TARGET_PROPERTY_IMP_PATH}" PATH)
-          list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_IMP_DIR}")
-        endif()
+          # get paths from corresponding properties
+          get_target_property (TARGET_VTK_IMPORT_CONFS ${VTK_LIBRARY} IMPORTED_CONFIGURATIONS)

-        get_target_property (TARGET_PROPERTY_LOCATION_PATH ${VTK_LIBRARY} IMPORTED_LOCATION_${CHOSEN_IMPORT_CONF})
-        if(TARGET_PROPERTY_LOCATION_PATH AND EXISTS "${TARGET_PROPERTY_LOCATION_PATH}")
-          get_filename_component (TARGET_PROPERTY_LOCATION_DIR "${TARGET_PROPERTY_LOCATION_PATH}" PATH)
+          if (TARGET_VTK_IMPORT_CONFS)
+            list (GET TARGET_VTK_IMPORT_CONFS 0 CHOSEN_IMPORT_CONF)

-          if (WIN32)
-            list (APPEND 3RDPARTY_VTK_DLL_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
-          else()
-            list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+            # todo: choose configuration in connection with the build type
+            #if (CMAKE_BUILD_TYPE)
+            #  foreach (IMPORT_CONF ${TARGET_VTK_IMPORT_CONFS})
+            #  endforeach()
+            #endif()
+
+            # Work-around against link failure in case if VTK contains dependency
+            # on DirectX: its run-time is always present on Windows, but SDK can
+            # be absent on current workstation, while not actually needed for 
+            # OCCT linking.
+            # VTK 6.1 for VC 10
+            get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
+              string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              if (HARDCODED_D3D9_LIB)
+                message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
+
+                list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
+                set_target_properties (${VTK_LIBRARY} PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES_${CHOSEN_IMPORT_CONF} "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              endif()
+            endif()
+            # VTK 6.1 for VC 12, 14
+            get_target_property (TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${VTK_LIBRARY} INTERFACE_LINK_LIBRARIES)
+            if(TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES)
+              string (REGEX MATCH "[^;]*d3d[0-9]+[.]lib" HARDCODED_D3D9_LIB "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              if (HARDCODED_D3D9_LIB)
+                message (STATUS "Warning: ${HARDCODED_D3D9_LIB} has been removed from imported dependencies of ${VTK_LIBRARY}")
+
+                list (REMOVE_ITEM TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES ${HARDCODED_D3D9_LIB})
+                set_target_properties (${VTK_LIBRARY} PROPERTIES INTERFACE_LINK_LIBRARIES "${TARGET_PROPERTY_IMP_LINK_INTERFACE_LIBRARIES}")
+              endif()
+            endif()
+
+            get_target_property (TARGET_PROPERTY_IMP_PATH ${VTK_LIBRARY} IMPORTED_IMPLIB_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_IMP_PATH AND EXISTS "${TARGET_PROPERTY_IMP_PATH}")
+              get_filename_component (TARGET_PROPERTY_IMP_DIR "${TARGET_PROPERTY_IMP_PATH}" PATH)
+              list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_IMP_DIR}")
+            endif()
+
+            get_target_property (TARGET_PROPERTY_LOCATION_PATH ${VTK_LIBRARY} IMPORTED_LOCATION_${CHOSEN_IMPORT_CONF})
+            if(TARGET_PROPERTY_LOCATION_PATH AND EXISTS "${TARGET_PROPERTY_LOCATION_PATH}")
+              get_filename_component (TARGET_PROPERTY_LOCATION_DIR "${TARGET_PROPERTY_LOCATION_PATH}" PATH)
+
+              if (WIN32)
+                list (APPEND 3RDPARTY_VTK_DLL_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+              else()
+                list (APPEND 3RDPARTY_VTK_LIBRARY_DIRS "${TARGET_PROPERTY_LOCATION_DIR}")
+              endif()
+            endif()
          endif()
        endif()
      endif()
@@ -196,7 +187,6 @@ if (VTK_FOUND)
      endif()
    endif()
 #  endif()
-endif()

 if (3RDPARTY_VTK_INCLUDE_DIR AND EXISTS "${3RDPARTY_VTK_INCLUDE_DIR}")
  list (APPEND 3RDPARTY_INCLUDE_DIRS ${3RDPARTY_VTK_INCLUDE_DIR})
--- a/adm/genconf.tcl
+++ b/adm/genconf.tcl
@@ -24,44 +24,21 @@
 # load tools
 source [file join [file dirname [info script]] genconfdeps.tcl]

-# proxy variable for implicit file path normalization
-set PRODUCTS_PATH_INPUT "$::PRODUCTS_PATH"
-
 package require Tk

 set aRowIter 0
 set aCheckRowIter 0
 frame .myFrame -padx 5 -pady 5
 pack  .myFrame -fill both -expand 1
-frame .myFrame.myPrjFrame
 frame .myFrame.myVsFrame
 frame .myFrame.myHxxChecks
 frame .myFrame.myChecks

-# project file format
-set SYS_PRJFMT_LIST {}
-set SYS_PRJNAME_LIST {}
-if { "$::tcl_platform(platform)" == "windows" } {
-  lappend ::SYS_PRJFMT_LIST "vcxproj"
-  lappend ::SYS_PRJNAME_LIST "Visual Studio (.vcxproj)"
-}
-if { "$tcl_platform(os)" == "Darwin" } {
-  lappend ::SYS_PRJFMT_LIST "xcd"
-  lappend ::SYS_PRJNAME_LIST "XCode (.xcd)"
-}
-lappend ::SYS_PRJFMT_LIST "cbp"
-lappend ::SYS_PRJNAME_LIST "Code Blocks (.cbp)"
-lappend ::SYS_PRJFMT_LIST "pro"
-lappend ::SYS_PRJNAME_LIST "Qt Creator (.pro)"
-
-set aPrjIndex [lsearch $::SYS_PRJFMT_LIST $::PRJFMT]
-set ::PRJNAME [lindex $::SYS_PRJNAME_LIST $aPrjIndex]
-
 set SYS_VS_LIST {}
 set SYS_VC_LIST {}
 set SYS_VCVARS_LIST {}

-# detect installed Visual Studio 2017+ instances by running vswhere.exe
+# detect installed Visual Studio 2017 instances by running vswhere.exe
 if { ! [catch {exec vswhere.exe -version "\[15.0,15.99\]" -latest -requires Microsoft.VisualStudio.Workload.NativeDesktop -property installationPath} res] } {
  lappend ::SYS_VS_LIST "Visual Studio 2017 (15, toolset v141)"
  lappend ::SYS_VC_LIST "vc141"
@@ -72,21 +49,6 @@ if { ! [catch {exec vswhere.exe -version "\[15.0,15.99\]" -latest -requires Micr
  lappend ::SYS_VC_LIST "vc141-uwp"
  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
 }
-if { ! [catch {exec vswhere.exe -version "\[16.0,16.99\]" -latest -requires Microsoft.VisualStudio.Workload.NativeDesktop -property installationPath} res] } {
-  lappend ::SYS_VS_LIST "Visual Studio 2019 (16, toolset v142)"
-  lappend ::SYS_VC_LIST "vc142"
-  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
-}
-if { ! [catch {exec vswhere.exe -version "\[16.0,16.99\]" -latest -requires Microsoft.VisualStudio.Workload.Universal -property installationPath} res] } {
-  lappend ::SYS_VS_LIST "Visual Studio 2019 (16, toolset v142) UWP"
-  lappend ::SYS_VC_LIST "vc142-uwp"
-  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
-}
-if { ! [catch {exec vswhere.exe -version "\[16.0,16.99\]" -latest -requires Microsoft.VisualStudio.Component.VC.ClangCL -property installationPath} res] } {
-  lappend ::SYS_VS_LIST "Visual Studio 2019 (16, toolset ClangCL)"
-  lappend ::SYS_VC_LIST "vclang"
-  lappend ::SYS_VCVARS_LIST "$res\\VC\\vcvarsall.bat"
-}

 # detect installed Visual Studio instances from global environment
 if { [info exists ::env(VS140COMNTOOLS)] } {
@@ -139,7 +101,6 @@ proc wokdep:gui:Close {} {
 }

 proc wokdep:gui:SwitchConfig {} {
-  set ::PRJFMT [lindex $::SYS_PRJFMT_LIST [.myFrame.myPrjFrame.myPrjCombo current]]
  set ::VCVER  [lindex $::SYS_VC_LIST     [.myFrame.myVsFrame.myVsCombo current]]
  set ::VCVARS [lindex $::SYS_VCVARS_LIST [.myFrame.myVsFrame.myVsCombo current]]

@@ -187,9 +148,6 @@ proc wokdep:gui:UpdateList {} {
  if { "$::HAVE_FFMPEG" == "true" } {
    wokdep:SearchFFmpeg  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
-  if { "$::HAVE_OPENVR" == "true" } {
-    wokdep:SearchOpenVR  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
-  }
  if { "$::HAVE_TBB" == "true" } {
    wokdep:SearchTBB     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
@@ -201,11 +159,7 @@ proc wokdep:gui:UpdateList {} {
  }

  if { "$::HAVE_ZLIB" == "true" } {
-    set aCheckLib "z"
-    if { "$::tcl_platform(platform)" == "windows" } {
-      set aCheckLib "zlib"
-    }
-    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "zlib" "zlib.h" "$aCheckLib" {"zlib"}
+    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "zlib" "zlib.h" "zlib" {"zlib"}
  }
  if { "$::HAVE_LIBLZMA" == "true" } {
    set aCheckLib "lzma"
@@ -214,26 +168,10 @@ proc wokdep:gui:UpdateList {} {
    }
    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "liblzma" "lzma.h" "$aCheckLib" {"lzma" "xz"}
  }
-  if { "$::HAVE_E57" == "true" } {
-    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "e57" "e57/E57Foundation.h" "E57RefImpl" {"e57"}
-    set aCheckLib "xerces-c"
-    if { "$::tcl_platform(platform)" == "windows" } {
-      set aCheckLib "xerces-c_3"
-    }
-    wokdep:SearchStandardLibrary  anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs "xerces-c" "xercesc/sax2/XMLReaderFactory.hpp" "$aCheckLib" {"xerces"}
-  }
-  if { "$::HAVE_RAPIDJSON" == "true" } {
-    wokdep:SearchRapidJson anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
-  }

-  if {"$::BUILD_Inspector" == "true" } {
-    set ::CHECK_QT "true"
+  if { "$::CHECK_QT4" == "true" } {
+    wokdep:SearchQt4     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
-
-  if { "$::CHECK_QT" == "true" } {
-    wokdep:SearchQt     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
-  }
-
  if { "$::CHECK_JDK" == "true" } {
    wokdep:SearchJDK     anIncErrs anLib32Errs anLib64Errs anBin32Errs anBin64Errs
  }
@@ -253,9 +191,9 @@ proc wokdep:gui:BrowseVcVars {} {
 }

 proc wokdep:gui:BrowsePartiesRoot {} {
-  set aResult [tk_chooseDirectory -initialdir $::PRODUCTS_PATH_INPUT -title "Choose a directory"]
+  set aResult [tk_chooseDirectory -initialdir $::PRODUCTS_PATH -title "Choose a directory"]
  if { "$aResult" != "" } {
-    set ::PRODUCTS_PATH_INPUT $aResult
+    set ::PRODUCTS_PATH $aResult
    wokdep:gui:UpdateList
  }
 }
@@ -452,8 +390,6 @@ proc wokdep:gui:Show64Bitness { theRowIter } {
 }

 # Header
-ttk::label    .myFrame.myPrjFrame.myPrjLbl     -text "Project format:" -padding {5 5 20 5}
-ttk::combobox .myFrame.myPrjFrame.myPrjCombo   -values $SYS_PRJNAME_LIST -state readonly -textvariable PRJNAME -width 40
 ttk::label    .myFrame.myVsFrame.myVsLbl       -text "Visual Studio configuration:" -padding {5 5 20 5}
 ttk::combobox .myFrame.myVsFrame.myVsCombo     -values $SYS_VS_LIST -state readonly -textvariable VSVER -width 40
 ttk::combobox .myFrame.myVsFrame.myArchCombo   -values { {32} {64} } -textvariable ARCH -state readonly -width 6
@@ -469,14 +405,12 @@ ttk::label    .myFrame.myHxxChecks.myScutsLbl     -text "Strategy for filling he

 #
 ttk::label    .myFrame.mySrchLbl       -text "3rd-parties search path:" -padding {5 5 80 5}
-entry         .myFrame.mySrchEntry     -textvariable PRODUCTS_PATH_INPUT -width 80
+entry         .myFrame.mySrchEntry     -textvariable PRODUCTS_PATH -width 80
 ttk::button   .myFrame.mySrchBrowseBtn -text "Browse" -command wokdep:gui:BrowsePartiesRoot
 checkbutton   .myFrame.myChecks.myFImageCheck   -offvalue "false" -onvalue "true" -variable HAVE_FREEIMAGE -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myFImageLbl     -text "Use FreeImage"
 checkbutton   .myFrame.myChecks.myTbbCheck      -offvalue "false" -onvalue "true" -variable HAVE_TBB       -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myTbbLbl        -text "Use Intel TBB"
-checkbutton   .myFrame.myChecks.myOpenVrCheck   -offvalue "false" -onvalue "true" -variable HAVE_OPENVR    -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myOpenVrLbl     -text "Use OpenVR"
 if { "$::tcl_platform(os)" != "Darwin" } {
  checkbutton .myFrame.myChecks.myGlesCheck     -offvalue "false" -onvalue "true" -variable HAVE_GLES2     -command wokdep:gui:UpdateList
  ttk::label  .myFrame.myChecks.myGlesLbl       -text "Use OpenGL ES"
@@ -489,9 +423,6 @@ checkbutton   .myFrame.myChecks.myFFmpegCheck   -offvalue "false" -onvalue "true
 ttk::label    .myFrame.myChecks.myFFmpegLbl     -text "Use FFmpeg"
 #checkbutton   .myFrame.myChecks.myOpenClCheck   -offvalue "false" -onvalue "true" -variable HAVE_OPENCL    -command wokdep:gui:UpdateList
 #ttk::label    .myFrame.myChecks.myOpenClLbl     -text "Use OpenCL"
-checkbutton   .myFrame.myChecks.myRapidJsonCheck -offvalue "false" -onvalue "true" -variable HAVE_RAPIDJSON -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myRapidJsonLbl   -text "Use RapidJSON"
-
 checkbutton   .myFrame.myChecks.myMacGLXCheck   -offvalue "false" -onvalue "true" -variable MACOSX_USE_GLX
 ttk::label    .myFrame.myChecks.myMacGLXLbl     -text "Use X11 for windows drawing"
 ttk::label    .myFrame.myChecks.myVtkLbl        -text "Use VTK"
@@ -501,19 +432,12 @@ checkbutton   .myFrame.myChecks.myZLibCheck     -offvalue "false" -onvalue "true
 ttk::label    .myFrame.myChecks.myZLibLbl       -text "Use zlib"
 checkbutton   .myFrame.myChecks.myLzmaCheck     -offvalue "false" -onvalue "true" -variable HAVE_LIBLZMA   -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myLzmaLbl       -text "Use liblzma"
-checkbutton   .myFrame.myChecks.myE57Check      -offvalue "false" -onvalue "true" -variable HAVE_E57       -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myE57Lbl        -text "Use E57"

-checkbutton   .myFrame.myChecks.myQtCheck       -offvalue "false" -onvalue "true" -variable CHECK_QT       -command wokdep:gui:UpdateList
-ttk::label    .myFrame.myChecks.myQtLbl         -text "Search Qt"
+checkbutton   .myFrame.myChecks.myQt4Check      -offvalue "false" -onvalue "true" -variable CHECK_QT4      -command wokdep:gui:UpdateList
+ttk::label    .myFrame.myChecks.myQt4Lbl        -text "Search Qt4"
 checkbutton   .myFrame.myChecks.myJDKCheck      -offvalue "false" -onvalue "true" -variable CHECK_JDK      -command wokdep:gui:UpdateList
 ttk::label    .myFrame.myChecks.myJDKLbl        -text "Search JDK"

-if { "$::tcl_platform(platform)" == "windows" } {
-  checkbutton   .myFrame.myChecks.myInspectorBuild -offvalue "false" -onvalue "true" -variable BUILD_Inspector      -command wokdep:gui:UpdateList
-  ttk::label    .myFrame.myChecks.myInspectorLbl   -text "Build Inspector"
-}
-
 # Additional headers search paths
 ttk::label    .myFrame.myIncLbl    -text "Additional headers search paths:" -padding {5 5 80 5}
 scrollbar     .myFrame.myIncScrl   -command ".myFrame.myIncList yview"
@@ -570,10 +494,6 @@ ttk::button   .myFrame.myClose -text "Close" -command wokdep:gui:Close

 # Create grid
 # Header
-grid .myFrame.myPrjFrame            -row $aRowIter -column 0 -columnspan 10 -sticky w
-grid .myFrame.myPrjFrame.myPrjLbl   -row 0 -column 0
-grid .myFrame.myPrjFrame.myPrjCombo -row 0 -column 1
-incr aRowIter
 if { "$tcl_platform(platform)" == "windows" } {
  grid .myFrame.myVsFrame               -row $aRowIter -column 0 -columnspan 10 -sticky w
  grid .myFrame.myVsFrame.myVsLbl       -row 0 -column 0
@@ -617,8 +537,8 @@ if { "$::tcl_platform(os)" != "Darwin" } {
 grid .myFrame.myChecks.myZLibCheck     -row $aCheckRowIter -column 6 -sticky e
 grid .myFrame.myChecks.myZLibLbl       -row $aCheckRowIter -column 7 -sticky w

-grid .myFrame.myChecks.myQtCheck      -row $aCheckRowIter -column 12 -sticky e
-grid .myFrame.myChecks.myQtLbl        -row $aCheckRowIter -column 13 -sticky w
+grid .myFrame.myChecks.myQt4Check      -row $aCheckRowIter -column 10 -sticky e
+grid .myFrame.myChecks.myQt4Lbl        -row $aCheckRowIter -column 11 -sticky w

 incr aCheckRowIter
 grid .myFrame.myChecks.myFFmpegCheck   -row $aCheckRowIter -column 0 -sticky e
@@ -628,30 +548,19 @@ grid .myFrame.myChecks.myVtkLbl        -row $aCheckRowIter -column 3 -sticky w
 if { "$::tcl_platform(platform)" == "windows" } {
  grid .myFrame.myChecks.myD3dCheck    -row $aCheckRowIter -column 4 -sticky e
  grid .myFrame.myChecks.myD3dLbl      -row $aCheckRowIter -column 5 -sticky w
-} elseif { "$::tcl_platform(os)" == "Darwin" } {
-  grid .myFrame.myChecks.myMacGLXCheck -row $aCheckRowIter -column 4 -sticky e
-  grid .myFrame.myChecks.myMacGLXLbl   -row $aCheckRowIter -column 5 -sticky w
 }
 grid .myFrame.myChecks.myLzmaCheck     -row $aCheckRowIter -column 6 -sticky e
 grid .myFrame.myChecks.myLzmaLbl       -row $aCheckRowIter -column 7 -sticky w
-grid .myFrame.myChecks.myJDKCheck      -row $aCheckRowIter -column 12 -sticky e
-grid .myFrame.myChecks.myJDKLbl        -row $aCheckRowIter -column 13 -sticky w
+grid .myFrame.myChecks.myJDKCheck      -row $aCheckRowIter -column 10 -sticky e
+grid .myFrame.myChecks.myJDKLbl        -row $aCheckRowIter -column 11 -sticky w

 incr aCheckRowIter
-grid .myFrame.myChecks.myRapidJsonCheck -row $aCheckRowIter -column 0 -sticky e
-grid .myFrame.myChecks.myRapidJsonLbl   -row $aCheckRowIter -column 1 -sticky w
-grid .myFrame.myChecks.myOpenVrCheck   -row $aCheckRowIter -column 4 -sticky e
-grid .myFrame.myChecks.myOpenVrLbl     -row $aCheckRowIter -column 5 -sticky w
-grid .myFrame.myChecks.myE57Check      -row $aCheckRowIter -column 6 -sticky e
-grid .myFrame.myChecks.myE57Lbl        -row $aCheckRowIter -column 7 -sticky w
-
-if { "$::tcl_platform(platform)" == "windows" } {
-  grid .myFrame.myChecks.myInspectorBuild      -row $aCheckRowIter -column 12 -sticky e
-  grid .myFrame.myChecks.myInspectorLbl        -row $aCheckRowIter -column 13 -sticky w
+if { "$::tcl_platform(os)" == "Darwin" } {
+  grid .myFrame.myChecks.myMacGLXCheck -row $aCheckRowIter -column 0 -sticky e
+  grid .myFrame.myChecks.myMacGLXLbl   -row $aCheckRowIter -column 1 -sticky w
+  incr aCheckRowIter
 }

-incr aCheckRowIter
-
 # Additional headers search paths
 grid .myFrame.myIncLbl    -row $aRowIter -column 0 -columnspan 10 -sticky w
 incr aRowIter
@@ -683,9 +592,6 @@ grid .myFrame.mySave  -row $aRowIter -column 4 -columnspan 2
 grid .myFrame.myClose -row $aRowIter -column 6 -columnspan 2

 # Bind events
-bind .myFrame.myPrjFrame.myPrjCombo <<ComboboxSelected>> {
-  wokdep:gui:SwitchConfig
-}
 bind .myFrame.myVsFrame.myVsCombo <<ComboboxSelected>> {
  wokdep:gui:SwitchConfig
 }
@@ -694,7 +600,6 @@ bind .myFrame.myVsFrame.myArchCombo <<ComboboxSelected>> {
 }

 .myFrame.mySrchEntry configure -validate all -validatecommand {
-  set ::PRODUCTS_PATH [file normalize "$::PRODUCTS_PATH_INPUT"]
  #return [file exists "$::PRODUCTS_PATH"]
  wokdep:gui:UpdateList
  return 1
--- a/adm/genconfdeps.tcl
+++ b/adm/genconfdeps.tcl
@@ -27,10 +27,8 @@ if { "$tcl_platform(platform)" == "unix" } {
  set SYS_EXE_SUFFIX    ""
  if { "$tcl_platform(os)" == "Darwin" } {
    set SYS_LIB_SUFFIX "dylib"
-    set PRJFMT "xcd"
  } else {
    set SYS_LIB_SUFFIX "so"
-    set PRJFMT "cbp"
  }
  set VCVER "gcc"
  set VCVARS ""
@@ -41,7 +39,6 @@ if { "$tcl_platform(platform)" == "unix" } {
  set SYS_EXE_SUFFIX    ".exe"
  set VCVER  "vc10"
  set VCVARS ""
-  set PRJFMT "vcxproj"
 }

 set SHORTCUT_HEADERS "ShortCut"
@@ -68,7 +65,7 @@ if { [info exists ::env(SHORTCUT_HEADERS)] } {
 }

 # fetch environment variables (e.g. set by custom.sh or custom.bat) and set them as tcl variables with the same name
-set THE_ENV_VARIABLES {HAVE_FREEIMAGE HAVE_FFMPEG HAVE_TBB HAVE_GLES2 HAVE_D3D HAVE_VTK HAVE_ZLIB HAVE_LIBLZMA HAVE_E57 HAVE_RAPIDJSON HAVE_OPENVR HAVE_OPENCL CHECK_QT4 CHECK_JDK MACOSX_USE_GLX HAVE_RelWithDebInfo BUILD_Inspector}
+set THE_ENV_VARIABLES {HAVE_FREEIMAGE HAVE_FFMPEG HAVE_TBB HAVE_GLES2 HAVE_D3D HAVE_VTK HAVE_ZLIB HAVE_LIBLZMA HAVE_OPENCL CHECK_QT4 CHECK_JDK MACOSX_USE_GLX HAVE_RelWithDebInfo}
 foreach anEnvIter $THE_ENV_VARIABLES {
  set ${anEnvIter} "false"
  if { [info exists ::env(${anEnvIter})] } {
@@ -85,14 +82,11 @@ if { "$tcl_platform(platform)" != "windows" } {
  set HAVE_D3D ""
  set HAVE_RelWithDebInfo ""
 }
-foreach anEnvIter {ARCH VCVER VCVARS PRJFMT } {
+foreach anEnvIter {ARCH VCVER VCVARS PRODUCTS_PATH} {
  if { [info exists ::env(${anEnvIter})] } {
    set ${anEnvIter} "$::env(${anEnvIter})"
  }
 }
-if { [info exists ::env(PRODUCTS_PATH)] } {
-  set PRODUCTS_PATH [file normalize "$::env(PRODUCTS_PATH)"]
-}

 if { [info exists ::env(CSF_OPT_INC)] } {
  set CSF_OPT_INC [split "$::env(CSF_OPT_INC)" $::SYS_PATH_SPLITTER]
@@ -146,12 +140,9 @@ proc wokdep:SearchHeader {theHeader} {
 # Search library file in $::CSF_OPT_LIB* and standard paths
 proc wokdep:SearchLib {theLib theBitness {theSearchPath ""}} {
  if { "$theSearchPath" != "" } {
-    set aPath  "${theSearchPath}/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
-    set aPath2 "${theSearchPath}/${::SYS_LIB_PREFIX}${theLib}.a"
+    set aPath "${theSearchPath}/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
    if { [file exists "$aPath"] } {
      return "$aPath"
-    } elseif { "$::tcl_platform(platform)" != "windows" && [file exists "$aPath2"] } {
-      return "$aPath2"
    } else {
      return ""
    }
@@ -159,42 +150,31 @@ proc wokdep:SearchLib {theLib theBitness {theSearchPath ""}} {

  # search in custom paths
  foreach aLibPath [set ::CSF_OPT_LIB$theBitness] {
-    set aPath  "${aLibPath}/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
-    set aPath2 "${aLibPath}/${::SYS_LIB_PREFIX}${theLib}.a"
+    set aPath "${aLibPath}/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
    if { [file exists "$aPath"] } {
      return "$aPath"
-    } elseif { "$::tcl_platform(platform)" != "windows" && [file exists "$aPath2"] } {
-      return "$aPath2"
    }
  }

  # search in system
  if { "$::ARCH" == "$theBitness"} {
-    set aPath  "/usr/lib/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
-    set aPath2 "/usr/lib/${::SYS_LIB_PREFIX}${theLib}.a"
+    set aPath "/usr/lib/${::SYS_LIB_PREFIX}${theLib}.${::SYS_LIB_SUFFIX}"
    if { [file exists "$aPath"] } {
      return "$aPath"
-    } elseif { [file exists "$aPath2"] } {
-      return "$aPath2"
    }
  }

+
  if { "$::tcl_platform(os)" == "Linux" } {
    if { "$theBitness" == "64" } {
-      set aPath  "/usr/lib/x86_64-linux-gnu/lib${theLib}.so"
-      set aPath2 "/usr/lib/x86_64-linux-gnu/lib${theLib}.a"
+      set aPath "/usr/lib/x86_64-linux-gnu/lib${theLib}.so"
      if { [file exists "$aPath"] } {
        return "$aPath"
-      } elseif { [file exists "$aPath2"] } {
-        return "$aPath2"
      }
    } else {
-      set aPath  "/usr/lib/i386-linux-gnu/lib${theLib}.so"
-      set aPath2 "/usr/lib/i386-linux-gnu/lib${theLib}.a"
+      set aPath "/usr/lib/i386-linux-gnu/lib${theLib}.so"
      if { [file exists "$aPath"] } {
        return "$aPath"
-      } elseif { [file exists "$aPath2"] } {
-        return "$aPath2"
      }
    }
  }
@@ -241,11 +221,7 @@ proc wokdep:Preferred {theList theCmpl theArch} {

  # keep only two first digits in "vc141"
  if { ! [regexp {^vc[0-9][0-9]} $theCmpl aCmpl] } {
-    if { [regexp {^vclang} $theCmpl] } { 
-      set aCmpl vc14
-    } else {
-      set aCmpl $theCmpl
-    }
+    set aCmpl $theCmpl
  }

  set aShortList {}
@@ -625,59 +601,6 @@ proc wokdep:SearchFFmpeg {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBi
  return "$isFound"
 }

-# Search OpenVR SDK placement
-proc wokdep:SearchOpenVR {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
-  upvar $theErrInc   anErrInc
-  upvar $theErrLib32 anErrLib32
-  upvar $theErrLib64 anErrLib64
-  upvar $theErrBin32 anErrBin32
-  upvar $theErrBin64 anErrBin64
-
-  set isFound "true"
-  set anOpenVrHPath [wokdep:SearchHeader "openvr.h"]
-  if { "$anOpenVrHPath"  == "" } {
-    set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{openvr}*] "$::VCVER" "$::ARCH" ]
-    if { "$aPath" != "" && [file exists "$aPath/include/openvr.h"] } {
-      lappend ::CSF_OPT_INC "$aPath/include"
-    } elseif { "$aPath" != "" && [file exists "$aPath/headers/openvr.h"] } {
-      lappend ::CSF_OPT_INC "$aPath/headers"
-    } else {
-      lappend anErrInc "Error: 'openvr.h' not found (OpenVR)"
-      set isFound "false"
-    }
-  }
-
-  set aPlatform "unknown"
-  if { "$::tcl_platform(platform)" == "windows" } {
-    set aPlatform "win"
-  } elseif { "$::tcl_platform(os)" == "Darwin" } {
-    set aPlatform "osx"
-  } elseif { "$::tcl_platform(os)" == "Linux" } {
-    set aPlatform "linux"
-  }
-
-  foreach anArchIter {64 32} {
-    set anOpenVrLibPath [wokdep:SearchLib "openvr_api" "$anArchIter"]
-    if { "$anOpenVrLibPath" == "" } {
-      set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{openvr}*] "$::VCVER" "$anArchIter" ]
-      set anOpenVrLibPath  [wokdep:SearchLib "openvr_api" "$anArchIter" "$aPath/lib/${aPlatform}${anArchIter}"]
-      set anOpenVrLibPath2 [wokdep:SearchLib "openvr_api" "$anArchIter" "$aPath/lib"]
-      if { "$anOpenVrLibPath" != "" } {
-        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib/${aPlatform}${anArchIter}"
-        lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin/${aPlatform}${anArchIter}"
-      } elseif { "$anOpenVrLibPath2" != "" } {
-        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib"
-        lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin"
-      } else {
-        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}openvr_api.${::SYS_LIB_SUFFIX}' not found (OpenVR)"
-        if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
-      }
-    }
-  }
-
-  return "$isFound"
-}
-
 # Search TBB library placement
 proc wokdep:SearchTBB {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
  upvar $theErrInc   anErrInc
@@ -688,11 +611,7 @@ proc wokdep:SearchTBB {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64

  # keep only two first digits in "vc141"
  if { ! [regexp {^vc[0-9][0-9]} ${::VCVER} aVcLib] } {
-    if { [regexp {^vclang} ${::VCVER}] } {
-      set aVcLib vc14
-    } else {
-      set aVcLib ${::VCVER}
-    }
+    set aVcLib ${::VCVER}
  }

  set isFound "true"
@@ -936,25 +855,6 @@ proc wokdep:SearchGLES {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin6
  return "$isFound"
 }

-# Search RapidJSON headers
-proc wokdep:SearchRapidJson {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
-  upvar $theErrInc anErrInc
-
-  set isFound "true"
-  set aRJHPath [wokdep:SearchHeader "rapidjson/rapidjson.h"]
-  if { "$aRJHPath"  == "" } {
-    set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{rapidjson}*] "$::VCVER" "$::ARCH" ]
-    if { "$aPath" != "" && [file exists "$aPath/include/rapidjson/rapidjson.h"] } {
-      lappend ::CSF_OPT_INC "$aPath/include"
-    } else {
-      lappend anErrInc "Error: 'rapidjson/rapidjson.h' not found (RapidJSON)"
-      set isFound "false"
-    }
-  }
-
-  return "$isFound"
-}
-
 # Auxiliary function, gets VTK version to set default search directory
 proc wokdep:VtkVersion { thePath } {
  set aResult "6.1"
@@ -1075,8 +975,8 @@ proc wokdep:SearchVTK {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64
  return "$isFound"
 }

-# Search Qt libraries placement
-proc wokdep:SearchQt {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
+# Search Qt4 libraries placement
+proc wokdep:SearchQt4 {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64} {
  upvar $theErrInc   anErrInc
  upvar $theErrLib32 anErrLib32
  upvar $theErrLib64 anErrLib64
@@ -1084,46 +984,53 @@ proc wokdep:SearchQt {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64}
  upvar $theErrBin64 anErrBin64

  set isFound "true"
-  set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt}*] "$::VCVER" "$::ARCH" ] 
-  set aQMsgBoxHPath [wokdep:SearchHeader "QtGui/qguiapplication.h"]
+  set aQMsgBoxHPath [wokdep:SearchHeader "QtGui/qmessagebox.h"]
  if { "$aQMsgBoxHPath" == "" } {
-    if { "$aPath" != "" && [file exists "$aPath/include/QtGui/qguiapplication.h"] } {
+    set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$::ARCH" ]
+    if { "$aPath" != "" && [file exists "$aPath/include/QtGui/qmessagebox.h"] } {
      lappend ::CSF_OPT_INC "$aPath/include"
      lappend ::CSF_OPT_INC "$aPath/include/Qt"
      lappend ::CSF_OPT_INC "$aPath/include/QtGui"
      lappend ::CSF_OPT_INC "$aPath/include/QtCore"
-      lappend ::CSF_OPT_INC "$aPath/include/QtWidgets"
-      lappend ::CSF_OPT_INC "$aPath/include/QtXml"
    } else {
-      lappend anErrInc "Error: 'QtGui/qguiapplication.h' not found"
+      if { [file exists "/usr/include/qt4/QtGui/qmessagebox.h"] } {
+        lappend ::CSF_OPT_INC "/usr/include/qt4"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/Qt"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/QtGui"
+        lappend ::CSF_OPT_INC "/usr/include/qt4/QtCore"
+      } else {
+        lappend anErrInc "Error: 'QtGui/qmessagebox.h' not found (Qt4)"
        set isFound "false"
+      }
    }
  }

  set aQtGuiLibName "QtGui"
  if { "$::tcl_platform(platform)" == "windows" } {
-    set aQtGuiLibName "Qt5Gui"
+    set aQtGuiLibName "QtGui4"
  }

  foreach anArchIter {64 32} {
    set aQMsgBoxLibPath [wokdep:SearchLib "${aQtGuiLibName}" "$anArchIter"]
    if { "$aQMsgBoxLibPath" == "" } {
+      set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$anArchIter" ]
      set aQMsgBoxLibPath [wokdep:SearchLib "${aQtGuiLibName}" "$anArchIter" "$aPath/lib"]
      if { "$aQMsgBoxLibPath" != "" } {
        lappend ::CSF_OPT_LIB$anArchIter "$aPath/lib"
      } else {
-        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}${aQtGuiLibName}.${::SYS_LIB_SUFFIX}' not found (Qt)"
+        lappend anErrLib$anArchIter "Error: '${::SYS_LIB_PREFIX}${aQtGuiLibName}.${::SYS_LIB_SUFFIX}' not found (Qt4)"
        if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
      }
    }
    if { "$::tcl_platform(platform)" == "windows" } {
-      set aQMsgBoxDllPath [wokdep:SearchBin "${aQtGuiLibName}.dll" "$anArchIter"]
+      set aQMsgBoxDllPath [wokdep:SearchBin "QtGui4.dll" "$anArchIter"]
      if { "$aQMsgBoxDllPath" == "" } {
-        set aQMsgBoxDllPath [wokdep:SearchBin "${aQtGuiLibName}.dll" "$anArchIter" "$aPath/bin"]
+        set aPath [wokdep:Preferred [glob -nocomplain -directory "$::PRODUCTS_PATH" -type d *{qt4}*] "$::VCVER" "$anArchIter" ]
+        set aQMsgBoxDllPath [wokdep:SearchBin "QtGui4.dll" "$anArchIter" "$aPath/bin"]
        if { "$aQMsgBoxDllPath" != "" } {
          lappend ::CSF_OPT_BIN$anArchIter "$aPath/bin"
        } else {
-          lappend anErrBin$anArchIter "Error: '${aQtGuiLibName}.dll' not found (Qt)"
+          lappend anErrBin$anArchIter "Error: 'QtGui4.dll' not found (Qt4)"
          if { "$::ARCH" == "$anArchIter"} { set isFound "false" }
        }
      }
@@ -1211,33 +1118,15 @@ proc wokdep:SearchX11 {theErrInc theErrLib32 theErrLib64 theErrBin32 theErrBin64
  return "$isFound"
 }

-# Returns OCCT version string from file Standard_Version.hxx (if available)
-proc wokdep:DetectCasVersion {} {
-  set occt_ver 7.0.0
-  set aCasRoot [file normalize [file dirname [info script]]]
-  set filename "${aCasRoot}/src/Standard/Standard_Version.hxx"
-  if { [file exists $filename] } {
-    set fh [open $filename "r"]
-    set fh_loaded [read $fh]
-    close $fh
-    regexp {[^/]\s*#\s*define\s+OCC_VERSION_COMPLETE\s+\"([^\s]*)\"} $fh_loaded dummy occt_ver
-  } else {
-    puts "Error: file '$filename' not found"
-  }
-  return $occt_ver
-}
-
 # Generate (override) custom environment file
 proc wokdep:SaveCustom {} {
-  set aGenInfo "This environment file was generated by genconf.tcl script at [clock format [clock seconds] -format "%Y.%m.%d %H:%M"]"
  if { "$::tcl_platform(platform)" == "windows" } {
    set aCustomFilePath "./custom.bat"
    set aFile [open $aCustomFilePath "w"]
    puts $aFile "@echo off"
-    puts $aFile "rem $aGenInfo"
+    puts $aFile "rem This environment file was generated by wok_depsgui.tcl script at [clock format [clock seconds] -format "%Y.%m.%d %H:%M"]"

    puts $aFile ""
-    puts $aFile "set PRJFMT=$::PRJFMT"
    puts $aFile "set VCVER=$::VCVER"
    puts $aFile "set ARCH=$::ARCH"
    puts $aFile "set VCVARS=$::VCVARS"
@@ -1257,41 +1146,26 @@ proc wokdep:SaveCustom {} {
    }

    set aStringInc [join $::CSF_OPT_INC $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringInc [regsub -all "$::PRODUCTS_PATH" $aStringInc "%PRODUCTS_PATH%"]
-    }
    puts $aFile ""
    puts $aFile "rem Additional headers search paths"
    puts $aFile "set \"CSF_OPT_INC=$aStringInc\""

    set aStringLib32 [join $::CSF_OPT_LIB32 $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringLib32 [regsub -all "$::PRODUCTS_PATH" $aStringLib32 "%PRODUCTS_PATH%"]
-    }
    puts $aFile ""
    puts $aFile "rem Additional libraries (32-bit) search paths"
    puts $aFile "set \"CSF_OPT_LIB32=$aStringLib32\""

    set aStringLib64 [join $::CSF_OPT_LIB64 $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringLib64 [regsub -all "$::PRODUCTS_PATH" $aStringLib64 "%PRODUCTS_PATH%"]
-    }
    puts $aFile ""
    puts $aFile "rem Additional libraries (64-bit) search paths"
    puts $aFile "set \"CSF_OPT_LIB64=$aStringLib64\""

    set aStringBin32 [join $::CSF_OPT_BIN32 $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringBin32 [regsub -all "$::PRODUCTS_PATH" $aStringBin32 "%PRODUCTS_PATH%"]
-    }
    puts $aFile ""
    puts $aFile "rem Additional (32-bit) search paths"
    puts $aFile "set \"CSF_OPT_BIN32=$aStringBin32\""

    set aStringBin64 [join $::CSF_OPT_BIN64 $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringBin64 [regsub -all "$::PRODUCTS_PATH" $aStringBin64 "%PRODUCTS_PATH%"]
-    }
    puts $aFile ""
    puts $aFile "rem Additional (64-bit) search paths"
    puts $aFile "set \"CSF_OPT_BIN64=$aStringBin64\""
@@ -1301,10 +1175,9 @@ proc wokdep:SaveCustom {} {
    set aCustomFilePath "./custom.sh"
    set aFile [open $aCustomFilePath "w"]
    puts $aFile "#!/bin/bash"
-    puts $aFile "# $aGenInfo"
+    puts $aFile "# This environment file was generated by wok_depsgui.tcl script at [clock format [clock seconds] -format "%Y.%m.%d %H:%M"]"

    puts $aFile ""
-    puts $aFile "export PRJFMT=$::PRJFMT"
    puts $aFile "export ARCH=$::ARCH"
    puts $aFile "export SHORTCUT_HEADERS=$::SHORTCUT_HEADERS"

@@ -1322,88 +1195,22 @@ proc wokdep:SaveCustom {} {
    }

    set aStringInc [join $::CSF_OPT_INC $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringInc [regsub -all "$::PRODUCTS_PATH" $aStringInc "\${PRODUCTS_PATH}"]
-    }
    puts $aFile ""
    puts $aFile "# Additional headers search paths"
    puts $aFile "export CSF_OPT_INC=\"$aStringInc\""

-    set aStringLib [join [set ::CSF_OPT_LIB$::ARCH] $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringLib [regsub -all "$::PRODUCTS_PATH" $aStringLib "\${PRODUCTS_PATH}"]
-    }
+    set aStringLib$::ARCH [join [set ::CSF_OPT_LIB$::ARCH] $::SYS_PATH_SPLITTER]
    puts $aFile ""
    puts $aFile "# Additional libraries ($::ARCH-bit) search paths"
-    puts $aFile "export CSF_OPT_LIB$::ARCH=\"[set aStringLib]\""
+    puts $aFile "export CSF_OPT_LIB$::ARCH=\"[set aStringLib$::ARCH]\""

