0032811: Bad result of sweep operation due to Surface Surface Intersect Bug

adm/UDLIST

@@ -454,7 +454,6 @@ t TKRWMesh
 n RWGltf
 n RWMesh
 n RWObj
-n RWPly
 n DFBrowser
 n DFBrowserPane
 n DFBrowserPaneXDE

dox/build/build_3rdparty/building_3rdparty.md

@@ -2,48 +2,60 @@
 ==============================================
 @tableofcontents
 
-On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from https://dev.opencascade.org/resources/download/3rd-party-components.
-On Linux and macOS, it is recommended to use the version installed in the system natively.
+On Windows, the easiest way to install third-party libraries is to download archive with pre-built binaries from https://opencascade.com/content/3rd-party-components.
+On Linux and OS X, it is recommended to use the version installed in the system natively.
 
 @section dev_guides__building_3rdparty_win_1 Windows
 
-This section presents guidelines for building third-party products used by Open CASCADE Technology (OCCT) and samples on Windows platform.
-It is assumed that you are already familiar with MS Visual Studio / Visual C++.
+This document presents guidelines for building third-party products used by Open CASCADE Technology (OCCT) and samples on Windows platform. It is assumed that you are already familiar with MS Visual Studio / Visual C++. 
 
-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 runtime binaries.
+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. 
 
-It is recommended to create a separate new folder on your workstation, where you will unpack the downloaded archives of the third-party products, and where you will build these products (for example, `c:/occ3rdparty`).
-Further in this document, this folder is referred to as `3rdparty`.
+The links for downloading the third-party products are available at https://opencascade.com/content/3rd-party-components.
+
+There are two types of third-party products used  by OCCT: 
+
+* Mandatory  products: 
+	* Tcl/Tk 8.5 -- 8.6;
+	* FreeType 2.4.10 -- 2.5.3.
+* Optional  products:
+	* TBB 3.x -- 4.x;
+	* FreeImage 3.14.1 -- 3.16.0;
+	* VTK 6.1.0.
+
+It is recommended to create a separate new folder on your workstation, where you will unpack the downloaded archives of the third-party  products, and where you will build these products (for example, *c:\\occ3rdparty*). 
+
+Further in this document, this folder is referred to as *3rdparty*. 
 
 @subsection dev_guides__building_3rdparty_win_2 Tcl/Tk
 
 Tcl/Tk is required for DRAW test harness.
 
 **Installation from sources: Tcl**
-
+  
 Download the necessary archive from https://www.tcl.tk/software/tcltk/download.html and unpack it.
   
-1. In the `win` sub-directory, edit file `buildall.vc.bat`:
+1. In the *win* sub-directory, edit file *buildall.vc.bat*:
 
-   * Edit the line `"call ... vcvars32.bat"` to have correct path to the version of Visual Studio to be used for building, for instance:
+   * Edit the line "call ... vcvars32.bat" to have correct path to the version of Visual Studio to be used for building, for instance:
 
          call "%VS80COMNTOOLS%\vsvars32.bat"
 
      If you are building 64-bit version, set environment accordingly, e.g.:
 
          call "%VS80COMNTOOLS%\..\..\VC\vcvarsall.bat" amd64
-
-   * Define variable `INSTALLDIR` pointing to directory where Tcl/Tk will be installed, e.g.:
+     
+   * Define variable *INSTALLDIR* pointing to directory where Tcl/Tk will be installed, e.g.:
 
          set INSTALLDIR=D:\OCCT\3rdparty\tcltk-86-32
 
-   * Add option `install` to the first command line calling `nmake`:
+   * Add option *install* to the first command line calling *nmake*:
 
          nmake -nologo -f makefile.vc release htmlhelp install %1
 
-   * Remove second call to `nmake` (building statically linked executable)
+   * Remove second call to *nmake* (building statically linked executable)
 
-2. Edit file `rules.vc` replacing line
+2. Edit file *rules.vc* replacing line 
 
        SUFX	    = tsgx
 
@@ -53,18 +65,21 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h
 
    This is to avoid extra prefix 't' in the library name, which is not recognized by default by OCCT build tools.
 
+
 3. By default, Tcl uses dynamic version of run-time library (MSVCRT), which must be installed on the system where Tcl will be used.
    You may wish to link Tcl library with static version of run-time to avoid this dependency.
    For that:
 
-   * Edit file `makefile.vc` replacing strings `"crt = -MD"` by `"crt = -MT"`
+   * Edit file *makefile.vc* replacing strings "crt = -MD" by "crt = -MT"
 
-   * Edit source file `tclMain.c` (located in folder `generic`) commenting out forward declaration of function `isatty()`.
+   * Edit source file *tclMain.c* (located in folder *generic*) commenting out forward declaration of function *isatty()*.
 
-4. In the command prompt, run `buildall.vc.bat`<br>
-   You might need to run this script twice to have `tclsh` executable installed; check subfolder `bin` of specified installation path to verify this.
 
-5. For convenience of use, we recommend making a copy of `tclsh` executable created in subfolder `bin` of `INSTALLDIR` and named with Tcl version number suffix, as `tclsh.exe` (with no suffix)
+4. In the command prompt, run *buildall.vc.bat*
+
+   You might need to run this script twice to have *tclsh* executable installed; check subfolder *bin* of specified installation path to verify this.
+
+5. For convenience of use, we recommend making a copy of *tclsh* executable created in subfolder *bin* of *INSTALLDIR* and named with Tcl version number suffix, as *tclsh.exe* (with no suffix)
 
        > cd D:\OCCT\3rdparty\tcltk-86-32\bin
        > cp tclsh86.exe tclsh.exe
@@ -72,153 +87,190 @@ Download the necessary archive from https://www.tcl.tk/software/tcltk/download.h
 **Installation from sources: Tk**
   
 Download the necessary archive from https://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`.
 
-You might need to edit default value of `TCLDIR` variable defined in `buildall.vc.bat` (should be not necessary if you unpack both Tcl and Tk sources in the same folder).
+Apply the same steps as described for building Tcl above, with the same INSTALLDIR.
+Note that Tk produces its own executable, called *wish*. 
+
+You might need to edit default value of *TCLDIR* variable defined in *buildall.vc.bat* (should be not necessary if you unpack both Tcl and Tk sources in the same folder).
 
 @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://freetype.org/
+FreeType is required for text display in a 3D viewer. You can download its sources from https://sourceforge.net/projects/freetype/files/
 
-1. Unpack the downloaded archive of FreeType product into the `3rdparty` folder.
-   As a result, you will get a folder named, for example, `3rdparty/freetype-2.4.10`.
-   Further in this document, this folder is referred to as `freetype`.
+### The building procedure
 
-2. Open the solution file `freetype/builds/win32/vc20xx/freetype.sln` in Visual Studio.
-   Here `vc20xx` stands for your version of Visual Studio.
+1. Unpack the downloaded archive of FreeType product into the *3rdparty*  folder. As a result, you will get a folder named, for example, *3rdparty\\freetype-2.4.10*.  Further in this document, this folder is referred to as *freetype*. 
+   
+2. Open the solution file *freetype\\builds\\win32\\vc20xx\\freetype.sln*  in Visual Studio. Here *vc20xx* stands for your version of Visual Studio. 
 
-3. Select the configuration to build: either `Debug` or `Release`.
+3. Select the configuration to build: either Debug or Release. 
 
-4. Build the `freetype` project.<br>
-   As a result, you will get a `freetype` import library (`.lib`) in the `freetype/obj/win32/vc20xx` folder.
+4. Build  the *freetype* project. 
 
-5. If you build FreeType for a 64 bit platform, select in the main menu `Build - Configuration Manager`
-   and add `x64` platform to the solution configuration by copying the settings from `Win32` platform:
+   As a result, you will get a  freetype import library (.lib) in the *freetype\\obj\\win32\\vc20xx*  folder.  
+
+
+5. If you build FreeType for a 64 bit platform, select in the main menu **Build - Configuration Manager**  and add *x64* platform to the solution configuration by copying the settings from Win32 platform: 
 
    @figure{/build/build_3rdparty/images/3rdparty_image001.png}
 
-   Update the value of the Output File for `x64` configuration:
+   Update the value of the Output File for  x64 configuration: 
 
    @figure{/build/build_3rdparty/images/3rdparty_image003.png}
 
-   Build the `freetype` project.<br>
-   As a result, you will obtain a 64 bit import library (`.lib`) file in the `freetype/x64/vc20xx` folder.
-   To build FreeType as a dynamic library (`.dll`) follow steps 6, 7 and 8 of this procedure.
+   Build the *freetype* project. 
 
-6. Open menu Project-> Properties-> Configuration  Properties-> General and change option `Configuration Type` to `Dynamic Library (.dll)`.
-7. Edit file `freetype/include/freetype/config/ftoption.h`:<br>
-   in line 255, uncomment the definition of macro `FT_EXPORT` and change it as follows:
+   As a result, you will obtain a 64 bit import library (.lib) file in the *freetype\\x64\\vc20xx*  folder. 
 
-       #define FT_EXPORT(x)   __declspec(dllexport) x
+   To build FreeType as a dynamic library (.dll) follow steps 6, 7 and 8 of this procedure. 
 
-8. Build the `freetype` project.<br>
-   As a result, you will obtain the files of the import library (`.lib`) and the dynamic library (`.dll`) in folders `freetype/objs/release` or `freetype/objs/debug`.
-   If you build for a 64 bit platform, follow step 5 of the procedure.
+6. Open menu Project-> Properties-> Configuration  Properties-> General and change option **Configuration Type** to *Dynamic  Library (.dll)*. 
+7. Edit file *freetype\\include\\freetype\\config\\ftoption.h*:  
+  
+   in line 255, uncomment the definition of macro *FT_EXPORT* and change it as follows: 
 
-   To facilitate the use of FreeType libraries in OCCT with minimal adjustment of build procedures,
-   it is recommended to copy the include files and libraries of FreeType into a separate folder, named according to the pattern `freetype-compiler-bitness-building mode`, where:
-   * `compiler` is `vc8` or `vc9` or `vc10` or `vc11`;
-   * `bitness`  is `32` or `64`;
-   * `building mode` is `opt` (for `Release`) or `deb` (for `Debug`).
+       #define FT_EXPORT(x)   __declspec(dllexport) x 
+
+8. Build  the *freetype* project. 
+
+   As a result, you will obtain the files of the import  library (.lib) and the dynamic library (.dll)   in folders <i>freetype  \\objs\\release</i> or <i>\\objs\\debug </i>. 
+   
+   If you build for a 64 bit platform, follow step 5 of the procedure. 
+
+   To facilitate the use of FreeType libraries in OCCT with minimal adjustment of build procedures, it is recommended to copy the include files and libraries of FreeType into a separate folder, named according to the pattern: *freetype-compiler-bitness-building mode*, where: 
+   * **compiler** is *vc8* or *vc9* or *vc10* or *vc11*; 
+   * **bitness**  is *32* or *64*;
+   * **building mode** is *opt* (for Release) or *deb* (for Debug). 
+    
+   The *include* subfolder should be copied as is, while libraries should be renamed to *freetype.lib* and *freetype.dll* (suffixes removed) and placed to subdirectories *lib *and  *bin*, respectively. If the Debug configuration is built, the Debug libraries should be put into subdirectories *libd* and *bind*. 
 
-   The `include` subfolder should be copied as is, while libraries should be renamed to `freetype.lib` and `freetype.dll` (suffixes removed) and placed to subdirectories `lib` and `bin`, respectively.
-   If the `Debug` configuration is built, the Debug libraries should be put into subdirectories `libd` and `bind`.
 
 @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.
-Go to the **Download** page, find the release version you need (e.g. `tbb30_018oss`) and pick the archive for Windows platform.
+This third-party product is installed with binaries 
+from the archive that can be downloaded from https://github.com/intel/tbb.
+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.
+Unpack the downloaded  archive of TBB product into the *3rdparty* folder. 
 
-Further in this document, this folder is referred to as `tbb`.
+Further in this document,  this folder is referred to as *tbb*. 
 
 @subsection dev_guides__building_3rdparty_win_3_3 FreeImage
 
-This third-party product should be built as a dynamically loadable library (`.dll` file).
-You can download its sources from
+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/
 
-1. Unpack the downloaded archive of FreeImage product into `3rdparty` folder.<br>
-   As a result, you should have a folder named `3rdparty/FreeImage`.
-   Rename it according to the rule: `freeimage-platform-compiler-building mode`, where
+### The building procedure: 
 
-   * `platform`  is `win32` or `win64`;
-   * `compiler`  is `vc8` or `vc9` or `vc10` or `vc11`;
-   * `building mode` is *opt* (for release) or `deb` (for debug)
+1. Unpack the  downloaded archive of FreeImage product into *3rdparty* folder. 
+  
+   As a result, you should have a folder named *3rdparty\\FreeImage*. 
+  
+   Rename it according to the rule: *freeimage-platform-compiler-building  mode*, where 
+   
+   * **platform**  is *win32* or *win64*; 
+   * **compiler**  is *vc8* or *vc9* or *vc10* or *vc11*; 
+   * **building  mode** is *opt* (for release) or *deb* (for debug) 
 
-   Further in this document, this folder is referred to as `freeimage`.
+   Further in this  document, this folder is referred to as *freeimage*. 
 
-2. Open the solution file `freeimage/FreeImage.*.sln` in your Visual Studio.<br>
-   If you use a Visual Studio version higher than VC++ 2008, apply conversion of the workspace.
-   Such conversion should be suggested automatically by Visual Studio.
+2. Open the solution file *freeimage\\FreeImage.*.sln* in your Visual Studio. 
+  
+   If you use a Visual Studio version higher than VC++ 2008, apply conversion of the workspace. 
+   Such conversion should be suggested automatically by Visual  Studio. 
+    
+3. Select a  configuration to build. 
 
-3. Select a configuration to build.
-   - Choose `Release` if you are building Release binaries.
-   - Choose `Debug` if you are building Debug binaries.
+   - Choose **Release**  if you are building Release binaries. 
+   - Choose **Debug** if you are building  Debug binaries. 
 