-    set aStringBin [join [set ::CSF_OPT_BIN$::ARCH] $::SYS_PATH_SPLITTER]
-    if { "$::PRODUCTS_PATH" != "" } {
-      set aStringBin [regsub -all "$::PRODUCTS_PATH" $aStringBin "\${PRODUCTS_PATH}"]
-    }
+    set aStringBin$::ARCH [join [set ::CSF_OPT_BIN$::ARCH] $::SYS_PATH_SPLITTER]
    puts $aFile ""
    puts $aFile "# Additional ($::ARCH-bit) search paths"
-    puts $aFile "export CSF_OPT_BIN$::ARCH=\"[set aStringBin]\""
+    puts $aFile "export CSF_OPT_BIN$::ARCH=\"[set aStringBin$::ARCH]\""

    close $aFile
  }
+
  puts "Configuration saved to file '$aCustomFilePath'"
-
-  # generate custom.auto.pri
-  set toExportCustomPri 1
-  if { $toExportCustomPri == 1 } {
-    set aCasVer [wokdep:DetectCasVersion]
-    set aCustomFilePath "./adm/qmake/custom.auto.pri"
-    set aFile [open $aCustomFilePath "w"]
-    puts $aFile "# $aGenInfo"
-
-    puts $aFile ""
-    puts $aFile "VERSION=$aCasVer"
-    puts $aFile "PRODUCTS_PATH=\"$::PRODUCTS_PATH\""
-
-    puts $aFile ""
-    puts $aFile "# Optional 3rd-parties switches"
-    foreach anEnvIter $::THE_ENV_VARIABLES {
-      set aName ${anEnvIter}
-      set aValue [set ::${anEnvIter}]
-      if { "$aValue" == "true" } {
-        puts $aFile "CONFIG += ${aName}"
-      } else {
-        #puts $aFile "CONFIG -= ${aName}"
-      }
-    }
-
-    puts $aFile ""
-    puts $aFile "# Additional headers search paths"
-    foreach anIncPath $::CSF_OPT_INC {
-      if { "$::PRODUCTS_PATH" != "" } {
-        set anIncPath [regsub -all "$::PRODUCTS_PATH" $anIncPath "\$\$\{PRODUCTS_PATH\}"]
-      }
-      puts $aFile "INCLUDEPATH += \"${anIncPath}\""
-    }
-
-    puts $aFile ""
-    puts $aFile "# Additional libraries search paths"
-    foreach aLibPath [set ::CSF_OPT_LIB$::ARCH] {
-      if { "$::PRODUCTS_PATH" != "" } {
-        set aLibPath [regsub -all "$::PRODUCTS_PATH" $aLibPath "\$\$\{PRODUCTS_PATH\}"]
-      }
-      puts $aFile "LIBS += -L\"${aLibPath}\""
-    }
-
-    if { "$::tcl_platform(platform)" == "windows" } {
-      puts $aFile ""
-      puts $aFile "# Additional DLLs search paths"
-      foreach aDllPath [set ::CSF_OPT_BIN$::ARCH] {
-        if { "$::PRODUCTS_PATH" != "" } {
-          set aDllPath [regsub -all "$::PRODUCTS_PATH" $aDllPath "\$\$\{PRODUCTS_PATH\}"]
-        }
-        puts $aFile "LIBS += -L\"${aDllPath}\""
-      }
-    }
-
-    puts $aFile ""
-    close $aFile
-    puts "Configuration saved to file '$aCustomFilePath'"
-  }
 }
--- a/adm/genproj.tcl
+++ b/adm/genproj.tcl
--- a/adm/qmake/.gitignore
+++ b/adm/qmake/.gitignore
@@ -1,5 +0,0 @@
-/*/*.pro
-/*/*/*.pro
-*.pro.user
-custom.pri
-custom.auto.pri
--- a/adm/qmake/OccCppConfig.pri
+++ b/adm/qmake/OccCppConfig.pri
@@ -1,157 +0,0 @@
-# This is project defines C++ compilation rules for building an OCCT Toolkit.
-
-exists(custom.auto.pri) { include(custom.auto.pri) }
-exists(custom.pri)      { include(custom.pri) }
-
-# Disable some dummy Qt defaults
-QT -= core gui
-CONFIG -= qt app_bundle
-CONFIG -= qml_debug
-CONFIG -= debug_and_release
-
-OccGitRoot = $$_PRO_FILE_PWD_/../../../..
-
-# Define compilation flags
-CONFIG += warn_on
-QMAKE_CFLAGS_WARN_ON   = -Wall
-QMAKE_CXXFLAGS_WARN_ON = -Wall
-win32 {
-  QMAKE_CFLAGS_WARN_ON   = -W4
-  QMAKE_CXXFLAGS_WARN_ON = -W4
-  QMAKE_CXXFLAGS_EXCEPTIONS_ON = /EHa
-  QMAKE_CXXFLAGS_STL_ON = /EHa
-
-  QMAKE_CXXFLAGS += -fp:precise
-  #QMAKE_CXXFLAGS -= -Zc:throwingNew
-  #QMAKE_CXXFLAGS -= -Zc:rvalueCast
-
-  QMAKE_LFLAGS += -INCREMENTAL:NO
-
-  CONFIG(debug, debug|release) {
-    QMAKE_CXXFLAGS += -Od
-    QMAKE_CXXFLAGS += -Ob1
-  }
-
-  DEFINES -= WIN32
-  DEFINES -= WIN64
-  DEFINES += _CRT_SECURE_NO_WARNINGS
-  DEFINES += _CRT_NONSTDC_NO_DEPRECATE
-  DEFINES += _SCL_SECURE_NO_WARNINGS
-} else {
-  CONFIG += c++11
-  QMAKE_CFLAGS   += -fexceptions
-  QMAKE_CXXFLAGS += -fexceptions
-  QMAKE_CXXFLAGS += -fvisibility=default
-  DEFINES += OCC_CONVERT_SIGNALS
-  mac {
-    iphoneos {
-      QMAKE_IOS_DEPLOYMENT_TARGET = 8.0
-    } else {
-      QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.14
-    }
-  }
-}
-!CONFIG(debug, debug|release) {
-  # disable exceptions in Release builds
-  DEFINES += No_Exception
-  HAVE_RelWithDebInfo {
-    win32 {
-      CONFIG += force_debug_info
-    }
-  }
-}
-
-# Define output folder depending on compiler name
-MY_BITNESS = 32
-
-equals(QMAKE_TARGET.arch, x86_64) | equals(QMAKE_HOST.arch, x86_64) { MY_BITNESS = 64 }
-equals(ANDROID_TARGET_ARCH, arm64-v8a) { MY_BITNESS = 64 }
-has64Target = $$find(QMAKE_TARGET.arch, "x64")
-count(has64Target, 1) { MY_BITNESS = 64 }
-
-MY_PLATFORM = platform
-CONFIG(iphonesimulator, iphoneos|iphonesimulator) { MY_PLATFORM = iphonesimulator
-} else:CONFIG(iphoneos, iphoneos|iphonesimulator) { MY_PLATFORM = iphoneos
-} else:android { MY_PLATFORM = android-$$ANDROID_TARGET_ARCH
-} else:win32   { MY_PLATFORM = win$$MY_BITNESS
-} else:mac     { MY_PLATFORM = mac
-} else:linux   { MY_PLATFORM = lin
-} else:unix    { MY_PLATFORM = unix
-} else { warning (Unknown platform. "$$MY_PLATFORM" is used) }
-
-MY_COMPILER = compiler
-MY_VC_VER = 0
-android-g++ {
-  MY_COMPILER = gcc
-} else:clang {
-  MY_COMPILER = clang
-} else:gcc {
-  MY_COMPILER = gcc
-} else:win32-msvc2010 {
-  MY_COMPILER = vc10
-  MY_VC_VER = 10
-} else:win32-msvc2012 {
-  MY_COMPILER = vc11
-  MY_VC_VER = 11
-} else:win32-msvc2013 {
-  MY_COMPILER = vc12
-  MY_VC_VER = 12
-} else:win32-msvc2015 {
-  MY_COMPILER = vc14
-  MY_VC_VER = 14
-} else:win32-msvc2017 {
-  MY_COMPILER = vc14
-  MY_VC_VER = 14
-} else:win32-msvc {
-  MY_COMPILER = vc14
-  MY_VC_VER = 14
-  aMsvcVer = $$(VisualStudioVersion)
-  equals(aMsvcVer, 14.0){
-    # VS2015, vc140
-  } else:equals(aMsvcVer, 15.0){
-    # VS2015, vc141
-  } else:equals(aMsvcVer, 16.0){
-    # VS2019, vc142
-  } else {
-    warning (Unknown msvc version. "$$MY_COMPILER" is used)
-  }
-} else {
-  warning (Unknown compiler. "$$MY_COMPILER" is used)
-}
-MY_PLATFORM_AND_COMPILER = $$MY_PLATFORM/$$MY_COMPILER
-#warning (The platform is "$$MY_PLATFORM"; bitness is "$$MY_BITNESS"; compiler is "$$MY_COMPILER")
-
-CONFIG(debug, debug|release) { MY_BUILDTYPE = d }
-
-DESTDIR = $$OccGitRoot/$${MY_PLATFORM_AND_COMPILER}/lib$${MY_BUILDTYPE}
-win32 {
-  DESTDIR  = $$OccGitRoot/win$${MY_BITNESS}/vc$${MY_VC_VER}/bin$${MY_BUILDTYPE}
-  aLibDest = $$DESTDIR/../lib$${MY_BUILDTYPE}
-  #DLLDESTDIR = $$DESTDIR/../bin$${MY_BUILDTYPE}
-
-  # dummy target creating lib/libd folder
-  occtkgen_libfolder.input  = $$_PRO_FILE_PWD_/../../OcctDummy.in
-  occtkgen_libfolder.output = $$aLibDest/dummy.tmp
-  occtkgen_libfolder.config = verbatim
-  QMAKE_SUBSTITUTES += occtkgen_libfolder
-
-  LIBS += -L$$aLibDest
-  equals(TEMPLATE, lib) {
-    QMAKE_CLEAN += $$DESTDIR/$${TARGET}.dll
-    QMAKE_CLEAN += $$aLibDest/$${TARGET}.lib
-    QMAKE_CLEAN += $$aLibDest/$${TARGET}.exp
-  } else {
-    QMAKE_CLEAN += $$DESTDIR/$${TARGET}.exe
-  }
-  QMAKE_CLEAN += $$DESTDIR/$${TARGET}.pdb
-  QMAKE_LFLAGS += -PDB:"$$DESTDIR/$${TARGET}.pdb"
-  QMAKE_LFLAGS += -IMPLIB:"$$aLibDest/$${TARGET}.lib"
-} else {
-  LIBS += -L$$DESTDIR
-  equals(TEMPLATE, app) {
-    DESTDIR = $$OccGitRoot/$${MY_PLATFORM_AND_COMPILER}/bin$${MY_BUILDTYPE}
-  }
-}
-
-#OBJECTS_DIR = $$DESTDIR/../obj$${MY_BUILDTYPE}/$${TARGET}
-OBJECTS_DIR = $$DESTDIR/../obj$${MY_BUILDTYPE}
--- a/adm/qmake/OccModule.pri
+++ b/adm/qmake/OccModule.pri
@@ -1,36 +0,0 @@
-# This is a project template file defining an OCCT Module.
-# This project should be included with predefined OCC_MODULE_NAME variable.
-TEMPLATE = subdirs
-exists(custom.auto.pri) { include(custom.auto.pri) }
-exists(custom.pri)      { include(custom.pri) }
-
-# Iterate over Toolkits within current Module and generate sub-project per Toolkit
-aModuleList = $$cat(../MODULES, lines)
-for (aModuleIter, aModuleList) {
-  #aTkList = $$list($$aModuleIter) - this doesn't work, qmake bug?
-  aModule = $$first($$list($$aModuleIter))
-  equals (aModule, $$OCC_MODULE_NAME) {
-    for (aToolKit, $$list($$aModuleIter)) {
-      toSkipToolkit = 0
-      equals (aToolKit, $$OCC_MODULE_NAME)      { toSkipToolkit = 1 }
-      !HAVE_VTK:equals (aToolKit, "TKIVtk")     { toSkipToolkit = 1 }
-      !HAVE_VTK:equals (aToolKit, "TKIVtkDraw") { toSkipToolkit = 1 }
-      !win32:   equals (aToolKit, "TKD3DHost")  { toSkipToolkit = 1 }
-      equals (toSkipToolkit, 0) {
-        #warning(aToolKit($$OCC_MODULE_NAME)=$$aToolKit)
-        eval(occtkgen_$${aToolKit}.input  = $$_PRO_FILE_PWD_/../OccToolkit.pro.in)
-        eval(occtkgen_$${aToolKit}.output = $$_PRO_FILE_PWD_/$${aToolKit}/$${aToolKit}.pro)
-        eval(occtkgen_$${aToolKit}.config = verbatim)
-        eval(QMAKE_SUBSTITUTES += occtkgen_$${aToolKit})
-        SUBDIRS += $${aToolKit}
-
-        aModExtList = $$cat(../../src/$${aToolKit}/EXTERNLIB, lines)
-        aTkDepends = $${aToolKit}.depends
-        for (aModExtIter, aModExtList) {
-          contains ($$list($$aModuleIter), $$aModExtIter) { eval ($${aTkDepends} += $$aModExtIter) }
-        }
-        #warning($$aToolKit depends on: $$reverse($${aTkDepends}))
-      }
-    }
-  }
-}
--- a/adm/qmake/OccModule.pro.in
+++ b/adm/qmake/OccModule.pro.in
@@ -1,2 +0,0 @@
-OCC_MODULE_NAME = \$\$TARGET
-include(../OccModule.pri)
--- a/adm/qmake/OccToolkit.pri
+++ b/adm/qmake/OccToolkit.pri
@@ -1,144 +0,0 @@
-# This is a project template file defining an OCCT Toolkit.
-# This project should be included with predefined OCC_TOOLKIT_NAME variable.
-
-TEMPLATE = lib
-!exists(../../src/$$OCC_TOOLKIT_NAME/PACKAGES) {
-  TEMPLATE = app
-  CONFIG += console
-}
-win32 {
-  # do not append version to DLL name
-  CONFIG += skip_target_version_ext
-}
-
-include(OccCppConfig.pri)
-
-aSrcRoot = $$OccGitRoot/src
-aHxxRoot = $$OccGitRoot/inc
-INCLUDEPATH += $$aHxxRoot
-
-# CSF variables
-CSF_FREETYPE  = -lfreetype
-CSF_TclLibs   = -ltcl8.6
-CSF_TclTkLibs = -ltk8.6
-HAVE_FREEIMAGE { CSF_FreeImagePlus = -lfreeimage } else:win32 { CSF_FreeImagePlus = -lwindowscodecs -lole32 }
-HAVE_FFMPEG    { CSF_FFmpeg = -lavcodec -lavformat -lswscale -lavutil }
-HAVE_TBB       { CSF_TBB = -ltbb -ltbbmalloc }
-HAVE_ZLIB      { CSF_ZLIB = -lzlib }
-HAVE_LIBLZMA   { CSF_LIBLZMA = -lliblzma }
-win32 {
-  CSF_kernel32   = -lkernel32
-  CSF_advapi32   = -ladvapi32
-  CSF_gdi32      = -lgdi32
-  CSF_user32     = -luser32 -lcomdlg32
-  CSF_shell32    = -lShell32
-  CSF_opengl32   = -lopengl32
-  CSF_wsock32    = -lwsock32
-  CSF_netapi32   = -lnetapi32
-  CSF_OpenGlLibs = -lopengl32
-  HAVE_GLES2 { CSF_OpenGlLibs = -llibEGL -llibGLESv2 }
-  CSF_psapi      = -lPsapi
-  CSF_winmm      = -lwinmm
-  CSF_d3d9       = -ld3d9
-  CSF_TclLibs    = -ltcl86
-  CSF_TclTkLibs  = -ltk86
-  CSF_TBB =
-} else:mac {
-  CSF_dl         = -ldl
-  CSF_objc       = -lobjc
-  iphoneos {
-    CSF_Appkit     = -framework UIKit
-    CSF_OpenGlLibs = -framework OpenGLES
-  } else {
-    CSF_Appkit     = -framework AppKit
-    CSF_OpenGlLibs = -framework OpenGL
-  }
-  CSF_IOKit      = -framework IOKit
-  CSF_TclLibs    = -framework Tcl
-  CSF_TclTkLibs  = -framework Tk
-} else {
-  CSF_dl = -ldl
-  CSF_ThreadLibs = -lpthread -lrt
-  CSF_OpenGlLibs = -lGL
-  CSF_TclTkLibs  = -lX11 -ltk8.6
-  CSF_XwLibs     = -lX11 -lXext -lXmu -lXi
-  CSF_MotifLibs  = -lX11
-  CSF_fontconfig = -lfontconfig
-  HAVE_GLES2 { CSF_OpenGlLibs = -lEGL -lGLESv2 }
-}
-
-for (aCfgIter, CONFIG) {
-  aRes = $$find(aCfgIter, "^HAVE_")
-  count(aRes, 1) {
-    DEFINES += $$aCfgIter
-  }
-}
-
-# Define the list of standard OCCT file extensions
-aHxxRegex = ^.*\.(hxx|h|lxx|gxx)$
-aPxxRegex = ^.*\.(pxx)$
-aCxxRegex = ^.*\.(cxx|c)$
-mac { aCxxRegex = ^.*\.(cxx|c|m|mm)$ }
-
-# Auxiliary function for probing file extension
-defineTest (occCheckExtension) {
-  aProbe = $$find(1, "$$2")
-  count(aProbe, 1) { return(true) } else { return(false) }
-}
-
-# Auxiliary function for probing compilable files
-defineTest (occIsCxxFile) { occCheckExtension ($$1, $$aCxxRegex) { return(true) } else { return(false) } }
-
-# Auxiliary function for probing header files
-defineTest (occIsHxxFile) { occCheckExtension ($$1, $$aHxxRegex) { return(true) } else { return(false) } }
-
-aTkFiles     = $$cat($$aSrcRoot/$$OCC_TOOLKIT_NAME/FILES,     lines)
-aTkFiles += CMakeLists.txt
-aPackages    = $$cat($$aSrcRoot/$$OCC_TOOLKIT_NAME/PACKAGES,  lines)
-anExternLibs = $$cat($$aSrcRoot/$$OCC_TOOLKIT_NAME/EXTERNLIB, lines)
-
-for (aTkFileIter, aTkFiles) { OTHER_FILES += $$aSrcRoot/$$OCC_TOOLKIT_NAME/$$aTkFileIter }
-for (anExternLib, anExternLibs) {
-  hasCsf = $$find(anExternLib, CSF_)
-  count(hasCsf, 1) {
-    aList = $$split($$anExternLib, "\n")
-    LIBS += $$aList
-  } else {
-    LIBS += -l$$anExternLib
-  }
-}
-
-# Iterate over Packages and add compilable files into this project
-isEmpty (aPackages) { aPackages = $$OCC_TOOLKIT_NAME }
-for (aPackage, aPackages) {
-  aPackageFolder = $$aSrcRoot/$$OCC_TOOLKIT_NAME/$$aPackage
-  aPackageFiles = $$cat($$aSrcRoot/$$aPackage/FILES, lines)
-  for (aFileIter, aPackageFiles) {
-    occIsCxxFile($$aFileIter) {
-      SOURCES += $$aSrcRoot/$$aPackage/$$aFileIter
-    }
-  }
-}
-
-# extend clean with versioned .so files
-!win32 {
-  aVerList = $$split(VERSION, ".")
-  aVerMaj = $$member(aVerList, 0)
-  aVerMin = $$member(aVerList, 1)
-  aVerMic = $$member(aVerList, 2)
-  equals(TEMPLATE, app) {
-    QMAKE_CLEAN += $$DESTDIR/$${TARGET}
-  } else {
-    mac {
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.dylib
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.$${aVerMaj}.dylib
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.$${aVerMaj}.$${aVerMin}.dylib
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.$${aVerMaj}.$${aVerMin}.$${aVerMic}.dylib
-    } else {
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.so
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.so.$${aVerMaj}
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.so.$${aVerMaj}.$${aVerMin}
-      QMAKE_CLEAN += $$DESTDIR/lib$${TARGET}.so.$${aVerMaj}.$${aVerMin}.$${aVerMic}
-    }
-  }
-}
--- a/adm/qmake/OccToolkit.pro.in
+++ b/adm/qmake/OccToolkit.pro.in
@@ -1,2 +0,0 @@
-OCC_TOOLKIT_NAME = \$\$TARGET
-include(../../OccToolkit.pri)
--- a/adm/qmake/Occt.pro
+++ b/adm/qmake/Occt.pro
@@ -1,41 +0,0 @@
-# This is an experimental Solution project for building entire OCCT framework using qmake.
-# It can be also used for just source code navigation in Qt Creator without actually building OCCT.
-# Note, as this is an experimental project, compiler flags might differ from official builds - use it on your own risk!
-# Building OCCT using CMake is a preferred solution.
-#
-# This project GENERATES sub-projects (OCCT modules) dynamically, so to start using it:
-# - Launch genconf, select Project Format "Qt Project" and configure dependencies; this will also generate "custom.auto.pri".
-# - Launch genproj to fill in "inc" folder with links to header files.
-# - Open project in Qt Creator, and call "Run qmake".
-# - Close the project in Qt Creator, open it again so that you should see the sub-modules in Project tree; call "Run qmake" again.
-# - "Run qmake" and perform Build.
-TEMPLATE = subdirs
-exists(custom.auto.pri) { include(custom.auto.pri) }
-exists(custom.pri)      { include(custom.pri) }
-
-OTHER_FILES += OccModule.pro.in \
-               OcctHeaderLink.hxx.in \
-               OccToolkit.pro.in \
-               OccCppConfig.pri \
-               OccModule.pri \
-               OccToolkit.pri \
-               custom.pri.template
-
-# Iterate over Modules and generate sub-projects
-aSolModuleList = $$cat(../MODULES, lines)
-for (aSolModuleIter, aSolModuleList) {
-  aSolModule = $$first($$list($$aSolModuleIter))
-  eval(occtkgen_$${aSolModule}.input  = $$_PRO_FILE_PWD_/OccModule.pro.in)
-  eval(occtkgen_$${aSolModule}.output = $$_PRO_FILE_PWD_/$${aSolModule}/$${aSolModule}.pro)
-  eval(occtkgen_$${aSolModule}.config = verbatim)
-  eval(QMAKE_SUBSTITUTES += occtkgen_$${aSolModule})
-  SUBDIRS += $${aSolModule}
-}
-
-# These dependencies are manually defined
-ModelingData.depends = FoundationClasses
-ModelingAlgorithms.depends = FoundationClasses ModelingData
-Visualization.depends = FoundationClasses ModelingData ModelingAlgorithms
-ApplicationFramework.depends = FoundationClasses ModelingData ModelingAlgorithms Visualization
-DataExchange.depends = FoundationClasses ModelingData ModelingAlgorithms ApplicationFramework
-Draw.depends = FoundationClasses ModelingData ModelingAlgorithms ApplicationFramework DataExchange Visualization
--- a/adm/qmake/OcctDummy.in
+++ b/adm/qmake/OcctDummy.in
--- a/adm/qmake/OcctHeaderLink.hxx.in
+++ b/adm/qmake/OcctHeaderLink.hxx.in
@@ -1 +0,0 @@
-#include \"../src/$${OCCT_PACKAGE}/$${OCCT_HEADER}\"
--- a/adm/qmake/custom.pri.template
+++ b/adm/qmake/custom.pri.template
@@ -1,17 +0,0 @@
-PRODUCTS_PATH = c:/3rdparty/vc14
-
-#CONFIG += HAVE_FREEIMAGE
-#CONFIG += HAVE_FFMPEG
-#CONFIG += HAVE_TBB
-#CONFIG += HAVE_GLES2
-#CONFIG += HAVE_D3D
-#CONFIG += HAVE_VTK
-
-aFreeType = $$PRODUCTS_PATH/freetype-2.5.5-vc14-64
-aTclTk    = $$PRODUCTS_PATH/tcltk-86-64
-
-INCLUDEPATH += $$aFreeType/include
-LIBS        += -L$$aFreeType/lib
-
-INCLUDEPATH += $$aTclTk/include
-LIBS        += -L$$aTclTk/lib
--- a/adm/scripts/.gitignore
+++ b/adm/scripts/.gitignore
@@ -1,2 +0,0 @@
-*custom.bat
-*custom.sh
--- a/adm/scripts/android_build.bat
+++ b/adm/scripts/android_build.bat
@@ -1,234 +0,0 @@
-@echo OFF
-
-rem Auxiliary script for semi-automated building of OCCT for Android platform.
-rem android_custom.bat should be configured with paths
-rem to CMake, 3rd-parties, Android NDK and MinGW make tool.
-
-set "aCasSrc=%~dp0..\.."
-set "aBuildRoot=%aCasSrc%\work"
-
-set aNbJobs=%NUMBER_OF_PROCESSORS%
-
-rem Paths to 3rd-party tools and libraries
-set "anNdkPath="
-set "aFreeType="
-set "aRapidJson="
-
-rem Build stages to perform
-set "toCMake=1"
-set "toClean=0"
-set "toMake=1"
-set "toInstall=1"
-set "toPack=1"
-set "isStatic=0"
-
-rem Minimal Android platform and CPU architectures
-set "anNdkApiLevel=21"
-set "anNdkAbiList=armeabi-v7a x86 arm64-v8a x86_64"
-
-rem OCCT Modules to build
-set "BUILD_ModelingData=ON"
-set "BUILD_ModelingAlgorithms=ON"
-set "BUILD_Visualization=ON"
-set "BUILD_ApplicationFramework=ON"
-set "BUILD_DataExchange=ON"
-
-rem Optional 3rd-party libraries to enable
-set USE_RAPIDJSON=OFF
-
-rem Archive tool
-set "THE_7Z_PARAMS=-t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on"
-set "THE_7Z_PATH=%ProgramW6432%\7-Zip\7z.exe"
-
-rem Configuration file
-if exist "%~dp0android_custom.bat" call "%~dp0android_custom.bat"
-
-set "aCompiler=gcc"
-set "aCppLib=gnustl_shared"
-if not exist "%anNdkPath%/sources/cxx-stl/gnu-libstdc++" (
-  if exist "%anNdkPath%/sources/cxx-stl/llvm-libc++" (
-    set "aCompiler=clang"
-    set "aCppLib=c++_shared"
-  )
-)
-set "aLibType=Shared"
-if ["%isStatic%"] == ["1"] set "aLibType=Static"
-set "aDestDir=%aBuildRoot%\android-%aCompiler%"
-
-set "anOcctVerSuffix="
-set "anOcctVersion=0.0.0"
-set "aGitBranch="
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_DEVELOPMENT" "%aCasSrc%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVerSuffix=%%i" )
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_COMPLETE" "%aCasSrc%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVersion=%%i" )
-for /f %%i in ('git symbolic-ref --short HEAD') do ( set "aGitBranch=%%i" )
-
-for %%s in (%anNdkAbiList%) do (
-  call :cmakeGenerate "%anNdkApiLevel%" "%%s"
-)
-
-for /F "skip=1 delims=" %%F in ('
-  wmic PATH Win32_LocalTime GET Day^,Month^,Year /FORMAT:TABLE
-') do (
-  for /F "tokens=1-3" %%L in ("%%F") do (
-    set DAY00=0%%L
-    set MONTH00=0%%M
-    set YEAR=%%N
-  )
-)
-set DAY00=%DAY00:~-2%
-set MONTH00=%MONTH00:~-2%
-set "aRevision=-%YEAR%-%MONTH00%-%DAY00%"
-rem set "aRevision=-%aGitBranch%"
-set "anArchName=occt-%anOcctVersion%%anOcctVerSuffix%%aRevision%-android"
-set "aTarget=%aBuildRoot%\%anArchName%"
-if ["%toPack%"] == ["1"] (
-  echo Creating archive %anArchName%.7z
-  rmdir /S /Q "%aTarget%"
-  if not exist "%aTarget%" ( mkdir "%aTarget%" )
-  if exist "%aBuildRoot%/%anArchName%.7z" del "%aBuildRoot%/%anArchName%.7z"
-  xcopy /S /Y "%aDestDir%\*" "%aTarget%\"
-
-  "%THE_7Z_PATH%" a -r %THE_7Z_PARAMS% "%aBuildRoot%/%anArchName%.7z" "%aTarget%"
-)
-if not ["%1"] == ["-nopause"] (
-  pause
-)
-
-goto :eof
-
-:cmakeGenerate
-set "anApi=%~1"
-set "anAbi=%~2"
-set "aPlatformAndCompiler=android-%anAbi%-%aCompiler%"
-set "aWorkDir=%aBuildRoot%\%aPlatformAndCompiler%-make"
-set "aLogFile=%aBuildRoot%\build-%aPlatformAndCompiler%.log"
-if not exist "%aWorkDir%" ( mkdir "%aWorkDir%" )
-if     exist "%aLogFile%" ( del   "%aLogFile%" )
-
-rem include some information about OCCT into archive
-echo ^<pre^>> "%aWorkDir%\VERSION.html"
-git status >> "%aWorkDir%\VERSION.html"
-git log -n 100 >> "%aWorkDir%\VERSION.html"
-echo ^</pre^>>> "%aWorkDir%\VERSION.html"
-
-echo Start building OCCT for %aPlatformAndCompiler%
-echo Start building OCCT for %aPlatformAndCompiler%>> %aLogFile%
-
-pushd "%aWorkDir%"
-
-set "aTimeZERO=%TIME%"
-if ["%toCMake%"] == ["1"] (
-  echo Configuring OCCT for Android %anAbi%, API level %anApi%...
-  cmake -G "MinGW Makefiles" ^
- -D CMAKE_SYSTEM_NAME:STRING="Android" ^
- -D CMAKE_ANDROID_NDK="%anNdkPath%" ^
- -D CMAKE_BUILD_TYPE:STRING="Release" ^
- -D CMAKE_ANDROID_ARCH_ABI:STRING="%anAbi%" ^
- -D CMAKE_SYSTEM_VERSION:STRING="%anApi%" ^
- -D CMAKE_ANDROID_STL_TYPE="%aCppLib%" ^
- -D BUILD_LIBRARY_TYPE:STRING="%aLibType%" ^
- -D INSTALL_DIR:PATH="%aDestDir%" ^
- -D INSTALL_DIR_INCLUDE:STRING="inc" ^
- -D INSTALL_DIR_LIB:STRING="libs/%anAbi%" ^
- -D INSTALL_DIR_CMAKE:STRING="libs/%anAbi%/cmake/opencascade" ^
- -D INSTALL_DIR_RESOURCE:STRING="src" ^
- -D BUILD_MODULE_FoundationClasses:BOOL="ON" ^
- -D BUILD_MODULE_ModelingData:BOOL="%BUILD_ModelingData%" ^
- -D BUILD_MODULE_ModelingAlgorithms:BOOL="%BUILD_ModelingAlgorithms%" ^
- -D BUILD_MODULE_Visualization:BOOL="%BUILD_Visualization%" ^
- -D BUILD_MODULE_ApplicationFramework:BOOL="%BUILD_ApplicationFramework%" ^
- -D BUILD_MODULE_DataExchange:BOOL="%BUILD_DataExchange%" ^
- -D BUILD_MODULE_Draw:BOOL="OFF" ^
- -D BUILD_DOC_Overview:BOOL="OFF" ^
- -D 3RDPARTY_FREETYPE_DIR:PATH="%aFreeType%" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_LIBRARY_DIR:PATH="%aFreeType%/libs/%anAbi%" ^
- -D 3RDPARTY_FREETYPE_LIBRARY:FILEPATH="%aFreeType%/libs/%anAbi%/libfreetype.so" ^
- -D USE_RAPIDJSON:BOOL="%USE_RAPIDJSON%" ^
- -D 3RDPARTY_RAPIDJSON_DIR:PATH="%aRapidJson%" ^
- -D 3RDPARTY_RAPIDJSON_INCLUDE_DIR:PATH="%aRapidJson%/include" ^
- "%aCasSrc%"
-
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-)
-set aTimeGEN=%TIME%
-call :computeDuration %aTimeZERO% %aTimeGEN%
-if ["%toCMake%"] == ["1"] (
-  echo Generation time: %DURATION%
-  echo Generation time: %DURATION%>> "%aLogFile%"
-)
-
-if ["%toClean%"] == ["1"] (
-  mingw32-make clean
-)
-
-if ["%toMake%"] == ["1"] (
-  echo Building...
-  mingw32-make -j %aNbJobs% 2>> "%aLogFile%"
-  if errorlevel 1 (
-    type "%aLogFile%"
-    popd
-    exit /B 1
-    goto :eof
-  )
-  type "%aLogFile%"
-)
-set aTimeBUILD=%TIME%
-call :computeDuration %aTimeGEN% %aTimeBUILD%
-if ["%toMake%"] == ["1"] (
-  echo Building time: %DURATION%
-  echo Building time: %DURATION%>> "%aLogFile%"
-)
-call :computeDuration %aTimeZERO% %aTimeBUILD%
-if ["%toMake%"] == ["1"] (
-  echo Total building time: %DURATION%
-  echo Total building time: %DURATION%>> "%aLogFile%"
-)
-
-if ["%toInstall%"] == ["1"] (
-  echo Installing into %aDestDir%...
-  mingw32-make install 2>> "%aLogFile%"
-  copy /Y "%aWorkDir%\VERSION.html" "%aDestDir%\VERSION.html"
-)
-set "aTimeINSTALL=%TIME%"
-call :computeDuration "%aTimeBUILD%" "%aTimeINSTALL%"
-if ["%toInstall%"] == ["1"] (
-  echo Install time: %DURATION%
-  echo Install time: %DURATION%>> "%aLogFile%"
-)
-
-call :computeDuration "%aTimeZERO%" "%aTimeINSTALL%"
-echo Total time: %DURATION%
-echo Total time: %DURATION%>> "%aLogFile%"
-
-popd
-goto :eof
-
-:computeDuration
-set "aTimeFrom=%~1"
-set "aTimeEnd=%~2"
-rem handle time before 10AM (win10 - remove empty space at the beginning)
-if "%aTimeFrom:~0,1%"==" " set "aTimeFrom=%aTimeFrom:~1%"
-if  "%aTimeEnd:~0,1%"==" " set  "aTimeEnd=%aTimeEnd:~1%"
-rem handle time before 10AM (win7 - add 0 at the beginning)
-if "%aTimeFrom:~1,1%"==":" set "aTimeFrom=0%aTimeFrom%"
-if  "%aTimeEnd:~1,1%"==":" set  "aTimeEnd=0%aTimeEnd%"
-rem convert hours:minutes:seconds:ms into duration
-set /A aTimeFrom=(1%aTimeFrom:~0,2%-100)*360000 + (1%aTimeFrom:~3,2%-100)*6000 + (1%aTimeFrom:~6,2%-100)*100 + (1%aTimeFrom:~9,2%-100)
-set /A  aTimeEnd= (1%aTimeEnd:~0,2%-100)*360000 +  (1%aTimeEnd:~3,2%-100)*6000 +  (1%aTimeEnd:~6,2%-100)*100 +  (1%aTimeEnd:~9,2%-100)
-set /A aDurTotalSec=%aTimeEnd%-%aTimeFrom%
-if %aTimeEnd% LSS %aTimeFrom% set set /A aDurTotalSec=%aTimeFrom%-%aTimeEnd%
-set /A aDurHH=%aDurTotalSec% / 360000
-set /A aDurMM=(%aDurTotalSec% - %aDurHH%*360000) / 6000
-set /A aDurSS=(%aDurTotalSec% - %aDurHH%*360000 - %aDurMM%*6000) / 100
-if %aDurHH% LSS 10 set aDurHH=0%aDurHH%
-if %aDurMM% LSS 10 set aDurMM=0%aDurMM%
-if %aDurSS% LSS 10 set aDurSS=0%aDurSS%
-
-set "DURATION=%aDurHH%:%aDurMM%:%aDurSS%"
-goto :eof
--- a/adm/scripts/android_custom.bat.template
+++ b/adm/scripts/android_custom.bat.template
@@ -1,31 +0,0 @@
-rem Environment configuration template for android_build.bat (to be renamed as android_custom.bat)
-
-rem Paths to 3rd-party tools and libraries
-rem call c:\TDM-GCC-64\mingwvars.bat
-rem set "PATH=c:\CMake\bin;%PATH%"
-rem set "anNdkPath=c:/android-ndk-r12"
-rem set "aFreeType=c:/freetype-2.7.1-android"
-rem set "aRapidJson=c:/rapidjson-1.1.0"
-
-rem Uncomment to customize building steps
-rem set "aBuildRoot=%~dp0..\..\work"
-rem set "toCMake=1"
-rem set "toClean=0"
-rem set "toMake=1"
-rem set "toInstall=1"
-rem set "toPack=1"
-rem set "isStatic=0"
-
-rem Minimal Android platform and CPU architectures
-rem set "anNdkApiLevel=21"
-rem set "anNdkAbiList=arm64-v8a x86_64"
-
-rem OCCT Modules to build
-rem set "BUILD_ModelingData=ON"
-rem set "BUILD_ModelingAlgorithms=ON"
-rem set "BUILD_Visualization=ON"
-rem set "BUILD_ApplicationFramework=ON"
-rem set "BUILD_DataExchange=ON"
-
-rem Optional 3rd-party libraries to enable
-rem set USE_RAPIDJSON=ON
--- a/adm/scripts/cmake_custom.bat.template
+++ b/adm/scripts/cmake_custom.bat.template
@@ -1,46 +0,0 @@
-rem Environment configuration template for cmake_gen.bat (to be renamed as cmake_gen_custom.bat)
-
-set "OCCT3RDPARTY=%SrcRoot%\..\3rdparty"
-
-set VS=14
-set VSDATA=2015
-
-rem Leave VSPLATFORM empty to build for x86 platform
-set VSPLATFORM=Win64
-
-rem ------------------------------------
-rem Uncomment to customize building steps
-rem ------------------------------------
-
-rem set "BUILD_DIR=build-vs%VS%-%VSPLATFORM%"
-rem set "INSTALL_DIR=%SrcRoot%\install"
-
-rem set BUILD_DOC_Overview=OFF
-rem set BUILD_Inspector=OFF
-rem set BUILD_LIBRARY_TYPE=Shared
-rem set BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-rem set BUILD_WITH_DEBUG=OFF
-rem set BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-rem set BUILD_USE_PCH=OFF
-
-rem Use semicolon-separated list of toolkits if you want to disable all modules
-rem  and build only some toolkits.
-rem set BUILD_ADDITIONAL_TOOLKITS=
-
-rem Set a directory recognized as a patch for OCCT.
-rem set BUILD_PATCH=
-
-rem set BUILD_MODULE_ApplicationFramework=ON
-rem set BUILD_MODULE_DataExchange=ON
-rem set BUILD_MODULE_Draw=ON
-rem set BUILD_MODULE_ModelingAlgorithms=ON
-rem set BUILD_MODULE_ModelingData=ON
-rem set BUILD_MODULE_Visualization=ON
-
-rem set USE_D3D=OFF
-rem set USE_FFMPEG=OFF
-rem set USE_FREEIMAGE=OFF
-rem set USE_GLES2=OFF
-rem set USE_RAPIDJSON=OFF
-rem set USE_TBB=OFF
-rem set USE_VTK=OFF
--- a/adm/scripts/cmake_custom.sh.template
+++ b/adm/scripts/cmake_custom.sh.template
@@ -1,42 +0,0 @@
-# Environment configuration template for cmake_gen.sh (to be renamed as cmake_gen_custom.sh)
-
-OCCT3RDPARTY="$SrcRoot/../3rdparty"
-FREETYPE_DIR="$OCCT3RDPARTY/freetype-2.7.1"
-
-# ------------------------------------
-# Uncomment to customize building steps
-# ------------------------------------
-
-#BUILD_DIR=build
-#INSTALL_DIR="$SrcRoot/install"
-
-#BUILD_DOC_Overview=OFF
-#BUILD_Inspector=OFF
-#BUILD_LIBRARY_TYPE=Shared
-#BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-#BUILD_WITH_DEBUG=OFF
-#BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-
-# Use semicolon-separated list of toolkits if you want to disable all modules
-#  and build only some toolkits.
-#BUILD_ADDITIONAL_TOOLKITS=
-
-# Set a directory recognized as a patch for OCCT.
-#BUILD_PATCH=
-
-#BUILD_MODULE_ApplicationFramework=ON
-#BUILD_MODULE_DataExchange=ON
-#BUILD_MODULE_Draw=ON
-#BUILD_MODULE_ModelingAlgorithms=ON
-#BUILD_MODULE_ModelingData=ON
-#BUILD_MODULE_Visualization=ON
-
-#USE_FFMPEG=OFF
-#USE_FREEIMAGE=OFF
-#USE_GLES2=OFF
-#USE_RAPIDJSON=OFF
-#USE_TBB=OFF
-#USE_VTK=OFF
-
-# This is to add any additional arguments to cmake
-#AUX_ARGS=
--- a/adm/scripts/cmake_gen.bat
+++ b/adm/scripts/cmake_gen.bat
@@ -1,83 +0,0 @@
-@echo off
-
-rem Auxiliary script for semi-automated building of OCCT using cmake.
-rem cmake_custom.bat should be configured with VS version and path to 3rd-parties.
-rem OCCT3RDPARTY must be specified as mandatory dependency.
-
-setlocal
-
-set "SrcRoot=%~dp0..\.."
-
-set VS=14
-set VSDATA=2015
-set VSPLATFORM=Win64
-set "BUILD_DIR=build-vs%VS%-%VSPLATFORM%"
-set "INSTALL_DIR=%SrcRoot%\install"
-
-set BUILD_ADDITIONAL_TOOLKITS=
-set BUILD_DOC_Overview=OFF
-set BUILD_Inspector=OFF
-set BUILD_LIBRARY_TYPE=Shared
-set BUILD_PATCH=
-set BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-set BUILD_WITH_DEBUG=OFF
-set BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-set BUILD_USE_PCH=OFF
-
-set BUILD_MODULE_ApplicationFramework=ON
-set BUILD_MODULE_DataExchange=ON
-set BUILD_MODULE_Draw=ON
-set BUILD_MODULE_ModelingAlgorithms=ON
-set BUILD_MODULE_ModelingData=ON
-set BUILD_MODULE_Visualization=ON
-
-set USE_D3D=OFF
-set USE_FFMPEG=OFF
-set USE_FREEIMAGE=OFF
-set USE_GLES2=OFF
-set USE_RAPIDJSON=OFF
-set USE_TBB=OFF
-set USE_VTK=OFF
-
-if exist "%~dp0cmake_custom.bat" call "%~dp0cmake_custom.bat"
-
-if not "%VSPLATFORM%"=="" set "arch_compile=Visual Studio %VS% %VSDATA% %VSPLATFORM%"
-if     "%VSPLATFORM%"=="" set "arch_compile=Visual Studio %VS% %VSDATA%"
-
-set "INSTALL_DIR=%INSTALL_DIR:\=/%"
-set "OCCT3RDPARTY=%OCCT3RDPARTY:\=/%"
-
-set "BUILD_DIR=%SrcRoot%\%BUILD_DIR%"
-if not exist "%BUILD_DIR%" mkdir "%BUILD_DIR%"
-pushd "%BUILD_DIR%"
- 
-cmake -G "%arch_compile%" ^
-  -D 3RDPARTY_DIR:STRING="%OCCT3RDPARTY%" ^
-  -D BUILD_ADDITIONAL_TOOLKITS:STRING="%BUILD_ADDITIONAL_TOOLKITS%" ^
-  -D BUILD_DOC_Overview:BOOL=%BUILD_DOC_Overview% ^
-  -D BUILD_Inspector:BOOL=%BUILD_Inspector% ^
-  -D BUILD_LIBRARY_TYPE:STRING=%BUILD_LIBRARY_TYPE% ^
-  -D BUILD_MODULE_ApplicationFramework:BOOL=%BUILD_MODULE_ApplicationFramework% ^
-  -D BUILD_MODULE_DataExchange:BOOL=%BUILD_MODULE_DataExchange% ^
-  -D BUILD_MODULE_Draw:BOOL=%BUILD_MODULE_Draw% ^
-  -D BUILD_MODULE_FoundationClasses:BOOL=ON ^
-  -D BUILD_MODULE_ModelingAlgorithms:BOOL=%BUILD_MODULE_ModelingAlgorithms% ^
-  -D BUILD_MODULE_ModelingData:BOOL=%BUILD_MODULE_ModelingData% ^
-  -D BUILD_MODULE_Visualization:BOOL=%BUILD_MODULE_Visualization% ^
-  -D BUILD_PATCH:PATH="%BUILD_PATCH%" ^
-  -D BUILD_RELEASE_DISABLE_EXCEPTIONS:BOOL=%BUILD_RELEASE_DISABLE_EXCEPTIONS% ^
-  -D BUILD_WITH_DEBUG:BOOL=%BUILD_WITH_DEBUG% ^
-  -D BUILD_ENABLE_FPE_SIGNAL_HANDLER:BOOL=%BUILD_ENABLE_FPE_SIGNAL_HANDLER% ^
-  -D BUILD_USE_PCH:BOOL=%BUILD_USE_PCH% ^
-  -D INSTALL_DIR:PATH="%INSTALL_DIR%" ^
-  -D USE_D3D:BOOL=%USE_D3D% ^
-  -D USE_FFMPEG:BOOL=%USE_FFMPEG% ^
-  -D USE_FREEIMAGE:BOOL=%USE_FREEIMAGE% ^
-  -D USE_GLES2:BOOL=%USE_GLES2% ^
-  -D USE_RAPIDJSON:BOOL=%USE_RAPIDJSON% ^
-  -D USE_TBB:BOOL=%USE_TBB% ^
-  -D USE_VTK:BOOL=%USE_VTK% ^
-  "%SrcRoot%"
-
-popd
-endlocal
--- a/adm/scripts/cmake_gen.sh
+++ b/adm/scripts/cmake_gen.sh
@@ -1,86 +0,0 @@
-#!/bin/bash
-
-# Auxiliary script for semi-automated building of OCCT using cmake.
-# cmake_custom.sh should be configured with path to 3rd-parties.
-# OCCT3RDPARTY and FREETYPE_DIR must be specified as mandatory dependencies.
-
-ScriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-SrcRoot="${ScriptDir}/../.."
-
-INSTALL_DIR="$SrcRoot/install"
-
-BUILD_DIR=build
-DEB=
-CMAKE_BUILD_TYPE=Release
-if [ "$1" = "-d" ]; then
-  DEB=d
-  BUILD_DIR=${BUILD_DIR}-deb
-  CMAKE_BUILD_TYPE=Debug
-fi
-INSTALL_DIR_BIN=lin64/gcc/bin$DEB
-INSTALL_DIR_LIB=lin64/gcc/lib$DEB
-
-BUILD_ADDITIONAL_TOOLKITS=
-BUILD_DOC_Overview=OFF
-BUILD_Inspector=OFF
-BUILD_LIBRARY_TYPE=Shared
-BUILD_PATCH=
-BUILD_RELEASE_DISABLE_EXCEPTIONS=ON
-BUILD_WITH_DEBUG=OFF
-BUILD_ENABLE_FPE_SIGNAL_HANDLER=ON
-
-BUILD_MODULE_ApplicationFramework=ON
-BUILD_MODULE_DataExchange=ON
-BUILD_MODULE_Draw=ON
-BUILD_MODULE_ModelingAlgorithms=ON
-BUILD_MODULE_ModelingData=ON
-BUILD_MODULE_Visualization=ON
-
-USE_FFMPEG=OFF
-USE_FREEIMAGE=OFF
-USE_GLES2=OFF
-USE_RAPIDJSON=OFF
-USE_TBB=OFF
-USE_VTK=OFF
-AUX_ARGS=
-
-if [ -f "${ScriptDir}/cmake_custom.sh" ]; then
-  . "${ScriptDir}/cmake_custom.sh"
-fi
-
-BUILD_DIR="$SrcRoot/$BUILD_DIR"
-if [ ! -d "$BUILD_DIR" ]; then mkdir -p "$BUILD_DIR"; fi
-pushd "$BUILD_DIR"
- 
-cmake -G "Unix Makefiles" \
-  -D CMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE \
-  -D 3RDPARTY_DIR:PATH="$OCCT3RDPARTY" \
-  -D 3RDPARTY_FREETYPE_DIR:PATH="$FREETYPE_DIR" \
-  -D BUILD_ADDITIONAL_TOOLKITS:STRING="$BUILD_ADDITIONAL_TOOLKITS" \
-  -D BUILD_DOC_Overview:BOOL=$BUILD_DOC_Overview \
-  -D BUILD_Inspector:BOOL=$BUILD_Inspector \
-  -D BUILD_LIBRARY_TYPE:STRING=$BUILD_LIBRARY_TYPE \
-  -D BUILD_MODULE_ApplicationFramework:BOOL=$BUILD_MODULE_ApplicationFramework \
-  -D BUILD_MODULE_DataExchange:BOOL=$BUILD_MODULE_DataExchange \
-  -D BUILD_MODULE_Draw:BOOL=$BUILD_MODULE_Draw \
-  -D BUILD_MODULE_FoundationClasses:BOOL=ON \
-  -D BUILD_MODULE_ModelingAlgorithms:BOOL=$BUILD_MODULE_ModelingAlgorithms \
-  -D BUILD_MODULE_ModelingData:BOOL=$BUILD_MODULE_ModelingData \
-  -D BUILD_MODULE_Visualization:BOOL=$BUILD_MODULE_Visualization \
-  -D BUILD_PATCH:PATH="$BUILD_PATCH" \
-  -D BUILD_RELEASE_DISABLE_EXCEPTIONS:BOOL=$BUILD_RELEASE_DISABLE_EXCEPTIONS \
-  -D BUILD_WITH_DEBUG:BOOL=$BUILD_WITH_DEBUG \
-  -D BUILD_ENABLE_FPE_SIGNAL_HANDLER:BOOL=$BUILD_ENABLE_FPE_SIGNAL_HANDLER \
-  -D INSTALL_DIR:PATH="$INSTALL_DIR" \
-  -D INSTALL_DIR_LAYOUT:STRING=Windows \
-  -D INSTALL_DIR_BIN:STRING=$INSTALL_DIR_BIN \
-  -D INSTALL_DIR_LIB:STRING=$INSTALL_DIR_LIB \
-  -D USE_FFMPEG:BOOL=$USE_FFMPEG \
-  -D USE_FREEIMAGE:BOOL=$USE_FREEIMAGE \
-  -D USE_GLES2:BOOL=$USE_GLES2 \
-  -D USE_RAPIDJSON:BOOL=$USE_RAPIDJSON \
-  -D USE_TBB:BOOL=$USE_TBB \
-  -D USE_VTK:BOOL=$USE_VTK \
-  $AUX_ARGS "$SrcRoot"
-
-popd
--- a/adm/scripts/wasm_build.bat
+++ b/adm/scripts/wasm_build.bat
@@ -1,165 +0,0 @@
-@echo OFF
-
-rem Auxiliary script for semi-automated building of OCCT for WASM platform.
-rem wasm_custom.bat should be configured with paths to CMake, 3rd-parties and Emscripten SDK.
-rem FreeType should be specified as mandatory dependency.
-
-set "aSrcRoot=%~dp0..\.."
-set "aBuildRoot=work"
-
-set aNbJobs=%NUMBER_OF_PROCESSORS%
-
-set "toCMake=1"
-set "toClean=0"
-set "toMake=1"
-set "toInstall=1"
-
-set "BUILD_ModelingData=ON"
-set "BUILD_ModelingAlgorithms=ON"
-set "BUILD_Visualization=ON"
-set "BUILD_ApplicationFramework=ON"
-set "BUILD_DataExchange=ON"
-
-rem Configuration file
-if exist "%~dp0wasm_custom.bat" call "%~dp0wasm_custom.bat"
-
-call "%EMSDK_ROOT%\emsdk_env.bat"
-set "aToolchain=%EMSDK%/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
-
-set "anOcctVerSuffix="
-set "anOcctVersion=0.0.0"
-set "aGitBranch="
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_DEVELOPMENT" "%aSrcRoot%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVerSuffix=%%i" )
-for /f tokens^=2^ delims^=^" %%i in ('findstr /b /c:"#define OCC_VERSION_COMPLETE" "%aSrcRoot%\src\Standard\Standard_Version.hxx"') do ( set "anOcctVersion=%%i" )
-for /f %%i in ('git symbolic-ref --short HEAD') do ( set "aGitBranch=%%i" )
-
-call :cmakeGenerate
-if not ["%1"] == ["-nopause"] (
-  pause
-)
-
-goto :eof
-
-:cmakeGenerate
-set "aPlatformAndCompiler=wasm"
-set "aWorkDir=%aSrcRoot%\%aBuildRoot%\%aPlatformAndCompiler%-make"
-set "aDestDir=%aSrcRoot%\%aBuildRoot%\%aPlatformAndCompiler%"
-set "aLogFile=%aSrcRoot%\%aBuildRoot%\build-%aPlatformAndCompiler%.log"
-if not exist "%aWorkDir%" ( mkdir "%aWorkDir%" )
-if     exist "%aLogFile%" ( del   "%aLogFile%" )
-
-rem include some information about OCCT into archive
-echo ^<pre^>> "%aWorkDir%\VERSION.html"
-git status >> "%aWorkDir%\VERSION.html"
-git log -n 100 >> "%aWorkDir%\VERSION.html"
-echo ^</pre^>>> "%aWorkDir%\VERSION.html"
-
-echo Start building OCCT for %aPlatformAndCompiler%
-echo Start building OCCT for %aPlatformAndCompiler%>> %aLogFile%
-
-pushd "%aWorkDir%"
-
-set aTimeZERO=%TIME%
-if ["%toCMake%"] == ["1"] (
-  echo "Configuring OCCT for WASM..."
-  cmake -G "MinGW Makefiles" ^
- -D CMAKE_TOOLCHAIN_FILE:FILEPATH="%aToolchain%" ^
- -D CMAKE_BUILD_TYPE:STRING="Release" ^
- -D BUILD_LIBRARY_TYPE:STRING="Static" ^
- -D INSTALL_DIR:PATH="%aDestDir%" ^
- -D INSTALL_DIR_INCLUDE:STRING="inc" ^
- -D INSTALL_DIR_RESOURCE:STRING="src" ^
- -D 3RDPARTY_FREETYPE_DIR:PATH="%aFreeType%" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="%aFreeType%/include" ^
- -D 3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="%aFreeType%/include" ^
- -D BUILD_MODULE_FoundationClasses:BOOL="ON" ^
- -D BUILD_MODULE_ModelingData:BOOL="%BUILD_ModelingData%" ^
- -D BUILD_MODULE_ModelingAlgorithms:BOOL="%BUILD_ModelingAlgorithms%" ^
- -D BUILD_MODULE_Visualization:BOOL="%BUILD_Visualization%" ^
- -D BUILD_MODULE_ApplicationFramework:BOOL="%BUILD_ApplicationFramework%" ^
- -D BUILD_MODULE_DataExchange:BOOL="%BUILD_DataExchange%" ^
- -D BUILD_MODULE_Draw:BOOL="OFF" ^
- -D BUILD_DOC_Overview:BOOL="OFF" ^
- "%aSrcRoot%"
-
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-)
-set aTimeGEN=%TIME%
-call :computeDuration %aTimeZERO% %aTimeGEN%
-if ["%toCMake%"] == ["1"] (
-  echo Generation time: %DURATION%
-  echo Generation time: %DURATION%>> "%aLogFile%"
-)
-
-if "%toClean%"=="1" (
-  mingw32-make clean
-)
-
-if "%toMake%"=="1" (
-  echo Building...
-  mingw32-make -j %aNbJobs% 2>> "%aLogFile%"
-  if errorlevel 1 (
-    popd
-    exit /B 1
-    goto :eof
-  )
-  type "%aLogFile%"
-)
-set aTimeBUILD=%TIME%
-call :computeDuration %aTimeGEN% %aTimeBUILD%
-if "%toMake%"=="1" (
-  echo Building time: %DURATION%
-  echo Building time: %DURATION%>> "%aLogFile%"
-)
-call :computeDuration %aTimeZERO% %aTimeBUILD%
-if "%toMake%"=="1" (
-  echo Total building time: %DURATION%
-  echo Total building time: %DURATION%>> "%aLogFile%"
-)
-
-if "%toInstall%"=="1" (
-  echo Installing into %aDestDir%...
-  mingw32-make install 2>> "%aLogFile%"
-  copy /Y "%aWorkDir%\VERSION.html" "%aDestDir%\VERSION.html"
-)
-set aTimeINSTALL=%TIME%
-call :computeDuration %aTimeBUILD% %aTimeINSTALL%
-if "%toInstall%"=="1" (
-  echo Install time: %DURATION%
-  echo Install time: %DURATION%>> "%aLogFile%"
-)
-
-call :computeDuration %aTimeZERO% %aTimeINSTALL%
-echo Total time: %DURATION%
-echo Total time: %DURATION%>> "%aLogFile%"
-
-popd
-goto :eof
-
-:computeDuration
-set aTimeFrom=%1
-set aTimeEnd=%2
-rem handle time before 10AM (win10 - remove empty space at the beginning)
-if "%aTimeFrom:~0,1%"==" " set "aTimeFrom=%aTimeFrom:~1%"
-if  "%aTimeEnd:~0,1%"==" " set  "aTimeEnd=%aTimeEnd:~1%"
-rem handle time before 10AM (win7 - add 0 at the beginning)
-if "%aTimeFrom:~1,1%"==":" set "aTimeFrom=0%aTimeFrom%"
-if  "%aTimeEnd:~1,1%"==":" set  "aTimeEnd=0%aTimeEnd%"
-rem convert hours:minutes:seconds:ms into duration
-set /A aTimeFrom=(1%aTimeFrom:~0,2%-100)*360000 + (1%aTimeFrom:~3,2%-100)*6000 + (1%aTimeFrom:~6,2%-100)*100 + (1%aTimeFrom:~9,2%-100)
-set /A  aTimeEnd= (1%aTimeEnd:~0,2%-100)*360000 +  (1%aTimeEnd:~3,2%-100)*6000 +  (1%aTimeEnd:~6,2%-100)*100 +  (1%aTimeEnd:~9,2%-100)
-set /A aDurTotalSec=%aTimeEnd%-%aTimeFrom%
-if %aTimeEnd% LSS %aTimeFrom% set set /A aDurTotalSec=%aTimeFrom%-%aTimeEnd%
-set /A aDurHH=%aDurTotalSec% / 360000
-set /A aDurMM=(%aDurTotalSec% - %aDurHH%*360000) / 6000
-set /A aDurSS=(%aDurTotalSec% - %aDurHH%*360000 - %aDurMM%*6000) / 100
-if %aDurHH% LSS 10 set aDurHH=0%aDurHH%
-if %aDurMM% LSS 10 set aDurMM=0%aDurMM%
-if %aDurSS% LSS 10 set aDurSS=0%aDurSS%
-
-set "DURATION=%aDurHH%:%aDurMM%:%aDurSS%"
-goto :eof
--- a/adm/scripts/wasm_build.sh
+++ b/adm/scripts/wasm_build.sh
@@ -1,126 +0,0 @@
-#!/bin/bash
-
-# Auxiliary script for semi-automated building of OCCT for WASM platform.
-# wasm_custom.sh should be configured with paths to CMake, 3rd-parties and Emscripten SDK.
-# FreeType should be specified as mandatory dependency.
-
-export aScriptDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-export aSrcRoot="${aScriptDir}/../.."
-export aBuildRoot=work
-
-export aNbJobs=${NUMBER_OF_PROCESSORS}
-
-export toCMake=1
-export toClean=0
-export toMake=1
-export toInstall=1
-
-export BUILD_ModelingData=ON
-export BUILD_ModelingAlgorithms=ON
-export BUILD_Visualization=ON
-export BUILD_ApplicationFramework=ON
-export BUILD_DataExchange=ON
-
-if [ -f "${aScriptDir}/wasm_custom.sh" ] ; then
-  . "${aScriptDir}/wasm_custom.sh"
-fi
-
-. "${EMSDK_ROOT}/emsdk_env.sh"
-
-export aToolchain="${EMSDK}/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
-
-export aGitBranch=`git symbolic-ref --short HEAD`
-
-echo "Compilation OCCT branch : $aGitBranch"
-
-export aPlatformAndCompiler=wasm
-
-export aWorkDir="${aSrcRoot}/${aBuildRoot}/${aPlatformAndCompiler}-make"
-if [ ! -d "${aWorkDir}" ]; then
-  mkdir -p "${aWorkDir}"
-fi
-
-export aDestDir="${aSrcRoot}/${aBuildRoot}/${aPlatformAndCompiler}"
-if [ ! -d "${aDestDir}" ]; then
-  mkdir -p "${aDestDir}"
-fi
-
-export aLogFile="${aSrcRoot}/${aBuildRoot}/build-${aPlatformAndCompiler}.log"
-if [ -f "${aLogFile}" ]; then
-  rm "${aLogFile}"
-fi
-
-echo Start building OCCT for ${aPlatformAndCompiler}
-echo Start building OCCT for ${aPlatformAndCompiler}>> "${aLogFile}"
-
-pushd "${aWorkDir}"
-pwd
-echo toCMake=${toCMake}
-if [ "${toCMake}" = "1" ]; then
-
-echo "Configuring OCCT for WASM..."
-echo cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE:FILEPATH="${aToolchain}" \
-DCMAKE_BUILD_TYPE:STRING="Release" \
-DBUILD_LIBRARY_TYPE:STRING="Static" \
-DINSTALL_DIR:PATH="${aDestDir}" \
-DINSTALL_DIR_INCLUDE:STRING="inc" \
-DINSTALL_DIR_RESOURCE:STRING="src" \
-D3RDPARTY_FREETYPE_DIR:PATH="$aFreeType" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="$aFreeType/include" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="$aFreeType/include" \
-DBUILD_MODULE_FoundationClasses:BOOL="ON" \
-DBUILD_MODULE_ModelingData:BOOL="${BUILD_ModelingData}" \
-DBUILD_MODULE_ModelingAlgorithms:BOOL="${BUILD_ModelingAlgorithms}" \
-DBUILD_MODULE_Visualization:BOOL="${BUILD_Visualization}" \
-DBUILD_MODULE_ApplicationFramework:BOOL="${BUILD_ApplicationFramework}" \
-DBUILD_MODULE_DataExchange:BOOL="${BUILD_DataExchange}" \
-DBUILD_MODULE_Draw:BOOL="OFF" \
-DBUILD_DOC_Overview:BOOL="OFF" "${aSrcRoot}"
-
-cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE:FILEPATH="${aToolchain}" \
-DCMAKE_BUILD_TYPE:STRING="Release" \
-DBUILD_LIBRARY_TYPE:STRING="Static" \
-DINSTALL_DIR:PATH="${aDestDir}" \
-DINSTALL_DIR_INCLUDE:STRING="inc" \
-DINSTALL_DIR_RESOURCE:STRING="src" \
-D3RDPARTY_FREETYPE_DIR:PATH="$aFreeType" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_freetype2:FILEPATH="$aFreeType/include" \
-D3RDPARTY_FREETYPE_INCLUDE_DIR_ft2build:FILEPATH="$aFreeType/include" \
-DBUILD_MODULE_FoundationClasses:BOOL="ON" \
-DBUILD_MODULE_ModelingData:BOOL="${BUILD_ModelingData}" \
-DBUILD_MODULE_ModelingAlgorithms:BOOL="${BUILD_ModelingAlgorithms}" \
-DBUILD_MODULE_Visualization:BOOL="${BUILD_Visualization}" \
-DBUILD_MODULE_ApplicationFramework:BOOL="${BUILD_ApplicationFramework}" \
-DBUILD_MODULE_DataExchange:BOOL="${BUILD_DataExchange}" \
-DBUILD_MODULE_Draw:BOOL="OFF" \
-DBUILD_DOC_Overview:BOOL="OFF" "${aSrcRoot}"
-
-  if [ $? -ne 0 ]; then
-    echo "Problem during configuration"
-    popd
-    exit 1
-  fi
-
-fi
-
-if [ "${toClean}" = "1" ]; then
-  make clean
-fi
-
-if [ "${toMake}" = "1" ]; then
-  echo Building...
-  make -j ${aNbJobs} 2>> "${aLogFile}"
-  if [ $? -ne 0 ]; then
-    echo "Problem during make operation"
-    popd
-    exit 1
-  fi
-  echo "${aLogFile}"
-fi
-
-if [ "${toInstall}" = "1" ]; then
-  echo Installing into ${aDestDir}
-  make install 2>> "${aLogFile}"
-fi
-
-popd
--- a/adm/scripts/wasm_custom.bat.template
+++ b/adm/scripts/wasm_custom.bat.template
@@ -1,16 +0,0 @@
-rem Environment configuration template for occ_build_wasm.bat (to be renamed as wasm_custom_env.bat)
-set "aFreeType=%aSrcRoot%\..\3rdparty\freetype-2.7.1-wasm"
-set "EMSDK_ROOT=%aSrcRoot%\..\emsdk"
-
-rem Uncomment to customize building steps
-rem set "aBuildRoot=work"
-rem set "toCMake=1"
-rem set "toClean=0"
-rem set "toMake=1"
-rem set "toInstall=1"
-
-rem set "BUILD_ModelingData=ON"
-rem set "BUILD_ModelingAlgorithms=ON"
-rem set "BUILD_Visualization=ON"
-rem set "BUILD_ApplicationFramework=ON"
-rem set "BUILD_DataExchange=ON"
--- a/adm/scripts/wasm_custom.sh.template
+++ b/adm/scripts/wasm_custom.sh.template
@@ -1,16 +0,0 @@
-# environment configuration template for occ_build_wasm.sh (to be renamed as wasm_custom_env.sh)
-export aFreeType="$aSrcRoot/../3rdparty/freetype-2.7.1-wasm"
-export EMSDK_ROOT="$aSrcRoot/../emsdk"
-
-# Uncomment to customize building steps
-#export aBuildRoot=work
-#export toCMake=1
-#export toClean=0
-#export toMake=1
-#export toInstall=1
-
-#export BUILD_ModelingData=ON
-#export BUILD_ModelingAlgorithms=ON
-#export BUILD_Visualization=ON
-#export BUILD_ApplicationFramework=ON
-#export BUILD_DataExchange=ON
--- a/adm/templates/OpenCASCADEConfig.cmake.in
+++ b/adm/templates/OpenCASCADEConfig.cmake.in
@@ -21,7 +21,6 @@ set (OpenCASCADE_DEVELOPMENT_VERSION "@OCC_VERSION_DEVELOPMENT@")
 # This is made to support different locations of CMake files:
 # - in UNIX style: $INSTALL_DIR/lib/cmake/opencascade-<version>
 # - in Windows style: $INSTALL_DIR/cmake
-# - in Android style: $INSTALL_DIR/libs/$CMAKE_ANDROID_ARCH_ABI/cmake/opencascade-<version>
 get_filename_component (OpenCASCADE_INSTALL_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH)
 get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
 if (OpenCASCADE_INSTALL_PREFIX MATCHES "/cmake$")
@@ -30,10 +29,6 @@ endif()
 if (OpenCASCADE_INSTALL_PREFIX MATCHES "/lib$")
  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
 endif()
-if (OpenCASCADE_INSTALL_PREFIX MATCHES "/libs/${CMAKE_ANDROID_ARCH_ABI}$")
-  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
-  get_filename_component (OpenCASCADE_INSTALL_PREFIX "${OpenCASCADE_INSTALL_PREFIX}" PATH)
-endif()

 # Set OpenCASCADE paths to headers, binaries, libraries, resources, tests, samples, data
 set (OpenCASCADE_BINARY_DIR   "${OpenCASCADE_INSTALL_PREFIX}/@INSTALL_DIR_BIN@")
--- a/adm/templates/build.bat
+++ b/adm/templates/build.bat
@@ -1,38 +0,0 @@
-@echo off
-setlocal
-
-rem Setup environment
-call "%~dp0env.bat" %1 %2 %3
-
-rem Define path to project file
-set "PRJFILE=%~dp0OCCT.sln"
-
-if "%VCVER%" == "vc8" (
-  call "%VS80COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc9" (
-  call "%VS90COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc10" (
-  call "%VS100COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc11" (
-  call "%VS110COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc12" (
-  call "%VS120COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc14" (
-  call "%VS140COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc141" (
-  call "%VS141COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc142" (
-  call "%VS142COMNTOOLS%/vsvars32.bat" > nul
-) else (
-  echo Error: wrong VS identifier
-  exit /B
-)
-
-set BUILDCONFIG=Release
-if "%CASDEB%"=="i" set BUILDCONFIG=RelWithDebInfo
-if "%CASDEB%"=="d" set BUILDCONFIG=Debug
-if "%ARCH%"=="32" set PLATFORM=win32
-if "%ARCH%"=="64" set PLATFORM=x64
-
-msbuild "%PRJFILE%" /m /fl /flp:LogFile="build_%BUILDCONFIG%.log" /p:Configuration=%BUILDCONFIG% /p:Platform=%PLATFORM% /p:BuildProjectReferences=false
-endlocal
--- a/adm/templates/codeblocks.sh
+++ b/adm/templates/codeblocks.sh
@@ -1,12 +1,11 @@
 #!/bin/bash
-# This file has been generated by genproj.tcl script from CASROOT/adm/templates/codeblocks.sh

 export TARGET="cbp"

 source ./env.sh "$1" "$TARGET"

 if [ -e "/Applications/CodeBlocks.app/Contents/MacOS/CodeBlocks" ]; then
-  /Applications/CodeBlocks.app/Contents/MacOS/CodeBlocks ./adm/$WOKSTATION/cbp/__SOLUTION__.workspace
+  /Applications/CodeBlocks.app/Contents/MacOS/CodeBlocks ./adm/$WOKSTATION/cbp/OCCT.workspace
 else
-  codeblocks ./adm/$WOKSTATION/cbp/__SOLUTION__.workspace
+  codeblocks ./adm/$WOKSTATION/cbp/OCCT.workspace
 fi
--- a/adm/templates/env.bat
+++ b/adm/templates/env.bat
@@ -24,15 +24,11 @@ set "HAVE_GLES2=false"
 set "HAVE_D3D=false"
 set "HAVE_ZLIB=false"
 set "HAVE_LIBLZMA=false"
-set "HAVE_RAPIDJSON=false"
-set "HAVE_OPENVR=false"
-set "HAVE_E57=false"
 set "CSF_OPT_INC="
 set "CSF_OPT_LIB32="
 set "CSF_OPT_LIB64="
 set "CSF_OPT_BIN32="
 set "CSF_OPT_BIN64="
-set "CSF_DEFINES=%CSF_DEFINES_EXTRA%"

 if not ["%CASROOT%"] == [""] if exist "%SCRIPTROOT%\%CASROOT%" set "CASROOT=%SCRIPTROOT%\%CASROOT%"
 if     ["%CASROOT%"] == [""] set "CASROOT=%SCRIPTROOT%"
@@ -78,9 +74,6 @@ if "%VCVER:~-4%" == "-uwp" (
  set VCLIB=%VCLIB%-uwp
  set VCPROP=Universal
 )
-if "%VCFMT%" == "vclang" (
-  set VCLIB=vc14
-)
 rem echo VCVER=%VCVER% VCFMT=%VCFMT% VCLIB=%VCLIB% VCPROP=%VCPROP%

 rem ----- Parsing of Visual Studio platform -----
@@ -106,14 +99,6 @@ if not "%DevEnvDir%" == "" (
  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[15.0,15.99]" -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
    set "DevEnvDir=%%i\Common7\IDE\"
  )
-) else if /I "%VCFMT%" == "vc142" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "DevEnvDir=%%i\Common7\IDE\"
-  )
-) else if /I "%VCFMT%" == "vclang" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "DevEnvDir=%%i\Common7\IDE\"
-  )
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
@@ -125,8 +110,6 @@ if not "%DevEnvDir%" == "" (
  echo vc12  = VS 2013 ^(SP3^)
  echo vc14  = VS 2015
  echo vc141 = VS 2017
-  echo vc142 = VS 2019
-  echo vclang = VS 2019 with ClangCL toolset
  exit /B
 )

@@ -151,16 +134,6 @@ if /I "%VCFMT%" == "vc9" (
    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
  )
  set "VCPlatformToolSet=v141"
-) else if /I "%VCFMT%" == "vc142" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
-  ) 
-  set "VCPlatformToolSet=v142"
-) else if /I "%VCFMT%" == "vclang" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
-  ) 
-  set "VCPlatformToolSet=ClangCL"
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
@@ -189,9 +162,6 @@ if ["%HAVE_GLES2%"]     == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DH
 if ["%HAVE_D3D%"]       == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_D3D"       & set "CSF_DEFINES=HAVE_D3D;%CSF_DEFINES%"
 if ["%HAVE_ZLIB%"]      == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_ZLIB"      & set "CSF_DEFINES=HAVE_ZLIB;%CSF_DEFINES%"
 if ["%HAVE_LIBLZMA%"]   == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_LIBLZMA"   & set "CSF_DEFINES=HAVE_LIBLZMA;%CSF_DEFINES%"
-if ["%HAVE_RAPIDJSON%"] == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_RAPIDJSON" & set "CSF_DEFINES=HAVE_RAPIDJSON;%CSF_DEFINES%"
-if ["%HAVE_OPENVR%"]    == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_OPENVR"    & set "CSF_DEFINES=HAVE_OPENVR;%CSF_DEFINES%"
-if ["%HAVE_E57%"]       == ["true"] set "PRODUCTS_DEFINES=%PRODUCTS_DEFINES% -DHAVE_E57"       & set "CSF_DEFINES=HAVE_E57;%CSF_DEFINES%"

 rem Eliminate VS warning
 if ["%CSF_DEFINES%"]  == [""] set "CSF_DEFINES=;"
--- a/adm/templates/env.bat.in
+++ b/adm/templates/env.bat.in
@@ -70,10 +70,6 @@ if not "%DevEnvDir%" == "" (
  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[15.0,15.99]" -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
    set "DevEnvDir=%%i\Common7\IDE\"
  )
-) else if /I "%VCFMT%" == "vc142" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "DevEnvDir=%%i\Common7\IDE\"
-  )  
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
@@ -102,11 +98,6 @@ if /I "%VCFMT%" == "vc9" (
    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
  )
  set "VCPlatformToolSet=v141"
-) else if /I "%VCFMT%" == "vc142" (
-  for /f "usebackq delims=" %%i in (`vswhere.exe -version "[16.0,16.99]" -latest -requires Microsoft.VisualStudio.Workload.%VCPROP% -property installationPath`) do (
-    set "VCVARS=%%i\VC\Auxiliary\Build\vcvarsall.bat"
-  ) 
-  set "VCPlatformToolSet=v142"
 ) else if /I "%VCFMT%" == "gcc" (
  rem MinGW
 ) else (
--- a/adm/templates/env.build.sh.in
+++ b/adm/templates/env.build.sh.in
@@ -1,137 +0,0 @@
-#!/bin/bash
-
-aScriptPath=${BASH_SOURCE%/*}; if [ -d "${aScriptPath}" ]; then cd "$aScriptPath"; fi; aScriptPath="$PWD";
-
-# ----- For compatability with external application using CASROOT -----
-if [ "${CASROOT}" == "" ]; then
-  export CASROOT="${aScriptPath}"
-fi
-
-# ----- Define path to 3rdparty products -----
-export THIRDPARTY_DIR="@3RDPARTY_DIR@"
-
-# ----- Read script arguments -----
-shopt -s nocasematch
-export CASDEB="";
-if [[ "$1" == "debug" ]]; then export CASDEB="d"; fi
-if [[ "$1" == "d" ]]; then export CASDEB="d"; fi
-if [[ "$1" == "relwithdeb" ]]; then export CASDEB="i"; fi
-if [[ "$1" == "i" ]]; then export CASDEB="i"; fi
-shopt -u nocasematch
-
-# ----- Set path to 3rd party and OCCT libraries -----
-anArch=`uname -m`
-if [ "$anArch" != "x86_64" ] && [ "$anArch" != "ia64" ]; then
-  export ARCH="32";
-else
-  export ARCH="64";
-fi
-
-aSystem=`uname -s`
-if [ "$aSystem" == "Darwin" ]; then
-  export WOKSTATION="mac";
-  export ARCH="64";
-else
-  export WOKSTATION="lin";
-fi
-
-# ----- Set local settings -----
-if [ -e "${CASROOT}/custom.sh" ]; then
-  source "${CASROOT}/custom.sh" "${CASDEB}" "${ARCH}"
-fi
-
-THRDPARTY_PATH=""
-if [ "$TCL_DIR" != "" ]; then
-  THRDPARTY_PATH="${TCL_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$TK_DIR" != "" ]; then
-  THRDPARTY_PATH="${TK_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$FREETYPE_DIR" != "" ]; then
-  THRDPARTY_PATH="${FREETYPE_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$FREEIMAGE_DIR" != "" ]; then
-  THRDPARTY_PATH="${FREEIMAGE_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$TBB_DIR" != "" ]; then
-  THRDPARTY_PATH="${TBB_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$VTK_DIR" != "" ]; then
-  THRDPARTY_PATH="${VTK_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$FFMPEG_DIR" != "" ]; then
-  THRDPARTY_PATH="${FFMPEG_DIR}:${THRDPARTY_PATH}"
-fi
-
-if [ "$QTDIR" != "" ]; then
-  THRDPARTY_PATH="${QTDIR}/lib:${THRDPARTY_PATH}"
-fi
-
-if [ "$TK_DIR" != "$TCL_DIR" ]; then
-  if [ "$TK_DIR" != "" ]; then
-    export TK_LIBRARY="${TK_DIR}/../lib/tk${TK_VERSION_WITH_DOT}"
-  fi
-  if [ "$TCL_DIR" != "" ]; then
-    export TCL_LIBRARY="${TCL_DIR}/../lib/tcl${TCL_VERSION_WITH_DOT}"
-  fi
-fi
-
-if [ "$LD_LIBRARY_PATH" != "" ]; then
-  export LD_LIBRARY_PATH="${THRDPARTY_PATH}:${LD_LIBRARY_PATH}"
-else
-  export LD_LIBRARY_PATH="${THRDPARTY_PATH}"
-fi
-
-if [ "$CSF_OCCTBinPath" != "" ]; then
-  export PATH="${CSF_OCCTBinPath}:${PATH}"
-fi
-
-if [ "$CSF_OCCTLibPath" != "" ]; then
-  if [ "$LD_LIBRARY_PATH" != "" ]; then
-    export LD_LIBRARY_PATH="${CSF_OCCTLibPath}:${LD_LIBRARY_PATH}"
-  else
-    export LD_LIBRARY_PATH="${CSF_OCCTLibPath}"
-  fi
-fi
-
-if [ "$WOKSTATION" == "mac" ]; then
-  if [ "$DYLD_LIBRARY_PATH" != "" ]; then
-    export DYLD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${DYLD_LIBRARY_PATH}"
-  else
-    export DYLD_LIBRARY_PATH="${LD_LIBRARY_PATH}"
-  fi
-fi
-
-# ----- Set envoronment variables used by OCCT -----
-export CSF_LANGUAGE=us
-export MMGT_CLEAR=1
-export CSF_SHMessage="${CSF_OCCTResourcePath}/SHMessage"
-export CSF_MDTVTexturesDirectory="${CSF_OCCTResourcePath}/Textures"
-export CSF_ShadersDirectory="${CSF_OCCTResourcePath}/Shaders"
-export CSF_XSMessage="${CSF_OCCTResourcePath}/XSMessage"
-export CSF_TObjMessage="${CSF_OCCTResourcePath}/TObj"
-export CSF_StandardDefaults="${CSF_OCCTResourcePath}/StdResource"
-export CSF_PluginDefaults="${CSF_OCCTResourcePath}/StdResource"
-export CSF_XCAFDefaults="${CSF_OCCTResourcePath}/StdResource"
-export CSF_TObjDefaults="${CSF_OCCTResourcePath}/StdResource"
-export CSF_StandardLiteDefaults="${CSF_OCCTResourcePath}/StdResource"
-export CSF_IGESDefaults="${CSF_OCCTResourcePath}/XSTEPResource"
-export CSF_STEPDefaults="${CSF_OCCTResourcePath}/XSTEPResource"
-export CSF_XmlOcafResource="${CSF_OCCTResourcePath}/XmlOcafResource"
-export CSF_MIGRATION_TYPES="${CSF_OCCTResourcePath}/StdResource/MigrationSheet.txt"
-
-# ----- Draw Harness special stuff -----
-if [ -e "${CSF_OCCTResourcePath}/DrawResources" ]; then
-  export DRAWHOME="${CSF_OCCTResourcePath}/DrawResources"
-  export CSF_DrawPluginDefaults="${CSF_OCCTResourcePath}/DrawResources"
-
-  if [ -e "${CSF_OCCTResourcePath}/DrawResources/DrawDefault" ]; then
-    export DRAWDEFAULT="${CSF_OCCTResourcePath}/DrawResources/DrawDefault"
-  fi
-fi
--- a/adm/templates/env.sh
+++ b/adm/templates/env.sh
@@ -6,7 +6,7 @@ aScriptPath=${BASH_SOURCE%/*}; if [ -d "${aScriptPath}" ]; then cd "$aScriptPath
 # Reset values
 export CASROOT="__CASROOT__"
 export CASDEB=""
-export PRJFMT="";
+export TARGET="";
 export HAVE_TBB="false";
 export HAVE_OPENCL="false";
 export HAVE_FREEIMAGE="false";
@@ -15,9 +15,6 @@ export HAVE_VTK="false";
 export HAVE_GLES2="false";
 export HAVE_ZLIB="false";
 export HAVE_LIBLZMA="false";
-export HAVE_RAPIDJSON="false";
-export HAVE_OPENVR="false";
-export HAVE_E57="false";
 export MACOSX_USE_GLX="false";
 export CSF_OPT_INC=""
 export CSF_OPT_LIB32=""
@@ -43,9 +40,9 @@ do
  elif [ "$i" == "i" ] || [ "$i" == "relwithdeb" ]; then
    export CASDEB="i"
  elif [ "$i" == "cbp" ]; then
-    export PRJFMT="cbp";
+    export TARGET="cbp";
  elif [ "$i" == "xcd" ] || [ "$i" == "xcode" ]; then
-    export PRJFMT="xcd";
+    export TARGET="xcd";
  fi
 done
 shopt -u nocasematch
@@ -67,32 +64,28 @@ else
 fi

 export CASBIN=""
-if [ "${PRJFMT}" == "xcd" ]; then
+if [ "${TARGET}" == "cbp" ]; then
+  export CASBIN="${WOKSTATION}/cbp"
+elif [ "${TARGET}" == "xcd" ]; then
  export CASBIN="adm/mac/xcd/build"
-else
-  if [ "$aSystem" == "Darwin" ]; then
-    export CASBIN="${WOKSTATION}/clang"
-  else
-    export CASBIN="${WOKSTATION}/gcc"
-  fi
 fi

 export CSF_OPT_INC="${CSF_OPT_INC}:${CASROOT}/inc"

-if [ "${PRJFMT}" == "xcd" ]; then
-  export CSF_OPT_LIB32D="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/Debug"
-  export CSF_OPT_LIB64D="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/Debug"
-  export CSF_OPT_LIB32="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/Release"
-  export CSF_OPT_LIB64="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/Release"
-  export CSF_OPT_LIB32I="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/RelWithDebInfo"
-  export CSF_OPT_LIB64I="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/RelWithDebInfo"
-else
+if [ "${TARGET}" == "cbp" ]; then
  export CSF_OPT_LIB32D="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/libd"
  export CSF_OPT_LIB64D="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/libd"
  export CSF_OPT_LIB32="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/lib"
  export CSF_OPT_LIB64="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/lib"
  export CSF_OPT_LIB32I="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/libi"
  export CSF_OPT_LIB64I="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/libi"
+elif [ "${TARGET}" == "xcd" ]; then
+  export CSF_OPT_LIB32D="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/Debug"
+  export CSF_OPT_LIB64D="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/Debug"
+  export CSF_OPT_LIB32="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/Release"
+  export CSF_OPT_LIB64="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/Release"
+  export CSF_OPT_LIB32I="${CSF_OPT_LIB32}:${CASROOT}/${CASBIN}/RelWithDebInfo"
+  export CSF_OPT_LIB64I="${CSF_OPT_LIB64}:${CASROOT}/${CASBIN}/RelWithDebInfo"
 fi

 export CSF_OPT_CMPL=""
@@ -106,9 +99,6 @@ if [ "$HAVE_GLES2"     == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -D
 if [ "$HAVE_VTK"       == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_VTK"; fi
 if [ "$HAVE_ZLIB"      == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_ZLIB"; fi
 if [ "$HAVE_LIBLZMA"   == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_LIBLZMA"; fi
-if [ "$HAVE_RAPIDJSON" == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_RAPIDJSON"; fi
-if [ "$HAVE_OPENVR"    == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_OPENVR"; fi
-if [ "$HAVE_E57"       == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DHAVE_E57"; fi
 # Option to compile OCCT with X11 libs on Mac OS X
 if [ "$MACOSX_USE_GLX" == "true" ]; then export CSF_OPT_CMPL="${CSF_OPT_CMPL} -DMACOSX_USE_GLX"; fi

@@ -184,7 +174,7 @@ export CSF_OCCTSamplesPath="${CSF_OCCTSamplesPath:-$CASROOT/samples}"
 export CSF_OCCTDataPath="${CSF_OCCTDataPath:-$CASROOT/data}"
 export CSF_OCCTTestsPath="${CSF_OCCTTestsPath:-$CASROOT/tests}"

-if [ "${PRJFMT}" == "xcd" ]; then
+if [ "${TARGET}" == "xcd" ]; then
  if [ "${CASDEB}" == "d" ]; then
    export CSF_OCCTBinPath="${CSF_OCCTBinPath:-$CASROOT/$CASBIN/Debug}"
  else
--- a/adm/templates/env.install.sh.in
+++ b/adm/templates/env.install.sh.in
--- a/adm/templates/install.bat
+++ b/adm/templates/install.bat
@@ -1,38 +0,0 @@
-@echo off
-setlocal
-
-rem Setup environment
-call "%~dp0env.bat" %1 %2 %3
-
-rem Define path to project file
-set "PRJFILE=%~dp0INSTALL.vcxproj"
-
-if "%VCVER%" == "vc8" (
-  call "%VS80COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc9" (
-  call "%VS90COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc10" (
-  call "%VS100COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc11" (
-  call "%VS110COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc12" (
-  call "%VS120COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc14" (
-  call "%VS140COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc141" (
-  call "%VS141COMNTOOLS%/vsvars32.bat" > nul
-) else if "%VCVER%" == "vc142" (
-  call "%VS142COMNTOOLS%/vsvars32.bat" > nul
-) else (
-  echo Error: wrong VS identifier
-  exit /B
-)
-
-set BUILDCONFIG=Release
-if "%CASDEB%"=="i" set BUILDCONFIG=RelWithDebInfo
-if "%CASDEB%"=="d" set BUILDCONFIG=Debug
-if "%ARCH%"=="32" set PLATFORM=win32
-if "%ARCH%"=="64" set PLATFORM=x64
-
-msbuild "%PRJFILE%" /m /fl /flp:LogFile="install_%BUILDCONFIG%.log" /p:Configuration=%BUILDCONFIG% /p:Platform=%PLATFORM% /p:BuildProjectReferences=false
-endlocal
--- a/adm/templates/msvc.bat
+++ b/adm/templates/msvc.bat
@@ -1,11 +1,10 @@
@echo off
-rem This file has been generated by genproj.tcl script from CASROOT/adm/templates/msvc.bat

 rem Setup environment
 call "%~dp0env.bat" %1 %2 %3

 rem Define path to project file
-set "PRJFILE=%~dp0\adm\msvc\%VCVER%\__SOLUTION__.sln"
+set "PRJFILE=%~dp0\adm\msvc\%VCVER%\OCCT.sln"
 if not exist "%PRJFILE%" set "PRJFILE=%~dp0\adm\msvc\%VCVER%\Products.sln"
 if not "%4" == "" (
  set "PRJFILE=%4"
--- a/adm/templates/template.vc10
+++ b/adm/templates/template.vc10
@@ -110,7 +110,7 @@
      <PreprocessorDefinitions>NDEBUG;No_Exception;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>.\..\..\..\win32\__VCVER__\bin\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\lib;$(CSF_OPT_LIB32);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
@@ -159,7 +159,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>.\..\..\..\win32\__VCVER__\bind\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\libd;$(CSF_OPT_LIB32D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
@@ -206,7 +206,7 @@
      <PreprocessorDefinitions>NDEBUG;No_Exception;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>.\..\..\..\win64\__VCVER__\bin\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\lib;$(CSF_OPT_LIB64);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
@@ -255,7 +255,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;ws2_32.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>.\..\..\..\win64\__VCVER__\bind\__TKNAM__.dll</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\libd;$(CSF_OPT_LIB64D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
--- a/adm/templates/template.vc10x
+++ b/adm/templates/template.vc10x
@@ -103,7 +103,7 @@
      <PreprocessorDefinitions>NDEBUG;No_Exception;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;%(AdditionalDependencies)</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\lib;$(CSF_OPT_LIB32);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>__VCReleasePDB__</GenerateDebugInformation>
@@ -149,7 +149,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;%(AdditionalDependencies)</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win32\__VCVER__\libd;$(CSF_OPT_LIB32D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -193,7 +193,7 @@
      <PreprocessorDefinitions>NDEBUG;No_Exception;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;%(AdditionalDependencies)</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\lib;$(CSF_OPT_LIB64);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>__VCReleasePDB__</GenerateDebugInformation>
@@ -238,7 +238,7 @@
      <PreprocessorDefinitions>_DEBUG;$(CSF_DEFINES);%(PreprocessorDefinitions)</PreprocessorDefinitions>
    </ResourceCompile>
    <Link>
-      <AdditionalDependencies>__TKDEP_DEBUG__</AdditionalDependencies>
+      <AdditionalDependencies>__TKDEP__;%(AdditionalDependencies)</AdditionalDependencies>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <AdditionalLibraryDirectories>..\..\..\win64\__VCVER__\libd;$(CSF_OPT_LIB64D);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -248,11 +248,7 @@
    </Link>
  </ItemDefinitionGroup>
  <ItemGroup>
-__FILES__
-  </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="__XQTNAM__.rc" />
-  </ItemGroup>
+__FILES__  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
--- a/adm/templates/xcode.sh
+++ b/adm/templates/xcode.sh
@@ -1,8 +1,7 @@
 #!/bin/bash
-# This file has been generated by genproj.tcl script from CASROOT/adm/templates/xcode.sh

 export TARGET="xcd"

 source ./env.sh "$1" "$TARGET"

-open -a Xcode ./adm/mac/xcd/__SOLUTION__.xcworkspace
+open -a Xcode ./adm/mac/xcd/OCCT.xcworkspace
--- a/dox/CMakeLists.txt
+++ b/dox/CMakeLists.txt
@@ -89,14 +89,6 @@ file (APPEND ${OCCT_CONFIG_FOR_DOXYGEN} "\nEXTERNAL_SEARCH        = NO")
 # Formula options
 file (APPEND ${OCCT_CONFIG_FOR_DOXYGEN} "\nMATHJAX_RELPATH        = ${3RDPARTY_MATHJAX_RELATIVE_PATH}")

-# If MSVC is used as build system, change warning format to the one recognized by MSVC
-if (MSVC)
-  file (APPEND ${OCCT_CONFIG_FOR_DOXYGEN} "\nWARN_FORMAT            = \"$file($line): $text\"")
-endif()
-
-# Avoid Doxygen parsing messages in the build log
-file (APPEND ${OCCT_CONFIG_FOR_DOXYGEN} "\nQUIET                  = YES")
-
 # Copy index file to provide fast access to HTML documentation
 file(COPY "${OCCT_OVERVIEW_RESOURCE_DIR}/index.html" DESTINATION "${OCCT_GENERATED_OVERVIEW_DIR}")

--- a/dox/FILES_HTML.txt
+++ b/dox/FILES_HTML.txt
@@ -14,7 +14,6 @@ overview/overview.md
 ../samples/qt/AndroidQt/ReadMe.md
 ../samples/java/jniviewer/ReadMe.md
 ../samples/ios/UIKitSample/ReadMe.md
-../samples/webgl/ReadMe.md

 tutorial/tutorial.md

@@ -45,7 +44,6 @@ dev_guides/git_guide/git_guide.md
 dev_guides/tests/tests.md
 dev_guides/debug/debug.md
 dev_guides/upgrade/upgrade.md
-dev_guides/visualization/pbr_math.md

 dev_guides/building/building.md
 dev_guides/building/3rdparty/3rdparty_windows.md
--- a/dox/FILES_PDF.txt
+++ b/dox/FILES_PDF.txt
@@ -26,6 +26,5 @@ dev_guides/contribution/coding_rules.md
 dev_guides/git_guide/git_guide.md
 dev_guides/tests/tests.md
 dev_guides/upgrade/upgrade.md
-dev_guides/visualization/pbr_math.md

 tutorial/tutorial.md
--- a/dox/dev_guides/building/3rdparty/3rdparty_linux.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_linux.md
@@ -10,7 +10,7 @@ products used by Open CASCADE Technology and samples on Linux platform.