-   *Note:*
-
-   If you want to build a debug version of FreeImage binaries then you need to rename the following files in FreeImage projects:
+   *Note:* 
 
+   If you want to  build a debug version of FreeImage binaries then you need to rename the following files in FreeImage and FreeimagePlus projects:
+   
    Project -> Properties -> Configuration Properties -> Linker -> General -> Output File
 
-       FreeImage*d*.dll  to FreeImage.dll
+       FreeImage*d*.dll  to FreeImage.dll 
+       FreeImagePlus*d*.dll to FreeImagePlus.dll 
 
    Project -> Properties -> Configuration Properties -> Linker -> Debugging-> Generate Program Database File
 
-       FreeImage*d*.pdb  to FreeImage.pdb
+       FreeImage*d*.pdb  to FreeImage.pdb 
+       FreeImagePlus*d*.pdb to FreeImagePlus.pdb 
 
    Project -> Properties -> Configuration Properties -> Linker -> Advanced-Import Library
 
-       FreeImage*d*.lib  to FreeImage.lib
+       FreeImage*d*.lib  to FreeImage.lib 
+       FreeImagePlus*d*.lib  to FreeImagePlus.lib 
 
-   Project -> Properties -> Configuration Properties -> Build Events -> Post -> Build Event -> Command Line
+   Project -> Properties -> Configuration Properties -> Build Events -> Post -> Build Event -> Command Line 
 
-       FreeImage*d*.dll     to FreeImage.dll
-       FreeImage*d*.lib     to FreeImage.lib
+       FreeImage*d*.dll     to FreeImage.dll 
+       FreeImage*d*.lib     to FreeImage.lib 
+       FreeImagePlus*d*.dll to FreeImagePlus.dll 
+       FreeImagePlus*d*.lib to FreeImagePlus.lib 
 
-   Additionally, rename in project FreeImagePlus
+   Additionally, rename in project FreeImagePlus 
+   
+   Project -> Properties -> Configuration  Properties -> Linker -> Input -> Additional Dependencies 
 
-   Project -> Properties -> Configuration  Properties -> Linker -> Input -> Additional Dependencies
+       from FreeImage*d*.lib to FreeImage.lib 
 
-       from FreeImage*d*.lib to FreeImage.lib
+4. Select a platform to build. 
 
-4. Select a platform to build.
-   - Choose `Win32` if you are building for a 32 bit platform.
-   - Choose `x64` if you are building for a 64 bit platform.
+   - Choose *Win32* if you are building for a 32 bit platform. 
+   - Choose *x64* if you are building for a 64 bit platform. 
 
-5. Start the building process.<br>
-   As a result, you should have the library files of FreeImage product in `freeimage/Dist` folder (`FreeImage.dll` and `FreeImage.lib`).
+5. Start the building process. 
+
+   As a result, you should have the  library files of FreeImage product  in *freeimage\\Dist* folder (*FreeImage.dll* and *FreeImage.lib*) and in *freeimage\\Wrapper\\FreeImagePlus\\dist* folder (*FreeImagePlus.dll* and *FreeImagePlus.lib*).
 
 @subsection dev_guides__building_3rdparty_win_3_4 VTK
 
-VTK Integration Services component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library.
+VTK is an open-source, freely available software system for 3D computer graphics, image processing and visualization. VTK Integration Services component provides adaptation functionality for visualization of OCCT topological shapes by means of VTK library.
 
-1. Download the necessary archive from https://www.vtk.org/VTK/resources/software.html and unpack it into `3rdparty` folder.<br>
-   As a result, you will get a folder named, for example, `3rdparty/VTK-6.1.0`.
-   Further in this document, this folder is referred to as `VTK`.
+### The building procedure:
+
+1. Download the necessary archive from https://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>
+
+   Further in this document, this folder is referred to as *VTK*.
 
 2. Use CMake to generate VS projects for building the library:
-   - Start CMake-GUI and select `VTK` folder as source path, and the folder of your choice for VS project and intermediate build data.
+   - Start CMake-GUI and select VTK folder as source path, and the folder of your choice for VS project and intermediate build data.
    - Click **Configure**.
    - Select the VS version to be used from the ones you have installed (we recommend using VS 2015) and the architecture (32 or 64-bit).
-   - Generate VS projects with default CMake options. The open solution `VTK.sln` will be generated in the build folder.
+   - Generate VS projects with default CMake options. The open solution *VTK.sln* will be generated in the build folder.
 
 3. Build project VTK in Release mode.
 
+
 @section build_3rdparty_linux Linux
 
-This section presents additional guidelines for building third-party products used by Open CASCADE Technology and samples on Linux platform.
+This document presents additional guidelines for building third-party 
+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 at 
+https://opencascade.com/content/3rd-party-components.
+
+There are two types of third-party products, which are  necessary to build OCCT: 
+  
+* Mandatory  products: 
+	* Tcl/Tk 8.5 - 8.6;  
+	* FreeType 2.4.10 - 2.5.3;
+* Optional  products: 
+	* TBB 3.x - 4.x;
+	* FreeImage 3.14.1 - 3.16.0;
+	* VTK 6.1.0.
 
 @subsection dev_guides__building_3rdparty_linux_4 Installation From Official Repositories
 
 **Debian-based distributives**
 
-All 3rd-party products required for building of OCCT could be installed from official repositories.
-You may install them from console using apt-get utility:
+All 3rd-party products required for building of OCCT could be installed
+from official repositories. You may install them from console using apt-get utility:
 
     sudo apt-get install tcllib tklib tcl-dev tk-dev libfreetype-dev libx11-dev libgl1-mesa-dev libfreeimage-dev
     sudo apt-get install rapidjson-dev libdraco-dev
@@ -227,148 +279,148 @@ Building is possible with C++ compliant compiler:
 
     sudo apt-get install g++
 
-@subsection dev_guides__building_3rdparty_linux_2_1 Tcl/Tk
+@subsection dev_guides__building_3rdparty_linux_2_1 Tcl/Tk 
 
-Tcl/Tk is required for DRAW test harness.
+Tcl/Tk is required for DRAW test harness. 
 
 **Installation from sources: Tcl**
-
-Download the necessary archive from https://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 (`TCL_SRC_DIR`).
-
-       cd TCL_SRC_DIR/unix
-
-2. Run the `configure` command:
-
-       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR
-
-   For a 64 bit platform also add `--enable-64bit` option to the command line.
-
-3. If the configure command has finished successfully, start the building process:
-
-       make
-
-4. If building is finished successfully, start the installation of Tcl.
-   All binary and service files of the product will be copied to the directory defined by `TCL_INSTALL_DIR`
-
-       make install
-
-**Installation from sources: Tk**
-
+  
 Download the necessary archive from https://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 (`TK_SRC_DIR`)
+1. Enter the unix sub-directory of the directory where the Tcl source  files are located <i>(TCL_SRC_DIR)</i>. 
 
-       cd TK_SRC_DIR/unix
+       cd TCL_SRC_DIR/unix   
 
-2. Run the `configure` command, where `TCL_LIB_DIR` is `TCL_INSTALL_DIR/lib`.
+2. Run the *configure* command:
 
-       configure --enable-gcc  --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR  --prefix=TK_INSTALL_DIR
+       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
 
-   For a 64 bit platform also add `--enable-64bit` option to the command line.
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
+  
+3. If the configure command has finished successfully, start  the building process:
+  
+       make   
 
-3. If the configure command has finished successfully, start the building process:
+4. If building is finished successfully, start the installation of Tcl. 
+   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR* 
 
-       make
+       make install   
 
-4. If the building has finished successfully, start the installation of Tk.
-   All binary and service files of the product will be copied
-   to the directory defined by `TK_INSTALL_DIR` (usually it is `TCL_INSTALL_DIR`)
+**Installation from sources: Tk**
+  
+Download the necessary archive from https://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> 
 
-       make install
+       cd TK_SRC_DIR/unix   
+
+2. Run the configure command, where <i>TCL_LIB_DIR</i> is *TCL_INSTALL_DIR/lib*.
+
+       configure --enable-gcc  --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR  --prefix=TK_INSTALL_DIR   
+
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
+
+3. If the configure command has finished successfully, start the building process: 
+
+       make   
+
+4. If the building has finished successfully, start the installation of Tk. 
+   All binary and service files of the product will be copied 
+   to the directory defined by *TK_INSTALL_DIR* (usually it is *TCL_INSTALL_DIR*) 
+
+       make install   
 