 The links for downloading the third-party products are available on the web site 
 of OPEN CASCADE SAS at 
-https://www.opencascade.com/content/3rd-party-components.
+http://www.opencascade.com/content/3rd-party-components. 

 There are two types of third-party products, which are  necessary to build OCCT: 
  
@@ -30,7 +30,7 @@ Tcl/Tk is required for DRAW test harness.

@subsubsection dev_guides__building_3rdparty_linux_2_1_2 Installation from sources: Tcl
  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 
  
 1. Enter the unix sub-directory of the directory where the Tcl source  files are located <i>(TCL_SRC_DIR)</i>. 

@@ -53,7 +53,7 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h

@subsubsection dev_guides__building_3rdparty_linux_2_1_3 Installation from sources: Tk
  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 
  
 1. Enter the unix sub-directory of the directory where the Tk source files are located <i>(TK_SRC_DIR)</i> 

@@ -78,7 +78,7 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h
@subsection dev_guides__building_3rdparty_linux_2_2 FreeType

 FreeType is required for text display in the 3D viewer. 
-Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
+Download the necessary archive from http://sourceforge.net/projects/freetype/files/ and unpack it. 
  
 1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 

@@ -103,13 +103,13 @@ Download the necessary archive from https://sourceforge.net/projects/freetype/fi
    
@subsection dev_guides__building_3rdparty_linux_3_1 TBB

-This third-party product is  installed with binaries from the archive that can be downloaded from https://github.com/intel/tbb.
+This third-party product is  installed with binaries from the archive that can be downloaded from http://threadingbuildingblocks.org. 
 Go to the **Download** page, find the  release version you need and pick the archive for Linux platform.
 To install, unpack the downloaded archive of TBB product.

@subsection dev_guides__building_3rdparty_linux_3_3 FreeImage

-Download the necessary archive from https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+Download the necessary archive from http://sourceforge.net/projects/freeimage/files/Source%20Distribution/
 and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*. 
  
 1. Modify *FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h*: 
@@ -174,11 +174,11 @@ and unpack it. The directory with unpacked sources is  further referred to as *F

@subsection dev_guides__building_3rdparty_linux_3_4 VTK

-You can download VTK sources from https://www.vtk.org/VTK/resources/software.html
+You can download VTK sources from http://www.vtk.org/VTK/resources/software.html

 ### The building procedure:

-Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it.
+Download the necessary archive from http://www.vtk.org/VTK/resources/software.html and unpack it.

 1. Install or build *cmake* product from the source file.
 2. Start *cmake* in GUI mode with the directory where the source files of *VTK* are located:
--- a/dox/dev_guides/building/3rdparty/3rdparty_osx.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_osx.md
@@ -8,7 +8,7 @@ This document presents additional guidelines for building third-party products
 used by Open CASCADE Technology and samples on Mac OS X platform (10.6.4  and later). 

 The links for downloading the third-party products are available 
-on the web site of OPEN CASCADE SAS at https://www.opencascade.com/content/3rd-party-components.
+on the web site of OPEN CASCADE SAS at http://www.opencascade.com/content/3rd-party-components. 

 There are two types of third-party products, which are  necessary to build OCCT: 
  
@@ -27,7 +27,7 @@ Tcl/Tk is required for DRAW test harness. Version 8.5 or  8.6 can be used with O

@subsubsection dev_guides__building_3rdparty_osx_2_1_2 Installation from sources: Tcl 8.5

-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 

 1. Enter the *macosx* sub-directory of the directory where the Tcl source files are located <i>(TCL_SRC_DIR)</i>. 

@@ -50,7 +50,7 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h

@subsubsection dev_guides__building_3rdparty_osx_2_1_3 Installation from sources: Tk 8.5

-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 

 1. Enter the *macosx* sub-directory of the directory where the  source files of Tk are located <i>(TK_SRC_DIR)</i>. 

@@ -74,7 +74,7 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h
  
 FreeType is required for text display in the 3D viewer. 

-Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
+Download the necessary archive from http://sourceforge.net/projects/freetype/files/ and unpack it. 

 1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 

@@ -100,7 +100,7 @@ Download the necessary archive from https://sourceforge.net/projects/freetype/fi
@subsection dev_guides__building_3rdparty_osx_3_1 TBB 3.x or 4.x

 This third-party product is installed with binaries from the archive 
-that can be downloaded from https://github.com/intel/tbb.
+that can be downloaded from http://threadingbuildingblocks.org/. 
 Go to the **Download** page, find the release version you need (e.g. *tbb30_018oss*) 
 and  pick the archive for Mac OS X platform. 
 To install, unpack the downloaded archive of TBB 3.0 product (*tbb30_018oss_osx.tgz*).
@@ -108,12 +108,12 @@ To install, unpack the downloaded archive of TBB 3.0 product (*tbb30_018oss_osx.
@subsection dev_guides__building_3rdparty_osx_3_3 FreeImage 3.14.1 or 3.15.x

 Download the necessary archive from 
-https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+http://sourceforge.net/projects/freeimage/files/Source%20Distribution/   
 and unpack it. The directory with unpacked sources is  further referred to as *FREEIMAGE_SRC_DIR*.  

 Note that for building FreeImage on Mac OS X 10.7 you should replace *Makefile.osx* 
 in *FREEIMAGE_SRC_DIR* by the corrected file, which you can find in attachment to issue #22811 in OCCT Mantis bug tracker 
-(https://tracker.dev.opencascade.org/file_download.php?file_id=6937&type=bug).
+(http://tracker.dev.opencascade.org/file_download.php?file_id=6937&type=bug). 

 1. If you build FreeImage 3.15.x you can skip this  step. 
   Modify <i>FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h:</i> 
--- a/dox/dev_guides/building/3rdparty/3rdparty_windows.md
+++ b/dox/dev_guides/building/3rdparty/3rdparty_windows.md
@@ -8,7 +8,7 @@ This document presents guidelines for building third-party products used by Open

 You need to use the same version of MS Visual Studio for building all third-party products and OCCT itself, in order to receive a consistent set of run-time binaries. 

-The links for downloading the third-party products are available on the web site of OPEN CASCADE SAS at https://www.opencascade.com/content/3rd-party-components.
+The links for downloading the third-party products are available on the web site of OPEN CASCADE SAS at http://www.opencascade.com/content/3rd-party-components.

 There are two types of third-party products used  by OCCT: 

@@ -32,7 +32,7 @@ Tcl/Tk is required for DRAW test harness.

@subsubsection dev_guides__building_3rdparty_win_2_1_1 Installation from sources: Tcl
  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 
  
 1. In the *win* sub-directory, edit file *buildall.vc.bat*:

@@ -85,7 +85,7 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h

@subsubsection dev_guides__building_3rdparty_win_2_1_2 Installation from sources: Tk
  
-Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
+Download the necessary archive from http://www.tcl.tk/software/tcltk/download.html and unpack it. 

 Apply the same steps as described for building Tcl above, with the same INSTALLDIR.
 Note that Tk produces its own executable, called *wish*. 
@@ -94,7 +94,7 @@ You might need to edit default value of *TCLDIR* variable defined in *buildall.v

@subsection dev_guides__building_3rdparty_win_2_2 FreeType

-FreeType is required for text display in a 3D viewer. You can download its sources from https://sourceforge.net/projects/freetype/files/
+FreeType is required for text display in a 3D viewer. You can download its sources from http://sourceforge.net/projects/freetype/files/   

 ### The building procedure

@@ -148,7 +148,7 @@ FreeType is required for text display in a 3D viewer. You can download its sourc
@subsection dev_guides__building_3rdparty_win_3_1 TBB

 This third-party product is installed with binaries 
-from the archive that can be downloaded from https://github.com/intel/tbb.
+from the archive that can be downloaded from http://threadingbuildingblocks.org/. 
 Go to the **Download** page, find the  release version you need  (e.g. *tbb30_018oss*) and pick the archive for Windows  platform. 

 Unpack the downloaded  archive of TBB product into the *3rdparty* folder. 
@@ -159,7 +159,7 @@ Further in this document,  this folder is referred to as *tbb*.

 This third-party product should be built as a dynamically loadable library (.dll file). 
 You can download its sources from 
-https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
+http://sourceforge.net/projects/freeimage/files/Source%20Distribution/

 ### The building procedure: 

@@ -232,7 +232,7 @@ VTK is an open-source, freely available software system for 3D computer graphics

 ### The building procedure:

-1. Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it into *3rdparty* folder.
+1. Download the necessary archive from http://www.vtk.org/VTK/resources/software.html and unpack it into *3rdparty* folder.

   As a result, you will get a folder named, for example, <i>3rdparty\VTK-6.1.0.</i>

--- a/dox/dev_guides/building/3rdparty/images/genconf_linux.png
+++ b/dox/dev_guides/building/3rdparty/images/genconf_linux.png
--- a/dox/dev_guides/building/3rdparty/images/genconf_windows.png
+++ b/dox/dev_guides/building/3rdparty/images/genconf_windows.png
--- a/dox/dev_guides/building/android/android.md
+++ b/dox/dev_guides/building/android/android.md
@@ -10,9 +10,9 @@ The steps on Windows and Ubuntu are similar. There is the only one difference: m
 on Windows and native GNU make on Ubuntu.

 Required tools (download and install if it is required):
-  - CMake v3.7+ https://www.cmake.org/cmake/resources/software.html
+  - CMake v3.7+ http://www.cmake.org/cmake/resources/software.html
  - Android NDK rev.10+ https://developer.android.com/tools/sdk/ndk/index.html
-  - GNU Make: MinGW v4.82+ for Windows (https://sourceforge.net/projects/mingw/files/), GNU Make 4.0 for Ubuntu.
+  - GNU Make: MinGW v4.82+ for Windows (http://sourceforge.net/projects/mingw/files/), GNU Make 4.0 for Ubuntu. 

 ## Prerequisites

@@ -64,7 +64,7 @@ Then makefiles will appear in the build folder (e.g. <i> D:/occt/build-android <

 Alternatively one may specify the values without a toolchain file:

-> cmake -G "MinGW Makefiles" -DCMAKE_SYSTEM_NAME=Android -DCMAKE_ANDROID_NDK=D:/DevTools/android-ndk-r13b -DCMAKE_ANDROID_STL_TYPE=gnustl_shared -DCMAKE_SYSTEM_VERSION=21 -DCMAKE_ANDROID_ARCH_ABI=armeabi-v7a -DCMAKE_MAKE_PROGRAM=D:/DevTools/MinGW/bin/mingw32-make.exe -D3RDPARTY_DIR=D:/occt-3rdparty D:/occt
+> cmake -G "MinGW Makefiles" -DCMAKE_SYSTEM_NAME=Android -DCMAKE_ANDROID_NDK=D:/DevTools/android-ndk-r13b -DCMAKE_ANDROID_STL_TYPE=gnustl_shared -DCMAKE_SYSTEM_VERSION=15 -DCMAKE_ANDROID_ARCH_ABI=armeabi-v7a -DCMAKE_MAKE_PROGRAM=D:/DevTools/MinGW/bin/mingw32-make.exe -D3RDPARTY_DIR=D:/occt-3rdparty D:/occt

@figure{/dev_guides/building/android/images/android_image006.png}

--- a/dox/dev_guides/building/building.md
+++ b/dox/dev_guides/building/building.md
@@ -6,7 +6,7 @@ The list of required libraries depends on what OCCT modules will be used, and yo
 The typical minimum is **Freetype** (necessary for Visualization) and **Tcl/Tk** (for DRAW Test Harness).
 See "Third-party libraries" section in \ref OCCT_OVW_SECTION_5 "Overview" for a full list.

-On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from https://www.opencascade.com/content/3rd-party-components.
+On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from http://www.opencascade.com/content/3rd-party-components.
 On Linux and OS X, it is recommended to use the version installed in the system natively.

 You can also build third-party libraries from their sources:
--- a/dox/dev_guides/building/cmake/cmake.md
+++ b/dox/dev_guides/building/cmake/cmake.md
@@ -82,7 +82,6 @@ The following table gives the full list of environment variables used at the con
 |----------|------|---------|
 | CMAKE_BUILD_TYPE | String | Specifies the build type on single-configuration generators (such as make).  Possible values are Debug, Release and RelWithDebInfo |
 | USE_FREEIMAGE | Boolean flag | Indicates whether FreeImage product should be used in OCCT visualization module for support of popular graphics image formats (PNG, BMP, etc.) |
-| USE_RAPIDJSON | Boolean flag | Indicates whether RapidJSON product should be used in OCCT Data Exchange module for support of glTF mesh file format |
 | USE_TBB | Boolean flag | Indicates whether TBB 3rd party is used or not. TBB stands for Threading Building Blocks, the technology of Intel Corp, which comes with different mechanisms and patterns for injecting parallelism into your application. OCCT remains parallel even without TBB product |
 | USE_VTK | Boolean flag | Indicates whether VTK 3rd party is used or not. VTK stands for Visualization ToolKit, the technology of Kitware Inc intended for general-purpose scientific visualization. OCCT comes with a bridge between CAD data representation and VTK by means of its dedicated VIS component (VTK Integration Services). You may skip this 3rd party unless you are planning to use VTK visualization for OCCT geometry. See the official documentation @ref occt_user_guides__vis for the details on VIS |
 | 3RDPARTY_DIR | Path | Defines the root directory where all required 3rd party products will be searched. Once you define this path it is very convenient to click "Configure" button in order to let CMake automatically detect all necessary products|
--- a/dox/dev_guides/building/msvc.md
+++ b/dox/dev_guides/building/msvc.md
@@ -18,7 +18,7 @@ If you have official distribution with project files included, you can use them

 Before building OCCT, make sure to have all the required third-party libraries installed.

-The easiest way to install third-party libraries is to download archive with pre-built binaries, corresponding to version of Visual Studio you are using, from https://www.opencascade.com/content/3rd-party-components.
+The easiest way to install third-party libraries is to download archive with pre-built binaries, corresponding to version of Visual Studio you are using, from http://www.opencascade.com/content/3rd-party-components.

 You can also build third-party libraries from their sources, see @ref occt_dev_guides__building_3rdparty_windows for instructions.

@@ -37,8 +37,6 @@ If you have Visual Studio projects already available (pre-installed or generated
 | vc14-uwp  | 2015 (14)             | UWP (Universal Windows Platform) | vc14-uwp |
 | vc141     | 2017 (15)             | Desktop (Windows API)            | vc14 |
 | vc141-uwp | 2017 (15)             | UWP (Universal Windows Platform) | vc14-uwp |
-| vc142     | 2019 (16)             | Desktop (Windows API)            | vc14 |
-| vc142-uwp | 2019 (16)             | UWP (Universal Windows Platform) | vc14-uwp |

 * *ARCH* -- architecture (32 or 64), affects only *PATH* variable for execution
 * <i>HAVE_*</i> -- flags to enable or disable use of optional third-party products
--- a/dox/dev_guides/building/xcode.md
+++ b/dox/dev_guides/building/xcode.md
@@ -82,7 +82,7 @@ To start *DRAWEXE*, which has been built with Xcode on Mac OS X, perform the fol

 3.Run the script
 ~~~~~
-   ./draw.sh xcd [d]
+   ./draw_cbp.sh xcd [d]
 ~~~~~

 Option *d* is used if OCCT has been built in **Debug** mode.
--- a/dox/dev_guides/contribution_workflow/contribution_workflow.md
+++ b/dox/dev_guides/contribution_workflow/contribution_workflow.md
@@ -10,7 +10,7 @@ The purpose of this document is to describe standard workflow for processing con

 Each contribution should have corresponding issue (bug, or feature, or integration request) 
 registered in the MantisBT issue tracker system accessible by URL 
-https://tracker.dev.opencascade.org.
+http://tracker.dev.opencascade.org. 
 The issue is processed according to the described workflow.

@subsection occt_contribution_intro_access Access levels
--- a/dox/dev_guides/debug/debug.md
+++ b/dox/dev_guides/debug/debug.md
@@ -136,70 +136,11 @@ const char* GeomTools_Dump (void* theHandlePtr)
 Dump geometric object to cout.
 - *theHandlePtr* -- a pointer to the geometric variable (<i>Handle</i> to *Geom_Geometry* or *Geom2d_Curve* or descendant) to be set.

-
-@section occt_debug_dump_json Dump OCCT objects into Json
-
-Many OCCT classes may dump the current state into the stream. This stream contains the information about the class field into the field value/s.
-It is possible to prepare recursive dump using corresponded macro for class fields. The depth of this recursion is defined by parameter of the dump.
-The object defines What parameters should be presented in the Dump. The usual way is to dump all object fields.
-
-@subsection occt_debug_dump_json_object Implementation in object
-
-Steps to prepare dump of the object into json:
-
-1. Create method <b>DumpJson</b>. The method should accept the output stream and the depth for the fields dump.
-Depth, equal to zero means that only fields of this class should be dumped. Default value -1 means that whole tree of dump will be built recursively calling dump of all fields.
-
-2. Put into the first row of the method <b>OCCT_DUMP_CLASS_BEGIN</b> or <b>OCCT_DUMP_TRANSIENT_CLASS_BEGIN</b> (for Standard_Transient objects).
-This macro appends class name into output stream.
-
-3. Add several macro to store field values.
-
-The following macro are defined to cover the object parameters into json format:
-
-| Name                        | Result in json |
-| :-------------------------- | :--------|
-| OCCT_DUMP_FIELD_VALUE_NUMERICAL  | "field": value |
-| OCCT_DUMP_FIELD_VALUE_STRING     | "field": "value" |
-| OCCT_DUMP_FIELD_VALUE_POINTER    | "field": "pointer address" |
-| OCCT_DUMP_FIELD_VALUES_DUMPED    | "field": { result of field->DumpJson(...) } |
-| OCCT_DUMP_FIELD_VALUES_NUMERICAL | "field": [value_1, ..., value_n]
-| OCCT_DUMP_FIELD_VALUES_STRING    | "field": ["value_1", ..., "value_n"]
-| OCCT_DUMP_BASE_CLASS   | "kind": { result of kind::DumpJson(...) } |
-
-@subsection occt_debug_dump_json_draw Using in DRAW
-
-In DRAW, key '-dumpJson' is used to dump an object.
-It is implemented in 'vaspect' and 'boundingbox' commands.
-
-Json output for Bnd_OBB (using command 'bounding v -obb -dumpJson'):
-
-~~~~~
-"Bnd_OBB": {
-   "Center": {
-      "gp_XYZ": [1, 2, 3]
-   },
-   "Axes[0]": {
-       "gp_XYZ:" [1, 0, 0]
-   },
-   "Axes[1]": {
-       "gp_XYZ:" [0, 1, 0]
-   },
-   "Axes[2]": {
-       "gp_XYZ:" [0, 0, 1]
-   },
-   "HDims[0]": 0,
-   "HDims[1]": 0,
-   "HDims[2]": 0,
-   "IsAABox": 1,
-}
-~~~~~
-
@section occt_debug_vstudio Using Visual Studio debugger 

@subsection occt_debug_vstudio_command Command window 

-Visual Studio debugger provides the Command Window (can be activated from menu <b>View / Other Windows / Command Window</b>), which can be used to evaluate variables and expressions interactively in a debug session (see https://msdn.microsoft.com/en-us/library/c785s0kz.aspx). Note that the Immediate Window can also be used but it has some limitations, e.g. does not support aliases.
+Visual Studio debugger provides the Command Window (can be activated from menu <b>View / Other Windows / Command Window</b>), which can be used to evaluate variables and expressions interactively in a debug session (see http://msdn.microsoft.com/en-us/library/c785s0kz.aspx). Note that the Immediate Window can also be used but it has some limitations, e.g. does not support aliases.

 When the execution is interrupted by a breakpoint, you can use this window to call the above described functions in context of the currently debugged function. Note that in most cases you will need to specify explicitly context of the function by indicating the name of the DLL where it is defined.

@@ -369,53 +310,3 @@ Each counter has its name shown when the collected statistics are printed.
 In DRAW, use command *dperf* to print all performance statistics.

 Note that performance counters are not thread-safe.
-
-@section occt_debug_sanitizers Use of compiler sanitizers
-
-GCC and Clang compilers provide options for instrumenting the code with the tools intended for detection of run-time errors, called sanitizers.
-This section provides some hints for using sanitizers for detecting possible errors in OCCT code.
-
-@subsection occt_debug_sanitizers_linux Linux
-
-Example of configuration steps for Ubuntu:
-
-1. In CMake configuration:
-
-  - Use up-to-date version of the GCC or CLang compiler; make sure that if CMAKE_CXX_COMPILER is set to C++ compiler (e.g. "clang++-6.0") and CMAKE_C_COMPILER is set to C compiler (e.g. "clang-6.0")
-  - Ensure that CMAKE_LINKER is set to the C++ linker bundled with compiler (e.g. clang++-6.0); this is important to avoid linking problems
-  - For building with Address sanitizer, set CMAKE_CXX_FLAGS and CMAKE_C_FLAGS to "-fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls"
-  - For building with Undefined Behavior sanitizer, set CMAKE_CXX_FLAGS and CMAKE_C_FLAGS to "-fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls"
-  - Set CMAKE_BUILD_TYPE to RelWithDebInfo to get more informative stack traces on errors
-
-2. Build as usual (make)
-
-  Be prepared that it works much slower than normal build and consumes more disk space.
-
-3. Before running executable, make sure that "llvm-symbolizer" is in PATH; this is necessary to get human-readable stack traces. The tool must have exactly that name.
-
-  If it is installed in common folder (/usr/bin or similar) with different name, one option is to create a symlink, for instance:
-> sudo ln -s /usr/bin/llvm-symbolizer-6.0 /usr/bin/llvm-symbolizer
-
-  Alternatively, add directory where actual llvm-symbolizer is located (such as /usr/lib/llvm-6.0/bin) to the PATH variable. 
-
-4. Set environment variable to disable memory leaks detection (they seem to be reported for every global variable at exit, not much useful):
-> export ASAN_OPTIONS=detect_leaks=0
-
-5. Set environment variable CSF_CPULIMIT_FACTOR to reasonably large number to increase the time limits for program execution (used by OCCT tests) to compensate the performance penalty introduced by sanitizers:
-> export CSF_CPULIMIT_FACTOR=20
-
-6. When using UBSan, set environment variable UBSAN_OPTIONS to get stack traces:
-> export UBSAN_OPTIONS=print_stacktrace=1
-
-7. Run DRAW and perform tests as usual, keeping in mind that running with sanitizer is much heavier than normal build:
-> ./draw.sh relwithdeb  <br>
-> Draw[]> testgrid -parallel 0
-
-Note that when running tests under sanitizers, behavior may be different.
-Known problems (as of CLang 6.0) are:
- Software signals (access violation etc.) are not handled
- Heap memory usage always reports zero
-
-@subsection occt_debug_sanitizers_windows Windows
-
-Though CLang toolset is available in Visual Studio 2015 and newer, sanitizer do not seem to be available out of the box (last tested with VS 2019 16.2.3).
--- a/dox/dev_guides/dev_guides.md
+++ b/dox/dev_guides/dev_guides.md
@@ -11,10 +11,6 @@ The following documents provide information on OCCT building, development and te
 * @subpage occt_dev_guides__tests "Automatic Testing system"
 * @subpage occt_dev_guides__debug "Debugging tools and hints"

-The following documents provide information on OCCT algorithms background:
-
-* @subpage occt_dev_guides__pbr_math "Physically-based Rendering math (PBR for rasterization)"
-
 The following guide provides information relevant to upgrading applications developed with previous versions of OCCT, to recent one:

 * @subpage occt_dev_guides__upgrade "Upgrade from previous OCCT versions"
--- a/dox/dev_guides/documentation/documentation.md
+++ b/dox/dev_guides/documentation/documentation.md
@@ -12,15 +12,15 @@ This document provides practical guidelines for generation and editing of OCCT u
 You need to have the following software installed to generate the documentation.

 **Tcl/Tk**
-Version 8.5 or 8.6: https://www.tcl.tk/software/tcltk/download.html
+Version 8.5 or 8.6: http://www.tcl.tk/software/tcltk/download.html

 **Doxygen**
-Version 1.8.4 or above: http://www.doxygen.nl/download.html
+Version 1.8.4 or above: http://www.stack.nl/~dimitri/doxygen/download.html

 **Dot**
-Part of Graphviz software, used by Doxygen for generation of class diagrams in Reference Manual: https://www.graphviz.org/download/
+Part of Graphviz software, used by Doxygen for generation of class diagrams in Reference Manual: http://www.graphviz.org/Download..php

-**MiKTeX** or other package providing **pdflatex** command (only needed for generation of PDF documents): https://miktex.org/download
+**MiKTeX** or other package providing **pdflatex** command (only needed for generation of PDF documents): http://miktex.org/download

 **Inkscape** (only needed for generation of PDF documents containing SVG images): http://www.inkscape.org/download

@@ -134,7 +134,7 @@ Add a relative path to *svn.md* in file <i>dox/FILES.txt</i>. For instance
 dev_guides/svn/svn.md
@endverbatim

-**Note** that the order of paths to documents in *FILES.txt* is reproduced in the Table of Contents in the HTML output, thus they need to be placed logically.
+**Note** that the order of paths to documents in *FILES.txt* is reproduced in the Table of Contents in the HTML output. Please, place them logically.

 **Note** that you should specify a file tag, not the document name. See @ref OCCT_DM_SECTION_A_1 "Header and hierarchic document structure" section for details.

@@ -180,7 +180,7 @@ For example:
  @subsubsection occt_ocaf_1_1_1 The document and the data framework
@endverbatim

-**Note** that section names can be used for references within the document and in other documents, so it is necessary to use the common prefix indicative of the document name for all section names in the given document. 
+Please, note that section names can be used for references within the document and in other documents, so it is necessary to use the common prefix indicative of the document name for all section names in the given document. 
 For example,  *occt_ocaf* for sections in Open CASCADE Application Framework manual.

 The remaining part of section names in most documents consists only of numbers, for example *1_1*. Actually, the hierarchical structure of the output table of contents is not based on these numbers and is generated automatically. 
--- a/dox/dev_guides/git_guide/git_guide.md
+++ b/dox/dev_guides/git_guide/git_guide.md
@@ -11,17 +11,18 @@ Guide to installing and using Git for OCCT development {#occt_dev_guides__git_gu
  to OCCT developers who are not familiar with this tool 
  and to facilitate the use of the official OCCT Git repository for code contribution to OCCT.

-  It can be useful to learn more about Git concepts and tools from a book a or manual. 
-  Many good books on Git can be found at https://git-scm.com/documentation
+  Reading this document does not exempt from the need to learn Git concepts and tools. 
+  Please consult a book or manual describing Git to get acquainted with this tool. 
+  Many good books on Git can be found at http://git-scm.com/documentation 
  
  For the experienced Git users it can be enough to read sections 1 and 3
   of this document to start working with the repository.
   
-  Familiarize yourselves with the @ref occt_dev_guides__contribution_workflow "Contribution Workflow document"  
+  Please make sure to get familiar with the Contribution Workflow document 
  that describes how Git is used for processing contributions to OCCT.
  
  This and related documents are available at the Resources page 
-  of the OCCT development portal at https://dev.opencascade.org/index.php?q=home/resources.
+  of the OCCT development portal at http://dev.opencascade.org/index.php?q=home/resources. 

@subsection occt_gitguide_1_2 Git URL

@@ -82,7 +83,7 @@ The official repository contains:
@subsection occt_gitguide_1_5 Version of Git

  The repository is tested to work with Git 1.7.6 and above. 
-  Avoid using versions below 1.7.1 as they are known to cause troubles.
+  Please do not use versions below 1.7.1 as they are known to cause troubles.

@section occt_gitguide_2 Installing Tools for Work with Git

@@ -113,7 +114,7 @@ The official repository contains:

@subsubsection occt_gitguide_2_1_2 Installation and configuration of TortoiseGit

-  Download TortoiseGit distributive from https://tortoisegit.org/download/.
+  Download TortoiseGit distributive from http://code.google.com/p/tortoisegit/downloads/list. 
  Launch the installation.

 * Select your SSH client. Choose option 
@@ -238,7 +239,7 @@ The official repository contains:

@subsection occt_gitguide_3_3 Adding public key in your account

-Log in on the portal https://dev.opencascade.org and click on **My account** link to the right. If you have a Contributor status, you will see **SSH keys** tab to the right.
+Log in on the portal http://dev.opencascade.org and click on **My account** link to the right. If you have a Contributor status, you will see **SSH keys** tab to the right. 

 Click on that tab, then click **Add a public key**, and paste the text of the public key (see above sections on how to generate the key) into the text box. 

@@ -249,7 +250,7 @@ Click **Save** to input the key to the system.
  It is typical to use your e-mail address or workstation name for this field; no restrictions are set by the portal.


-  **Note** that some time (5-10 min) is needed for the system 
+  Please note that some time (5-10 min) is needed for the system 
  to update the configuration after the new key is added. 
  After that time, you can try accessing Git.

@@ -496,7 +497,7 @@ To rebase your branch into a single commit, you need to do the following:

  The changes made in the branch can be reviewed without direct access to Git, using GitWeb interface:

-  * Open GitWeb in your web browser: https://git.dev.opencascade.org/gitweb/?p=occt.git
+  * Open GitWeb in your web browser: http://git.dev.opencascade.org/gitweb/?p=occt.git 
  * Locate the branch you want to review among **heads** (click ‘…’ at the bottom of the page to see the full list).
  * Click **log** (or **shortlog**) to see the history of the branch. 
    
--- a/dox/dev_guides/tests/tests.md
+++ b/dox/dev_guides/tests/tests.md
@@ -347,7 +347,7 @@ The test group may contain *parse.rules* file. This file defines patterns used f

 Each line in the file should specify a status (single word), followed by a regular expression delimited by slashes (*/*) that will be matched against lines in the test output log to check if it corresponds to this status.

-The regular expressions should follow <a href="https://www.tcl.tk/man/tcl/TclCmd/re_syntax.htm">Tcl syntax</a>, with a special exception that "\b" is considered as word limit (Perl-style), in addition to "\y" used in Tcl.
+The regular expressions should follow <a href="http://www.tcl.tk/man/tcl/TclCmd/re_syntax.htm">Tcl syntax</a>, with a special exception that "\b" is considered as word limit (Perl-style), in addition to "\y" used in Tcl.

 The rest of the line can contain a comment message, which will be added to the test report when this status is detected.

@@ -622,7 +622,7 @@ The new test created for an unsolved problem should return BAD. The new test cre

@subsection testmanual_3_6 Marking BAD cases

-If the test produces an invalid result at a certain moment then the corresponding bug should be created in the OCCT issue tracker located at https://tracker.dev.opencascade.org, and the problem should be marked as TODO in the test script.
+If the test produces an invalid result at a certain moment then the corresponding bug should be created in the OCCT issue tracker located at http://tracker.dev.opencascade.org, and the problem should be marked as TODO in the test script.

 The following statement should be added to such a test script:
 ~~~~~
@@ -878,18 +878,7 @@ The test grid name is constructed depending on the type of the tested chamfers.
 | dist_angle_complex	| |	Distance from edge and given angle |
 | dist_angle_sequence	| |	Distance from edge and given angle |

-@subsubsection testmanual_5_1_7 de
-
-This group tests reading and writing of CAD data files (iges, step) to and from OCCT.
-
-Test cases check transfer status, shape and attributes against expected reference values.
-
-| Grid	| Commands | Functionality |
-| :---- | :----- | :------- | 
-| iges_1, iges_2, iges_3 | igesbrep, brepiges, ReadIges, WriteIges | IGES tests | 
-| step_1, step_2, step_3, step_4, step_5 | stepread, stepwrite, ReadStep, WriteStep | STEP tests |
-
-@subsubsection testmanual_5_1_8 demo
+@subsubsection testmanual_5_1_7 demo

 This group allows demonstrating how testing cases are created, and testing DRAW commands and the test system as a whole.

@@ -900,7 +889,7 @@ This group allows demonstrating how testing cases are created, and testing DRAW
 | samples	| |	OCCT samples | 


-@subsubsection testmanual_5_1_9 draft
+@subsubsection testmanual_5_1_8 draft

 This group allows testing draft operations.

@@ -911,7 +900,7 @@ DRAW module: MODELING.
 | Angle	| depouille	| Drafts with angle (inclined walls) |


-@subsubsection testmanual_5_1_10 feat
+@subsubsection testmanual_5_1_9 feat

 This group allows testing creation of features on a shape.

@@ -925,7 +914,7 @@ DRAW module: MODELING (package *BRepTest*).
 | featrevol		| | | 
 | featrf		| | |

-@subsubsection testmanual_5_1_11 heal
+@subsubsection testmanual_5_1_10 heal

 This group allows testing the functionality provided by *ShapeHealing* toolkit.

@@ -954,7 +943,7 @@ DRAW module: XSDRAW
 | surface_to_revolution_standard |	DT_ShapeConvertRev	| Convert elementary surfaces to revolutions, simple cases |
 | update_tolerance_locked	| updatetolerance	| Update the tolerance of shape so that it satisfy the rule: toler(face)<=toler(edge)<=toler(vertex) |

-@subsubsection testmanual_5_1_12 mesh
+@subsubsection testmanual_5_1_11 mesh

 This group allows testing shape tessellation (*BRepMesh*) and shading.

@@ -971,7 +960,7 @@ DRAW modules: MODELING (package *MeshTest*), VISUALIZATION (package *ViewerTest*
 | advanced_incmesh_parallel | incmesh | Meshing of complex shapes, parallel mode |
 | standard_incmesh_parallel | incmesh | Meshing of simple shapes, parallel mode |

-@subsubsection testmanual_5_1_13 mkface
+@subsubsection testmanual_5_1_12 mkface

 This group allows testing creation of simple surfaces.

@@ -986,7 +975,7 @@ DRAW module: MODELING (package *BRepTest*)
 | after_revsurf_and_offset | mkface	| | 
 | mkplane | mkplane	| |

-@subsubsection testmanual_5_1_14 nproject
+@subsubsection testmanual_5_1_13 nproject

 This group allows testing normal projection of edges and wires onto a face.

@@ -996,7 +985,7 @@ DRAW module: MODELING (package *BRepTest*)
 | :---- | :----- | :------- | 
 | Base	| nproject	|  |

-@subsubsection testmanual_5_1_15 offset
+@subsubsection testmanual_5_1_14 offset

 This group allows testing offset functionality for curves and surfaces.

@@ -1012,7 +1001,7 @@ DRAW module: MODELING (package *BRepTest*)
 | shape	 | offsetshape	| |
 | wire_closed_outside_0_005, wire_closed_outside_0_025, wire_closed_outside_0_075, wire_closed_inside_0_005, wire_closed_inside_0_025, wire_closed_inside_0_075, wire_unclosed_outside_0_005, wire_unclosed_outside_0_025, wire_unclosed_outside_0_075	|	mkoffset | 2d offset of closed and unclosed planar wires with different offset step and directions of offset ( inside / outside ) |
 	
-@subsubsection testmanual_5_1_16 pipe
+@subsubsection testmanual_5_1_15 pipe

 This group allows testing construction of pipes (sweeping of a contour along profile).

@@ -1022,7 +1011,7 @@ DRAW module: MODELING (package *BRepTest*)
 | :---- | :----- | :------- | 
 | Standard	| pipe	| |

-@subsubsection testmanual_5_1_17 prism
+@subsubsection testmanual_5_1_16 prism

 This group allows testing construction of prisms.

@@ -1032,7 +1021,7 @@ DRAW module: MODELING (package *BRepTest*)
 | :---- | :----- | :------- | 
 | seminf | prism	| |

-@subsubsection testmanual_5_1_18 sewing
+@subsubsection testmanual_5_1_17 sewing

 This group allows testing sewing of faces by connecting edges.

@@ -1044,7 +1033,7 @@ DRAW module: MODELING (package *BRepTest*)
 | tol_1	| sewing | Sewing faces with tolerance 1 |
 | tol_100 | sewing | Sewing faces with tolerance 100 | 

-@subsubsection testmanual_5_1_19 thrusection
+@subsubsection testmanual_5_1_18 thrusection

 This group allows testing construction of shell or a solid passing through a set of sections in a given sequence (loft).

@@ -1053,7 +1042,7 @@ This group allows testing construction of shell or a solid passing through a set
 | solids	| thrusection | Lofting with resulting solid | 
 | not_solids | thrusection	| Lofting with resulting shell or face | 

-@subsubsection testmanual_5_1_20 xcaf
+@subsubsection testmanual_5_1_19 xcaf

 This group allows  testing extended data exchange packages.

--- a/dox/dev_guides/upgrade/upgrade.md
+++ b/dox/dev_guides/upgrade/upgrade.md
@@ -51,7 +51,7 @@ for (Standard_Integer aGr = 1; aGr <= aLen; ++aGr)

 * All occurrences of *Select3D_Projector* in the application code (if any) should be replaced with *Handle(Select3D_Projector)*.
 * The code of inheritors of *Select3D_SensitiveEntity* should be updated if they override <i>Matches()</i> (this is probable, if clipping planes are used).
-* Constructor for *V3d_Plane* has been changed, so the extra argument should be removed if used in the application. It is necessary to add a new plane using method *V3d_Viewer::AddPlane()* if *V3d_Viewer* has been used to manage clipping planes list (this does not affect clipping planes representation). Have a look at the source code for new DRAWEXE *vclipplane* command in *ViewerTest_ObjectsCommands.cxx, VClipPlane* to see how clipping planes can be managed in the application.
+* Constructor for *V3d_Plane* has been changed, so the extra argument should be removed if used in the application. It is necessary to add a new plane using method *V3d_Viewer::AddPlane()* if *V3d_Viewer* has been used to manage clipping planes list (this does not affect clipping planes representation). Please, have a look at the source code for new DRAWEXE *vclipplane* command in *ViewerTest_ObjectsCommands.cxx, VClipPlane* to see how clipping planes can be managed in the application.

@section upgrade_652 Upgrade to OCCT 6.5.2

@@ -112,14 +112,14 @@ Porting of user applications from an earlier OCCT version to version 6.6.0 requi
 It is necessary to introduce the corresponding changes in the applications for which the order of sub-shapes resulting from a Boolean operation is important. It is strongly recommended to use identification methods not relying on the order of sub-shapes (e.g. OCAF naming).
 * If you need to use OCCT on Mac OS X with X11 (without Cocoa), build OCCT with defined pre-processor macro *CSF_MAC_USE_GLX11*. XLib front-end (previously the only way for unofficial OCCT builds on Mac OS X) is now disabled by default on this platform. If your application has no support for Cocoa framework you may build OCCT with XLib front-end adding *MACOSX_USE_GLX* macro to compiler options (you may check the appropriate option in WOK configuration GUI and in CMake configuration). Notice that XQuartz (XLib implementation for Mac OS X) now is an optional component and does not provide a sufficient level of integrity with native (Cocoa-based) applications in the system. It is not possible to build OCCT with both XLib and Cocoa at the same time due to symbols conflict in OpenGL functions. 
 * Animation mode and degeneration presentation mode (simplified presentation for animation) and associated methods have been removed from 3D viewer functionality.
-Correspondingly, the code using methods *SetAnimationModeOn(), SetAnimationModeOff(), AnimationModeIsOn(), AnimationMode(), Tumble(), SetDegenerateModeOn(), SetDegenerateModeOff()* and *DegenerateModeIsOn()* of classes *V3d_View* and *Visual3d_View* will need to be removed or redesigned. Hidden Line Removal presentation was not affected; however, the old code that used methods *V3d_View::SetDegenerateModeOn* or *V3d_View::SetDegenerateModeOff* to control HLR presentation should be updated to use *V3d_View::SetComputedMode* method instead.
+Correspondingly, the code using methods *SetAnimationModeOn(), SetAnimationModeOff(), AnimationModeIsOn(), AnimationMode(), Tumble(), SetDegenerateModeOn(), SetDegenerateModeOff()* and *DegenerateModeIsOn()* of classes *V3d_View* and *Visual3d_View* will need to be removed or redesigned. Please, notice that Hidden Line Removal presentation was not affected; however, the old code that used methods *V3d_View::SetDegenerateModeOn* or *V3d_View::SetDegenerateModeOff* to control HLR presentation should be updated to use *V3d_View::SetComputedMode* method instead.
 * Calls of *Graphic3d_Group::BeginPrimitives()* and *Graphic3d_Group::EndPrimitives()* should be removed from the application code.
 * Application functionality for drawing 2D graphics that was formerly based on *TKV2d* API should be migrated to *TKV3d* API. The following changes are recommended for this migration:
   * A 2D view can be implemented as a *V3d_View* instance belonging to *V3d_Viewer* managed by *AIS_InteractiveContext* instance. To turn *V3d_View* into a 2D view, the necessary view orientation should be set up at the view initialization stage using *V3d_View::SetProj()* method, and view rotation methods simply should not be called.
   * Any 2D graphic entity (formerly represented with *AIS2D_InteractiveObject*) should become a class derived from *AIS_InteractiveObject* base. These entities should be manipulated in a view using *AIS_InteractiveContext* class API.
   * All drawing code should be put into *Compute()* virtual method of a custom interactive object class and use API of *Graphic3d* package. In particular, all geometry should be drawn using class hierarchy derived from *Graphic3d_ArrayOfPrimitives*. Normally, the Z coordinate for 2D geometry should be constant, unless the application implements some advanced 2D drawing techniques like e.g. multiple "Z layers" of drawings.
   * Interactive selection of 2D presentations should be set up inside *ComputeSelection()* virtual method of a custom interactive object class, using standard sensitive entities from *Select3D* package and standard or custom entity owners derived from *SelectMgr_EntityOwner* base.
-Refer to the Visualization User's Guide for further details concerning OCCT 3D visualization and selection classes. See also *Viewer2D* OCCT sample application, which shows how 2D drawing can be implemented using TKV3d API.
+Please refer to the Visualization User's Guide for further details concerning OCCT 3D visualization and selection classes. See also *Viewer2D* OCCT sample application, which shows how 2D drawing can be implemented using TKV3d API.
 * Run-time graphic driver library loading mechanism based on *CSF_GraphicShr* environment variable usage has been replaced by explicit linking against *TKOpenGl* library. The code sample below shows how the graphic driver should be created and initialized in the application code: 
 ~~~~
 // initialize a new viewer with OpenGl graphic driver
@@ -161,10 +161,10 @@ Porting of user applications from an earlier OCCT version to version 6.7.0 requi

@subsection upgrade_670_clipping Object-level clipping and capping algorithm. 