 @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://freetype.org/ and unpack it.
-
-1. Enter the directory where the source files of FreeType are located (`FREETYPE_SRC_DIR`).
+FreeType is required for text display in the 3D viewer. 
+Download the necessary archive from https://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>. 
 
        cd FREETYPE_SRC_DIR   
 
-2. Run the `configure` command:
+2. Run the *configure* command: 
+  
+       configure  --prefix=FREETYPE_INSTALL_DIR   
 
-       configure  --prefix=FREETYPE_INSTALL_DIR
+   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
+    
+3. If the *configure* command has finished successfully, start  the building process: 
 
-   For a 64 bit platform also add `CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'` option to the command line.
+       make   
 
-3. If the `configure` command has finished successfully, start the building process:
-
-       make
-
-4. If the building has finished successfully, start the installation of FreeType.
-   All binary and service files of the product will be copied to the directory defined by `FREETYPE_INSTALL_DIR`
-
-       make install
+4. If the building has finished successfully, start the installation of FreeType. 
+   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR* 
+    
+       make install   
 
+    
 @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.
-Go to the **Download** page, find the release version you need and pick the archive for Linux platform.
+This third-party product is  installed with binaries from the archive that can be downloaded from https://github.com/intel/tbb.
+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/ and unpack it.
-The directory with unpacked sources is  further referred to as `FREEIMAGE_SRC_DIR`.
+Download the necessary archive from https://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*: 
+   In line 60 insert the following: 
 
-1. Modify `FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h`:<br>
-   In line 60 insert the following:
+       #include string.h   
 
-       #include string.h
+2. Enter the directory where the source files of FreeImage are located <i>(FREEIMAGE_SRC_DIR)</i>. 
+  
+       cd FREEIMAGE_SRC_DIR   
 
-2. Enter the directory where the source files of FreeImage are located (`FREEIMAGE_SRC_DIR`).
+3. Run the building process 
+  
+       make   
 
-       cd FREEIMAGE_SRC_DIR
+4. Run the installation process 
 
-3. Run the building process
-
-       make
-
-4. Run the installation process
-
-   a. If you have the permission to write into directories `/usr/include` and `/usr/lib`, run the following command:
-
-          make install
-
-   b. If you do not have this permission, you need to modify file `FREEIMAGE_SRC_DIR/Makefile.gnu`:
+   a. If you have the permission to write into directories <i>/usr/include</i> and <i>/usr/lib</i>, run the following command: 
 
+          make install   
+   b. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.gnu*: 
+  
       Change lines 7-9 from:
+  
+          DESTDIR ?= /   
+          INCDIR  ?= $(DESTDIR)/usr/include   
+          INSTALLDIR  ?= $(DESTDIR)/usr/lib   
 
-          DESTDIR ?= /
-          INCDIR  ?= $(DESTDIR)/usr/include
-          INSTALLDIR  ?= $(DESTDIR)/usr/lib
+      to: 
 
+          DESTDIR  ?= $(DESTDIR)   
+          INCDIR  ?= $(DESTDIR)/include   
+          INSTALLDIR  ?= $(DESTDIR)/lib   
+
+      Change lines 65-67 from: 
+
+          install  -m 644 -o root -g root $(HEADER) $(INCDIR)   
+          install  -m 644 -o root -g root $(STATICLIB) $(INSTALLDIR)   
+          install  -m 755 -o root -g root $(SHAREDLIB) $(INSTALLDIR)   
+  
       to:
 
-          DESTDIR  ?= $(DESTDIR)
-          INCDIR  ?= $(DESTDIR)/include
-          INSTALLDIR  ?= $(DESTDIR)/lib
-
-      Change lines 65-67 from:
-
-          install  -m 644 -o root -g root $(HEADER) $(INCDIR)
-          install  -m 644 -o root -g root $(STATICLIB) $(INSTALLDIR)
-          install  -m 755 -o root -g root $(SHAREDLIB) $(INSTALLDIR)
-
-      to:
-
-          install  -m 755 $(HEADER) $(INCDIR)
-          install  -m 755 $(STATICLIB) $(INSTALLDIR)
+          install  -m 755 $(HEADER) $(INCDIR)   
+          install  -m 755 $(STATICLIB) $(INSTALLDIR)   
           install  -m 755 $(SHAREDLIB) $(INSTALLDIR)
 
-      Change line 70 from:
+      Change line 70 from: 
 
           ldconfig
 
       to:
   
-          \#ldconfig
+          \#ldconfig   
+    
+   Then run the installation process by the following command: 
 
-   Then run the installation process by the following command:
-
-        make DESTDIR=FREEIMAGE_INSTALL_DIR  install
+        make DESTDIR=FREEIMAGE_INSTALL_DIR  install   
 
 5. Clean temporary files
 
@@ -376,180 +428,201 @@ The directory with unpacked sources is  further referred to as `FREEIMAGE_SRC_DI
 
 @subsection dev_guides__building_3rdparty_linux_3_4 VTK
 
+You can download VTK sources from https://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.
 
-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:
+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:
 
        ccmake VTK_SRC_DIR
 
-   * Press `[c]` to make the initial configuration
-   * Define the necessary options in `VTK_INSTALL_PREFIX`
-   * Press `[c]` to make the final configuration
-   * Press `[g]` to generate `Makefile` and exit
+   * Press <i>[c]</i> to make the  initial configuration
+   * Define the necessary options in *VTK_INSTALL_PREFIX*
+   * Press <i>[c]</i> to make the final  configuration
+   * Press <i>[g]</i> to generate  Makefile and exit
 
 3. Start the building of VTK:
 
        make
 
-4. Start the installation of VTK. Binaries will be installed according to the `VTK_INSTALL_PREFIX` option.
+4. Start the installation of VTK. Binaries will be installed according to the *VTK_INSTALL_PREFIX* option.
 
        make install
 
 @section build_3rdparty_macos Mac OS X
 
-This section 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).
+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). 
 
-@subsection dev_guides__building_3rdparty_osx_2_1 Tcl/Tk
+The links for downloading the third-party products are available at https://opencascade.com/content/3rd-party-components.
 
-Tcl/Tk is required for DRAW test harness.
+There are two types of third-party products, which are  necessary to build OCCT: 
+  
+* Mandatory  products: 
+	* Tcl/Tk 8.5 - 8.6;
+	* FreeType 2.4.10 - 2.5.3.
+* Optional  products: 
+	* TBB 3.x - 4.x;
+	* FreeImage 3.14.1 - 3.16.0
+  
 
-**Installation from sources: Tcl**
+@subsection dev_guides__building_3rdparty_osx_2_1 Tcl/Tk 8.5 
+
+Tcl/Tk is required for DRAW test harness. Version 8.5 or  8.6 can be used with OCCT. 
+
+**Installation from sources: Tcl 8.5**
 
 Download the necessary archive from https://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 (`TCL_SRC_DIR`).
+1. Enter the *macosx* sub-directory of the directory where the Tcl source files are located <i>(TCL_SRC_DIR)</i>. 
 
-       cd TCL_SRC_DIR/macosx
+       cd TCL_SRC_DIR/macosx   
 
-2. Run the `configure` command
+2. Run the *configure* command 
 
-       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR
+       configure --enable-gcc  --enable-shared --enable-threads --prefix=TCL_INSTALL_DIR   
 
-   For a 64 bit platform also add `--enable-64bit` option to the command line.
+   For a 64 bit platform also add <i>--enable-64bit</i> option to the command line. 
 
-3. If the `configure` command has finished successfully, start the building process
+3. If the *configure* command has finished successfully, start the building process 
 
-       make
+       make   
+  
+4. If building is finished successfully, start the installation of Tcl. 
+   All binary and service files of the product will be copied to the directory defined by *TCL_INSTALL_DIR*. 
 
-4. If building is finished successfully, start the installation of Tcl.
-   All binary and service files of the product will be copied to the directory defined by `TCL_INSTALL_DIR`.
+       make install   
 
-       make install
-
-**Installation from sources: Tk**
+**Installation from sources: Tk 8.5**
 
 Download the necessary archive from https://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 (`TK_SRC_DIR`).
+1. Enter the *macosx* sub-directory of the directory where the  source files of Tk are located <i>(TK_SRC_DIR)</i>. 
 
-       cd TK_SRC_DIR/macosx
+       cd TK_SRC_DIR/macosx   
 
-2. Run the `configure` command, where `TCL_LIB_DIR` is `TCL_INSTALL_DIR/lib`
+2. Run the *configure* command, where TCL_LIB_DIR is  TCL_INSTALL_DIR/lib 
 
-       configure --enable-gcc --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR --prefix=TK_INSTALL_DIR
+       configure --enable-gcc --enable-shared --enable-threads --with-tcl=TCL_LIB_DIR --prefix=TK_INSTALL_DIR   
 
-   For a 64 bit platform also add `--enable-64bit` option to the command line.
+	For a 64 bit platform also add <i>--enable-64bit</i> option to the  command line. 
 
-3. If the `configure` command has finished successfully, start the building process:
+3. If the *configure* command has finished successfully, start the building process:
 
-       make
+       make   
 
-4. If the building has finished successfully, start the installation of Tk.
-   All binary and service files of the product will be copied to the directory defined by `TK_INSTALL_DIR` (usually it is `TCL_INSTALL_DIR`).
+4. If the building has finished successfully, start the  installation of Tk. All binary and service files of the product will be copied to the directory defined by *TK_INSTALL_DIR* (usually it is TCL_INSTALL_DIR) 
 
-       make install
+       make install   
 
-@subsection dev_guides__building_3rdparty_osx_2_2 FreeType
+@subsection dev_guides__building_3rdparty_osx_2_2 FreeType 2.4.10
+  
+FreeType is required for text display in the 3D viewer. 
 
-FreeType is required for text display in the 3D viewer.
-Download the necessary archive from https://freetype.org/ and unpack it.
+Download the necessary archive from https://sourceforge.net/projects/freetype/files/ and unpack it.
 
-1. Enter the directory where the source files of FreeType are located (`FREETYPE_SRC_DIR`).
+1. Enter the directory where the source files of FreeType  are located <i>(FREETYPE_SRC_DIR)</i>. 
 
-       cd FREETYPE_SRC_DIR
+       cd FREETYPE_SRC_DIR   
 
-2. Run the `configure` command
+2. Run the *configure* command 
+  
+       configure  --prefix=FREETYPE_INSTALL_DIR   
 
-       configure  --prefix=FREETYPE_INSTALL_DIR
+   For a 64 bit platform also add <i>CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'</i> option to the command line. 
 
-   For a 64 bit platform also add `CFLAGS='-m64 -fPIC'  CPPFLAGS='-m64 -fPIC'` option to the command line.
+3. If the *configure* command has finished successfully, start  the building process 
 
-3. If the `configure` command has finished successfully, start the building process
+       make   
 
-       make
+4. If building has finished successfully, start the installation of FreeType. 
+   All binary and service files of the product will be copied to the directory defined by *FREETYPE_INSTALL_DIR*.
 
-4. If building has finished successfully, start the installation of FreeType.
-   All binary and service files of the product will be copied to the directory defined by `FREETYPE_INSTALL_DIR`.
+       make install   
+    
+@subsection dev_guides__building_3rdparty_osx_3_1 TBB 3.x or 4.x
 
-       make install
+This third-party product is installed with binaries from the archive 
+that can be downloaded from https://github.com/intel/tbb.
+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*).
 
-@subsection dev_guides__building_3rdparty_osx_3_1 TBB
+@subsection dev_guides__building_3rdparty_osx_3_3 FreeImage 3.14.1 or 3.15.x
 
-This third-party product is installed with binaries from the archive that can be downloaded from https://github.com/intel/tbb.
-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 product (`tbb30_018oss_osx.tgz`).
-
-@subsection dev_guides__building_3rdparty_osx_3_3 FreeImage
-
-Download the necessary archive from
+Download the necessary archive from 
 https://sourceforge.net/projects/freeimage/files/Source%20Distribution/
-and unpack it. The directory with unpacked sources is further referred to as `FREEIMAGE_SRC_DIR`.
+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`](https://tracker.dev.opencascade.org/file_download.php?file_id=6937&type=bug) in OCCT Mantis bug tracker.
+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).
 
-1. If you build FreeImage 3.15.x you can skip this step.
+1. If you build FreeImage 3.15.x you can skip this  step. 
+   Modify <i>FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h:</i> 
+  
+   In line 60 insert the following: 
 
-   Modify `FREEIMAGE_SRC_DIR/Source/OpenEXR/Imath/ImathMatrix.h:`<br>
-   In line 60 insert the following:
+       #include string.h 
 
-       #include string.h
+   Modify <i>FREEIMAGE_SRC_DIR/Source/FreeImage/PluginTARGA.cpp:</i> 
+  
+   In line 320 replace: 
 
-   Modify `FREEIMAGE_SRC_DIR/Source/FreeImage/PluginTARGA.cpp`:<br>
-   In line 320 replace:
+       SwapShort(value); 
 
-       SwapShort(value);
+   with: 
 
-   with:
+       SwapShort(&value); 
 
-       SwapShort(&value);
+2. Enter the directory where the source files of FreeImage  are located <i>(FREEIMAGE_SRC_DIR)</i>. 
 
-2. Enter the directory where the source files of FreeImage are located (`FREEIMAGE_SRC_DIR`).
-
-       cd FREEIMAGE_SRC_DIR
+       cd FREEIMAGE_SRC_DIR 
 
 3. Run the building process 
 
-       make
+       make   
 
-4. Run the installation process
+4. Run the installation process 
+   
+   1. If you have the permission to write into <i>/usr/local/include</i>  and <i>/usr/local/lib</i> directories, run the following command: 
 
-   1. If you have the permission to write into `/usr/local/include` and `/usr/local/lib` directories, run the following command:
+          make install   
 
-          make install
+   2. If you do not have this permission, you need to modify file *FREEIMAGE_SRC_DIR/Makefile.osx*: 
 
-   2. If you do not have this permission, you need to modify file `FREEIMAGE_SRC_DIR/Makefile.osx`:<br>
-      Change line 49 from:
+      Change line 49 from:     
 
           PREFIX ?= /usr/local
 
       to:
+   
+          PREFIX  ?= $(PREFIX) 
 
-          PREFIX  ?= $(PREFIX)
+      Change lines 65-69 from: 
 
-      Change lines 65-69 from:
+          install -d -m 755 -o  root -g wheel $(INCDIR) $(INSTALLDIR) 
+          install  -m 644 -o root -g wheel $(HEADER) $(INCDIR) 
+          install  -m 644 -o root -g wheel $(SHAREDLIB) $(STATICLIB) $(INSTALLDIR) 
+          ranlib  -sf $(INSTALLDIR)/$(STATICLIB) 
+          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(LIBNAME) 
+    
+      to: 
 