-* It might be necessary to revise and port code related to management of view-level clipping to use *Graphic3d_ClipPlane* instead of *V3d_Plane* instances. Note that *V3d_Plane* class has been preserved -- as previously, it can be used as plane representation. Another approach to represent *Graphic3d_ClipPlane* in a view is to use custom presentable object.
-* The list of arguments of *Select3D_SensitiveEntity::Matches()* method for picking detection has changed. Since now, for correct selection clipping, the implementations should perform a depth clipping check and return (as output argument) minimum depth value found at the detected part of sensitive. Refer to CDL / Doxygen documentation to find descriptive hints and snippets.
+* It might be necessary to revise and port code related to management of view-level clipping to use *Graphic3d_ClipPlane* instead of *V3d_Plane* instances. Please note that *V3d_Plane* class has been preserved -- as previously, it can be used as plane representation. Another approach to represent *Graphic3d_ClipPlane* in a view is to use custom presentable object.
+* The list of arguments of *Select3D_SensitiveEntity::Matches()* method for picking detection has changed. Since now, for correct selection clipping, the implementations should perform a depth clipping check and return (as output argument) minimum depth value found at the detected part of sensitive. Please refer to CDL / Doxygen documentation to find descriptive hints and snippets.
 * *Select3D_SensitiveEntity::ComputeDepth()* abstract method has been removed. Custom implementations should provide depth checks by method *Matches()* instead -- all data required for it is available within a scope of single method.
-* It might be necessary to revise the code of custom sensitive entities and port *Matches()* and *ComputeDepth()* methods to ensure proper selection clipping. Note that obsolete signature of *Matches* is not used anymore by the selector. If your class inheriting *Select3D_SensitiveEntity* redefines the method with old signature the code should not compile as the return type has been changed. This is done to prevent override of removed methods.
+* It might be necessary to revise the code of custom sensitive entities and port *Matches()* and *ComputeDepth()* methods to ensure proper selection clipping. Please note that obsolete signature of *Matches* is not used anymore by the selector. If your class inheriting *Select3D_SensitiveEntity* redefines the method with old signature the code should not compile as the return type has been changed. This is done to prevent override of removed methods.

@subsection upgrade_670_markers Redesign of markers presentation

@@ -210,7 +210,7 @@ If *ViewMapping* and *ViewOrientation* were used directly, this functionality ha

 The current perspective model is not fully backward compatible, so the old perspective-related functionality needs to be reviewed.

-Revise application-specific custom presentations to provide a proper bounding box, otherwise the object might become erroneously clipped by automatic *ZFit* or frustum culling algorithms enabled by default.
+Please revise application-specific custom presentations to provide proper bounding box. Otherwise object might become erroneously clipped by automatic *ZFit* or frustum culling algorithms enabled by default.

@subsection upgrade_680_connected_objects Redesign of Connected Interactive Objects

@@ -439,7 +439,7 @@ class TColStd_Array1OfReal; -> #include <TColStd_Array1OfReal.hxx>
 ~~~~~
 Handle_Class -> Handle(Class)
 ~~~~~
-  This change is not applied if the source or header file is recognized as containing the definition of Qt class with signals or slots, to avoid possible compilation errors of MOC files caused by inability of MOC to recognize macros (see https://doc.qt.io/qt-4.8/signalsandslots.html).
+  This change is not applied if the source or header file is recognized as containing the definition of Qt class with signals or slots, to avoid possible compilation errors of MOC files caused by inability of MOC to recognize macros (see http://doc.qt.io/qt-4.8/signalsandslots.html).
  The file is considered as defining a Qt object if it contains strings *Q_OBJECT* and either *slots:* or *signals:*. 

 4. Removes forward declarations of classes with names <i>Handle(C)</i> or *Handle_C*, replacing them either by forward declaration of its argument class, or (for files defining Qt objects) <i>\#include</i> statement for a header with the name of the argument class and extension .hxx:
@@ -736,9 +736,9 @@ If you like to preserve the compatibility of your application code with OCCT ver
 If your application is essentially based on CDL, and you need to upgrade it to OCCT 7.0, you will very likely need to convert your application code to non-CDL form.
 This is a non-trivial effort; the required actions would depend strongly on the structure of the code and used CDL features.

-The upgrade script and sources of a specialized WOK version used for OCCT code upgrade can be found in WOK Git repository in branch [CR0_700_2](https://git.dev.opencascade.org/gitweb/?p=occt-wok.git;a=log;h=refs/heads/CR0_700_2).
+The upgrade script and sources of a specialized WOK version used for OCCT code upgrade can be found in WOK Git repository in branch [CR0_700_2](http://git.dev.opencascade.org/gitweb/?p=occt-wok.git;a=log;h=refs/heads/CR0_700_2).

-[Contact us](https://www.opencascade.com/contact/) if you need more help.
+[Contact us](http://www.opencascade.com/contact/) if you need more help.

@subsection upgrade_occt700_bspline Separation of BSpline cache

@@ -987,11 +987,11 @@ The applications that use *gp_Quaternion* to convert Yaw-Pitch-Roll angles (or o

@subsection upgrade_zoom_persistent_selection Zoom Persistent Selection

-Zoom persistent selection introduces a new structure *Graphic3d_TransformPers* to transform persistence methods and parameters and a new class *Graphic3d_WorldViewProjState* to refer to the camera transformation state. You might need to update your code to deal with the new classes if you were using the related features. Keep in mind the following: 
+Zoom persistent selection introduces a new structure *Graphic3d_TransformPers* to transform persistence methods and parameters and a new class *Graphic3d_WorldViewProjState* to refer to the camera transformation state. You might need to update your code to deal with the new classes if you were using the related features. Please, keep in mind the following: 
 * *Graphic3d_Camera::ModelViewState* has been renamed to *Graphic3d_Camera::WorldViewState*.
 * Transformation matrix utilities from *OpenGl_Utils* namespace have been moved to *Graphic3d_TransformUtils* and *Graphic3d_TransformUtils.hxx* header respectively.
 * Matrix stack utilities from *OpenGl_Utils* namespace have been moved to *OpenGl_MatrixStack* class and *OpenGl_MatrixStack.hxx* header respectively.
-* *OpenGl_View* methods *Begin/EndTransformPersistence* have been removed. Use *Graphic3d_TransformPers::Apply()* instead to apply persistence to perspective and world-view projection matrices.
+* *OpenGl_View* methods *Begin/EndTransformPersistence* have been removed. Please, use *Graphic3d_TransformPers::Apply()* instead to apply persistence to perspective and world-view projection matrices.

@subsection upgrade_occt700_correction_of_texture Texture mapping of objects

@@ -1091,7 +1091,7 @@ The following environment variables have become redundant:

 * *CSF_UnitsLexicon* and *CSF_UnitsDefinition* are no more used.  Units definition (*UnitsAPI/Lexi_Expr.dat* and *UnitsAPI/Units.dat*) is now embedded into source code.
 * *CSF_XSMessage* and *CSF_XHMessage* are now optional.
-  English messages (XSMessage/\*XSTEP.us* and SHMessage/\*SHAPE.us*) are now embedded into source code
+  English messages (XSMessage/*XSTEP.us* and SHMessage/*SHAPE.us*) are now embedded into source code
  and automatically loaded when environment variables are not set.
 * *CSF_ShadersDirectory* is not required any more, though it still can be used to load custom shaders.
  Mandatory GLSL resources are now embedded into source code.
@@ -1124,7 +1124,7 @@ The following classes have been changed:
 * *BRepTools_Modifier* class now has two modes of work. They are defined by the boolean parameter *MutableInput*, which is turned off by default. This means that the algorithm always makes a copy of a sub-shape (e.g. vertex) if its tolerance is to be increased in the output shape. The old mode corresponds to *MutableInput* turned on. This change may impact an application if it implements a class derived from *BRepTools_Modifier*.
 * The second parameter *theIsOuterWire* of method *ShapeAnalysis_Wire::CheckSmallArea* has been removed.
 * In class *GeomPlate_CurveConstraint*, two constructors taking boundary curves of different types have been replaced with one constructor taking the curve of an abstract type.
-* The last optional argument *RemoveInvalidFaces* has been removed from the constructor of class  *BRepOffset_MakeOffset* and method *Initialize*.
+*  The last optional argument *RemoveInvalidFaces* has been removed from the constructor of class  *BRepOffset_MakeOffset* and method *Initialize*.
 * The public method *BOPDS_DS::VerticesOnIn* has been renamed into *SubShapesOnIn* and the new output parameter *theCommonPB* has been added.

@section upgrade_occt720 Upgrade to OCCT 7.2.0
@@ -1584,6 +1584,10 @@ To use the custom printer in OCAF, it can be either added to default messenger o
@subsection upgrade_740_BRepPrimAPI_MakeRevol Changes in BRepPrimAPI_MakeRevol algorithm
 Previously the algorithm could create a shape with the same degenerated edge shared between some faces. Now it is prevented. The algorithm creates the different copy of this edge for each face. The method *Generated(...)* has been changed in order to apply restriction to the input shape: input shape can be only of type VERTEX, EDGE, FACE or SOLID. For input shape of another type the method always returns empty list.

+@subsection upgrade_740_extremaalgo Changes in behavior of Extrema algorithms
+
+Since OCCT 7.4.0 exception is thrown on the attempt of taking points in case of infinite number of solution (IsParallel status). Request of distances is available as before. Method NbExt() always returns 1 in such cases. 
+
@subsection upgrade_740_removed Removed features
 * The following methods of the class *BRepAlgoAPI_BooleanOperation* have been removed as obsolete or replaced:
  - *BuilderCanWork* can be replaced with *IsDone* or *HasErrors* method.
@@ -1592,400 +1596,4 @@ Previously the algorithm could create a shape with the same degenerated edge sha
 * The method *ImagesResult* of the class *BOPAlgo_BuilderShape* has been removed as unused. The functionality of this method can be completely replaced by the history methods *Modified* and *IsDeleted*.
 * The method *TrackHistory* of the classes *BOPAlgo_RemoveFeatures* and *BRepAlgoAPI_Defeaturing* has been renamed to *SetToFillHistory*.
 * The method *GetHistory* of the class *BRepAlgoAPI_Defeaturing* has been renamed to *History*.
-* The classes *BRepAlgo_BooleanOperations* and *BRepAlgo_DSAccess* have been removed as obsolete. Please use the BRepAlgoAPI_* classes to perform Boolean operations.
-* *BRepAlgo_DataMapOfShapeBoolean* has been removed as unused.
-* *BRepAlgo_DataMapOfShapeInterference* has been removed as unused.
-* *BRepAlgo_EdgeConnector* has been removed as unused.
-* *BRepAlgo_SequenceOfSequenceOfInteger* has been removed as unused.