-          install -d -m 755 -o  root -g wheel $(INCDIR) $(INSTALLDIR)
-          install  -m 644 -o root -g wheel $(HEADER) $(INCDIR)
-          install  -m 644 -o root -g wheel $(SHAREDLIB) $(STATICLIB) $(INSTALLDIR)
-          ranlib  -sf $(INSTALLDIR)/$(STATICLIB)
-          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(LIBNAME)
-
-      to:
-
-          install  -d $(INCDIR) $(INSTALLDIR)
-          install  -m 755 $(HEADER) $(INCDIR)
-          install  -m 755 $(STATICLIB) $(INSTALLDIR)
-          install  -m 755 $(SHAREDLIB) $(INSTALLDIR)
-          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(VERLIBNAME)
+          install  -d $(INCDIR) $(INSTALLDIR) 
+          install  -m 755 $(HEADER) $(INCDIR) 
+          install  -m 755 $(STATICLIB) $(INSTALLDIR) 
+          install  -m 755 $(SHAREDLIB) $(INSTALLDIR) 
+          ln  -sf $(SHAREDLIB) $(INSTALLDIR)/$(VERLIBNAME)  
           ln  -sf $(VERLIBNAME) $(INSTALLDIR)/$(LIBNAME)
 
-      Then run the installation process by the following command:
-
-          make PREFIX=FREEIMAGE_INSTALL_DIR  install
-
-5. Clean temporary files
-
+      Then run the installation process by the following command: 
+  
+          make PREFIX=FREEIMAGE_INSTALL_DIR  install 
+  
+5. Clean temporary files 
+  
        make clean

src/BRepLib/BRepLib.cxx

@@ -1960,12 +1960,6 @@ public:
     return aDeriv.Transformed(mySurfaceTrsf);
   }
 
-  gp_Dir Normal()
-  {
-    gp_Dir aNormal = mySurfaceProps.Normal();
-    return aNormal.Transformed(mySurfaceTrsf);
-  }
-
   // Calculate principal curvatures, which consist of minimal and maximal normal curvatures and
   // the directions on the tangent plane (principal direction) where the extremums are reached
   void Curvature(gp_Dir& thePrincipalDir1, Standard_Real& theCurvature1,
@@ -2004,63 +1998,32 @@ private:
 //purpose  : check the angle at the border between two squares.
 //           Two shares should have a shared front edge.
 //=======================================================================
-GeomAbs_Shape BRepLib::ContinuityOfFaces(const TopoDS_Edge&  theEdge,
-                                         const TopoDS_Face&  theFace1,
-                                         const TopoDS_Face&  theFace2,
-                                         const Standard_Real theAngleTol)
+static GeomAbs_Shape tgtfaces(const TopoDS_Edge& Ed,
+                              const TopoDS_Face& F1,
+                              const TopoDS_Face& F2,
+                              const Standard_Real theAngleTol)
 {
-  Standard_Boolean isSeam = theFace1.IsEqual(theFace2);
+  Standard_Boolean isSeam = F1.IsEqual(F2);
 
-  TopoDS_Edge anEdgeInFace1, anEdgeInFace2;
-  Handle(Geom2d_Curve) aCurve1, aCurve2;
-  
-  Standard_Real aFirst, aLast;
-  
-  if (!theFace1.IsSame (theFace2) &&
-      BRep_Tool::IsClosed (theEdge, theFace1) &&
-      BRep_Tool::IsClosed (theEdge, theFace2))
-  {
-    //Find the edge in the face 1: this edge will have correct orientation
-    TopoDS_Face aFace1 = theFace1;
-    aFace1.Orientation (TopAbs_FORWARD);
-    TopExp_Explorer anExplo (aFace1, TopAbs_EDGE);
-    for (; anExplo.More(); anExplo.Next())
-    {
-      const TopoDS_Edge& anEdge = TopoDS::Edge (anExplo.Current());
-      if (anEdge.IsSame (theEdge))
-      {
-        anEdgeInFace1 = anEdge;
-        break;
-      }
-    }
-    if (anEdgeInFace1.IsNull())
-      return GeomAbs_C0;
-    
-    aCurve1 = BRep_Tool::CurveOnSurface (anEdgeInFace1, aFace1, aFirst, aLast);
-    TopoDS_Face aFace2 = theFace2;
-    aFace2.Orientation (TopAbs_FORWARD);
-    anEdgeInFace2 = anEdgeInFace1;
-    anEdgeInFace2.Reverse();
-    aCurve2 = BRep_Tool::CurveOnSurface (anEdgeInFace2, aFace2, aFirst, aLast);
-  }
-  else
-  {
-    // Obtaining of pcurves of edge on two faces.
-    anEdgeInFace1 = anEdgeInFace2 = theEdge;
-    aCurve1 = BRep_Tool::CurveOnSurface (anEdgeInFace1, theFace1, aFirst, aLast);
-    //For the case of seam edge
-    if (theFace1.IsSame(theFace2))
-      anEdgeInFace2.Reverse();
-    aCurve2 = BRep_Tool::CurveOnSurface (anEdgeInFace2, theFace2, aFirst, aLast);
-  }
+  TopoDS_Edge E = Ed;
 
-  if (aCurve1.IsNull() || aCurve2.IsNull())
+  // Check if pcurves exist on both faces of edge
+  Standard_Real aFirst,aLast;
+  E.Orientation(TopAbs_FORWARD);
+  Handle(Geom2d_Curve) aCurve1 = BRep_Tool::CurveOnSurface(E, F1, aFirst, aLast);
+  if(aCurve1.IsNull())
+    return GeomAbs_C0;
+
+  if (isSeam)
+    E.Orientation(TopAbs_REVERSED);
+  Handle(Geom2d_Curve) aCurve2 = BRep_Tool::CurveOnSurface(E, F2, aFirst, aLast);
+  if(aCurve2.IsNull())
     return GeomAbs_C0;
 
   TopLoc_Location aLoc1, aLoc2;
-  Handle(Geom_Surface) aSurface1 = BRep_Tool::Surface (theFace1, aLoc1);
+  Handle(Geom_Surface) aSurface1 = BRep_Tool::Surface(F1, aLoc1);
   const gp_Trsf& aSurf1Trsf = aLoc1.Transformation();
-  Handle(Geom_Surface) aSurface2 = BRep_Tool::Surface (theFace2, aLoc2);
+  Handle(Geom_Surface) aSurface2 = BRep_Tool::Surface(F2, aLoc2);
   const gp_Trsf& aSurf2Trsf = aLoc2.Transformation();
 
   if (aSurface1->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface)))
@@ -2077,11 +2040,11 @@ GeomAbs_Shape BRepLib::ContinuityOfFaces(const TopoDS_Edge&  theEdge,
     return GeomAbs_CN;
   }
 
-  SurfaceProperties aSP1(aSurface1, aSurf1Trsf, aCurve1, theFace1.Orientation() == TopAbs_REVERSED);
-  SurfaceProperties aSP2(aSurface2, aSurf2Trsf, aCurve2, theFace2.Orientation() == TopAbs_REVERSED);
+  SurfaceProperties aSP1(aSurface1, aSurf1Trsf, aCurve1, F1.Orientation() == TopAbs_REVERSED);
+  SurfaceProperties aSP2(aSurface2, aSurf2Trsf, aCurve2, F2.Orientation() == TopAbs_REVERSED);
 
   Standard_Real f, l, eps;
-  BRep_Tool::Range (theEdge,f,l);
+  BRep_Tool::Range(E,f,l);
   Extrema_LocateExtPC ext;
   Handle(BRepAdaptor_Curve) aHC2;
 
@@ -2092,6 +2055,7 @@ GeomAbs_Shape BRepLib::ContinuityOfFaces(const TopoDS_Edge&  theEdge,
   const Standard_Real anAngleTol2 = theAngleTol * theAngleTol;
 
   gp_Vec aDer1, aDer2;
+  gp_Vec aNorm1;
   Standard_Real aSqLen1, aSqLen2;
   gp_Dir aCrvDir1[2], aCrvDir2[2];
   Standard_Real aCrvLen1[2], aCrvLen2[2];
@@ -2119,26 +2083,13 @@ GeomAbs_Shape BRepLib::ContinuityOfFaces(const TopoDS_Edge&  theEdge,
     aDer2 = aSP2.Derivative();
     aSqLen2 = aDer2.SquareMagnitude();
     Standard_Boolean isSmoothSuspect = (aDer1.CrossSquareMagnitude(aDer2) <= anAngleTol2 * aSqLen1 * aSqLen2);
-    if (isSmoothSuspect)
-    {
-      gp_Dir aNormal1 = aSP1.Normal();
-      if (theFace1.Orientation() == TopAbs_REVERSED)
-        aNormal1.Reverse();
-      gp_Dir aNormal2 = aSP2.Normal();
-      if (theFace2.Orientation() == TopAbs_REVERSED)
-        aNormal2.Reverse();
-      
-      if (aNormal1 * aNormal2 < 0.)
-        return GeomAbs_C0;
-    }
-    
     if (!isSmoothSuspect)
     {
       // Refine by projection
       if (aHC2.IsNull())
       {
         // adaptor for pcurve on the second surface
-        aHC2 = new BRepAdaptor_Curve (anEdgeInFace2, theFace2);
+        aHC2 = new BRepAdaptor_Curve (E, F2);
         ext.Initialize(*aHC2, f, l, Precision::PConfusion());
       }
       ext.Perform(aSP1.Value(), u);
@@ -2334,8 +2285,9 @@ void BRepLib::EncodeRegularity(TopoDS_Edge& E,
   BRep_Builder B;
   if(BRep_Tool::Continuity(E,F1,F2)<=GeomAbs_C0){
     try {
-      GeomAbs_Shape aCont = ContinuityOfFaces(E, F1, F2, TolAng);
+      GeomAbs_Shape aCont = tgtfaces(E, F1, F2, TolAng);
       B.Continuity(E,F1,F2,aCont);
+      
     }
     catch(Standard_Failure const&)
     {

src/BRepLib/BRepLib.hxx

@@ -202,14 +202,7 @@ public:
   //! orientation to have  matter in the solid. Returns
   //! False if the solid is unOrientable (open or incoherent)
   Standard_EXPORT static Standard_Boolean OrientClosedSolid (TopoDS_Solid& solid);
-
-  //! Returns the order of continuity between two faces
-  //! connected by an edge
-  Standard_EXPORT static GeomAbs_Shape ContinuityOfFaces(const TopoDS_Edge&  theEdge,
-                                                         const TopoDS_Face&  theFace1,
-                                                         const TopoDS_Face&  theFace2,
-                                                         const Standard_Real theAngleTol);
-
+  
   //! Encodes the Regularity of edges on a Shape.
   //! Warning: <TolAng> is an angular tolerance, expressed in Rad.
   //! Warning: If the edges's regularity are coded before, nothing