-@subsection upgrade_740_localcontext Local Context removal
-
-Previously deprecated Local Context functionality has been removed from AIS package,
-so that related methods have been removed from AIS_InteractiveContext interface:
-*HasOpenedContext()*, *HighestIndex()*, *LocalContext()*, *LocalSelector()*, *OpenLocalContext()*, *CloseLocalContext()*,
-*IndexOfCurrentLocal()*, *CloseAllContexts()*, *ResetOriginalState()*, *ClearLocalContext()*, *UseDisplayedObjects()*, *NotUseDisplayedObjects()*,
-*SetShapeDecomposition()*, *SetTemporaryAttributes()*, *ActivateStandardMode()*, *DeactivateStandardMode()*, *KeepTemporary()*,
-*SubIntensityOn()*, *SubIntensityOff()*, *ActivatedStandardModes()*, *IsInLocal()*, *AddOrRemoveSelected()* taking TopoDS_Shape.
-
-A set of deprecated methods previously related to Local Context and now redirecting to other methods has been preserved to simplify porting; they will be removed in next release.
-
-@subsection upgrade_740_geomconvert Changes in behavior of Convert algorithms
-
-Now methods *GeomConvert::ConcatG1*, *GeomConvert::ConcatC1*, *Geom2dConvert::ConcatG1*, *Geom2dConvert::ConcatC1* modify the input argument representing the flag of closedness.
-
-@subsection upgrade_740_selection Changes in selection API and picked point calculation algorithm.
-
-*SelectBasics_PickResult* structure has been extended, so that it now defines a 3D point on the detected entity in addition to Depth value along picking ray.
-*SelectMgr_SelectingVolumeManager::Overlap()* methods have been corrected to fill in *SelectBasics_PickResult* structure (depth and 3D point) instead of only depth value, so that custom *Select3D_SensitiveEntity* implementation should be updated accordingly (including *Select3D_SensitiveSet* subclasses).
-
-@subsection upgrade_740_ocafpersistence Document format version management improvement.
-
-Previously Document format version restored by *DocumentRetrievalDriver* was propagated using static methods of the corresponding units (like *MDataStd* or *MNaming*) to static variables of these units and after that became accessible to Drivers of these units.
-Now Document format version is available to drivers via *RelocationTable*. The Relocation table now keeps *HeaderData* of the document and a format version can be extracted in the following way: *theRelocTable.GetHeaderData()->StorageVersion()*.
-Obsolete methods: *static void SetDocumentVersion (const Standard_Integer DocVersion)* and *static Standard_Integer DocumentVersion()* have been removed from *BinMDataStd*, *BinMNaming*, *XmlMDataStd* and *XmlMNaming*.
-
-@subsection upgrade_740_changed_api_of_brepmesh BRepMesh - revision of the data model
-
-The entire structure of *BRepMesh* component has been revised and separated into several logically connected classes.
-
-In new version, deflection is controlled more accurately, this may be necessary to tune parameters of call of the BRepMesh algorithm on the application side to obtain the same quality of presentation and/or performance as before.
-
-*BRepMesh_FastDiscret* and *BRepMesh_FastDiscretFace* classes have been removed.
-
-The following changes have been introduced in the API of *BRepMesh_IncrementalMesh*, component entry point:
-* Due to revised logic, *adaptiveMin* parameter of the constructor has been removed as meaningless;
-* *BRepMesh_FastDiscret::Parameters* has been moved to a separate structure called *IMeshTools_Parameters*; the signatures of related methods have been changed correspondingly.
-
-* Interface of *BRepMesh_Delaun* class has been changed.
-
-Example of usage:
-Case 1 (explicit parameters):
-~~~~
-#include <IMeshData_Status.hxx>
-#include <IMeshTools_Parameters.hxx>
-#include <BRepMesh_IncrementalMesh.hxx>
-
-Standard_Boolean meshing_explicit_parameters()
-{
-  BRepMesh_IncrementalMesh aMesher (aShape, 0.1, Standard_False, 0.5, Standard_True);
-  const Standard_Integer aStatus = aMesher.GetStatusFlags();
-  return !aStatus;
-}
-
-Standard_Boolean meshing_new()
-{
-  IMeshTools_Parameters aMeshParams;
-  aMeshParams.Deflection               = 0.1;
-  aMeshParams.Angle                    = 0.5;
-  aMeshParams.Relative                 = Standard_False;
-  aMeshParams.InParallel               = Standard_True;
-  aMeshParams.MinSize                  = Precision::Confusion();
-  aMeshParams.InternalVerticesMode     = Standard_True;
-  aMeshParams.ControlSurfaceDeflection = Standard_True;
-
-  BRepMesh_IncrementalMesh aMesher (aShape, aMeshParams);
-  const Standard_Integer aStatus = aMesher.GetStatusFlags();
-  return !aStatus;
-}
-~~~~
-
-@subsection upgrade_740_chamfer Changes in API of Chamfer algorithms
-
-Some public methods of the class BRepFilletAPI_MakeChamfer are released from excess arguments:
- method Add for symmetric chamfer now takes only 2 arguments: distance and edge;
- method GetDistAngle now takes only 3 arguments: index of contour, distance and angle.
-
-@subsection upgrade_740_aspects Aspects unification
-
-Fill Area, Line and Marker aspects (classes *Graphic3d_AspectFillArea3d*, *Graphic3d_AspectLine3d*, *Graphic3d_AspectMarker3d* and *Graphic3d_AspectText3d*)
-have been merged into new class *Graphic3d_Aspects* providing a single state for rendering primitives of any type.
-The old per-primitive type aspect classes have been preserved as sub-classes of *Graphic3d_Aspects* with default values close to the previous behavior.
-All aspects except Graphic3d_AspectFillArea3d define Graphic3d_TOSM_UNLIT shading model.
-
-The previous approach with dedicated aspects per primitive type was handy in simplified case, but lead to confusion otherwise.
-In fact, drawing points or lines with lighting applied is a valid use case, but only *Graphic3d_AspectFillArea3d* previously defined necessary material properties.
-
-As aspects for different primitive types have been merged, Graphic3d_Group does no more provide per-type aspect properties.
-Existing code relying on old behavior and putting interleaved per-type aspects into single Graphic3d_Group should be updated.
-For example, the following pseudo-code will not work anymore, because all *SetGroupPrimitivesAspect* calls will setup the same property:
-~~~~
-Handle(Graphic3d_Group) aGroup = thePrs->NewGroup();
-aGroup->SetGroupPrimitivesAspect (myDrawer->ShadingAspect()->Aspect());
-aGroup->SetGroupPrimitivesAspect (myDrawer->LineAspect()->Aspect());    //!< overrides previous aspect
-
-Handle(Graphic3d_ArrayOfSegments) aLines = new Graphic3d_ArrayOfSegments (2);
-Handle(Graphic3d_ArrayOfTriangles) aTris = new Graphic3d_ArrayOfTriangles (3);
-aGroup->AddPrimitiveArray (aLines); //!< both arrays will use the same aspect
-aGroup->AddPrimitiveArray (aTris);
-~~~~
-
-To solve the problem, the code should be modified to either put primitives into dedicated groups (preferred approach), or using *SetPrimitivesAspect* in proper order:
-~~~~
-Handle(Graphic3d_Group) aGroup = thePrs->NewGroup();
-
-aGroup->SetGroupPrimitivesAspect (myDrawer->ShadingAspect()->Aspect());
-Handle(Graphic3d_ArrayOfTriangles) aTris = new Graphic3d_ArrayOfTriangles (3);
-aGroup->AddPrimitiveArray (aTris);
-
-Handle(Graphic3d_ArrayOfSegments) aLines = new Graphic3d_ArrayOfSegments (2);
-aGroup->SetPrimitivesAspect (myDrawer->LineAspect()->Aspect()); //!< next array will use the new aspect
-aGroup->AddPrimitiveArray (aLines);
-~~~~
-
-@subsection upgrade_740_materials Material definition
-
-Decomposition of Ambient, Diffuse, Specular and Emissive properties has been eliminated within *Graphic3d_MaterialAspect* definition.
-As result, the following methods of *Graphic3d_MaterialAspect* class have been removed: SetReflectionMode(), SetReflectionModeOn(), Ambient(), Diffuse(), Emissive(), Specular(), SetAmbient(), SetDiffuse(), SetSpecular(), SetEmissive().
-
-Previously, computation of final value required the following code:
-~~~~
-Graphic3d_MaterialAspect theMaterial; Quantity_Color theInteriorColor;
-Graphic3d_Vec3 anAmbient (0.0f);
-if (theMaterial.ReflectionMode (Graphic3d_TOR_AMBIENT))
-{
-  anAmbient = theMaterial.MaterialType (Graphic3d_MATERIAL_ASPECT)
-            ? (Graphic3d_Vec3 )theInteriorColor           * theMaterial.Ambient()
-            : (Graphic3d_Vec3 )theMaterial.AmbientColor() * theMaterial.Ambient();
-}
-~~~~
-
-New code looks like this:
-~~~~
-Graphic3d_MaterialAspect theMaterial; Quantity_Color theInteriorColor;
-Graphic3d_Vec3 anAmbient = theMaterial.AmbientColor();
-if (theMaterial.MaterialType (Graphic3d_MATERIAL_ASPECT)) { anAmbient *= (Graphic3d_Vec3 )theInteriorColor; }
-~~~~
-
-Existing code should be updated to:
- Replace Graphic3d_MaterialAspect::SetReflectionModeOff() with setting black color; SetReflectionModeOn() calls can be simply removed.
-  R.g. theMaterial.SetAmbientColor(Quantity_NOC_BLACK).
- Replace Graphic3d_MaterialAspect::Ambient(), SetAmbient(), Diffuse(), SetDiffuse(), Specular(), SetSpecular(), Emissive(), SetEmissive() with methods working with pre-multiplied color.
-  E.g. theMaterial.SetAmbientColor(Graphic3d_Vec3 (1.0f, 0.0f, 0.0f) * 0.2f).
- Avoid using Graphic3d_MaterialAspect::Color() and SetColor() with non-physical materials (Graphic3d_MATERIAL_ASPECT).
-  These materials do not include color definition, because it is taken from Graphic3d_Aspects::InteriorColor() - this has not been changed.
-  However, previously it was possible storing the color with SetColor() call and then fetching it with Color() by application code (the rendering ignored this value);
-  now SetColor() explicitly ignores call for Graphic3d_MATERIAL_ASPECT materials and Color() returns DiffuseColor() multiplication coefficients.
-
-@subsection upgrade_740_text Changes in Graphic3d_Text and OpenGl_Text API
-
-Parameters of *Text* in *Graphic3d_Group* are moved into a new *Graphic3d_Text* class. *AddText* of *Graphic3d_Group* should be used instead of the previous *Text*.
-
-The previous code:
-~~~~
-Standard_Real x, y, z;
-theAttachmentPoint.Coord(x,y,z);
-theGroup->Text (theText,
-                Graphic3d_Vertex(x,y,z),
-                theAspect->Height(),
-                theAspect->Angle(),
-                theAspect->Orientation(),
-                theAspect->HorizontalJustification(),
-                theAspect->VerticalJustification());
-~~~~
-should be replaced by the new code:
-~~~~
-Handle(Graphic3d_Text) aText = new Graphic3d_Text (theAspect->Height());
-aText->SetText (theText.ToExtString());
-aText->SetPosition (theAttachmentPoint);
-aText->SetHorizontalAlignment (theAspect->HorizontalJustification());
-aText->SetVerticalAlignment (theAspect->VerticalJustification());
-theGroup->AddText (aText);
-~~~~
-
-*OpenGl_Text* contains *Graphic3d_Text* field.
-
-*OpenGl_TextParam* struct is removed. Constructor and *Init* of *OpenGl_Text* with *OpenGl_TextParam* are also removed.
-Instead of using them, change *OpenGl_Text*.
-
-Please, note, that after modifying *OpenGl_Text*, *Reset* of *OpenGl_Text* should be called.
-
-*FormatParams* of *OpenGl_Text* is replaced by *Text*.
-
-@subsection upgrade_740_prsupdate Presentation invalidation
-
-Historically AIS_InteractiveObject provided two independent mechanisms invalidating presentation (asking presentation manager to recompute specific display mode or all modes):
-
-1. *AIS_InteractiveObject::SetToUpdate()*, marking existing presentation for update.
-   This is main invalidation API, which is expected to be followed by *AIS_InteractiveContext::Update()* call.
-2. *AIS_InteractiveObject::myToRecomputeModes* + *myRecomputeEveryPrs*.
-   This is auxiliary invalidation API, used internally by AIS_InteractiveContext::SetColor()/UnsetColor() and similar modification methods.
-
-The latter one has been removed to avoid confusion and unexpected behavior.
-In addition, two methods *AIS_InteractiveObject::Update()* have been deprecated in favor of new *AIS_InteractiveObject::UpdatePresentations()* recomputing only invalidated presentations.
-
-Custom presentations implementing interface methods *AIS_InteractiveObject::SetColor()* and others should be revised to use *AIS_InteractiveObject::SetToUpdate()*
-or updating presentation without recomputation (see *AIS_InteractiveObject::SynchronizeAspects()* and *AIS_InteractiveObject::replaceAspects()*).
-
-@subsection upgrade_740_interiorstyles Interior styles
-
-* *Aspect_IS_HOLLOW* is now an alias to *Aspect_IS_EMPTY* and does not implicitly enables drawing mesh edges anymore.
-  Specify Graphic3d_AspectFillArea3d::SetDrawEdges(true) with Graphic3d_AspectFillArea3d::SetInteriorStyle(Aspect_IS_EMPTY) to get previous behavior of Aspect_IS_HOLLOW style.
-* *Aspect_IS_HIDDENLINE* does not implicitly enables drawing mesh edges anymore.
-  Specify Graphic3d_AspectFillArea3d::SetDrawEdges(true) with Graphic3d_AspectFillArea3d::SetInteriorStyle(Aspect_IS_HIDDENLINE) to get previous behavior of Aspect_IS_HIDDENLINE style.
-
-@subsection upgrade_740_modedprs PrsMgr and SelectMgr hierarchy clean up
-
-Proxy classes *Prs3d_Presentation*, *PrsMgr_ModedPresentation* and *PrsMgr_Prs* have been removed.
-Code iterating through the list of low-level structures AIS_InteractiveObject::Presentations() should be updated to access PrsMgr_Presentation directly.
-Forward declarations of *Prs3d_Presentation* should be corrected, since it is now a typedef to *Graphic3d_Structure*.
-
-Proxy classes *SelectBasics_SensitiveEntity* and *SelectBasics_EntityOwner* have been removed - *Select3D_SensitiveEntity* and *SelectMgr_EntityOwner* should be now used directly instead.
-
-@subsection upgrade_740_offset Polygon offset defaults
-
-*Graphic3d_PolygonOffset* default constructor has been corrected to define Units=1 instead of Units=0.
-Default polygon offset settings Mode=Aspect_POM_Fill + Factor=1 + Units=1 are intended to push triangulation
-(Shaded presentation) a little bit behind of lines (Wireframe and Face Edges)
-for reducing z-fighting effect of Shaded+Wireframe combination.
-The change in defaults (Units changed from 0 to 1) is intended to cover scenario when camera direction is perpendicular to model plane (like 2D view).
-
-Application observing unexpected visual difference on this change should consider customizing this property within AIS_InteractiveContext default attributes
-or on per-presentation basis via *Graphic3d_Aspects::SetPolygonOffset()* methods.
-
-@subsection upgrade_740_zlayer Adding ZLayers in given position
-
-Interface of insertion ZLayer in the viewer has been improved with ability to insert new layer before or after existing one.
-Previously undocumented behavior of *V3d_Viewer::AddZlayer()* method has been corrected to insert new layer before *Graphic3d_ZLayerId_Top*.
-Applications might need revising their custom layers creation code and specify precisely their order with new methods *V3d_Viewer::InsertLayerBefore()* and *V3d_Viewer::InsertLayerAfter()*.
-
-@subsection upgrade_740_enum_changed Modified enumerations
-
-Applications using integer values of the following enumerations in persistence
-should be corrected as these enumerations have been modified:
-
-| Name |
-| :----- |
-| AIS_TypeOfAttribute |
-| Aspect_InteriorStyle |
-| Font_FontAspect |
-
-@subsection upgrade_740_geproj Custom defines within env.bat
-
-*env.bat* produced by Visual Studio project generator *genproj.bat* has been modified so that *%CSF_DEFINES%* variable is reset to initial state.
-Custom building environment relying on old behavior and setting extra macros within *%CSF_DEFINES%* before env.bat should be updated
-to either modify custom.bat or setup new variable *%CSF_DEFINES_EXTRA%* instead.
-
-@subsection upgrade_740_BVH_in_BOP Switching Boolean Operations algorithm to use BVH tree instead of UB tree
-
-Since OCCT 7.4.0 Boolean Operations algorithm uses BVH tree instead of UBTree to find the pairs of entities with interfering bounding boxes.
-The following API changes have been made:
-* BOPTools_BoxBndTree and BOPTools_BoxBndTreeSelector have been removed. Use the BOPTools_BoxTree and BOPTools_BoxTreeSelector instead.
-* BOPTools_BoxSelector::SetBox() method now accepts the BVH_Box instead of Bnd_Box.
-* Methods BOPTools_BoxSelector::Reject and BOPTools_BoxSelector::Accept have been removed as unused.
-* The RunParallel flag has been removed from the list of parameters of BOPAlgo_Tools::IntersectVertices method. Earlier, it performed selection from the UB tree in parallel mode. Now all interfering pairs are found in one pass, using pair traverse of the same BVH tree.
-
-@subsection upgrade_740_stdnamespace Standard_Stream.hxx no more has "using std::" statements
-*Standard_Stream.hxx* header, commonly included by other OCCT header files, does no more add entities from *std namespace* related to streams (like *std::cout*, *std::istream* and others) into global namespace.
-The application code relying on this matter should be updated to either specify std namespace explicitly (like std::cout) or add "using std::" statements locally.
-
-@section upgrade_occt750 Upgrade to OCCT 7.5.0
-
-@subsection upgrade_750_srgb_color RGB color definition
-
-OCCT 3D Viewer has been improved to properly perform lighting using in linear RGB color space and then convert result into non-linear gamma-shifted sRGB color space before displaying on display.
-This change affects texture mapping, material definition and color definition.
-
-Previously *Quantity_Color* definition was provided with unspecified RGB color space.
-In practice, mixed color spaces have been actually used, with non-linear sRGB prevailing in general.
-Since OCCT 7.5.0, *Quantity_Color* now specifies that components are defined in linear RGB color space.
-
-This change affects following parts:
-* Standard colors defined by *Quantity_NameOfColor* enumeration have been converted into linear RGB values within Quantity_Color construction.
-* Application may use new enumeration value *Quantity_TOC_sRGB* for passing/fetching colors in sRGB color space,
-  which can be useful for interoperation with color picking widgets (returning 8-bit integer values within [0..255] range)
-  or for porting colors constants within old application code without manual conversion.
-* *Graphic3d_MaterialAspect* color components are now expected in linear RGB color space,
-  and standard OCCT materials within *Graphic3d_NameOfMaterial* enumeration have been updated accordingly.
-* Texture mapping now handles new *Graphic3d_TextureRoot::IsColorMap()* for interpreting content in linear RGB or sRGB color space.
-  It is responsibility of user specifying this flag correctly. The flag value is TRUE by default.
-* Method *Image_PixMap::PixelColor()* has been extended with a new Boolean flag for performing linearization of non-linear sRGB.
-  This flag is FALSE by default; application should consider passing TRUE instead for further handling *Quantity_Color* properly as linear RGB values.
-
-@subsection upgrade_750_aspectwindow Aspect_Window interface change
-
-Unexpected const-ness of Aspect_Window::DoResize() method has been removed, so that application classes implementing this interface should be updated accordingly.
-
-@subsection upgrade_750_rename Renaming of types
-
-Enumeration BRepOffset_Type is renamed to ChFiDS_TypeOfConcavity.
-
-@subsection upgrade_750_tkv3d TKV3d/TKService toolkits changes
-
-The following changes could be highlighted while porting:
-* *Prs3d::GetDeflection()* has been moved to *StdPrs_ToolTriangulatedShape::GetDeflection()*.
-* *Prs3d_ShapeTool* has been moved to *StdPrs_ShapeTool*.
-* *StdSelect_ViewerSelector3d* has been moved to *SelectMgr_ViewerSelector3d*.
-* *Font_BRepFont* has been moved to *StdPrs_BRepFont*.
-* Visualization classes now use *TopLoc_Datum3D* (from *TKMath*) instead of *Geom_Transformation* (from *TKG3d*) as smart pointer to *gp_Trsf*.
-  This is rather an internal change, but some applications might need to be updated.
-
-@subsection upgrade_750_hlrangle Prs3d_Drawer deviation angle
-
-Properties Prs3d_Drawer::HLRAngle() and Prs3d_Drawer::HLRDeviationCoefficient() have been removed from classes *Prs3d_Drawer*, *AIS_Shape* and *AIS_InteractiveContext*.
-Prs3d_Drawer::DeviationAngle() should be now used instead of Prs3d_Drawer::HLRAngle() and Prs3d_Drawer::DeviationCoefficient() instead of Prs3d_Drawer::HLRDeviationCoefficient().
-The default value of Prs3d_Drawer::DeviationAngle() property has been changed from 12 to 20 degrees to match removed Prs3d_Drawer::HLRAngle(), previously used as input for triangulation algorithm.
-
-@subsection upgrade_750_hlrprs Changes in HLR presentation API
-
-Methods computing HLR presentation within *PrsMgr_PresentableObject::Compute()* have been renamed to *PrsMgr_PresentableObject::computeHLR()*
-and now accept *Graphic3d_Camera* object instead of removed *Prs3d_Projector*.
-
-@subsection upgrade_750_dimensions Dimension and Relation presentations moved from AIS to PrsDim
-
-Presentation classes displaying Dimensions and Relations have been moved from *AIS* package to *PrsDim*.
-Corresponding classes should be renamed in application code (like *AIS_LengthDimension* -> *PrsDim_LengthDimension*).
-
-@subsection upgrade_750_sensitiveEntity Select3D_SensitiveEntity interface change
-
-The method Select3D_SensitiveEntity::NbSubElements() has been changed to be constant. Select3D_SensitiveEntity subclasses at application level should be updated accordingly.
-
-
-@subsection upgrade_750_Booleans Changes in Boolean operations algorithm
-
-* TreatCompound method has been moved from *BOPAlgo_Tools* to *BOPTools_AlgoTools*. Additionally, the map parameter became optional:
-~~~~
-void BOPTools_AlgoTools::TreatCompound (const TopoDS_Shape& theS,
-                                        TopTools_ListOfShape& theLS,
-                                        TopTools_MapOfShape* theMap = NULL);
-~~~~
-
-@subsection upgrade_750_Adaptor2d_OffsetCurve  Offset direction change
-
-Offset direction, which used in class Adaptor2d_OffsetCurve for evaluating values and derivatives of offset curve is unified for offset direction used in class Geom2d_OffsetCurve: now offset direction points to outer ("right") side of base curve instead of the previously used inner ("left") side. Old usage of class in any application should be changed something like that:
-
-Adaptor2d_OffsetCurve aOC(BaseCurve, Offset) --> Adaptor2d_OffsetCurve aOC(BaseCurve, -Offset)
-
-@subsection upgrade_750_message_messenger Message_Messenger interface change
-
-Operators << with left argument *Handle(Message_Messenger)*, used to output messages with
-a stream-like interface,  have been removed.
-This functionality is provided now by separate class *Message_Messenger::StreamBuffer*.
-That class contains a stringstream buffer which can be filled using standard stream
-operators. The string is sent to a messenger on destruction of the buffer object,
-call of its method Flush(), or using operator << with one of ostream manipulators 
-(*std::endl, std::flush, std::ends*). Manipulator *Message_EndLine* has been removed,
-*std::endl* should be used instead.
-
-New methods *SendFail(), SendAlarm(), SendWarning(), SendInfo()*, and *SendTrace()* are
-provided in both *Message_Messenger* class and as static functions in *Message* package
-(short-cuts to default messenger), returning buffer object for the output of
-corresponding type of the message.
-
-The code that used operator << for messenger, should be ported as follows.
-
-Before the change:
-~~~~~
-  Handle(Message_Messenger) theMessenger = ...;
-  theMessenger << "Value = " << anInteger << Message_EndLine;
-~~~~~
-
-After the change, single-line variant:
-~~~~~
-  Handle(Message_Messenger) theMessenger = ...;
-  theMessenger->SendInfo() << "Value = " << anInteger << std::endl;
-~~~~~
-
-After the change, extended variant:
-~~~~~
-  Handle(Message_Messenger) theMessenger = ...;
-  Message_Messenger::StreamBuffer aSender = theMessenger->SendInfo();
-  aSender << "Array: [ ";
-  for (int i = 0; i < aNb; ++i) { aSender << anArray[i] << " "; }
-  aSender << "]" << std::endl; // aSender can be used further for other messages
-~~~~~
-
-@subsection upgrade_750_message_printer Message_Printer interface change
-
-Previously, sub-classes of *Message_Printer* have to provide a triplet of *Message_Printer::Send()* methods accepting different string representations: TCollection_AsciiString, TCollection_ExtendedString and Standard_CString.
-*Message_Printer* interface has been changed, so that sub-classes now have to implement only single method *Message_Printer::send()* accepting TCollection_AsciiString argument and having no Endl flag, which has been removed.
-Old three Message_Printer::Send() methods remain defined virtual with unused last argument and redirecting to new send() method by default.
-
-@subsection upgrade_750_prd3d_root Prs3d_Root deprecation
-
-Redundant class Prs3d_Root has been marked as deprecated - Prs3d_Presentation::NewGroup() should be called directly.
-
-@subsection upgrade_750_draw_hotkeys Draw Harness hotkeys
-
-Draw Harness hotkeys **W** (Wireframe) and **S** (Shaded) have been re-mapped to **Ctrl+W** and **Ctrl+S**.
-Hotkey **A** has been remapped to **Backspace**.
-Hotkeys WASD and Arrays are now mapped for walk-through navigation in 3D Viewer.
--- a/dox/dev_guides/visualization/pbr_math.md
+++ b/dox/dev_guides/visualization/pbr_math.md
@@ -1,777 +0,0 @@
-PBR math (rasterization) {#occt_dev_guides__pbr_math}
-========================
-@tableofcontents
-
-# Preface
-
-**Empirical** illumination models like **Phong reflection model** have been used in real-time graphics for a long time due to their simplicity, convincing look and affordable performance.
-Before programmable pipeline has been introduced, graphics cards implemented Gouraud shading as part of fixed-function Transformation & Lighting (T&L) hardware blocks.
-Nowadays, however, numerous trade-offs of this simplicity (like lighting partially baked into object material properties and others) pushed developers to **Physically-Based Rendering** (**PBR**) illumination models.
-
-PBR models try to fit surface shading formulas into constrains of physical laws of light propagation / absorption / reflection - hence, called "physically-based".
-There are two main categories of PBR illumination:
-
- 1. Non-real-time renderer (cinematic).
- 2. Real-time renderer.
-
-The main objective of cinematic renderer is uncompromised quality, so that it relies on ray-tracing (path-tracing) rendering pipeline.
-Although performance of current graphics hardware does not make it possible using computationally-intensive path-tracing renderer in real-time graphics, it can be used in interactive fashion.
-
-"Physically-based" does not necessarily mean physically-correct/precise.
-The main objective of real-time PBR renderer is to be fast enough even on low-end graphics hardware.
-So that in contrast, it hardly relies on rasterization rendering pipeline, various approximations and tricks making it applicable in real-time, while looking good enough and preserving some physical properties.
-
-OCCT 3D Viewer provides both kinds of PBR renderers, and although they share some details in common, this article is devoted to real-time PBR metallic-roughness illumination model.
-This article describes the math underneath PBR shading in OCCT 3D Viewer and its GLSL programs.
-However, this article does not clarifies related high-level APIs nor PBR material creation pipelines, as this is another topic.
-
-# Notation
-
-|  |  |  |
-|-:|:-|:-|
-| \f$n\f$   | normal (on surface) | \f$\|n\|=1\f$ |
-| \f$v\f$   | view direction      | \f$\|v\|=1\f$ |
-| \f$l\f$   | light               | \f$\|l\| = 1\f$ |
-| \f$h=\frac{v+l}{\|v + l\|}\f$   | half vector | |
-| \f$m\f$   | metallic factor     | \f$[0, 1]\f$ |
-| \f$r\f$   | roughness factor    | \f$[0, 1]\f$ |
-| \f$IOR\f$ | index of refraction | \f$[1, 3]\f$ |
-| \f$c\f$   | albedo color        | \f$(R, G, B)\f$ |
-
-\f$\cos\theta_l=(n \cdot l)\f$
-
-\f$\cos\theta_v=(n \cdot v)\f$
-
-\f$\cos\theta_h=(n \cdot h)\f$
-
-\f$\cos\theta_{vh}=(v \cdot h)\f$
-
-# Illumination model
-
-The main goal of illumination model is to calculate outgoing light radiance \f$L_o\f$ along the certain direction.
-The starting point of calculation might be the view direction \f$v\f$ aimed from point on surface (or in more general case just in space) to viewer position.
-Considering the point on opaque surface with normal \f$n\f$ the main equation of illumination can be defined as:
-
-\f[L_o=\int\limits_H f(v, l) L_i(l) \cos\theta_l\, \mathrm{d}l\f]
-
-Where \f$L_i(l)\f$ is light radiance coming from \f$l\f$ direction, \f$f(v,l)\f$ is **Bidirectional Reflectance Distribution Function** (**BRDF**) and \f$H\f$ is hemisphere which is oriented regarding to the surface normal \f$n\f$.
-Opaqueness of the surface mentioned earlier is important because in that case hemisphere is enough.
-More general model will require to consider directions all around a whole sphere and is not observed in this paper.
-\f$\cos\theta_l\f$ factor appearing is caused by affection of surface area and light direction mutual orientation to the amount of radiance coming to this area.
-This is mainly due to geometric laws. The rest part of integral is the key of the whole illumination model.
-BRDF defines it's complexity and optical properties of material.
-It has to model all light and material interactions and also has to satisfy some following criteria in order to be physical correct:
-* Positivity: \f$f(v,l) \geq 0\f$
-* Helmholtz reciprocity: \f$f(v,l) = f(l, v)\f$ (follows from 2<sup>nd</sup> Law of Thermodynamics)
-* Energy conservation: \f$\displaystyle \forall v \, \int\limits_H f(v,l) \cos\theta_l \, \mathrm{d}l = 1\f$ (in order not to reflect more light than came)
-
-It is worth to be mentioned that \f$f(v,l)\f$ depends on \f$n\f$ also but it is omitted to simplify notation. BRDF is usually split into two parts:
-
-\f[f(v,l) = f_d(v,l)+f_s(v, l)\f]
-
-Where \f$f_s(v, l)\f$ (specular BRDF) models reflection light interaction on surface and \f$f_d(v,l)\f$ (diffuse BRDF) models other processes happening depth in material (subsurface scattering for example).
-So that illumination equation might be rewritten as:
-
-\f[L_o=\int\limits_H (f_d(v,l)+f_s(v, l)) L_i(l) \cos\theta_l\, \mathrm{d}l\f]
-
-PBR theory is based on **Cook-Torrance specular BRDF**. It imagines surface as set of perfectly reflected micro faces distributed on area in different ways which is pretty good model approximation of real world materials.
-If this area is small enough not to be able to recognize separate micro surfaces the results becomes a sort of averaging or mixing of every micro plane illumination contribution.
-In that level it allows to work with micro faces in statistical manner manipulating only probabilities distributions of micro surfaces parameters such as normals, height, pattern, orientation etc.
-In computer graphics pixels are units of images and it usually covers a relatively large areas of surfaces so that micro planes can be considered to be unrecognizable.
-Going back to the BRDF the Cook-Torrance approach has the following expression:
-
-\f[f_s(v,l)=\frac{DGF}{4\cos\theta_l\cos\theta_v}\f]
-
-Three parts presented in nominator have its own meaning but can have different implementation with various levels of complexity and physical accuracy.
-In that paper only one certain implementation is used. The \f$D\f$ component is responsible for **micro faces normals distribution**.
-It is the main instrument that controls reflection's shape and strength according to **roughness** \f$r\f$ parameter.
-The implementation with good visual results is **Trowbridge-Reitz GGX** approach used in Disney's RenderMan and Unreal Engine:
-
-\f[D=\frac{\alpha^2}{\pi(\cos^2\theta_h(\alpha^2-1) + 1)^2}\f]
-
-Where \f$\alpha = r^2\f$. This square in needed only for smoother roughness parameter control.
-Without it the visual appearance of surface becomes rough too quickly during the parameter's increasing.
-
-The second \f$G\f$ component is called **geometric shadowing** or attenuation factor.
-The point is that micro surfaces form kind of terrain and can cast shadows over each other especially on extreme viewing angles.
-**Schlick's model** has been chosen as implementation:
-
-\f[\displaystyle G=\frac{\cos\theta_l \cos\theta_v}{(\cos\theta_l(1-k)+k)(\cos\theta_v(1-k)+k)}\f]
-
-Where \f$k=\frac{\alpha}{2}\f$, which means \f$k=\frac{r^2}{2}\f$ in terms of this paper.
-But \f$G\f$ depends on many factors so that it's approximations has float nature and can be modified a little bit in some cases in order to get more pleasant visual results.
-One of this modification will be described later in following chapters.
-
-The last component \f$F\f$ shows **how much light is reflected from surface** and is called **Fresnel's factor**.
-The rest amount of radiance might be absorbed or refracted by material.
-The most accurate expression of it is pretty complicate for calculation so that there is a variety of approximations.
-The good one with less computation efforts is **Schlick's implementation**:
-
-\f[F=F_0+(1-F_0)(1-\cos\theta_{vh})^5\f]
-
-Here \f$F_0\f$ is material's response coefficient at normal incidence (zero angle).
-Fresnel's factor has to be calculated differently for metals and dielectric/non-metals, but PBR theory tries to come up with universal formula for all types of material.
-In order to do that it is needed to be noticed that Schlick's approximation is applicable only to non-conductors and in that case \f$F_0 = F_{dielectric} = \left(\frac{1-IOR}{1+IOR}\right)^2\f$.
-**Index of Refraction** \f$IOR\f$ shows the proportion between light speed in vacuum (or even in air) and in material.
-The reference value of \f$IOR\f$ for plastic is **1.5**, and this value can be considered as default for all unknown dielectrics.
-In practice this parameter controls reflectance ability of material.
-Also it should be remembered that this approximation produces poor results with large \f$IOR\f$ values so that it is recommended to be kept in range of \f$[1, 3]\f$ in order to get plausible Fresnel's factor.
-This formula might be further propagated onto metals by using \f$F_0\f$ measured specifically for certain metal.
-It can be considered as some kind of a 'color' of metal and can be stored as albedo parameter \f$c\f$.
-And the final step of defining Fresnel's factor formula is mixing all this \f$F_0\f$ using metallic parameter \f$m\f$ (**metalness**):
-
-\f[F_0 = F_{dielectric}(1-m)+cm\f]
-
-For pure dielectrics with \f$m=0\f$ exactly Schlick's approximation will be used.
-For pure metals with \f$m=1\f$ it will be a little inaccurate but the same formula with measured \f$F_0\f$ values.
-Everything else for \f$m \in (0, 1)\f$ is not physically correct and it is recommended to keep \f$m\f$ exactly 1 or 0.
-Intermediate values may represent mixed areas for smooth transition between materials - like partially rusted metal (rust is mostly dielectric).
-Also it might be useful when parameters are read from textures with filtering and smoothing.
-
-BRDF described above has one important trait making computations easier called **isotropy**.
-Isotropy in this case means independence from rotation about normal resulting from supposition of uniform micro faces distribution at any direction along a surface.
-It allows to simplify random samples generation during Monte-Carlo integrals calculation and reduce dimensions of some lookup tables, which will be discussed in following chapters.
-Of course, isotropic materials form only subset of all real world's materials, but this subset covers majority of cases.
-There are special models considering special anisotropic traits of surfaces like a grinding of metal or other with dependency on rotation about normal;
-these models require special calculation tricks and additional parameters and are out of scope of this paper.
-
-The only thing left to do is to define \f$f_d(v,l)\f$.
-This part is responsible for processes happening in depth of material.
-First of all the amount of input light radiance participating in these processes is needed to be calculated.
-And it exactly can be realized from already known Fresnel's factor \f$F\f$ showing amount of reflected light but in negative term in this case in order to get the radiance left after reflection:
-
-\f[1-F\f]
-
-This part of ingoing light is assumed to be refracted in depth of surface and variety of events may happen there.
-A sequence of absorptions, reflections and reemissions more or less leads to light's subsurface scattering.
-Some part of this scattered light can go back outside but in modified form and in pretty unpredictable directions and positions.
-For opaque materials this part is noticeable and forms it's own color.
-If subsurface's paths of light are small enough and points of output are distributed locally around the input point it's possible to work in statistical way similar to the micro faces.
-This assumption covers a big amount of real world opaque materials.
-Other materials like skin, milk etc. with noticeable effect of subsurface scattering usually presented in form of partial translucency and some kind of self emission
-have more widely distributed output points and require more accurate and complicate ways of modeling with maybe some theory and techniques from volumetric rendering.
-The simple but visually enough assuming for statistically driven type of materials is just the same radiance for any direction. It results to **Lambertian's BRDF**:
-
-\f[\frac{c}{\pi}\f]
-
-Where \f$\pi\f$ is normalization coefficient in order to meet BRDF's criteria and \f$c\f$ is material's own color formed by adventures of light under surface.
-There is one detail about light interaction bringing some physicality to the model, and that is an absence of this diffuse component in metals.
-Metals reflect main part of light and the rest of it is absorbed being transformed into other form (mostly heat).
-That is the main visual difference between metallic and non-metallic materials realizing of which brings model to higher level of quality in compare to older non-physical models.
-
-So that all parts described above can be combined into united diffuse BRDF:
-
-\f[f_d(v,l) = (1-F)(1-m)\frac{c}{\pi}\f]
-
-\f$m\f$ is recommended to be exactly 1 or 0 but all values between can represent transition areas, as mentioned before.
-
-In this chapter one possible implementation of illumination model reflecting main PBR principles has been defined.
-The next step is using of it in practice.
-
-# Practical application
-
-It's time to apply deduced illumination model in practice.
-And the first step of it is separation of **direction based light sources** from illumination integral.
-Directional nature of such light sources means possibility to calculate it's influence to point of surface using only one direction and its intensity.
-Usually sources of this type do not have physical size and are represented only by position in space (for point or spot lights) or by direction itself (direction light imagined to be too far point sources like sun).
-This is just a kind of abstraction, while real world light emitters have noticeably sizes.
-But sources with realistic form and size cannot be presented in discrete term and require continuous integrals calculations or special approximations in order to be accurately injected to the model.
-In most cases direct based light sources in form of emitting points in space or just certain directions are good approximations and are enough for beginning.
-Having finite discrete amount of it in scene and considering only single direction from every of these lights, the integral is transformed just to the sum:
-
-\f[L_{direct} = \sum_{j=1}^M f(v, l_j) L_i^{direct}(l_j) \cos\theta_{l_j}\f]
-
-Where \f$M\f$ is a number of sources, \f$l_j\f$ is a direction and \f$L_i^{direct}\f$ is an intensity related to this direction.
-\f$direct\f$ label means that illumination has been computed directly from sources.
-The BRDF can be used directly without any calculation problems.
-The only exception might be \f$k\f$ in \f$G\f$ factor - it is recommended to be equal \f$\frac{(r+1)^2}{8}\f$ in order to get more pleasant results (that is modification mentioned in previous chapter).
-And actually it is enough to finally see something.
-There will be correct visualization with assumption of complete dark environment and absence of other points influence.
-It is called **local illumination**. Based on this name there is also a global or **indirect illumination** and that is the rest of integral:
-
-\f[L_{indirect} = \int\limits_H f(v, l) L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-It includes influence of light reflected or scattered from other points and environment's contribution.
-It's impossible to achieve photorealistic results without this component, but is is also very difficult to compute.
-While the cross point light interaction cannot be calculated in a simple way (especially in real time rendering), the environment illumination has some options to be realized via precomputational work before visualization.
-But right now lets summarize the practical application of illumination model.
-At this moment the output radiance is represented as:
-
-\f[L_o = L_{direct} + L_{indirect}\f]
-
-Where \f$L_{direct}\f$ is direction based light sources contribution which can be directly computed just applying bare formulas.
-It is enough to get some results in terms of local illumination but without \f$L_{indirect}\f$ component image will not be looked lifelike.
-\f$L_{indirect}\f$ is not trivial thing for calculation and that is stumbling block for real time rendering applications.
-But it can be relatively easy implemented in case of environment illumination via some precomputational work about which will be told in details in following chapters.
-
-# Image based lighting
-
-The next goal after \f$L_{direct}\f$ calculation is to find \f$L_{indirect}\f$.
-And it would be easier if \f$L_i^{indirect}(l)\f$ was known for every \f$l\f$.
-That is the main assumption of **image based lightning** (**IBL**).
-In practice, it can be achieved using environment image map, which is a special image representing illumination from all possible directions.
-This image might be a photo capturing a real world environment (spherical 360 degrees panoramas) or generated image baking the 3D scene itself, including in that case reflections of other objects.
-Environment image might be packed in different ways - **cube maps** and equirectangular maps are the most commonly used.
-Anyway, it allows \f$L_i^{indirect}(l)\f$ to be defined for every \f$l\f$ and its practical implementation in form of images gives name for this approach.
-Lets back to indirect illumination integral:
-
-\f[L_{indirect} = \int\limits_H f(v, l) L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-Substituting the BRDF by its expression allows to split indirect illumination into diffuse and specular components:
-
-\f[L_{indirect} = \int\limits_H f_d(v,l)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l + \int\limits_H f_s(v,l)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l = \f]
-
-\f[= (1-m)\frac{c}{\pi}\int\limits_H (1-F)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l + \frac{1}{4}\int\limits_H \frac{DFG}{\cos\theta_l \cos\theta_v}L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l\f]
-
-This splitting seems not to lead to simplicity of calculation but these two parts will be computed in slightly different ways in future.
-Lets write down this separately:
-
-\f[L_{indirect}^d = (1-m)\frac{c}{\pi}\int\limits_H (1-F)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l\f]
-
-\f[L_{indirect}^s = \frac{1}{4}\int\limits_H \frac{DFG}{\cos\theta_v \cos\theta_l} L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-Next transformations of these expressions require understanding of numerical way to find hemisphere integral and also its performance optimization techniques.
-And that the topic of the next chapter.
-
-# Monte-Carlo numeric integration
-
-**Monte-Carlo** is one of numeric methods to **find integral**.
-It is based on idea of mathematical expectation calculation.
-In one dimensional case if \f$f(x)\f$ is a function with parameter distributed according to probability density \f$p(x)\f$ the mathematical expectation of it can be found using following expression:
-
-\f[E = \int\limits_{-\infty}^\infty f(x) p(x)\, \mathrm{d}x\f]
-
-Also this expectation can be approximated in statistical term using certain sequence of random variable \f$x\f$:
-
-\f[E \approx \frac{1}{N} \sum_{i=1}^{N} f(x_i)\f]
-
-It can be used in general definite integrals calculations.
-Just valid \f$p(x)\f$ defined on \f$[a, b]\f$ range and sequence \f$x_i\f$ generated according to it are needed for that:
-
-\f[\int\limits_a^b f(x)\, \mathrm{d}x = \int\limits_a^b \frac{f(x)}{p(x)}p(x)\, \mathrm{d}x = \int\limits_{-\infty}^{\infty} \frac{f(x)}{p(x)}p(x)\, \mathrm{d}x \approx \frac{1}{N} \sum_{i=1}^{N} \frac{f(x_i)}{p(x_i)}\f]
-
-Where \f$f(x)\f$ is considered to be equal to zero outside of \f$[a, b]\f$ range.
-This is also true for functions on sphere or hemisphere:
-
-\f[\int\limits_{H|S} f(l)\, \mathrm{d}l \approx \frac{1}{N}\sum_{i=1}^{N} \frac{f(l_i)}{p(l_i)}\f]
-
-The main questions are choosing \f$p(l)\f$ and generating samples \f$l_i\f$.
-The one of the simple ways is uniform distribution along sphere or hemisphere.
-Lets realize that on sphere for example.
-There are \f$4\pi\f$ possible directions in terms of sphere's areas and steradians (direction can be presented as dot on a unit sphere):
-
-\f[\int\limits_S 1\, \mathrm{d}l = 4\pi\f]
-
-Where \f$S\f$ is the unit sphere.
-In order to be uniform \f$p(l)\f$ must be constant and satisfy normalization criteria:
-
-\f[\int\limits_S p(l)\, \mathrm{d}l = 1\f]
-
-So that \f$p(l) = \frac{1}{4\pi}\f$.
-Usually direction \f$l\f$ is parametrized by spherical coordinates \f$\phi \in [0, 2\pi]\f$ and \f$\theta \in [0, \pi]\f$ boiling down to the 2D samples generation.
-But in these terms joint \f$p(\theta, \phi)\f$ will be looked slightly different due to variables transition.
-\f$l\f$ is defined in regular Cartesian coordinates \f$l=(x, y, z)\f$ with \f$\|l\| = 1\f$.
-The spherical coordinates transform looks like:
-
-\f[x = r\sin\theta\cos\phi,\, y = r\sin\theta\sin\phi,\, z = r\cos\theta\f]
-
-Where \f$r = 1\f$.
-In order to express probability density using new variables it is needed to multiply this density by Jacobian of transform:
-
-\f[p(\theta,\phi) = p(l)|J_T|\f]
-
-Where:
-
-\f[|J_T| = \begin{vmatrix} \frac{\partial x}{\partial r} & \frac{\partial x}{\partial \theta} & \frac{\partial x}{\partial \phi} \\ \frac{\partial y}{\partial r} & \frac{\partial y}{\partial \theta} & \frac{\partial y}{\partial \phi} \\ \frac{\partial z}{\partial r} & \frac{\partial z}{\partial \theta} & \frac{\partial z}{\partial \phi} \end{vmatrix} = r^2\sin\theta\f]
-
-So that joint probability density in new variables looks like:
-
-\f[p(\theta, \phi) = \frac{\sin\theta}{4\pi}\f]
-
-This variable transfer rule of **Probability Density Function** (**PDF**) will be useful in following chapters, when integral calculation optimization techniques will be being told.
-Having \f$p(\theta, \phi)\f$ the partial single dimensional probability densities are able to be found:
-
-\f[p(\phi) = \int\limits_0^\pi p(\theta, \phi)\, \mathrm{d}\theta = \frac{1}{4\pi} \int\limits_0^\pi \sin\theta\, \mathrm{d}\theta = \frac{1}{2\pi}\f]
-
-\f[p(\theta) = \int\limits_0^{2\pi} p(\theta, \phi)\, \mathrm{d}\phi = \frac{\sin\theta}{4\pi}\int\limits_0^{2\pi}1\, \mathrm{d}\phi = \frac{\sin\theta}{2}\f]
-
-The final step is sequence generation itself.
-In order to be able to generate values with arbitrary distributions it is helpful to start from uniform numbers in range of \f$[0, 1]\f$.
-And that can be done via any known true- and pseudo- random generators.
-Even simple \f$\frac{1}{i}\f$ sequence is appropriate for beginning but it can be not so efficient in terms of computations convergence.
-There are specially designed series for the last reason and it will be tackled in chapter about optimizations.
-The \f$\phi\f$ variable is noticed to be uniformly distributed so that it can be directly generated without any additional manipulations.
-Just range \f$[0, 1]\f$ is needed to be mapped to range \f$[0, 2\pi]\f$.
-For any other variables including \f$\theta\f$ the inverse transform sampling approach can be applied.
-First of all **cumulative distribution function** (**CDF**) is needed to be found.
-It is probability of random value to be less than argument of this functions by definition.
-For continues distributions it can be expressed in following form:
-
-\f[F(x) = \int\limits_{-\infty}^x p(x')\, \mathrm{d}x'\f]
-
-Lets find CDF for \f$\theta\f$:
-
-\f[F(\theta) = \int\limits_{-\infty}^\theta p(\theta')\, \mathrm{d}\theta' = \int\limits_0^\theta \frac{\sin\theta'}{2}\, \mathrm{d}\theta' = \frac{1-\cos\theta}{2}\f]
-
-The CDF maps \f$\theta\f$ values from range of \f$[0, \pi]\f$ to probability in range of \f$[0, 1]\f$.
-The next step is to find inverse cumulative function which can be not so trivial sometimes but pretty obvious in current case:
-
-\f[F^{-1}(u) = \arccos(1-2u)\f]
-
-If substitute uniform distributed in range \f$[0, 1]\f$ values \f$u\f$ as argument of this function the values with origin probability density will appear.
-In other words:
-
-\f[\theta = \arccos(1 - 2u),\, u \in [0, 1],\, p(u) = 1 \Rightarrow p(\theta) = \frac{\sin\theta}{2}\f]
-
-That is the key of this random values generation technique.
-All steps described above can be also done for hemisphere:
-
-\f[p(l) = \frac{1}{2\pi}\f]
-
-\f[p(\theta, \phi) = \frac{\sin\theta}{2\pi}\f]
-
-\f[p(\phi) = \int\limits_0^\frac{\pi}{2} p(\theta, \phi)\, \mathrm{d}\theta = \frac{1}{2\pi} \int\limits_0^\frac{\pi}{2} \sin\theta\, \mathrm{d}\theta = \frac{1}{2\pi}\f]
-
-\f[p(\theta) = \int\limits_0^{2\pi} p(\theta, \phi)\, \mathrm{d}\phi = \frac{\sin\theta}{2\pi}\int\limits_0^{2\pi}1\, \mathrm{d}\phi = \sin\theta\f]
-
-\f[\theta = \arccos(1-u)\f]
-
-Mote-Carlo integration cannot guarantee exact estimation of convergence speed with using random generated samples.
-There is only probability estimation of it.
-But this algorithm is pretty universal and relatively simple to be applied to almost any function using at least uniform distributed points.
-Moreover special \f$p(l)\f$ can be chosen and special pseudo-random sequences can be designed in order to speed up convergence for some functions (following chapter talk about that in details).
-That is why this method is widely used in computer graphics and demonstrates good results.
-Also another one advantage is worth to be mentioned - possibility to iteratively accumulate computations and present intermediate results during rendering which is used in some ray tracing applications.
-
-# Split sum
-
-Lets go back to the image based lighting and the figure of specular component.
-As was defined before that is hemisphere integral with following expression:
-
-\f[L_{indirect}^s = \frac{1}{4}\int\limits_H \frac{DFG}{\cos\theta_v \cos\theta_l} L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-The Monte-Carlo integration algorithm can be directly applied:
-
-\f[L_{indirect}^s = \int\limits_H f_s(v, l)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l \approx \frac{1}{N}\sum_{i=1}^N \frac{f_s(v, l_i) L_i^{indirect}(l_i) \cos\theta_{l_i}}{p(v, l_i)}\f]
-
-\f$p(v, l_i)\f$ depends on \f$v\f$ and implicitly on \f$r\f$ in order to be completely general.
-Optimization strategies use different samples distributions for different view direction orientations and roughness values.
-Anyway even with all optimization techniques this algorithm continues to require too much calculations.
-Good visual results require noticeable number of samples and using this approach for every point in real time rendering becomes unrealistic.
-The way to avoid these enormous calculations is doing them beforehand somehow.
-The first trick on the way to this is split the sum separating environment light component:
-
-\f[L_{indirect}^s \approx \frac{1}{N} \sum_{i=1}^N \frac{f_s(v, l_i) L_i^{indirect}(l_i) \cos\theta_{l_i}}{p(v, l_i)} \approx \left( \frac{1}{N} \sum_{i=1}^N L_i^{indirect}(l_i) \right) \left( \frac{1}{N} \sum_{i=1}^N \frac{f_s(v, l_i) \cos\theta_{l_i}}{p(v, l_i)} \right)\f]
-
-Where the second brackets represent approximation of integral so that the expression can be rewritten as:
-
-\f[L_{indirect}^s \approx \frac{1}{N} \sum_{i=1}^N \frac{f_s(v, l_i) L_i^{indirect}(l_i) \cos\theta_{l_i}}{p(v, l_i)} \approx \left( \frac{1}{N} \sum_{i=1}^N L_i^{indirect}(l_i) \right) \int\limits_H f_s(v, l) \cos\theta_l\, \mathrm{d}l\f]
-
-This integral is exact \f$L_{indirect}^s\f$ in condition when \f$L_i^{indirect}(l) = 1\f$ what just means white uniform environment.
-The sum before it is kind of averaged environment illumination.
-The main accomplishment after all this manipulations is possibility to calculate light and BRDF components separately.
-The sum with \f$L_i^{indirect}(l_i)\f$ can be computed beforehand for every normal direction and stored to image called specular map but with some valuable details.
-The problem is that \f$l_i\f$ samples must be generated according to \f$p(v, l_i)\f$ distribution depended on \f$v\f$ and \f$r\f$ as was mentioned earlier.
-Variation of normal is not enough in that case and these variables are needed to be considered too.
-The ways to resolve it are topic of one of the following chapters and now understanding the fact that at least this part can be precomputed before rendering is enough for now.
-And it is important not to miss out that there is no more BRDF influence in this sum and only \f$p(v, l)\f$ can affect in this case.
-That is why it is so important to strict to PDF during samples generation and that is why \f$p(v, l)\f$ must be correlated with BRDF somehow in this approximation approach with splitting.
-For example completely mirroring materials with \f$r = 0\f$ will not be looked as expected if just uniform distribution is used
-because such surfaces have only one possible direction from which light can be reflected along view direction in compare with \f$N\f$ absolutely scattered in case of uniform or many other distributions.
-
-The rest part also can be saved to image. Lets unroll its expression:
-
-\f[\int\limits_H f_s(v, l) \cos\theta_l\, \mathrm{d}l = \int\limits_H \frac{DGF}{4\cos\theta_v \cos\theta_l} \cos\theta_l\, \mathrm{d}l\f]
-
-This integral is not actually a scalar.
-That is RGB value due to only \f$F\f$ factor and even more only to \f$F_0\f$.
-In order to simplify future computations \f$F_0\f$ is needed to be moved out of integral.
-Substitution of Schlick's approximation helps to achieve it:
-
-\f[F = F_0+(1-F_0)(1-\cos\theta_{vh})^5 = F_0(1-(1-\cos\theta_{vh})^5) + (1-\cos\theta_{vh})^5\f]
-
-\f[\int\limits_H \frac{DGF}{\cos\theta_v \cos\theta_l} \cos\theta_l\, \mathrm{d}l = F_0 \int\limits_H \frac{DG}{4\cos\theta_v \cos\theta_l} (1-(1-\cos\theta_{vh})^5) \cos\theta_l\, \mathrm{d}l + \int\limits_H \frac{DG}{4\cos\theta_v \cos\theta_l} (1-\cos\theta_{vh})^5 \cos\theta_l\, \mathrm{d}l\f]
-
-This form may not look easier, but it has several advantages.
-The first one is independence from globally defined \f$L_i^{indirect}(l)\f$, so that normal orientation does not matter and can be set in any handful way for calculations (Z axis for example).
-The second one results from isotropic illumination system allowing \f$\phi\f$ component of view vector to be set arbitrarily (0 for example) and \f$\cos\theta_v\f$ will be enough to define view direction.
-And the third one is scalar nature of integrals so that only two precomputed numbers are needed to find BRDF part of \f$L_{indirect}^s\f$.
-Considering dependency of these integrals from \f$\cos\theta_v\f$ and \f$r\f$ both of it can be precomputed and stored to 2D look-up image variating these two parameters in range \f$[0, 1]\f$ with two channels consisting of scale and bias for \f$F_0\f$.
-
-Current result for \f$L_{indirect}^s\f$ is computing it using 2D image for BRDF part and omnidirectional image for environment illumination.
-There were a lot of words about Monte-Carlo optimizations techniques and about PDF choice which is important not only in terms of numeric integration but in terms of visual results correctness.
-It's time to talk about that.
-
-# Importance sampling
-
-Current goal is to speed up Monte-Carlo integration of Cook-Torrance like integrals with following expression:
-
-\f[\int\limits_H \frac{DG}{4\cos\theta_v \cos\theta_l} g(v, l) \cos\theta_l\, \mathrm{d}l\f]
-
-Where \f$g(v, l)\f$ is just arbitrary function representing Fresnel's factor itself or its components.
-In order to increase convergence the samples with larger contribution (or in other words with larger function's values) have to appear more frequently than others proportionally to its contribution.
-So that less significant summand with less influence to result will be considered rarely and in opposite way parts brining noticeable changes to the sum will be taken often.
-That is the main idea of **importance sampling technique**.
-\f$p(l)\f$ has to represent significance of sample in terms of integrated function via probability somehow.
-And it will be like that if PDF is already part of original function because in that case probability density directly affects to contribution forming.
-Separating this distribution component is one possible and effective way to realize importance sampling strategy.
-In integral presented above PDF part already exists and that is \f$D\f$ component.
-But it is distribution of micro faces normals or ideally reflection direction or \f$h\f$ in other word and not light directions distribution which is needed in fact.
-Anyway that is good starting point and lets generate \f$h\f$ vectors first.
-\f$D\f$ has the following expression:
-
-\f[D=\frac{\alpha^2}{\pi(\cos^2\theta_h(\alpha^2-1) + 1)^2}\f]
-
-Frankly speaking \f$D(h)\f$ is called normal distribution but cannot be directly used as hemisphere distribution.
-Originally it is statistical factor used to define total area of micro faces \f$\mathrm{d}A_h\f$
-whose normals lie withing given infinitesimal solid angle \f$\mathrm{d}h\f$ centered on \f$h\f$ direction using the original small enough area of macro surface \f$\mathrm{d}A\f$:
-
-\f[dA_h = D(h)\,\mathrm{d}h\, \mathrm{d}A\f]
-
-First of all this factor must be positive:
-
-\f[D(h) \geq 0\f]
-
-But the total area of micro faces landscape is at least equal to origin surface but even bigger in general:
-
-\f[1 \leq \int\limits_H D(h)\, \mathrm{d}h\f]
-
-This trait does not allow to use \f$D\f$ as hemisphere distribution.
-But it can be fixed with following feature:
-
-\f[\forall v\, \int\limits_H D(h)(v \cdot h)\, \mathrm{d}h = (v \cdot n)\f]
-
-Which means that total area of micro faces projected to any direction must be the same as projected area of origin macro surface.
-It is pretty tricky trait in \f$D\f$ definition but it leads to interesting results in condition when \f$v = n\f$:
-
-\f[\int\limits_H D(h)\cos\theta_h\, \mathrm{d}h = 1\f]
-
-So that \f$\cos\theta_h\f$ coefficient normalizes normal distribution in terms of hemisphere and allows to use it as distribution.
-Finally PDF of half vectors can be wrote:
-
-\f[p(\theta_h, \phi_h) = D\cos\theta_h\sin\theta_h = \frac{\alpha^2 \cos\theta_h\sin\theta_h}{\pi(\cos^2\theta_h(\alpha^2-1) + 1)^2}\f]
-
-\f$\sin\theta_h\f$ results from spherical coordinate system transfer which was described in Monte-Carlo integration chapter.
-Lets strict to samples generation procedure and find partial probability densities:
-
-\f[p(\phi_h) = \int\limits_0^\frac{\pi}{2} p(\theta_h, \phi_h)\, \mathrm{d}\theta_h = \int\limits_0^\frac{\pi}{2} \frac{\alpha^2 \cos\theta_h\sin\theta_h}{\pi(\cos^2\theta_h(\alpha^2-1) + 1)^2}\, \mathrm{d}\theta = \frac{1}{2\pi}\f]
-
-\f[p(\theta_h) = \int\limits_0^{2\pi} p(\theta_h, \phi_h)\, \mathrm{d}\phi_h = \int\limits_0^{2\pi} \frac{\alpha^2 \cos\theta_h\sin\theta_h}{\pi(\cos^2\theta_h(\alpha^2-1) + 1)^2}\, \mathrm{d}\phi = \frac{2 \alpha^2 \cos\theta_h\sin\theta_h}{(\cos^2\theta_h(\alpha^2-1) + 1)^2}\f]
-
-\f$p(\phi_h)\f$ is unnecessary to be calculated analytically.
-The fact of independency from \f$\phi\f$ is enough to figure out that this coordinate is uniformly distributed.
-Anyway the \f$F(\theta_h)\f$ is next step:
-
-\f[F(\theta_h) = \int\limits_0^{\theta_h} \frac{2 \alpha^2 \cos\theta'_h\sin\theta'_h}{(\cos^2\theta'_h(\alpha^2-1) + 1)^2}\, \mathrm{d}\theta'_h = \int\limits_{\theta_h}^0 \frac{2 \alpha^2}{(\cos^2\theta'_h(\alpha^2-1) + 1)^2}\, \mathrm{d}(\cos^2\theta'_h) = \frac{\alpha^2}{\alpha^2-1}\int\limits_0^{\theta_h} \mathrm{d}\frac{1}{\cos^2\theta'_h(\alpha^2-1)+1} =\f]
-
-\f[ = \frac{\alpha^2}{\alpha^2-1} \left( \frac{1}{\cos^2\theta_h(\alpha^2-1) + 1} - \frac{1}{\alpha^2} \right) = \frac{\alpha^2}{\cos^2\theta_h(\alpha^2-1)^2+(\alpha^2-1)} - \frac{1}{\alpha^2-1}\f]
-
-In order to apply inverse transform sampling the \f$F^{-1}(u)\f$ is needed to be found:
-
-\f[F^{-1}(u) = \theta_h = \arccos\sqrt{\frac{1-u}{u(\alpha^2-1)+1}}\f]
-
-So that there is no more obstacles to generate \f$h\f$.
-But the main goal was \f$l\f$ direction.
-In order to get it the view vector \f$v\f$ has to be reflected related to already found \f$h\f$:
-
-\f[l = 2(v \cdot h)h - v\f]
-
-That is practical side of light direction generation.
-But the theoretical one is needed to be resolved to calculate sum.
-It is time to find \f$p(l)\f$ using known \f$p(h)\f$.
-First of all the fact that \f$l\f$ is just transformed \f$h\f$ is needed to be understood.
-In that way the light direction's PDF has following expression:
-
-\f[p(l) = p(h)|J_T|\f]
-
-Where \f$|J_T|\f$ is Jacobian of reflection transformation.
-Lets find it.
-Right now \f$n\f$ is axis from which \f$\theta\f$ spherical coordinate is encountered.
-The first step is setting \f$v\f$ as starting point of \f$\theta\f$ instead of \f$n\f$.
-This is linear transform so that \f$|J_T| = 1\f$.
-Next step is transfer to spherical coordinate with \f$|J_T| = \sin\theta_{vh}\f$.
-Due to previous step \f$\theta_{vh}\f$ is used instead of \f$\theta_h\f$.
-In this coordinate system reflecting of \f$v\f$ relative to \f$h\f$ is just doubling \f$\theta_{vh}\f$ and Jacobian of it is equal to \f$\frac{1}{2}\f$.
-In series of transform the Jacobians are multiplied so that currently \f$|J_T| = \frac{1}{2}\sin\theta_{vh}\f$.
-And the final step is inverse transform to Cartesian coordinate system with \f$|J_T| = (\sin\theta_{vl})^{-1} = (\sin2\theta_{vh})^{-1}\f$.
-Combining this all together the following expression is obtained for reflection transform Jacobian:
-
-\f[|J_T| = \frac{\sin\theta_{vh}}{2\sin2\theta_{vh}} = \frac{\sin\theta_{vh}}{4\sin\theta_{vh}\cos\theta_{vh}} = \frac{1}{4\cos\theta_{vh}}\f]
-
-And finally \f$p(l)\f$ looks like:
-
-\f[p(l) = p(h)|J_T| = \frac{D\cos\theta_h}{4\cos\theta_{vh}}\f]
-
-Lets go back to the Monte-Carlo sum and insert found result to it:
-
-\f[\int\limits_H \frac{DG}{4\cos\theta_v \cos\theta_l} g(v, l) \cos\theta_l\, \mathrm{d}l \approx \frac{1}{N} \sum_{i=1}^N \frac{DG\, g(v, l_i) \cos\theta_{l_i}}{4\cos\theta_v \cos\theta_{l_i}\, p(l_i)} = \frac{1}{N} \sum_{i=1}^N \frac{G\, g(v, l_i) \cos\theta_{l_i} \cos\theta_{vh_i}}{\cos\theta_v \cos\theta_{l_i} \cos\theta_{h_i}}\f]
-
-Here \f$G\f$ component is recommended to be calculated with original \f$k=\frac{\alpha}{2} = \frac{r^2}{2}\f$ in order to get more plausible result.
-Of course, all \f$\cos\f$ must be clamped to range \f$[0, 1]\f$ because integral is calculated on a hemisphere and all expressions are defined on it.
-\f$\cos\theta_v \cos\theta_{l_i}\f$ in denominator can be reduced with exactly the same part in geometric attenuation factor in order to avoid additional zero division cases.
-
-Summarizing importance sampling strategy described above the convergence of Monte-Carlo integration can be improved using special PDF correlated with integrated function.
-In case of BRDF with normal distribution functions \f$D\f$ the PDF producing procedure is defined.
-Practically half vector \f$h\f$ is generated first and \f$l\f$ is obtained from it by view vector \f$v\f$ reflecting.
-Due to this transformation final form of probability density used in sum is quite different but also has defined algorithm of calculation.
-For isotropic Cook-Torrance BRDF the \f$\cos\theta_v\f$ and roughness \f$r\f$ are enough to start generation so that all integrals of that kind can be precalculated in 2D look-up tables variating these two parameters.
-The same samples generation procedure must be used in specular map baking described in next chapter.
-
-# Specular map
-
-The situation with BRDF part of \f$L_{indirect}^s\f$ is clear now and \f$L_i^{indirect}(l)\f$ sum is left to be discussed.
-That was called **specular map** and has following form:
-
-\f[\frac{1}{N}\sum_{i=1}^N L_i^{indirect}(l_i)\f]
-
-As was mentioned this sum must be calculated for every normal direction using the same samples generation principles as in numeric integration computation.
-This principles require two scalar parameters \f$\cos\theta_v\f$ and \f$r\f$ but now \f$\phi\f$ really matters.
-So that in fact the specular map has to be saved in 3D table consisting omnidirectional textures.
-That is a big expense of computational and memory resources.
-A couple of tricks helps to reduce dimensions.
-First of all the \f$\cos\theta_v\f$ and \f$\phi\f$ can be just excluded.
-In that way \f$v\f$ is considered to be equal to \f$n\f$.
-Of course this approach produces an error and affects the final result.
-It can be fixed more or less by \f$\cos\theta_{l_i}\f$ weighting:
-
-\f[\frac{1}{N} \sum_{i=1}^N L_i^{indirect}(l_i) \cos\theta_{l_i}\f]
-
-It is not a complete solution but practice shows that it is enough to get plausible illumination with sacrificing of lengthy reflections at grazing angles which exist in fact if everything is honestly computed.
-The problem is that for \f$v \neq n\f$ considering this sum to be defined related to \f$n\f$ became incorrect.
-For example, for complete mirroring materials with \f$r = 0\f$ this sum must boil down to \f$L_i^{indirect}(v_r)\f$
-but not to \f$L_i^{indirect}(n)\f$ where \f$v_r\f$ is just reflected \f$v\f$ or in other words \f$v_r = 2(v \cdot n)n - v\f$.
-That it just mirroring reflection principle.
-Assumption of \f$n = v\f$ also means that \f$n = v = v_r\f$.
-In that way radiance map better to be considered as averaging of illumination coming from \f$v_r\f$.
-So that it has become to be defined related to reflection direction which has to be calculated before map's fetching.
-
-Anyway, there are just two dimensions in radiance look-up table remain.
-The rest one with \f$r\f$ parameter cannot be reduced.
-There is no other ways except just roughness variation but in order to simplify that computations can be done for several values and the rest ones lying between can be obtained from linear interpolation.
-This is another source of visual artifacts but it also works good in practice and that is pretty common approach.
-But it still requires noticeably amount of samples and that is for every pixel related to each \f$r\f$ value.
-It can be appropriate for precomputations but still limits using dynamic environments in real time rendering or just even static environments but on weak devices such as mobile ones.
-And there are several possible ways to improve radiance map baking performance.
-
-The first one is using textures with smaller resolutions for larger roughnesses.
-The point is that smaller \f$r\f$ values produce map saving more details from origin environment in opposite to larger ones representing lower frequency components and working as low pass filters in fact.
-So less pixels in combination with linear interpolation is enough to store less detailed convolutions.
-Moreover, this approach naturally works with textures levels of details in graphics API
-so that every certain radiance map related to certain \f$r\f$ can be stored on its own mip level and be directly fetched with linear interpolation not only over one texture but over levels too.
-As practice shows 6 levels are enough.
-
-After reducing pixels count it is turn for samples number.
-And again correlation with roughness can be noticed.
-For example map for completely mirroring materials with \f$r = 0\f$ the same sample \f$l_i = v_r\f$ will be produced.
-So that only one sample is enough in this case.
-In opposite way directions for \f$r = 1\f$ will be scattered over almost whole hemisphere what requires as much samples as available.
-The 'locality' of distribution is decreased during increasing roughness and it is possible to assume that samples number might to be proportional to this 'locality' keeping accuracy at the same level.
-But how can 'locality' be interpreted in terms of probability distribution? One possible way is CDF meaning.
-\f$F(\theta_h)\f$ has been already defined and by definition it shows the probability of random value \f$\theta_h\f$ to be less than argument of CDF.
-In other words \f$F(\theta'_h) = u\f$ means that probability of \f$\theta_h\f$ to be in range of \f$[0, \theta'_h]\f$ is \f$u\f$.
-The inverse task of range searching using given \f$u\f$ can be solved with help of \f$F^{-1}(u) = \theta'_h\f$.
-If \f$u\f$ is close to 1 (exact 1 has no sense because in that case \f$\theta'_h = \max\theta_h = \frac{\pi}{2}\f$)
-then \f$\theta'_h\f$ represents the range of the most probable or most frequently generated values and that can be interpreted as 'locality' of distribution.
-After that if samples number of the worst case with \f$r = 1\f$ is set (\f$N(1) = \max N\f$) the other ones can be estimated using following formula:
-
-\f[N(r) = N(1)\frac{\theta'_h(r)}{\frac{\pi}{2}} = N(1)\frac{2\theta'_h(r)}{\pi} = N(1)\frac{2F^{-1}(u)}{\pi} = N(1)\frac{2}{\pi}\arccos\sqrt{\frac{1-u}{u(\alpha^2-1)+1}}\f]
-
-It is approximate expression representing only estimated general proportionality so that cases of \f$r = 0\f$ and \f$r = 1\f$ must be processed separately with \f$N(0) = 1\f$ and \f$N(1) = \max N\f$.
-\f$u\f$ can be parameter of this optimization strategy controlling speed of samples reducing in order to balance performance and quality (\f$u = 1\f$ disables this optimization at all).
-This pretty tricky technique allows reducing calculations for every pixels without sacrificing the quality.
-
-In addition to optimizations mentioned before another one can be applied in order to help to reduce samples numbers as previous one.
-Using less samples produces image noise due to discrete nature of Monte-Carlo approximation.
-But it can be slightly smoothed using some prefiltration.
-The idea is that for the directions with small PDF or in other words for rare directions the samples near of it is unlikely to be generated.
-So that this direction represents the averaged illumination from relatively big area on hemisphere but approximate it by just a constant.
-It wold be better to get from such direction already averaged over bigger area environment.
-It can be achieved using mip levels of origin \f$L_i^{indirect}\f$ whose pixels of one level is exact 4 averaged pixels from previous one.
-Also mip levels generation is build in most common graphic API so there are no problems with it.
-But first of all the area covered by one sample is needed to be found.
-And that can be done as:
-
-\f[\Omega_s = \frac{1}{N\,p(l)} = \frac{4\cos\theta_{vh}}{ND\cos\theta_h}\f]
-
-Circumstance of \f$v = v_r = n\f$ leads to \f$\cos\theta_{vh}\f$ and \f$\cos\theta_h\f$ reducing so expression becomes even simpler:
-
-\f[\Omega_s =\frac{4}{ND}\f]
-
-Of course all zero divisions must be avoided by clamping, for example.
-After that the area covered by one pixel of environment map is calculated.
-In case of a cube map it looks like:
-
-\f[\Omega_p = \frac{4\pi}{6k^2}\f]
-
-Where \f$k\f$ is size of one cube map side in pixels (sides are assumed to be quads).
-Finally the mip level of origin environment map which is needed to be fetched for this certain sample is defined by following expression:
-
-\f[lod = \frac{1}{2} \log_2\left(\frac{\Omega_s}{\Omega_p}\right)\f]
-
-The mathematics connected with mip levels sizes lie behind it but this is out of scope of this paper.
-In combination with previous optimization technique this approach allows \f$N(1)\f$ to be smaller keeping visual results good.
-
-That is not all possible optimization tricks but at least these three significantly reduces compute efforts and brings radiance map calculation to weak devices or even to dynamic environments in real time but in reasonable limits.
-
-In that way \f$L_{indirect}^s\f$ can be completely computed without any integral approximations.
-Only 2D look-up table of BRDF part and mip mapped omnidirectional texture of irradiance map are needed.
-The first one can be got even without any environment.
-It was achieved using some rough approximations and assumptions but despite of that the visual result are still plausible and can be compared even with ray traced images.
-In order to complete whole image based lighting the \f$L_{indirect}^d\f$ component is left to be discussed.
-
-# Spherical harmonics
-
-Lets go back to diffuse indirect illumination component represented by following formula:
-
-\f[L_{indirect}^d = (1-m)\frac{c}{\pi}\int\limits_H (1-F)L_i^{indirect}(l)\cos\theta_l\, \mathrm{d}l\f]
-
-Of course, Monte-Carlo algorithm can be applied directly and hemisphere integral can be precalculated for every normal direction
-but dependence from \f$v\f$ in Fresnel's factor does not allow to do it efficiently (every \f$v\f$ direction is needed to be considered again).
-In order to resolve it modified version of Schlick's approximation has been created:
-
-\f[F \approx F_{ss}=F_0+(\max(1-r, F_0))(1-\cos\theta_v)^5\f]
-
-It differs from origin one and loses accuracy a little bit but now there is no light direction inside
-so that it can be considered as kind of screen space defined Fresnel's factor (\f$ss\f$ means exactly 'screen space') and can be removed from integral:
-
-\f[L_{indirect}^d = (1-m)(1-F_{ss})\frac{c}{\pi} \int\limits_H L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-The resulted expression without \f$(1-m)\f$ and \f$(1-F_{ss})\f$ parts is pretty known entity called **irradiance**.
-It can be precalculated using \f$\cos\theta_l\f$ as PDF for importance sampling (actually it is only option in this case excluding uniform distribution).
-But even with that samples will be scattered almost over whole hemisphere.
-As was discussed in previous chapter this case requires significant amount of samples in order to average illumination with appropriate quality.
-Poor accuracy resulted from lack of summand can be noticed especially on high frequency environments having a lot of contrasting details.
-It worth to be mentioned that irradiance is used not only in BRDF.
-Omnidirectional diffuse illumination captured for certain point or even for several points uniformly or hierarchically distributed is base of some baking global illumination techniques.
-There it is called a **light probe**. So that other way to compute and store irradiance maps was found resolving many mentioned problems.
-The Fourier's decomposition analogue for spherical function allows to achieve this.
-That would be easy to explain concept directly on example.
-So lets start from \f$L_i^{indirect}(l)\f$.
-It is spherical function because directions are just points on sphere.
-The decomposition looks like:
-
-\f[L_i^{indirect}(l) = \sum_{i = 0}^\infty \sum_{j=-i}^i L_i^j y_i^j(l)\f]
-
-Where \f$y_i^j(l)\f$ are spherical functions forming orthonormalized basis called spherical harmonics and \f$L_i^j\f$ is decompositions coefficients.
-Orthonormality means that dot product of two basis elements is equal to 1 if this is the same functions and is equal to zero otherwise.
-Dot product on a sphere is defined as integral of functions multiplication. In other words:
-
-\f[\int\limits_S y_i^j(l)\, y_{i'}^{j'}(l)\, \mathrm{d}l = \begin{cases} 1 & \quad i,j = i',j' \\ 0 & \quad \mathrm{otherwise}\end{cases}\f]
-
-Function basis with such traits is known and is described by following formulas:
-
-\f[y_i^{j > 0}(\theta, \phi) = \sqrt{2}K_i^j\cos(j\phi)P_i^j(\cos\theta)\f]
-\f[y_i^{j<0}(\theta, \phi) = \sqrt{2}K_i^j\sin(j\phi)P_i^{|j|}(\cos\theta)\f]
-\f[y_i^0(\theta, \phi) = K_i^0P_i^0(\cos\theta)\f]
-
-\f[K_i^j = \sqrt{\frac{(2i+1)(i-|j|)!}{4\pi(i+|j|)!}}\f]
-\f[P_0^0(x) = 1\f]
-\f[P_1^0(x) = x\f]
-\f[P_i^i(x) = (-1)^i(2i-1)!!(1-x^2)^\frac{i}{2}\f]
-\f[P_i^j(x) = \frac{(2i-1)xP_{i-1}^j(x) - (i + j - 1)P_{i-2}^j}{i - j}\f]
-
-Here \f$K_i^j\f$ are normalization factors and \f$P_i^j\f$ are **Legendre's polynomials**.
-Decomposition coefficients \f$L_i^j\f$ are dot product of origin function (\f$L_i^{indirect}(l)\f$ in current case) and corresponding basis element. It can be written down as:
-
-\f[L_i^j = \int\limits_S L_i^{indirect}(l)\,y_i^j(l)\, \mathrm{d}l\f]
-
-Fact that all calculation happen over a sphere but not over hemisphere right now is important not to be missed.
-That was example of spherical function decomposition but not a solution for original task which looks like:
-
-\f[\int\limits_H L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l\f]
-
-First of all, lets transform this integral to be defined not over hemisphere but sphere:
-
-\f[\int\limits_H L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l = \int\limits_S L_i^{indirect}(l)\overline{\cos}\theta_l\, \mathrm{d}l\f]
-
-Where \f$\overline{\cos}\f$ is cosine clamped to zero which can be expressed as:
-
-\f[\overline{\cos}\theta_l = \max(\cos\theta_l, 0)\f]
-
-Resulted expression can be considered as convolution in terms of spherical functions where \f$L_i^{indirect}(l)\f$ is target and \f$\overline{\cos}\theta_l\f$ is core.
-This integral may seem independent but in fact hemisphere is oriented related to \f$n\f$ therefore \f$\overline{\cos}\theta_l\f$ depends on it too and became a kind of 'oriented' version of cosine.
-That is pretty tricky and explanation about meaning of convolution on sphere is out of scope of this paper.
-Fact that this is convolution analogue related to \f$n\f$ is enough for now.
-The goal of looking at integral from this angle is using of convolution's trait allowing to compute decomposition using just only coefficients of function and core.
-\f$\overline{\cos}\theta_l\f$ is independent from \f$\phi_l\f$ and in case of such radial symmetric cores the resulting coefficients boil down to following formula:
-
-\f[(L_i^{indirect}(l) \ast \overline{\cos}\theta_l)_i^j = \frac{1}{K_i^0}L_i^j\, c_i^0 = \sqrt{\frac{4\pi}{2i+1}}L_i^j\, c_i^0\f]
-
-Where \f$c_i^0\f$ are spherical harmonics factors corresponding to \f$\overline{\cos}\theta\f$.
-Therefore the final decomposition looks like:
-
-\f[\int\limits_{H(n)} L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l = \int\limits_S L_i^{indirect}(l)\overline{\cos}\theta_l\, \mathrm{d}l = \sum_{i=0}^\infty \sum_{j = -i}^i \sqrt{\frac{4\pi}{2i+1}}L_i^j\, c_i^0\, y_i^j(n)\f]
-
-\f$c_i^0\f$ is left to be found.
-Due to independence from \f$\phi\f$ all \f$c_i^{j \neq 0} = 0\f$.
-The rest ones are calculated by regular dot product with basis functions:
-
-\f[c_i^0 = c_i = \int\limits_S y_i^0(l)\, \overline{\cos}\theta_l\, \mathrm{d}l = \int\limits_0^{2\pi} \mathrm{d}\phi \int\limits_0^\pi y_i^0(\theta, \phi)\, \overline{\cos}\theta \sin\theta\, \mathrm{d}\theta = \int\limits_0^{2\pi} \mathrm{d}\phi \int\limits_0^\frac{\pi}{2} y_i^0(\theta, \phi)\, \cos\theta\sin\theta\, \mathrm{d}\theta = \f]
-
-\f[= 2\pi\int\limits_0^\frac{\pi}{2} y_i^0(\theta, \phi)\, \cos\theta\sin\theta\, \mathrm{d}\theta = 2\pi K_i^0\int\limits_0^\frac{\pi}{2} P_i^0(\cos\theta)\, \cos\theta\sin\theta\, \mathrm{d}\theta\f]
-
-\f$\sin\theta\f$ appears due to transfer from integral over sphere to double integral where \f$\mathrm{d}l = \sin\theta\, \mathrm{d}\theta\, \mathrm{d}\phi\f$.
-There is an analytical solution for this expressions:
-
-\f[c_1 = \sqrt{\frac{\pi}{3}}\f]
-
-\f[c_{odd} = 0 \quad c_{even} = 2\pi\sqrt{\frac{2i+1}{4\pi}}\frac{(-1)^{\frac{i}{2}-1}}{(i+2)(i-1)}\frac{i!}{2^i\left(\frac{i!}{2}\right)^2}\f]
-
-Starting from about the third \f$c_i\f$ the coefficients become less and less valuable so that only couple of them is enough in order to approximate \f$\overline{\cos}\theta\f$ with appropriate accuracy.
-The same principle is true for convolution too because its coefficients are multiplied by \f$c_i\f$.
-So there is no need to use more than even three bands (\f$i = 0, 1, 2\f$) of basis functions.
-Lets write down them all in Cartesian coordinate system:
-
-\f[y_0^0 = \frac{1}{2}\sqrt{\frac{1}{\pi}} = Y_0^0\f]
-
-\f[y_1^{-1} = -\frac{1}{2}\sqrt{\frac{3}{\pi}}y = Y_1^{-1}y\f]
-\f[y_1^0 = \frac{1}{2}\sqrt{\frac{3}{\pi}}z = Y_1^0z\f]
-\f[y_1^1 = -\frac{1}{2}\sqrt{\frac{3}{\pi}}x = Y_1^1x\f]
-
-\f[y_2^{-2} = \frac{1}{2}\sqrt{\frac{15}{\pi}}xy = Y_2^{-2}xy\f]
-\f[y_2^{-1} = -\frac{1}{2}\sqrt{\frac{15}{\pi}}yz = Y_2^{-1}yz\f]
-\f[y_2^0 = \frac{1}{4}\sqrt{\frac{5}{\pi}}(3z^2-1) = Y_2^0(3z^2-1)\f]
-\f[y_2^1 = -\frac{1}{2}\sqrt{\frac{15}{\pi}}xz = Y_2^1xz\f]
-\f[y_2^2 = \frac{1}{4}\sqrt{\frac{15}{\pi}}(x^2-y^2) = Y_2^2(x^2-y^2)\f]
-
-All \f$Y_i^j\f$ are just constants so that it can be moved from integral during calculations and can be taken from precomputed table.
-Other constants related to \f$c_i\f$ can be united and also be calculated beforehand:
-
-\f[\hat{c}_i = \frac{1}{K_i^0}\, c_i = \sqrt{\frac{4\pi}{2i+1}}\, c_i\f]
-
-Finally expression of irradiance map approximation can be defined:
-
-\f[\int\limits_{H(n)} L_i^{indirect}(l) \cos\theta_l\, \mathrm{d}l \approx \sum_{i=0}^2 \sum_{j=-i}^i L_i^j\, \hat{c}_i\, y_i^j(n)\f]
-
-Where \f$\hat{c}_i\f$ is precalculated constants \f$y_i^j(n)\f$ are pretty easy functions and only \f$L_i^j\f$ are needed to be precomputed.
-Of course \f$L_i^j\f$ are integrals over even whole sphere but now there is only nine of it instead of one for every pixel of omnidirectional image.
-Moreover, texture is not needed at all in that case and only 9 colors representing \f$L_i^j\f$ have to be saved.
-The Monte-Carlo algorithm can be applied with just uniform samples distribution without importance sampling at all.
-\f$Y_i^j\f$ are used twice: in \f$L_i^j\f$ calculations and in sum after that.
-So there is sense to store only squares of it.
-All tables with constants presented below:
-
-| |
-|-|
-| \f$(Y_0^0)^2 \approx (0.282095)^2\f$ |
-| \f$(Y_1^{-1})^2 = (Y_1^0)^2 = (Y_1^1)^2 \approx (0.488603)^2\f$ |
-| \f$(Y_2^{-2})^2 = (Y_2^{-1})^2 = (Y_2^1)^2 \approx (1.092548)^2\f$ |
-| \f$(Y_2^0)^2 \approx (0.315392)^2\f$ |
-| \f$(Y_2^2)^2 \approx (0.546274)^2\f$ |
-
-| | |
-|-|-|
-| \f$\hat{c}_0\f$ | \f$3.141593\f$ |
-| \f$\hat{c}_1\f$ | \f$2.094395\f$ |
-| \f$\hat{c}_2\f$ | \f$0.785398\f$ |
-
-Summarizing all mathematics above spherical harmonics decomposition boils down irradiance map to only 9 values which is needed to be precalculated as integrals.
-As practice shows this is very good approximation of diffuse indirect illumination component.
-
-# Transparent materials
-
-TODO
-
-# Low discrepancy sequence
-
-TODO
--- a/dox/overview/images/sample_webgl.png
+++ b/dox/overview/images/sample_webgl.png
--- a/dox/overview/overview.md
+++ b/dox/overview/overview.md
@@ -32,7 +32,7 @@ Open CASCADE Technology is free software; you can redistribute it and / or modif
@ref license_lgpl_21 "GNU Lesser General Public License (LGPL) version 2.1", with additional @ref occt_lgpl_exception "exception".

 Note that LGPL imposes some obligations on the application linked with Open CASCADE Technology.
-If you wish to use OCCT in a proprietary application, please pay a special attention to address the requirements of LGPL section 6.
+If you wish to use OCCT in a proprietary application, please, pay special attention to address the requirements of LGPL section 6.
 At minimum the following should be considered:
 1. Add the notice visible to the users of your application clearly stating that Open CASCADE Technology is used in this application, and that they have rights in this regard according to LGPL. 
   Such notice can be added in About dialog box (this is mandatory if this box contains copyright statements) or a similar place and/or in the documentation. 
@@ -55,7 +55,7 @@ disclaimer.

 You are hereby informed that all software is a property of its respective authors and is protected by 
 international and domestic laws on intellectual property and trademarks. 
-Should you need further information, directly contact the authors.
+Should you need further information, please directly contact the authors.

 **CAS.CADE** and **Open CASCADE** are registered trademarks of 
 OPEN CASCADE S.A.S.
@@ -80,7 +80,7 @@ and, in case you need any further information, directly contact their authors.
 **Qt** is a cross-platform application framework that is widely used for developing application software 
 with graphical user interface (GUI). Qt is free and open source software distributed under 
 the terms of the GNU Lesser General Public License. In OCCT Qt is used for programming samples. 
-If you need further information on Qt, refer to Qt Homepage (https://www.qt.io/)
+If you need further information on Qt, please, refer to Qt Homepage (https://www.qt.io/)

 **Tcl** is a high-level programming language. Tk is a graphical user interface (GUI) toolkit, 
 with buttons, menus, listboxes, scrollbars, and so on. Taken together Tcl and Tk provide a solution 
@@ -88,7 +88,7 @@ to develop cross-platform graphical user interfaces with a native look and feel.
 Scriptics Corp., Sun Microsystems, and other companies. However, Tcl/Tk is an open source, and 
 the copyright allows you to use, modify, and redistribute Tcl/Tk for any purpose, without an 
 explicit license agreement and without paying any license fees or royalties. 
-To use Tcl/Tk, refer to the Licensing Terms (https://www.tcl.tk/software/tcltk/license.html).
+To use Tcl/Tk, please refer to the Licensing Terms (https://www.tcl.tk/software/tcltk/license.html).

 **FreeType 2** is developed by Antoine Leca, David Turner, Werner Lemberg and others. 
 It is a software font engine that is designed to be small, efficient, highly customizable and 
@@ -109,18 +109,18 @@ implementation of 3D viewer. OpenGL specification is developed by the
 Khronos group, https://www.khronos.org/opengl/. OCCT code includes header 
 file *glext.h* obtained from Khronos web site.

-**VTK** -- The **Visualization Toolkit (VTK)** is an open-source, freely available software system for 3D computer graphics, image processing and visualization. OCCT VIS component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library. If you need further information on VTK, refer to VTK Homepage https://www.vtk.org/.
+**VTK** -- The **Visualization Toolkit (VTK)** is an open-source, freely available software system for 3D computer graphics, image processing and visualization. OCCT VIS component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library. If you need further information on VTK, please, refer to VTK Homepage http://www.vtk.org/.

 **Doxygen** developed by Dimitri van Heesch is open source documentation system for 
 C++, C, Java, Objective-C, Python, IDL, PHP and C#. This product is used in Open CASCADE Technology 
 for automatic creation of Technical Documentation from C++ header files. 
-If you need further information on Doxygen, refer to https://www.stack.nl/~dimitri/doxygen/index.html.
+If you need further information on Doxygen, please refer to https://www.stack.nl/~dimitri/doxygen/index.html.

 **Graphviz** is open source graph visualization software developed by John Ellson, Emden Gansner, Yifan Hu and Arif Bilgin. 
 Graph visualization is representiation of structured information as diagrams of abstract graphs and networks. 
 This product is used together with Doxygen in Open CASCADE Technology for automatic creation of Technical Documentation 
 (generation of dependency graphs). Current versions of Graphviz are licensed on an open source 
-basis under The Eclipse Public License (EPL) (https://www.graphviz.org/license/).
+basis under The Eclipse Public License (EPL) (http://www.graphviz.org/License.php).

 **Inno Setup** is a free script-driven installation system created in CodeGear Delphi by Jordan Russell. 
 In OCCT Inno Setup is used to create Installation Wizard on Windows. 
@@ -130,10 +130,10 @@ It is licensed under Inno Setup License (http://www.jrsoftware.org/files/is/lice
 and others used by multimedia applications. This library is developed by Hervé Drolon and Floris van den Berg. 
 FreeImage is easy to use, fast, multithreading safe, compatible with all 32-bit or 64-bit versions of Windows, 
 and cross-platform (works both with Linux and Mac OS X). FreeImage is optionally used by OCCT to work
-with images, on conditions of the FreeImage Public License (FIPL) (https://freeimage.sourceforge.net/freeimage-license.txt).
+with images, on conditions of the FreeImage Public License (FIPL) (http://freeimage.sourceforge.net/freeimage-license.txt).

 **David M. Gay's floating point routines** (dtoa.c) are used for fast reading of floating point values from text strings.
-These routines are available under MIT-like license (see https://www.netlib.org/fp/).
+These routines are available under MIT-like license (see http://www.netlib.org/fp/).

 **CMake** is an open-source, cross-platform family of tools designed to build, test and package software. CMake is used to control the software compilation process using simple platform and compiler independent configuration files, and generate native makefiles and workspaces that can be used in the compiler environment of your choice. 
 OCCT uses CMake as a build system. CMake is available under BSD 3-Clause license. See more at https://cmake.org/
@@ -150,12 +150,6 @@ FFmpeg is optionally used by OCCT for video recording, on LGPL conditions (https
 for generation of User and Developer Guides in PDF format. See https://miktex.org for information
 on this tool.

-**RapidJSON** is an Open Source JSON parser and generator for C++.
-RapidJSON is optionally used by OCCT for reading glTF files (https://rapidjson.org/).
-
-**DejaVu** fonts are a font family based on the Vera Fonts under a permissive license (MIT-like, https://dejavu-fonts.github.io/License.html).
-DejaVu Sans (basic Latin sub-set) is used by OCCT as fallback font when no system font is available.
-
 Adobe Systems, Inc. provides **Adobe Reader**, which can be used to view files in Portable Document Format (PDF). 

@section OCCT_OVW_SECTION_3 Documentation
@@ -210,13 +204,13 @@ for which OCCT is certified to work.

 | OS        | Compiler |
 | --------- | ----------- |
-| Windows   | Microsoft Visual Studio: 2008 SP1, 2010 SP1, 2012 Update 4, 2013 Update 5, 2015 Update 3, 2017 <sup>1</sup>, 2019 <br>, LLVM (ClangCL), GCC 4.3+ (Mingw-w64)|
+| Windows   | Microsoft Visual Studio: 2008 SP1, 2010 SP1<sup>1</sup>, 2012 Update 4, 2013 Update 5, 2015, 2017 <br> GCC 4.3+ (Mingw-w64)|
 | Linux     | GNU gcc 4.3+ <br> LLVM CLang 3.6+ |
 | OS X / macOS | XCode 6 or newer |
 | Android   | NDK r10, GNU gcc 4.8 or newer |
-| Web       | Emscripten SDK 1.39 or newer (CLang) |

-1) VC++ 141 64-bit is used for regular testing and for building binary package of official release of OCCT on Windows.
+1) VC++ 10 64-bit is used for regular testing and for building 
+  binary package of official release of OCCT on Windows.

@subsection overview_req_libs Third-party libraries

@@ -228,9 +222,8 @@ for which OCCT is certified to work.
 | Freetype (for text rendering) | FreeType 2.4.11-2.7.1 https://sourceforge.net/projects/freetype/files/ |
 | FreeImage (optional, for support of common 2D graphic formats) | FreeImage 3.17.0+ https://sourceforge.net/projects/freeimage/files |
 | FFmpeg (optional, for video recording) | FFmpeg 3.1+ https://www.ffmpeg.org/download.html |
-| RapidJSON (optional, for reading glTF) | RapidJSON 1.1+ https://rapidjson.org/ |
 | Intel TBB (optional, for multithreaded algorithms) | TBB 4.x or 5.x https://www.threadingbuildingblocks.org/ |
-| VTK (for VTK Integration Services | VTK 6.1+ https://www.vtk.org/download/ |
+| VTK (for VTK Integration Services | VTK 6.1+ http://www.vtk.org/download/ |
 | Doxygen (optional for building documentation) | Doxygen 1.8.5+ https://www.stack.nl/~dimitri/doxygen/download.html |

@subsection overview_req_hw Hardware
@@ -288,13 +281,13 @@ When the installation is complete, you will find the directories for 3rd party p

@figure{/overview/images/overview_3rdparty.png}

-The contents of the OCCT-7.4.0 directory (called further "OCCT root", or $CASROOT) are as follows:
+The contents of the OCCT-7.3.0 directory (called further "OCCT root", or $CASROOT) are as follows:

@figure{/overview/images/overview_installation.png, "The directory tree"}

  * **adm**   This folder contains administration files, which allow rebuilding OCCT;
  * **adm/cmake**  This folder contains files of CMake building procedure;
-  * **adm/msvc**  This folder contains Visual Studio projects for Visual C++ 2010, 2012, 2013, 2015, 2017 and 2019 which allow rebuilding OCCT under Windows platform in 32 and 64-bit mode;
+  * **adm/msvc**  This folder contains Visual Studio projects for Visual C++ 2010, 2012, 2013, 2015 and 2017 which allow rebuilding OCCT under Windows platform in 32 and 64-bit mode;
  * **data**  This folder contains CAD files in different formats, which can be used to test the OCCT functionality;
  * **doc**  This folder contains OCCT documentation in HTML and PDF format;
  * **dox**  This folder contains sources of OCCT documentation in plain text (MarkDown) format;
@@ -313,7 +306,7 @@ To run any Open CASCADE Technology application you need to set the environment v

 You can define the environment variables with env.bat script located in the 
 $CASROOT folder. This script accepts two arguments to be used: 
-the version of Visual Studio (vc10 -- vc142) and the architecture (win32 or win64).
+the version of Visual Studio (vc10 -- vc141) and the architecture (win32 or win64).

 The additional environment settings necessary for compiling OCCT libraries and samples 
 by Microsoft Visual Studio can be set using script custom.bat located in the same folder. 
@@ -336,7 +329,7 @@ The scripts are located in the OCCT root folder.

  * **CASROOT** is used to define the root directory of Open CASCADE Technology;
  * **PATH** is required to define the path to OCCT binaries and 3rdparty folder;
-  * **LD_LIBRARY_PATH** is required to define the path to OCCT libraries (on UNIX platforms only; **DYLD_LIBRARY_PATH** variable in case of macOS);
+  * **LD_LIBRARY_PATH** is required to define the path to OCCT libraries (on UNIX platforms only);
  * **MMGT_OPT** (optional) if set to 1, the memory manager performs optimizations as described below; if set to 2, 
    Intel (R) TBB optimized memory manager is used; if 0 (default), every memory block is allocated 
    in C memory heap directly (via malloc() and free() functions). 
@@ -403,7 +396,7 @@ the specified resource file and activates the commands implemented in the plug-i
 The whole process of using the plug-in mechanism as well as the instructions for extending Test Harness is described in the @ref occt_user_guides__test_harness.

 Draw Test Harness provides an environment for OCCT automated testing system. 
-Check its @ref occt_dev_guides__tests "Automated Testing System" for details.
+Please, consult its @ref occt_dev_guides__tests "Automated Testing System" for details.

 Remarks:

@@ -417,7 +410,8 @@ Remarks:

 **On Linux:**

-* If OCCT was built by Code::Blocks  use <i>$CASROOT/draw.sh</i> file to launch *DRAWEXE* executable.
+1. If OCCT was built by Code::Blocks  use <i>$CASROOT/draw_cbp.sh</i> file to launch *DRAWEXE* executable;
+2. If OCCT was built by Automake    use <i>$CASROOT/draw_amk.sh</i> file to launch *DRAWEXE* executable;

 Draw[1]> prompt appears in the command window

@@ -573,11 +567,3 @@ There is a sample demonstrating usage of OCCT on iOS with Apple UIKit framework.
@figure{/overview/images/sample_ios_uikit.png}

 See \subpage occt_samples_ios_uikit "iOS sample Readme" for details.
-
-@subsubsection OCCT_OVW_SECTION_7_3_6 Web
-
-WebGL Viewer sample demonstrating usage of OCCT 3D Viewer in Web browser with Emscripten SDK can be found in `samples/webgl`.
-
-@figure{/overview/images/sample_webgl.png}
-
-See \subpage occt_samples_webgl "WebGL sample Readme" for details.
--- a/dox/resources/occ_logo.png
+++ b/dox/resources/occ_logo.png
--- a/dox/resources/occt_rm.doxyfile
+++ b/dox/resources/occt_rm.doxyfile
@@ -23,7 +23,7 @@ WARNINGS               = NO
 ENABLE_PREPROCESSING   = YES
 MACRO_EXPANSION        = YES
 EXPAND_ONLY_PREDEF     = YES
-PREDEFINED             = Standard_EXPORT Standard_NODISCARD Standard_OVERRIDE:=override __Standard_API __Draw_API Handle(a):=Handle<a> DEFINE_STANDARD_ALLOC DEFINE_NCOLLECTION_ALLOC "Standard_DEPRECATED=//! @deprecated "
+PREDEFINED             = Standard_EXPORT Standard_OVERRIDE:=override __Standard_API __Draw_API Handle(a):=Handle<a> DEFINE_STANDARD_ALLOC DEFINE_NCOLLECTION_ALLOC
 GENERATE_HTML          = YES
 GENERATE_LATEX         = NO
 SEARCH_INCLUDES        = YES
--- a/dox/resources/occt_ug_html.doxyfile
+++ b/dox/resources/occt_ug_html.doxyfile
@@ -16,6 +16,7 @@ WARNINGS               = YES
 WARN_IF_UNDOCUMENTED   = YES
 WARN_IF_DOC_ERROR      = YES
 WARN_NO_PARAMDOC       = NO
+WARN_FORMAT            = \\$file:\$line: \$text\
 INPUT_ENCODING         = UTF-8
 FILE_PATTERNS          = *.md *.dox 
 RECURSIVE              = YES
@@ -55,6 +56,6 @@ USE_MATHJAX            = YES
 MATHJAX_FORMAT         = HTML-CSS

 # Define alias for inserting images in uniform way (both HTML and PDF)
-ALIASES += figure{1}="\image html \1"
-ALIASES += figure{2}="\image html \1 \2"
-ALIASES += figure{3}="\image html \1 \2"
+ALIASES += figure{1}="\image html \1 \n"
+ALIASES += figure{2}="\image html \1 \2 \n"
+ALIASES += figure{3}="\image html \1 \2 \n"
--- a/dox/resources/occt_ug_pdf.doxyfile
+++ b/dox/resources/occt_ug_pdf.doxyfile
@@ -16,6 +16,7 @@ WARNINGS               = YES
 WARN_IF_UNDOCUMENTED   = YES
 WARN_IF_DOC_ERROR      = YES
 WARN_NO_PARAMDOC       = NO
+WARN_FORMAT            = \\$file:\$line: \$text\
 INPUT_ENCODING         = UTF-8
 FILE_PATTERNS          = *.md *.dox 
 RECURSIVE              = YES
--- a/dox/technical_overview/technical_overview.md
+++ b/dox/technical_overview/technical_overview.md
@@ -26,7 +26,7 @@ This modular structure is illustrated in the diagram below.
 * @ref OCCT_TOVW_SECTION_2 "Foundation Classes" module underlies all other OCCT classes; 
 * @ref OCCT_TOVW_SECTION_3 "Modeling Data" module supplies data structures to represent 2D and 3D geometric primitives and their compositions into CAD models; 
 * @ref OCCT_TOVW_SECTION_4 "Modeling Algorithms" module contains a vast range of geometrical and topological algorithms;
-  * @ref OCCT_TOVW_SECTION_4a "Mesh" toolkit from "Modeling Algorithms" module implements tessellated representations of objects;
+* @ref OCCT_TOVW_SECTION_4a "Mesh" module implements tessellated  representations of objects;
 * @ref OCCT_TOVW_SECTION_5 "Visualization" module provides complex mechanisms for graphical data representation;
 * @ref OCCT_TOVW_SECTION_6 "Data Exchange" module inter-operates with popular data formats and relies on @ref OCCT_TOVW_SECTION_6a "Shape Healing" to improve compatibility between CAD software of different vendors;
 * @ref OCCT_TOVW_SECTION_7 "Application Framework" module offers ready-to-use solutions for handling application-specific data (user attributes) and commonly used functionality (save/restore, undo/redo, copy/paste, tracking CAD modifications, etc). 
@@ -38,207 +38,196 @@ In addition, @ref OCCT_TOVW_SECTION_8 "Open CASCADE Test Harness", also called D
 **Foundation Classes** module contains data structures and services used by higher-level Open CASCADE Technology classes:

  * Primitive types, such as Boolean, Character, Integer or Real;
-  * String classes that handle Unicode strings;
+  * String classes that handle ASCII and Unicode strings;
  * Collection classes that handle statically or dynamically sized aggregates of data, such as arrays, lists, queues, sets and hash tables (data maps).
  * Classes providing commonly used numerical algorithms and basic linear algebra calculations (addition, multiplication, transposition of vectors and matrices, solving linear systems etc).
-  * Fundamental types like color, date and time information;
+  * Fundamental types representing physical quantities and supporting date and time information;
  * Primitive geometry types providing implementation of basic geometric and algebraic entities that define and manipulate elementary data structures. 
  * Exception classes that describe situations, when the normal execution of program is abandoned;

 This module also provides a variety of general-purpose services, such as:
  * Safe handling of dynamically created objects, ensuring automatic deletion of unreferenced objects (smart pointers);
-  * Standard and specialized memory allocators;
+  * Configurable optimized memory manager increasing the performance of applications that intensively use dynamically created objects;
  * Extended run-time type information (RTTI) mechanism maintaining a full type hierarchy and providing means to iterate over it;
  * Encapsulation of C++ streams;
+  * Automated management of heap memory by means of specific allocators;
  * Basic interpreter of expressions facilitating the creation of customized scripting tools, generic definition of expressions, etc.;
-  * Tools for dealing with configuration resource files and customizable message files facilitating multi-language support in applications;
+  * Tools for dealing with configuration resource files and customizable message files facilitating  multi-language support in applications;
  * Progress indication and user break interfaces, giving a possibility even for low-level algorithms to communicate with the user in a universal and convenient way;
  * and many others...

-See the details in @ref occt_user_guides__foundation_classes "Foundation Classes User's Guide"
+Please, see the details in @ref occt_user_guides__foundation_classes "Foundation Classes User's Guide"

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

@section OCCT_TOVW_SECTION_3 Modeling Data

-**Modeling Data** supplies data structures to implement boundary representation (BRep) of objects in 3D.
-In BRep the shape is represented as an aggregation of geometry within topology.
-The geometry is understood as a mathematical description of a shape, e.g. as curves and surfaces (simple or canonical, Bezier, NURBS, etc).
-The topology is a data structure binding geometrical objects together.
+**Modeling Data** supplies data structures to implement boundary representation (BRep) of objects in 3D. In BRep the shape is represented as an aggregation of geometry within topology. The geometry  is understood as a mathematical description of a shape, e.g. as curves and surfaces (simple or canonical, Bezier, NURBS, etc). The topology is a data structure binding geometrical objects together.

 Geometry types and utilities provide geometric data structures and services for:
 * Description of points, vectors, curves and surfaces:
-   * their positioning in 3D space using axis or coordinate systems, and
-   * their geometric transformation, by applying translations, rotations, symmetries, scaling transformations and combinations thereof.
+	 * their positioning in 3D space using axis or coordinate systems, and
+	 * their geometric transformation, by applying translations, rotations, symmetries, scaling transformations and combinations thereof.
 * Creation of parametric curves and surfaces by interpolation and approximation;
 * Algorithms of direct construction; 
 * Conversion of curves and surfaces to NURBS form;
 * Computation of point coordinates on 2D and 3D curves; 
 * Calculation of extrema between geometric objects. 
  
-Topology defines relationships between simple geometric entities.
-A shape, which is a basic topological entity, can be divided into components (sub-shapes):
+Topology defines relationships between simple geometric entities.  A shape, which is a basic topological entity, can be divided into components (sub-shapes):
 * Vertex -- a zero-dimensional shape corresponding to a point;
 * Edge -- a shape corresponding to a curve and bounded by a vertex at each extremity;
 * Wire -- a sequence of edges connected by their vertices;
 * Face -- a part of a plane (in 2D) or a surface (in 3D) bounded by wires;
 * Shell -- a collection of faces connected by edges of their wire boundaries;
 * Solid -- a finite closed part of 3D space bounded by shells;
- * Composite solid -- a collection of solids connected by faces of their shell boundaries;
- * Compound -- a collection of shapes of arbitrary type.
+ * Compound solid -- a collection of solids connected by faces of their shell boundaries.

-Complex shapes can be defined as assemblies (compounds) of simpler entities.
+Complex shapes can be defined as assemblies of simpler entities.

-See the details in @ref occt_user_guides__modeling_data "Modeling Data User's Guide"
+Please, see the details in @ref occt_user_guides__modeling_data "Modeling Data User's Guide"

 3D geometric models can be stored in OCCT native BREP format.
 See @ref occt_user_guides__brep_wp "BREP Format Description White Paper" for details on the format.

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

@section OCCT_TOVW_SECTION_4 Modeling Algorithms

-**Modeling Algorithms** module groups a wide range of topological and geometric algorithms used in geometric modeling.
-Basically, there are two groups of algorithms in Open CASCADE Technology:
- * High-level modeling routines used in the real design;
- * Low-level mathematical support functions used as a groundwork for the modeling API.
+**Modeling Algorithms** module groups a wide range of topological and geometric algorithms used in geometric modeling. Basically, there are two groups of algorithms in Open CASCADE Technology:
+* High-level modeling routines used in the real design;
+* Low-level mathematical support functions used as a groundwork for the modeling API;

-Low-level *geometric tools* provide the algorithms, which:
- * Calculate the intersection of two curves, surfaces, or a curve and a surface;
- * Project points onto 2D and 3D curves, points onto surfaces and 3D curves onto surfaces;
- * Construct lines and circles from constraints;
- * Construct free-form curves and surfaces from constraints (interpolation, approximation, skinning, gap filling, etc).
+* Low-level geometric tools provide the algorithms, which:
+	* Calculate the intersection of two curves, surfaces, or a curve and a surface;
+	* Project points onto 2D and 3D curves, points onto surfaces and 3D curves onto surfaces;
+	* Construct lines and circles from constraints;
+	* Construct free-form curves and surfaces from constraints (interpolation, approximation, skinning, gap filling, etc);
  
-Low-level *topological tools* provide the algorithms, which:
- * Tessellate shapes;
- * Check correct definition of shapes;
- * Determine the local and global properties of shapes (derivatives, mass-inertia properties, etc);
- * Perform affine transformations;
- * Find planes in which edges are located;
- * Convert shapes to NURBS geometry;
- * Sew connected topologies (shells and wires) from separate topological elements (faces and edges).
+* Low-level topological tools provide the algorithms, which:
+	* Tessellate shapes; 
+	* Check correct definition of shapes; 
+	* Determine the local and global properties of shapes (derivatives, mass-inertia properties, etc); 
+	* Perform affine transformations;
+	* Find planes in which edges are located;
+	* Convert shapes to NURBS geometry;
+	* Sew connected topologies (shells and wires) from separate topological elements (faces and edges).

 Top-level API provides the following functionality: 
- * Construction of Primitives:
-   * Boxes;
-   * Prisms;
-   * Cylinders;
-   * Cones;
-   * Spheres;
-   * Toruses.
- * Kinematic Modeling:
-   * Prisms -- linear sweeps;
-   * Revolutions -- rotational sweeps;
-   * Pipes -- general-form sweeps;
-   * Lofting.
+
+* Construction of Primitives:  
+	* Boxes;
+	* Prisms;
+	* Cylinders;
+	* Cones;
+	* Spheres;
+	* Toruses.
+* Kinematic Modeling: 
+	* Prisms -- linear sweeps;
+	* Revolutions -- rotational sweeps;
+	* Pipes -- general-form sweeps;
+	* Lofting.

@figure{/technical_overview/images/0001.png "Shapes containing pipes with variable radius produced by sweeping"}

- * Boolean Operations, which allow creating new shapes from the combinations of source shapes. For two shapes *S1* and *S2*:
-   * *Common* contains all points that are in *S1* and *S2*;
-   * *Fuse* contains all points that are in *S1* or *S2*;
-   * *Cut* contains all points in that are in *S1* and not in *S2*.
-
+* Boolean Operations, which allow creating new shapes from the combinations of source shapes. For two shapes *S1* and *S2*:
+  * *Common* contains all points that are in *S1* and *S2*;
+  * *Fuse* contains all points that are in *S1* or *S2*;
+  * *Cut* contains all points in that are in *S1* and not in *S2*
+   
 See @ref occt_user_guides__boolean_operations "Boolean Operations" User's Guide for detailed documentation.

- * Algorithms for local modifications such as:
-   * Hollowing;
-   * Shelling;
-   * Creation of tapered shapes using draft angles;
-   * Algorithms to make fillets and chamfers on shape edges, including those with variable radius (chord).
+* Algorithms for local modifications such as: 
+  * Hollowing; 
+  * Shelling; 
+  * Creation of tapered shapes using draft angles;
+  * Algorithms to make fillets and chamfers on shape edges, including those with variable radius (chord). 

- * Algorithms for creation of mechanical features, i.e. depressions, protrusions, ribs and grooves or slots along planar or revolution surfaces.
+* Algorithms for creation of mechanical features, i.e. depressions, protrusions, ribs and grooves or slots along planar or revolution surfaces. 

@figure{/technical_overview/images/0004.png}
 
-See the details in @ref occt_user_guides__modeling_algos "Modeling Algorithms User's Guide".
+Please, see the details in @ref occt_user_guides__modeling_algos "Modeling Algorithms User's Guide".

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

-@subsection OCCT_TOVW_SECTION_4a Mesh
+@section OCCT_TOVW_SECTION_4a Mesh 

-**Mesh** toolkit provides the functionality to work with tessellated representations of objects in form of triangular facets. This toolkit contains:
+**Mesh** module provides the functionality to work with tessellated  representations of objects in form of triangular facets. This module contains:
 - data structures to store surface mesh data associated to shapes and basic algorithms to handle them;
- data structures and algorithms to build triangular surface mesh from *BRep* objects (shapes);
+- data structures and algorithms to a build triangular surface mesh from *BRep* objects (shapes);
 - tools for displaying meshes with associated pre- and post-processor data (scalars or vectors).

+Open CASCADE Technology includes two mesh converters:
+- VRML converter translates Open CASCADE shapes to VRML 1.0 files (Virtual Reality Modeling Language). Two representation modes are possible: shaded, which presents shapes as sets of triangles computed by the mesh algorithm, or wireframe, which presents shapes as sets of curves.
+- STL converter translates Open CASCADE shapes to STL files. STL (STtereoLithography) format is widely used for rapid prototyping (3D printing).
+
 Open CASCADE SAS also offers Advanced Mesh Products:
- <a href="https://www.opencascade.com/content/mesh-framework">Open CASCADE Mesh Framework (OMF)</a>
- <a href="https://www.opencascade.com/content/express-mesh">Express Mesh</a>
+- <a href="http://www.opencascade.com/content/mesh-framework">Open CASCADE Mesh Framework (OMF)</a>
+- <a href="http://www.opencascade.com/content/express-mesh">Express Mesh</a>

@figure{/technical_overview/images/0003.png}

@section OCCT_TOVW_SECTION_5 Visualization

-**Visualization** module provides ready-to-use algorithms to create graphic presentations from various objects: shapes, meshes, etc.
+**Visualization** module provides ready-to-use  algorithms to create graphic presentations from various objects: shapes, meshes, etc. 
+
+In Open CASCADE Technology visualization is based on the separation of CAD data and its graphical presentation. The presentations can be customized to take the specificity of your application into account.

-In Open CASCADE Technology visualization is based on the separation of CAD data and its graphical presentation.
 The module also supports a fast and powerful interactive selection mechanism. 

-Visualization module relies on the following key toolkits:
- *TKV3d* toolkit defines a high-level API called (Application Interactive Services* (AIS) for working with interactive objects.
- *TKService* toolkit defines a low-level API for managing and creating presentations from primitive arrays.
-  This toolkit defines an abstraction layer for defining an arbitrary graphic driver responsible for actual rendering.
- *TKOpenGl* toolkit implements the graphic driver using OpenGL and OpenGL ES libraries.
+The view facilities provided by OCCT range from low-level tools working with basic geometry and topology (such as NURBS visualization with control points and nodes, rendering of isolines to estimate speed and quality of parameterization, or rendering of a parametric profile of edges) to high-level tools for real time quality rendering of models using ray tracing: shades, reflections, transparency, anti-aliasing, etc.

-While low-level API operates with primitive arrays (triangles, lines, points), the higher level includes services for building presentations for B-Rep shapes (shaded and wireframe).
-A comprehensive list of standard interactive objects includes topological shape, mesh presentation, various dimensions, manipulators and others.
-It provides a solid basis for rapid application development, while flexible and extensible API allows development of highly customized application-specific presentations.
+Here are just a few examples:

-Here are a few examples of OCCT Visualization features:
-* Camera-driven view projection and orientation.
-  Perspective, orthographic and stereographic projections are supported.
-* Support of Common (diffuse/ambient/specular) and PBR metallic-roughness material models.
-* Possibility to flexibly adjust appearance of dimensions in a 3D view.
-  The 3D text object represents a given text string as a true 3D object in the model space.
-* Definition of clipping planes through the plane equation coefficients.
-  Ability to define visual attributes for cross-section at the level or individual clipping planes.
-  In the image below different parts of the rocket are clipped with different planes and hatched.
-@figure{/technical_overview/images/0008.png, "Display of shape cross-section and dimensions"}
+* Camera-driven view projection and orientation. It is possible to choose between perspective, orthographic and stereographic projection. 
+
+* Real-time ray tracing technique using recursive Whitted's algorithm and Bounded Volume Hierarchy effective optimization structure. 
+
+@figure{/technical_overview/images/0002.png, "Real time visualization by ray tracing method"}
+
+* Support of GLSL shaders. The shader management is fully automatic, like with any other OpenGL resource.

-* Support of built-in and application-specific GLSL shaders.
@figure{/technical_overview/images/0013.png, "Fragment shader implementing custom clipping surface"}

-* Optimization of rendering performance through the algorithms of:
-  * View frustum culling, which skips the presentation outside camera at the rendering stage;
-  * Back face culling, which reduces the rendered number of triangles and eliminates artifacts at shape boundaries.
-* Real-time ray tracing technique using recursive Whitted's algorithm and Bounded Volume Hierarchy effective optimization structure.
-@figure{/technical_overview/images/0002.png, "Real time visualization by ray tracing method"}
+* Support of standard and custom materials, defined by transparency, diffuse, ambient and specular reflection and refraction index. The latter allows implementing transparent materials, such as glass, diamond and water. 
+
@figure{/technical_overview/images/0012.png, "Simulation of a glass cover"}

-For more details, see @ref occt_user_guides__visualization "Visualization User's Guide".
+* Optimization of rendering performance through the algorithms of: 
+	* View frustum culling, which skips the presentation outside camera at the rendering stage and  
+	* Back face culling, which reduces the rendered number of triangles and eliminates artifacts at shape boundaries. 
+	
+* Definition of clipping planes through the plane equation coefficients. Ability to define visual attributes for cross-section at the level or individual clipping planes. In the image below different parts of the rocket are clipped with different planes and hatched.
+
+* Possibility to flexibly adjust appearance of dimensions in a 3D view. The 3D text object represents a given text string as a true 3D object in the model space.
+
+@figure{/technical_overview/images/0008.png, "Display of shape cross-section and dimensions"}
+
+For more details see @ref occt_user_guides__visualization "Visualization User's Guide".

 The visualization of OCCT topological shapes by means of VTK library provided by VIS component is described in a separate @ref occt_user_guides__vis "VTK Integration Services" User's Guide.

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+

@section OCCT_TOVW_SECTION_6 Data Exchange

-**Data Exchange** allows developing OCCT-based applications that can interact with other CAD systems by writing and reading CAD models to and from external data.
+**Data Exchange** allows developing OCCT-based applications that can interact with other CAD systems by writing and reading CAD models to and from external data. The exchanges run smoothly regardless of the quality of external data or requirements to its internal representation, for example, to the data types, accepted geometric inaccuracies, etc.

@figure{/technical_overview/images/0014.png,"Shape imported from STEP"}

-**Data Exchange** is organized in a modular way as a set of interfaces that comply with various CAD formats: IGES, STEP, STL, VRML, etc.
-The interfaces allow software based on OCCT to exchange data with various CAD/PDM software packages, maintaining a good level of interoperability.
-This module handles various problems of interoperability between CAD systems, caused by differences in model validity criteria and requirements to internal representation.
+**Data Exchange** is organized in a modular way as a set of interfaces that comply with various CAD formats: IGES, STEP, STL, VRML, etc. The interfaces allow software based on OCCT to exchange data with various CAD/PDM software packages, maintaining a good level of interoperability.

-* **Standardized Data Exchange** interfaces allow querying and examining the input file, converting its contents to a CAD model and running validity checks on a fully translated shape.
-  The following formats are currently supported:
-  * @ref occt_user_guides__step "STEP" (AP203: Mechanical Design, this covers General 3D CAD; AP214: Automotive Design; AP242).
-  * @ref occt_user_guides__iges "IGES" (up to 5.3).
-  * **glTF** 2.0 reader and writer.
-  * **OBJ** mesh file reader.
-  * **VRML** converter translates Open CASCADE shapes to VRML 1.0 files (Virtual Reality Modeling Language).
-  * **STL** converter translates Open CASCADE shapes to STL files.
-    STL (STtereoLithography) format is widely used for rapid prototyping (3D printing).
+* **Standardized Data Exchange** interfaces allow querying and examining the input file, converting its contents to a CAD model and running validity checks on a fully translated shape. The following formats are currently supported.
+	* @ref occt_user_guides__step "STEP" (AP203 : Mechanical Design, this covers General 3D CAD; AP214: Automotive Design) 
+	* @ref occt_user_guides__iges "IGES" (up to 5.3) 
+	* VRML and STL meshes. 
 * @ref occt_user_guides__xde "Extended data exchange" (XDE) allows translating  additional attributes attached to geometric data (colors, layers, names, materials etc).
-* <a href="https://www.opencascade.com/content/advanced-data-exchange-components">Advanced Data Exchange Components</a>
-  are available in addition to standard Data Exchange interfaces to support interoperability and data adaptation (also using @ref OCCT_TOVW_SECTION_6a "Shape Healing") with CAD software using the following proprietary formats:
-	* <a href="https://www.opencascade.com/content/acis-sat-import-export">ACIS SAT</a>
-	* <a href="https://www.opencascade.com/content/parasolid-import">Parasolid</a>
-	* <a href="https://www.opencascade.com/content/dxf-import-export">DXF</a>
-	* <a href="https://www.opencascade.com/content/ifc-import">IFC</a>
-	* <a href="https://www.opencascade.com/content/jt-import-export">JT</a>
+* <a href="http://www.opencascade.com/content/advanced-data-exchange-components">Advanced Data Exchange Components</a> are available in addition to standard Data Exchange interfaces to support interoperability and data adaptation (also using @ref OCCT_TOVW_SECTION_6a "Shape Healing") with CAD software using the following proprietary formats:
+	* <a href="http://www.opencascade.com/content/acis-sat-import-export">ACIS SAT</a>
+	* <a href="http://www.opencascade.com/content/parasolid-import">Parasolid</a>
+	* <a href="http://www.opencascade.com/content/dxf-import-export">DXF</a> 

 These components are based on the same architecture as interfaces with STEP and IGES.

@@ -247,22 +236,22 @@ These components are based on the same architecture as interfaces with STEP and
 **Shape Healing** library provides algorithms to correct and adapt the geometry and topology of shapes imported to OCCT from other CAD systems. 

 Shape Healing algorithms include, but are not limited to, the following operations:
- * Analyze shape characteristics and, in particular, identify the shapes that do not comply with OCCT geometry and topology validity rules by analyzing geometrical objects and topology:
-   - check edge and wire consistency;
-   - check edge order in a wire;
-   - check the orientation of face boundaries;
-   - analyze shape tolerances;
-   - identify closed and open wires in a boundary.
- * Fix incorrect or incomplete shapes:
-   - provide consistency between a 3D curve and its corresponding parametric curve;
-   - repair defective wires;
-   - fit the shapes to a user-defined tolerance value;
-   - fill gaps between patches and edges.
- * Upgrade and change shape characteristics:
-   - reduce curve and surface degree;
-   - split shapes to obtain C1 continuity;
-   - convert any types of curves or surfaces to Bezier or B-Spline curves or surfaces and back;
-   - split closed surfaces and revolution surfaces.
+* analyze shape characteristics and, in particular, identify the shapes that do not comply with OCCT geometry and topology  validity rules by analyzing geometrical objects and topology: 
+	- check edge and wire consistency;
+	- check edge order in a wire;
+	- check the orientation of face boundaries;
+	- analyze shape tolerances;
+	- identify closed and open wires in a boundary.
+* fix incorrect or incomplete shapes:
+	- provide consistency between a 3D curve and its corresponding parametric curve;
+	- repair defective wires;
+	- fit the shapes to a user-defined tolerance value;
+	- fill gaps between patches and edges. 
+* upgrade and change shape characteristics:
+	- reduce curve and surface degree;
+	- split shapes to obtain C1 continuity;
+	- convert any types of curves or surfaces to Bezier or B-Spline curves or surfaces and back;
+	- split closed surfaces and revolution surfaces.

 Each sub-domain of Shape Healing has its own scope of functionality:

@@ -274,40 +263,36 @@ Each sub-domain of Shape Healing has its own scope of functionality:
 | Customization | Modifies the shape representation to fit specific needs. | The shape is not modified, only the mathematical form of its internal representation is changed. |
 | Processing | Mechanism of shape modification via a user-editable resource file. | |

-For more details, refer to @ref occt_user_guides__shape_healing "Shape Healing User's guide".
+For more details refer to @ref occt_user_guides__shape_healing "Shape Healing User's guide".
+
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

@section OCCT_TOVW_SECTION_7 Application Framework

-**Open CASCADE Application Framework** (OCAF) handles Application Data basing on the Application/Document paradigm.
-It uses an associativity engine to simplify the development of a CAD application thanks to the following ready-to-use features and services:
+**Open CASCADE Application Framework** (OCAF) handles Application Data basing on the Application/Document paradigm. It uses an associativity engine to simplify the development of a CAD application thanks to the following ready-to-use features and services:

 * Data attributes managing the application data, which can be organized according to the development needs; 
 * Data storage and persistence (open/save); 
-* Possibility to modify and recompute attributes in documents.
-  With OCAF it is easy to represent the history of modification and parametric dependencies within your model;
+* Possibility to modify and recompute attributes in documents. With OCAF it is easy to represent the history of modification and parametric dependencies within your model;
 * Possibility to manage multiple documents;  
 * Predefined attributes common to CAD/CAM/CAE applications (e.g. to store dimensions);
 * Undo-Redo and Copy-Paste functions.

 Since OCAF handles the application structure, the only development task is the creation of application-specific data and GUIs. 

-OCAF differs from any other CAD framework in the organization of application data, as there the data structures are based on reference keys rather than on shapes.
-In a model, such attributes as shape data, color and material are attached to an invariant structure, which is deeper than the shapes.
-A shape object becomes the value of *Shape* attribute, in the same way as an integer number is the value of *Integer* attribute and a string is the value of *Name* attribute.
+OCAF differs from any other CAD framework in the organization of application data, as there the data structures are based on reference keys rather than on shapes. In a model, such attributes as shape data, color and material are attached to an invariant structure, which is deeper than the shapes. A shape object becomes the value of *Shape* attribute, in the same way as an integer number is the value of *Integer* attribute and a string is the value of *Name* attribute.

 OCAF organizes and embeds these attributes in a document. OCAF documents, in their turn, are managed by an OCAF application.

-For more details, see @ref occt_user_guides__ocaf "OCAF User's Guide". 
+For more details see @ref occt_user_guides__ocaf "OCAF User's Guide". 
+
+See also: our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

-See also: our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

@section OCCT_TOVW_SECTION_8 Draw Test Harness

-**Test Harness** or **Draw** is a convenient testing tool for OCCT libraries.
-It can be used to test and prototype various algorithms before building an entire application.
-It includes:
+**Test Harness** or **Draw** is a convenient testing tool for OCCT libraries. It can be used to test and prototype various algorithms before building an entire application. It includes:
 - A command interpreter based on the TCL language;
 - A number of 2D and 3D viewers;
 - A set of predefined commands.
@@ -325,4 +310,4 @@ In addition, **Test Harness** provides commands to create and manipulate curves

 You can add custom commands to test or demonstrate any new functionalities, which you develop.

-For more details, see @ref occt_user_guides__test_harness "Draw Test Harness Manual".
+For more details see @ref occt_user_guides__test_harness "Draw Test Harness Manual".
--- a/dox/tutorial/tutorial.md
+++ b/dox/tutorial/tutorial.md
@@ -701,7 +701,7 @@ Congratulations! Your bottle is complete. Here is the result snapshot of the Tut
@figure{/tutorial/images/tutorial_image019.png,"",320}

 We hope that this tutorial has provided you with a feel for the industrial strength power of Open CASCADE Technology.
-If you want to know more and develop major projects using Open CASCADE Technology, we invite you to study our training, support, and consulting services on our site at https://www.opencascade.com/content/technology-support. Our professional services can maximize the power of your Open CASCADE Technology applications.
+If you want to know more and develop major projects using Open CASCADE Technology, we invite you to study our training, support, and consulting services on our site at http://www.opencascade.com/content/technology-support. Our professional services can maximize the power of your Open CASCADE Technology applications.


@section sec6 Appendix
--- a/dox/user_guides/boolean_operations/boolean_operations.md
+++ b/dox/user_guides/boolean_operations/boolean_operations.md
@@ -797,7 +797,7 @@ The General Fuse algorithm has a set of options, which allow speeding-up the ope
 * Usage of Oriented Bounding Boxes in the operation;
 * History support.

-For more detailed information on these options, see the @ref occt_algorithms_11a "Advanced options" section.
+For more detailed information on these options please see the @ref occt_algorithms_11a "Advanced options" section.

@subsection occt_algorithms_7_3b Usage

@@ -900,7 +900,7 @@ bbuild result

@subsection occt_algorithms_7_3 Examples

-Have a look at the examples to better understand the definitions.
+Please, have a look at the examples, which can help to better understand the definitions.

@subsubsection occt_algorithms_7_3_1	Case 1: Three edges intersecting at a point 

@@ -1891,21 +1891,6 @@ The input data for this step is as follows:
 | 2.3 |	Build solids <i>(SDi)</i> from *SFS*. |	*BOPAlgo_BuilderSolid* |
 | 2.4 |	Add the solids <i>(SDi)</i> to the result	| |

-@subsection occt_algorithms_bop_on_opensolids Boolean operations on open solids
-
-The Boolean operations on open solids are tricky enough that the standard approach of Boolean operations for building the result, based on the splits of solids does not work.
-It happens because the algorithm for splitting solids (*BOPAlgo_BuilderSolid*) always tries to create the closed loops (shells) and make solids from them. But if the input solid is not closed, what can be expected from its splits?
-For performing Boolean Operations on open solids another approach is used, which does not rely on the splits of the solids to be correct, but tries to select the splits of faces, which are necessary for the given type of operation.
-The point here is that the type of Boolean operation clearly defines the states for the faces to be taken into result:
- For **COMMON** operation all the faces from the arguments located inside any solid of the opposite group must be taken;
- For **FUSE** operation all the faces from the arguments located outside of all solids of the opposite group must be taken;
- For **CUT** operation all the faces from the Objects located outside of all solids of the Tools and all faces from the Tools located inside any solid of the Objects must be taken;
- For **CUT21** operation all the faces from the Objects located inside any solid of the Tools and all faces from the Tools located outside of all solids of the Objects must be taken.
-From the selected faces the result solids are built. Please note, that the result may contain as normal (closed) solids as the open ones.
-
-Even with this approach, the correct result of Boolean operation on open solids cannot be always guaranteed.
-This is explained by non-manifold nature of open solids: in some cases classification of a face depends on the point of the face chosen for classification.
-
@section occt_algorithms_10a Section Algorithm 

@subsection occt_algorithms_10a_1 Arguments
@@ -2443,7 +2428,7 @@ A lot of failures of GFA algorithm can be caused by bugs in low-level algorithms
 * The Projection Algorithm is used at the Intersection step. The purpose of Projection Algorithm is to compute 2D curves on surfaces. Wrong results here lead to incorrect or missing faces in the final GFA result. 
 * The Classification Algorithm is used at the Building step. The bugs in the Classification Algorithm lead to errors in selecting shape parts (edges, faces, solids) and ultimately to a wrong final GFA result.

-The description below illustrates some known GFA limitations. It does not enumerate exhaustively all problems that can arise in practice. Please address cases of Algorithm failure to the OCCT Maintenance Service.
+The description below illustrates some known GFA limitations. It does not enumerate exhaustively all problems that can arise in practice. Please, address cases of Algorithm failure to the OCCT Maintenance Service.


@subsection occt_algorithms_10_1	Arguments
@@ -2539,7 +2524,7 @@ Let us also consider a cylinder-based *Face 2* with radii *R=3000* and *H=6000*

@figure{/user_guides/boolean_operations/images/operations_image047.png,"P-Curves for Face 2",230}

-Pay attention to the Zoom value of the Figures.
+Please, pay attention to the Zoom value of the Figures.

 It is obvious that starting with some value of *ScF*, e.g. *ScF>1000000*, all sloped p-Curves on *Face 2*  will be almost vertical. At least, there will be no difference between the values of angles computed by standard C Run-Time Library functions, such as *double acos(double x)*. The loss of accuracy in computation of angles can cause failure of some BP sub-algorithms, such as building faces from a set of edges or building solids from a set of faces.

@@ -3102,7 +3087,7 @@ Some options of the main operation are passed into the Unifier:
 - Fuzzy tolerance of the operation is given to the Unifier as the linear tolerance.
 - Non destructive mode here controls the safe input mode in Unifier.

-For controlling this possibility in DRAW the command **bsimplify** has been implemented. See the @ref occt_draw_bop_options "Boolean Operations options" chapter in draw user guide.
+For controlling this possibility in DRAW the command **bsimplify** has been implemented. Please see the @ref occt_draw_bop_options "Boolean Operations options" chapter in draw user guide.


@subsection occt_algorithms_simplification_examples Examples
--- a/dox/user_guides/draw_test_harness/draw_test_harness.md
+++ b/dox/user_guides/draw_test_harness/draw_test_harness.md
@@ -1,4 +1,4 @@
-Draw Test Harness  {#occt_user_guides__test_harness}
+Draw Test Harness  {#occt_user_guides__test_harness}
 ===============================

@tableofcontents
@@ -5593,9 +5593,8 @@ Draw provides command to create curves and surfaces by approximation.

 * **2dapprox** fits a curve through 2d points; 
 * **appro** fits a curve through 3d points;
-* **surfapp** and **grilapp** fit a surface through 3d points by approximation;
-* **surfint** fit a surface through 3d points by interpolation;
-* **2dinterpole** interpolates a curve. 
+* **surfapp** and **grilapp** fit a surface through 3d points;
+* **2dinterpolate** interpolates a curve. 

@subsubsection occt_draw_6_8_1   appro, dapprox

@@ -5615,28 +5614,17 @@ Let us pick points and they will be fitted
 2dapprox c 10 
 ~~~~~

-@subsubsection occt_draw_6_8_2  surfapp, grilapp, surfint
+@subsubsection occt_draw_6_8_2  surfapp, grilapp


 Syntax: 
 ~~~~~
 surfapp name nbupoints nbvpoints x y z .... 
-or
-surfapp name nbupoints nbvpoints surf [periodic_flag = 0]
 grilapp name nbupoints nbvpoints xo dx yo dy z11 z12 ... 
-surfint name surf nbupoints nbvpoints [periodic_flag = 0]
 ~~~~~

 * **surfapp** fits a surface through an array of u and v points, nbupoints*nbvpoints. 
 * **grilapp** has the same function, but the x,y coordinates of the points are on a grid starting at x0,y0 with steps dx,dy. 
-* **surfapp** can take array of points from other input surface, if alternative syntax
-**surfapp** name nbupoints nbvpoints surf [periodic_flag = 0]
-is used.
-Both command use for fitting approximation algorithm.
-**surfint** uses interpolation algorithm and can take array of point only from other input surface.
-Optional parameter **periodic_flag** allows to get correct periodical surfaces in U direction.
-U direction of result surface corresponds colums of initial array of points.
-If **periodic_flag** = 1, algorithm uses first row of array as last row and builds periodical surface.

 **Example:** 
 ~~~~~
@@ -5872,8 +5860,6 @@ The following topics are covered in the eight sections of this chapter:
  * Topological operations, or booleans.
  * Drafting and blending.
  * Defeaturing.
-  * Making shapes periodic in 3D space.
-  * Making shapes connected.
  * Analysis of shapes.


@@ -6891,7 +6877,7 @@ tscale c1 0 0 0 0.5
@subsubsection occt_draw_7_6_1  fuse, cut, common

 These commands are no longer supported, so the result may be unpredictable.
-Use the commands bfuse, bcut, bcommon instead.
+Please use the commands bfuse, bcut, bcommon instead.

 Syntax:
 ~~~~~
@@ -6930,7 +6916,7 @@ ttranslate s4 0 -40 0
@subsubsection occt_draw_7_6_2  section, psection

 These commands are no longer supported, so the result may be unpredictable.
-Use the command **bsection** instead.
+Please use the command bsection instead.

 Syntax:      
 ~~~~~
@@ -6981,7 +6967,7 @@ The new algorithm of Boolean operations avoids a large number of weak points and
 It also provides wider range of options and diagnostics.
 The algorithms of Boolean component are fully described in the @ref occt_algorithms_1 "Boolean Operations" of boolean operation user guide.

-For the Draw commands to perform operations in Boolean component, read the dedicated section @ref occt_draw_bop "Boolean operations commands"
+For the Draw commands to perform operations in Boolean component please read the dedicated section @ref occt_draw_bop "Boolean operations commands"


@subsection occt_draw_7_8  Drafting and blending
@@ -7205,160 +7191,6 @@ parallel - enables the parallel processing mode.
 ~~~~


-@subsection occt_draw_makeperiodic 3D Model Periodicity
-
-Draw module for @ref occt_modalg_makeperiodic "making the shape periodic" includes the following commands:
-* **makeperiodic** - makes the shape periodic in required directions;
-* **repeatshape** - repeats the periodic shape in requested periodic direction;
-* **periodictwins** - returns the periodic twins for the shape;
-* **clearrepetitions** - clears all previous repetitions of the periodic shape.
-
-@subsubsection occt_draw_makeperiodic_makeperiodic makeperiodic
-
-The command makes the shape periodic in the required directions with the required period.
-If trimming is given it trims the shape to fit the requested period.
-
-Syntax:
-~~~~
-makeperiodic result shape [-x/y/z period [-trim first]]
-
-Where:
-result        - resulting periodic shape;
-shape         - input shape to make it periodic:
-x/y/z period - option to make the shape periodic in X, Y or Z direction with the given period;
-trim first   - option to trim the shape to fit the required period, starting the period in first.
-~~~~
-
-@subsubsection occt_draw_makeperiodic_repeatshape repeatshape
-
-The command repeats the periodic shape in periodic direction requested number of time.
-The result contains the all the repeated shapes glued together.
-The command should be called after **makeperiodic** command.
-
-Syntax:
-~~~~
-repeatshape result -x/y/z times
-
-Where:
-result       - resulting shape;
-x/y/z times - direction for repetition and number of repetitions (negative number of times means the repetition in negative direction).
-~~~~
-
-@subsubsection occt_draw_makeperiodic_periodictwins periodictwins
-
-For the given shape the command returns the identical shapes located on the opposite sides of the periodic direction.
-All periodic twins should have the same geometry.
-The command should be called after **makeperiodic** command.
-
-Syntax:
-~~~~
-periodictwins twins shape
-
-Where:
-twins - periodic twins for the given shape
-shape - shape to find the twins for
-~~~~
-
-@subsubsection occt_draw_makeperiodic_clearrepetitions clearrepetitions
-
-The command clears all previous repetitions of the periodic shape allowing to start the repetitions over.
-No arguments are needed for the command.
-
-
-@subsection occt_draw_makeconnected Making the touching shapes connected
-
-Draw module for @ref occt_modalg_makeconnected "making the touching same-dimensional shapes connected" includes the following commands:
-* **makeconnected** - make the input shapes connected or glued, performs material associations;
-* **cmaterialson** - returns the materials located on the requested side of a shape;
-* **cmakeperiodic** - makes the connected shape periodic in requested directions;
-* **crepeatshape** - repeats the periodic connected shape in requested directions requested number of times;
-* **cperiodictwins** - returns all periodic twins for the shape;
-* **cclearrepetitions** - clears all previous repetitions of the periodic shape, keeping the shape periodic.
-
-@subsubsection occt_draw_makeconnected_makeconnected makeconnected
-
-The command makes the input touching shapes connected.
-
-Syntax:
-~~~~
-makeconnected result shape1 shape2 ...
-
-Where:
-result            - resulting connected shape.
-shape1 shape2 ... - shapes to be made connected.
-~~~~
-
-@subsubsection occt_draw_makeconnected_cmaterialson cmaterialson
-
-The command returns the materials located on the requested side of the shape.
-The command should be called after the shapes have been made connected, i.e. after the command **makeconnected**.
-
-Syntax:
-~~~~
-cmaterialson result +/- shape
-
-Where:
-result - material shapes
-shape  - shape for which the materials are needed
-+/-    - side of a given shape ('+' for positive side, '-' - for negative).
-~~~~
-
-@subsubsection occt_draw_makeconnected_cmakeperiodic cmakeperiodic
-
-The command makes the connected shape periodic in the required directions with the required period.
-The command should be called after the shapes have been made connected, i.e. after the command **makeconnected**.
-
-Syntax:
-~~~~
-cmakeperiodic result [-x/y/z period [-trim first]]
- 
-Where:
-result        - resulting periodic shape;
-shape         - input shape to make it periodic:
-x/y/z period - option to make the shape periodic in X, Y or Z direction with the given period;
-trim first   - option to trim the shape to fit the required period, starting the period in first.
-~~~~
-
-@subsubsection occt_draw_makeconnected_crepeatshape crepeatshape
-
-The command repeats the connected periodic shape in the required periodic directions required number of times.
-The command should be called after the shapes have been made connected and periodic, i.e. after the commands **makeconnected** and **cmakeperiodic**.
-
-Syntax:
-~~~~
-crepeatshape result -x/y/z times
-
-Where:
-result       - resulting shape;
-x/y/z times - direction for repetition and number of repetitions (negative number of times means the repetition in negative direction).
-~~~~
-
-@subsubsection occt_draw_makeconnected_cperiodictwins cperiodictwins
-
-The command returns all periodic twins for the shape.
-The command should be called after the shapes have been made connected and periodic, i.e. after the commands **makeconnected** and **cmakeperiodic**.
-
-Syntax:
-~~~~
-cperiodictwins twins shape
-
-Where:
-twins - periodic twins of a shape.
-shape - input shape.
-~~~~
-
-@subsubsection occt_draw_makeconnected_cclearrepetitions cclearrepetitions
-
-The command clears all previous repetitions of the periodic shape keeping the shape periodic.
-The command should be called after the shapes have been made connected, periodic and the repetitions have been applied to the periodic shape, i.e. after the commands **makeconnected**, **cmakeperiodic** and **crepeatshape**.
-Otherwise the command will have no effect.
-
-Syntax:
-~~~~
-cclearrepetitions [result]
-~~~~
-
-
@subsection occt_draw_7_9  Analysis of topology and geometry

 Analysis of shapes includes commands to compute length, area, volumes and inertial properties, as well as to compute some aspects impacting shape validity.
@@ -7377,26 +7209,15 @@ Analysis of shapes includes commands to compute length, area, volumes and inerti

 Syntax:      
 ~~~~~
-lprops shape  [x y z] [-skip] [-full] [-tri]
-sprops shape [epsilon] [c[losed]] [x y z] [-skip] [-full] [-tri]
-vprops shape [epsilon] [c[losed]] [x y z] [-skip] [-full] [-tri] 
+lprops shape 
+sprops shape 
+vprops shape 
 ~~~~~

 * **lprops** computes the mass properties of all edges in the shape with a linear density of 1;
 * **sprops** of all faces with a surface density of 1;
 * **vprops** of all solids with a density of 1. 

-For computation of properties of the shape, exact geomery (curves, surfaces) or
-some discrete data (polygons, triangulations) can be used for calculations.
-The epsilon, if given, defines relative precision of computation.
-The **closed** flag, if present, forces computation only closed shells of the shape.
-The centroid coordinates will be put to DRAW variables x y z (if given).
-Shared entities will be taken in account only one time in the **skip** mode.
-All values are output with the full precision in the **full** mode.
-Preferable source of geometry data are triangulations in case if it exists, 
-if the **-tri** key is used, otherwise preferable data is exact geometry.
-If epsilon is given, exact geometry (curves, surfaces) are used for calculations independently of using key **-tri**.
-
 All three commands print the mass, the coordinates of the center of gravity, the matrix of inertia and the moments. Mass is either the length, the area or the volume. The center and the main axis of inertia are displayed. 

 **Example:** 
@@ -8538,65 +8359,9 @@ bfillds
 bsplit result
 ~~~~

-@subsubsection occt_draw_bop_build_BOP_opensolids Alternative command for BOP
-
-There is an alternative way to build the result of Boolean operation using the **buildbop** command, which should be run after any other building command, such as **bbuild** or **bbop** or **bsplit**.
-The command has the following features:
-* It is designed to work on open solids and thus uses the alternative approach for building the results (see @ref occt_algorithms_bop_on_opensolids "BOP on open solids" chapter of Boolean operations user guide).
-* It allows changing the groups of Objects and Tools of the operation (even excluding some of the arguments is possible).
-* History information for solids will be lost.
-
-Syntax:
-~~~~
-buildbop result -o s1 [s2 ...] -t s3 [s4 ...] -op operation (common/fuse/cut/tuc)
-Where:
-result      - result shape of the operation
-s1 s2 s3 s4 - arguments (solids) of the GF operation
-operation   - type of boolean operation
-~~~~
-
-**Example**
-~~~~
-box b1 10 10 10
-box b2 5 5 5 10 10 10
-box b3 -5 -5 -5 10 10 10
-
-bclearobjects
-bcleartools
-baddobjects b1 b2 b3
-bfillds
-bbuild r
-
-# bbop command will not be available as the tools are not set
-# but buildbop is available
-
-# fuse of two
-buildbop r1 -o b1 -t b2 -op fuse
-buildbop r2 -o b2 -t b3 -op fuse
-
-# fuse of all - it does not matter how the groups are formed
-buildbop r3 -o b1 b2 -t b3 -op fuse
-buildbop r4 -o b2 -t b1 b3 -op fuse
-buildbop r5 -o b1 b2 b3 -op fuse
-buildbop r6 -t b1 b2 b3 -op fuse
-
-# common of two
-buildbop r7 -o b2 -t b1 -op common
-buildbop r8 -o b1 -t b3 -op common
-
-# common
-buildbop r9 -o b1 -t b2 b3 -op common
-
-# cut
-buildbop r10 -o b1 -t b2 b3 -op cut
-
-# opposite cut
-buildbop r11 -o b1 -t b2 b3 -op tuc
-~~~~
-
@subsubsection occt_draw_bop_build_CB Cells Builder

-See the @ref occt_algorithms_10c_Cells_1 "Cells Builder Usage" for the Draw usage of Cells Builder algorithm.
+Please see the @ref occt_algorithms_10c_Cells_1 "Cells Builder Usage" for the Draw usage of Cells Builder algorithm.


@subsubsection occt_draw_bop_build_API Building result through API
@@ -8719,7 +8484,7 @@ Where:

@subsubsection occt_draw_bop_options_warn Drawing warning shapes

-**bdrawwarnshapes** command enables/disables drawing of warning shapes of BOP algorithms.
+**bdrawwarnshapes** command enables/disables drawing of waring shapes of BOP algorithms.

 Syntax:
 ~~~~
--- a/dox/user_guides/foundation_classes/foundation_classes.md
+++ b/dox/user_guides/foundation_classes/foundation_classes.md
--- a/dox/user_guides/iges/iges.md
+++ b/dox/user_guides/iges/iges.md
@@ -9,13 +9,13 @@ The IGES interface reads IGES files and translates them to Open CASCADE Technolo

 Other kinds of data such as colors and names can be read or written with the help of XDE tools <i> IGESCAFControl_Reader</i> and <i> IGESCAFControl_Writer</i>. 

-**Note** :
+Please, note:

  * an IGES model is an IGES file that has been loaded into memory.
  * an IGES entity is an entity in the IGES normal sense.
  * a root entity is the highest level entity of any given type, e.g. type 144 for surfaces and type 186 for solids. Roots are not referenced by other entities.

-This manual mainly explains how  to convert an IGES file to an Open CASCADE Technology (**OCCT**) shape and  vice versa. It provides basic documentation on conversion. For advanced  information on conversion, see our <a href="https://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.
+This manual mainly explains how  to convert an IGES file to an Open CASCADE Technology (**OCCT**) shape and  vice versa. It provides basic documentation on conversion. For advanced  information on conversion, see our <a href="http://www.opencascade.com/content/tutorial-learning">E-learning & Training</a> offerings.

 IGES files produced in accordance with IGES standard versions up to and including version 5.3 can be read. IGES files that are produced by this  interface conform to IGES version 5.3 (Initial Graphics Exchange Specification,  IGES 5.3. ANS US PRO/IPO-100-1996). 

@@ -178,10 +178,10 @@ if  (!Interface_Static::SetRVal ("read.maxprecision.val",0.1))
 Default value is 1.  

 <h4>read.stdsameparameter.mode</h4>
-defines the using of  *BRepLib\::SameParameter*. Its possible values are:  
-* 0 (Off) -- *BRepLib\::SameParameter* is not called,  
-* 1 (On) -- *BRepLib\::SameParameter* is called.  
-*BRepLib\::SameParameter* is used through  *ShapeFix_Edge\::SameParameter*. It ensures that the resulting edge will have the  lowest tolerance taking pcurves either unmodified from the IGES file or  modified by *BRepLib\::SameParameter*.  
+defines the using of  *BRepLib::SameParameter*. Its possible values are:  
+* 0 (Off) -- *BRepLib::SameParameter* is not called,  
+* 1 (On) -- *BRepLib::SameParameter* is called.  
+*BRepLib::SameParameter* is used through  *ShapeFix_Edge::SameParameter*. It ensures that the resulting edge will have the  lowest tolerance taking pcurves either unmodified from the IGES file or  modified by *BRepLib::SameParameter*.  
 Read this parameter  with:  
 ~~~~~
 Standard_Integer mv =  Interface_Static::IVal("read.stdsameparameter.mode"); 
@@ -202,7 +202,7 @@ The processor also  decides to re-compute either the 3D or the 2D curve even if
  * the number of sub-curves in  the 2D curve is different from the number of sub-curves in the 3D curve. This  can be either due to different numbers of sub-curves given in the IGES file or  because of splitting of curves during translation. 
  * 3D or 2D curve is a Circular  Arc (entity type 100) starting and ending in the same point (note that this  case is incorrect according to the IGES standard).
  
-The parameter  *read.surfacecurve.mode* defines which curve (3D or 2D) is used for re-computing  the other one:
+The parameter  *read.surfacecurve.mode* defines which curve (3D or 2D) is used for re-computing  the other one:  
 * *Default(0)* use  the preference flag value in the entity's Parameter Data section. The flag  values are:  
  * 0: no preference given, 
  * 1: use 2D for 142 entities  and 3D for 141 entities, 
@@ -251,7 +251,7 @@ Default value is 0.01.
 <h4>read.iges.bspline.approxd1.mode</h4>
 This parameter is obsolete (it is rarely used in real  practice). If set to True, it affects the translation of bspline curves of  degree 1 from IGES: these curves (which geometrically are polylines) are split  by duplicated points, and the translator attempts to convert each of the  obtained parts to a bspline of a higher continuity.  

-Read this parameter with:  
+Read this parameter  with:  
 ~~~~~
 Standard_Real bam =   Interface_Static::CVal("read.iges.bspline.approxd1.mode"); 
 ~~~~~
@@ -266,9 +266,9 @@ Default value is Off.
 <h4>read.iges.resource.name and read.iges.sequence</h4>
 These two parameters define the name of the resource file  and the name of the sequence of operators   (defined in that file) for Shape Processing, which is automatically performed  by the IGES   translator. The Shape Processing is a user-configurable step, which is  performed after   the translation and consists in application of a set of operators to a  resulting shape. This is   a very powerful tool allowing to customize the shape and to adapt it to the  needs of   a receiving application. By default, the sequence consists of a single operator  *ShapeFix* that calls Shape Healing from the IGES translator.  

-Find an example of the resource file for IGES (which  defines parameters corresponding to the sequence applied by default, i.e. if the resource file is  not found) in the Open CASCADE Technology sources by the path <i>%CASROOT%/src/XSTEPResource/IGES</i>. 
+Please find an example of the resource file for IGES (which  defines parameters   corresponding to the sequence applied by default, i.e. if the resource file is  not found) in   the Open CASCADE Technology installation, by the path   <i>%CASROOT%/src/XSTEPResource/IGES</i> . 

-IGES translator will use that file if you define the environment variable *CSF_IGESDefaults*, which should point to the directory where the resource file  resides.   Note that if you change parameter *read.iges.resource.name*, you should change  the name of the resource file and the name of the environment variable correspondingly.  The variable should contain a path to the resource file. 
+In order for the IGES translator to use that file, you have  to define the environment variable   *CSF_IGESDefaults*, which should point to the directory where the resource file  resides.   Note that if you change parameter *read.iges.resource.name*, you should change  the name   of the resource file and the name of the environment variable correspondingly.  The variable should contain a path to the resource file. 

 Default values:  
 * read.iges.resource.name -- IGES,  
@@ -286,7 +286,7 @@ A list of entities can  be formed by invoking the method *IGESControl_Reader::Gi
 Handle(TColStd_HSequenceOfTransient)  list = reader.GiveList(); 
 ~~~~~
 Several predefined  operators can be used to select a list of entities of a specific type. 
-To make a selection, use the method *IGESControl_Reader::GiveList* with the selection type in  quotation marks as an argument. You can also make cumulative selections. For  example, you would use the following syntax: 
+To make a selection, you  use the method *IGESControl_Reader::GiveList* with the selection type in  quotation marks as an argument. You can also make cumulative selections. For  example, you would use the following syntax: 
 1. Requesting the faces in the  file: 
 ~~~~~
 faces =  Reader.GiveList("iges-faces"); 
@@ -400,12 +400,12 @@ reader.PrintTransferInfo  (failsonly, mode);
 ~~~~~
 displays the messages  that appeared during the last invocation of *Transfer* or *TransferRoots*.  

-If *failsonly* is  *IFSelect_FailOnly*, only fail messages will be output, if it is  *IFSelect_FailAndWarn*, all messages will be output. Parameter “mode” can have  *IFSelect_xxx* values where *xxx* can be:
-  * *GeneralCount* -- gives general statistics  on the transfer (number of translated IGES entities, number of fails and  warnings, etc)  
-  * *CountByItem* -- gives the number of IGES  entities with their types per message. 
-  * *ListByItem* -- gives the number of IGES  entities with their type and DE numbers per message.  
-  * *ResultCount*  -- gives the number of  resulting OCCT shapes per type.  
-  * *Mapping* -- gives mapping between  roots of the IGES file and the resulting OCCT shape per IGES and OCCT type.
+If *failsonly* is  *IFSelect_FailOnly*, only fail messages will be output, if it is  *IFSelect_FailAndWarn*, all messages will be output. Parameter “mode” can have  *IFSelect_xxx* values where *xxx* can be:  
+* *GeneralCount* -- gives general statistics  on the transfer (number of translated IGES entities, number of fails and  warnings, etc)  
+* *CountByItem* -- gives the number of IGES  entities with their types per message. 
+* *ListByItem* -- gives the number of IGES  entities with their type and DE numbers per message.  
+* *ResultCount*  -- gives the number of  resulting OCCT shapes per type.  
+* *Mapping* -- gives mapping between  roots of the IGES file and the resulting OCCT shape per IGES and OCCT type.
 
@subsection occt_iges_2_4 Mapping of IGES  entities to Open CASCADE Technology shapes

@@ -577,7 +577,7 @@ All  methods are in charge of transferring curves  from IGES curve entities <i>(
  * *IGESToBRep_TopoCurve::TransferPoint* -- vertex is constructed from a Point entity with tolerance *EpsGeom*UnitFactor*. 
  * *IGESToBRep_TopoCurve::Transfer2dPoint* -- vertex is constructed from a Point entity with tolerance *EpsCoeff*. 
  * *IGESToBRep_TopoCurve::TransferCompositeCurveGeneral* -- obtains shapes (edges or wires) from other methods and adds  them into the resulting wire. Two adjacent edges of the wire can be connected  with tolerance up to *MaxTol*. 
-  * *IGESToBRep_TopoCurve::TransferCurveOnFace* and  *IGESToBRep_TopoCurve::TransferBoundaryOnFace* build a wire from 3D and 2D representations of  a curve on surface. Edges and vertices of the wire cannot have tolerance larger than *MaxTol*. The value *EpsGeom*UnitFactor* is passed into *ShapeFix_Wire::SetPrecision* and *MaxTol* is passed into *ShapeFix_Wire::MaxTolerance*. To find out how these parameters affect the resulting tolerance changes, refer to class *ShapeFix_Wire*. 
+  * *IGESToBRep_TopoCurve::TransferCurveOnFace* and  *IGESToBRep_TopoCurve::TransferBoundaryOnFace* build a wire from 3D and 2D representations of  a curve on surface. Edges and vertices of the wire cannot have tolerance larger than *MaxTol*. The value *EpsGeom*UnitFactor* is passed into *ShapeFix_Wire::SetPrecision* and *MaxTol* is passed into *ShapeFix_Wire::MaxTolerance*. To find out how these parameters affect the resulting tolerance changes, please,  refer to class *ShapeFix_Wire*. 
  * *IGESToBRep_TopoCurve::TransferTopoBasicCurve* and  *IGESToBRep_TopoCurve::Transfer2dTopoBasicCurve* -- the boundary vertices of an edge (or a wire if a curve was  of C0 continuity) translated from a basis IGES curve (*BSplineCurve,  CopiousData, Line,* etc.) are built with tolerance *EpsGeom*UnitFactor*, the edge tolerance is *Precision::Confusion*. If a curve was divided into several edges, the common  vertices of such adjacent edges have tolerance *Precision::Confusion*.
  
  
@@ -710,7 +710,7 @@ if  (!Interface_Static::SetRVal(;write.precision.val;,0.01))
 ~~~~~
 Default value is 0.0001. 

-<h4>write.iges.resource.name</h4> and <h4>write.iges.sequence</h4> are the same as the corresponding read.iges.\* parameters. Note that the  default sequence for writing contains *DirectFaces* operator, which converts elementary surfaces based on left-hand axes (valid in CASCADE) to right-hand axes (which are valid only in IGES). 
+<h4>write.iges.resource.name</h4> and <h4>write.iges.sequence</h4> are the same as the corresponding read.iges.\* parameters, please, see above. Note that the  default sequence for writing   contains *DirectFaces* operator, which converts elementary surfaces based on left-hand axes (valid in CASCADE) to right-hand axes (which are valid only in IGES). 

 Default values : 
 ~~~~~
--- a/dox/user_guides/inspector/inspector.md
+++ b/dox/user_guides/inspector/inspector.md
@@ -30,10 +30,10 @@ Each of the listed plugins is embedded in the common framework, thus it is possi
 There are two launch modes:
 1. Launch **TInspectorEXE** executable sample. For more details see @ref occt_inspector_4_1 "TInspectorEXE" section;
 2. Launch DRAW, load plugin INSPECTOR, and use *tinspector* command.
-   For more details, see @ref occt_inspector_4_2 "Launch in DRAW Test Harness" section.
+   For more details see @ref occt_inspector_4_2 "Launch in DRAW Test Harness" section.


-**Note**. If you have no Inspector library in your build directory, make sure that OCCT is compiled with *BUILD_Inspector* 
+Note. If you have no Inspector library in your build directory, please, make sure that OCCT is compiled with *BUILD_Inspector* 
 option ON. For more details see @ref occt_inspector_5 "Build procedure".


@@ -290,7 +290,7 @@ Selection controls switch on/off the possibility to set selection in the context
 | Select Presentations | *AIS_InteractiveObject* | Calls *AddOrRemoveSelected* of interactive object for the selected item. |
 | Select Owners | *SelectMgr_EntityOwner* or <br> *SelectMgr_SensitiveEntity* | Calls *AddOrRemoveSelected* of *SelectMgr_EntityOwner* for the selected item. |

-Note that the initial selection in the context will be cleared.
+Please, note that the initial selection in the context will be cleared.
 If the button is toggled, the button selection is active. Only one button may be toggled at the moment.


--- a/dox/user_guides/modeling_algos/images/modeling_algos_image057.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_image057.png
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+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mesh_001.svg
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+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mesh_002.svg
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-<text xml:space="preserve" x="480" y="262" clip-path="url(#clipPath49)" stroke="none">GetModel()</text>
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-<text xml:space="preserve" x="480" y="278" clip-path="url(#clipPath51)" stroke="none">DiscretizeEdges()</text>
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-<text xml:space="preserve" x="480" y="294" clip-path="url(#clipPath53)" stroke="none">HealModel()</text>
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-<text xml:space="preserve" x="480" y="310" clip-path="url(#clipPath55)" stroke="none">PreProcessModel()</text>
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-<text xml:space="preserve" x="480" y="326" clip-path="url(#clipPath57)" stroke="none">DiscretizeFaces()</text>
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-<text xml:space="preserve" x="480" y="342" clip-path="url(#clipPath59)" stroke="none">PostProcessModel()</text>
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-<text xml:space="preserve" x="480" y="358" clip-path="url(#clipPath61)" stroke="none">SetModelBuilder()</text>
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-<text xml:space="preserve" x="480" y="374" clip-path="url(#clipPath63)" stroke="none">GetModelBuilder()</text>
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-<text xml:space="preserve" x="480" y="390" clip-path="url(#clipPath65)" stroke="none">SetEdgeDiscret()</text>
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-<text xml:space="preserve" x="480" y="406" clip-path="url(#clipPath67)" stroke="none">GetEdgeDiscret()</text>
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-<text xml:space="preserve" x="480" y="422" clip-path="url(#clipPath69)" stroke="none">SetModelHealer()</text>
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-<text xml:space="preserve" x="480" y="438" clip-path="url(#clipPath71)" stroke="none">GetModelHealer()</text>
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-<text xml:space="preserve" x="480" y="454" clip-path="url(#clipPath73)" stroke="none">SetPreProcessor()</text>
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-<text xml:space="preserve" x="480" y="470" clip-path="url(#clipPath75)" stroke="none">GetPreProcessor()</text>
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-<text xml:space="preserve" x="480" y="486" clip-path="url(#clipPath77)" stroke="none">SetFaceDiscret()</text>
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-<text xml:space="preserve" x="480" y="502" clip-path="url(#clipPath79)" stroke="none">GetFaceDiscret()</text>
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-<text xml:space="preserve" x="480" y="518" clip-path="url(#clipPath81)" stroke="none">SetPostProcessor()</text>
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--- a/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im001.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im001.png
--- a/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im002.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im002.png
--- a/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im003.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im003.png
--- a/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im004.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im004.png
--- a/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im005.png
+++ b/dox/user_guides/modeling_algos/images/modeling_algos_mkperiodic_im005.png
--- a/Show More
+++ b/Show More
				`@@ -1 +0,0 @@`
				`#include \"../src/$${OCCT_PACKAGE}/$${OCCT_HEADER}\"`