src/BRepLib/BRepLib_PointCloudShape.cxx

@@ -1,307 +0,0 @@
-// Copyright (c) 2021 OPEN CASCADE SAS
-//
-// This file is part of Open CASCADE Technology software library.
-//
-// This library is free software; you can redistribute it and/or modify it under
-// the terms of the GNU Lesser General Public License version 2.1 as published
-// by the Free Software Foundation, with special exception defined in the file
-// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-// distribution for complete text of the license and disclaimer of any warranty.
-//
-// Alternatively, this file may be used under the terms of Open CASCADE
-// commercial license or contractual agreement.
-
-#include <BRepLib_PointCloudShape.hxx>
-
-#include <BRep_Tool.hxx>
-#include <BRepGProp.hxx>
-#include <BRepLib_ToolTriangulatedShape.hxx>
-#include <BRepTools.hxx>
-#include <BRepTopAdaptor_FClass2d.hxx>
-#include <Geom_Surface.hxx>
-#include <GProp_GProps.hxx>
-#include <gp_Pnt.hxx>
-#include <gp_Vec.hxx>
-#include <Precision.hxx>
-#include <TopExp_Explorer.hxx>
-#include <TopoDS.hxx>
-#include <TopoDS_Face.hxx>
-#include <TopoDS_Shape.hxx>
-
-#include <random>
-
-// =======================================================================
-// function : BRepLib_PointCloudShape
-// purpose  :
-// =======================================================================
-BRepLib_PointCloudShape::BRepLib_PointCloudShape (const TopoDS_Shape& theShape,
-                                                  const Standard_Real theTol)
-: myShape (theShape),
-  myDist (0.0),
-  myTol (theTol),
-  myNbPoints (0)
-{
-  //
-}
-
-// =======================================================================
-// function : ~BRepLib_PointCloudShape
-// purpose  :
-// =======================================================================
-BRepLib_PointCloudShape::~BRepLib_PointCloudShape()
-{
-  //
-}
-
-// =======================================================================
-// function : NbPointsByDensity
-// purpose  :
-// =======================================================================
-Standard_Integer BRepLib_PointCloudShape::NbPointsByDensity (const Standard_Real theDensity)
-{
-  clear();
-  Standard_Real aDensity = (theDensity < Precision::Confusion() ? computeDensity() : theDensity);
-  if (aDensity < Precision::Confusion())
-  {
-    return 0;
-  }
-
-  Standard_Integer aNbPoints = 0;
-  for (TopExp_Explorer aExpF(myShape, TopAbs_FACE); aExpF.More(); aExpF.Next())
-  {
-    Standard_Real anArea = faceArea(aExpF.Current());
-
-    Standard_Integer aNbPnts = Max ((Standard_Integer)std::ceil(anArea / theDensity), 1);
-    myFacePoints.Bind(aExpF.Current(), aNbPnts);
-    aNbPoints+= aNbPnts;
-  }
-  return aNbPoints;
-}
-
-// =======================================================================
-// function : GeneratePointsByDensity
-// purpose  :
-// =======================================================================
-Standard_Boolean BRepLib_PointCloudShape::GeneratePointsByDensity (const Standard_Real theDensity)
-{
-  if (myFacePoints.IsEmpty())
-  {
-    if (NbPointsByDensity (theDensity) == 0)
-    {
-      return Standard_False;
-    }
-  }
-
-  Standard_Integer aNbAdded = 0;
-  for (TopExp_Explorer aExpF (myShape, TopAbs_FACE); aExpF.More(); aExpF.Next())
-  {
-    if (addDensityPoints (aExpF.Current()))
-    {
-      aNbAdded++;
-    }
-  }
-  return (aNbAdded > 0);
-}
-
-// =======================================================================
-// function : GeneratePointsByTriangulation
-// purpose  :
-// =======================================================================
-Standard_Boolean BRepLib_PointCloudShape::GeneratePointsByTriangulation()
-{
-  clear();
-
-  Standard_Integer aNbAdded = 0;
-  for (TopExp_Explorer aExpF (myShape, TopAbs_FACE); aExpF.More(); aExpF.Next())
-  {
-    if (addTriangulationPoints (aExpF.Current()))
-    {
-      aNbAdded++;
-    }
-  }
-  return (aNbAdded > 0);
-}
-
-// =======================================================================
-// function : faceArea
-// purpose  :
-// =======================================================================
-Standard_Real BRepLib_PointCloudShape::faceArea (const TopoDS_Shape& theShape)
-{
-  Standard_Real anArea = 0.0;
-  if (myFaceArea.Find (theShape, anArea))
-  {
-    return anArea;
-  }
-
-  GProp_GProps aFaceProps;
-  BRepGProp::SurfaceProperties (theShape, aFaceProps);
-  anArea = aFaceProps.Mass();
-  myFaceArea.Bind (theShape, anArea);
-  return anArea;
-}
-
-// =======================================================================
-// function : computeDensity
-// purpose  :
-// =======================================================================
-Standard_Real BRepLib_PointCloudShape::computeDensity()
-{
-  // at first step find the face with smallest area
-  Standard_Real anAreaMin = Precision::Infinite();
-  for (TopExp_Explorer aExpF (myShape, TopAbs_FACE); aExpF.More(); aExpF.Next())
-  {
-    Standard_Real anArea = faceArea (aExpF.Current());
-    if (anArea < myTol * myTol)
-    {
-      continue;
-    }
-
-    if (anArea < anAreaMin)
-    {
-      anAreaMin = anArea;
-    }
-  }
-  return anAreaMin * 0.1;
-}
-
-// =======================================================================
-// function : NbPointsByTriangulation
-// purpose  :
-// =======================================================================
-Standard_Integer BRepLib_PointCloudShape::NbPointsByTriangulation() const
-{
-  // at first step find the face with smallest area
-  Standard_Integer aNbPoints = 0;
-  for (TopExp_Explorer aExpF (myShape, TopAbs_FACE); aExpF.More(); aExpF.Next())
-  {
-    TopLoc_Location aLoc;
-    Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation (TopoDS::Face (aExpF.Current()), aLoc);
-    if (aTriangulation.IsNull())
-    {
-      continue;
-    }
-
-    aNbPoints += aTriangulation->NbNodes();
-  }
-  return aNbPoints;
-}
-
-// =======================================================================
-// function : addDensityPoints
-// purpose  :
-// =======================================================================
-Standard_Boolean BRepLib_PointCloudShape::addDensityPoints (const TopoDS_Shape& theFace)
-{
-  //addition of the points with specified density on the face by random way
-  Standard_Integer aNbPnts = (myFacePoints.IsBound (theFace) ? myFacePoints.Find (theFace) : 0);
-  if (aNbPnts == 0)
-  {
-    return Standard_False;
-  }
-
-  TopoDS_Face aFace = TopoDS::Face (theFace);
-  Standard_Real anUMin = 0.0, anUMax = 0.0, aVMin = 0.0, aVMax = 0.0;
-  BRepTools::UVBounds (aFace, anUMin, anUMax, aVMin, aVMax);
-  BRepTopAdaptor_FClass2d aClassifier (aFace, Precision::Confusion());
-
-  TopLoc_Location aLoc = theFace.Location();
-  const gp_Trsf& aTrsf = aLoc.Transformation();
-  TopLoc_Location aLoc1;
-  Handle(Geom_Surface) aSurf = BRep_Tool::Surface (aFace, aLoc1);
-  if (aSurf.IsNull())
-  {
-    return Standard_False;
-  }
-
-  std::mt19937 aRandomGenerator(0);
-  std::uniform_real_distribution<> anUDistrib(anUMin, anUMax);
-  std::uniform_real_distribution<> aVDistrib (aVMin,  aVMax);
-  for (Standard_Integer nbCurPnts = 1; nbCurPnts <= aNbPnts;)
-  {
-    const Standard_Real aU = anUDistrib(aRandomGenerator);
-    const Standard_Real aV = aVDistrib (aRandomGenerator);
-    gp_Pnt2d aUVNode (aU, aV);
-    const TopAbs_State  aState = aClassifier.Perform (aUVNode);
-    if (aState == TopAbs_OUT)
-    {
-      continue;
-    }
-
-    nbCurPnts++;
-
-    gp_Pnt aP1;
-    gp_Vec dU, dV;
-    aSurf->D1 (aU, aV, aP1, dU, dV);
-
-    gp_Vec aNorm = dU ^ dV;
-    if (aFace.Orientation() == TopAbs_REVERSED)
-    {
-      aNorm.Reverse();
-    }
-    const Standard_Real aNormMod = aNorm.Magnitude();
-    if (aNormMod > gp::Resolution())
-    {
-      aNorm /= aNormMod;
-    }
-    if (myDist > Precision::Confusion())
-    {
-      std::uniform_real_distribution<> aDistanceDistrib (0.0, myDist);
-      gp_XYZ aDeflPoint =  aP1.XYZ() + aNorm.XYZ() * aDistanceDistrib (aRandomGenerator);
-      aP1.SetXYZ (aDeflPoint);
-    }
-    aP1.Transform (aTrsf);
-    if (aNormMod > gp::Resolution())
-    {
-      aNorm = gp_Dir (aNorm).Transformed (aTrsf);
-    }
-    addPoint (aP1, aNorm, aUVNode, aFace);
-  }
-  return Standard_True;
-}
-
-// =======================================================================
-// function : addTriangulationPoints
-// purpose  :
-// =======================================================================
-Standard_Boolean  BRepLib_PointCloudShape::addTriangulationPoints (const TopoDS_Shape& theFace)
-{
-  TopLoc_Location aLoc;
-  TopoDS_Face aFace = TopoDS::Face (theFace);
-  Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation (aFace, aLoc);
-  if (aTriangulation.IsNull())
-  {
-    return Standard_False;
-  }
-
-  TopLoc_Location aLoc1;
-  Handle(Geom_Surface) aSurf = BRep_Tool::Surface (aFace, aLoc1);
-  const gp_Trsf& aTrsf = aLoc.Transformation();
-
-  BRepLib_ToolTriangulatedShape::ComputeNormals (aFace, aTriangulation);
-  Standard_Boolean aHasUVNode = aTriangulation->HasUVNodes();
-  for (Standard_Integer aNodeIter = 1; aNodeIter <= aTriangulation->NbNodes(); ++aNodeIter)
-  {
-    gp_Pnt aP1     = aTriangulation->Node  (aNodeIter);
-    gp_Dir aNormal = aTriangulation->Normal(aNodeIter);
-    if (!aLoc.IsIdentity())
-    {
-      aP1    .Transform (aTrsf);
-      aNormal.Transform (aTrsf);
-    }
-
-    const gp_Pnt2d anUVNode = aHasUVNode ? aTriangulation->UVNode (aNodeIter) : gp_Pnt2d();
-    addPoint (aP1, aNormal, anUVNode, aFace);
-  }
-  return Standard_True;
-}
-
-// =======================================================================
-// function : clear
-// purpose  :
-// =======================================================================
-void BRepLib_PointCloudShape::clear()
-{
-  myFaceArea.Clear();
-  myFacePoints.Clear();
-}

src/BRepLib/BRepLib_PointCloudShape.hxx

@@ -1,116 +0,0 @@
-// Copyright (c) 2021 OPEN CASCADE SAS
-//
-// This file is part of Open CASCADE Technology software library.
-//
-// This library is free software; you can redistribute it and/or modify it under
-// the terms of the GNU Lesser General Public License version 2.1 as published
-// by the Free Software Foundation, with special exception defined in the file
-// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-// distribution for complete text of the license and disclaimer of any warranty.
-//
-// Alternatively, this file may be used under the terms of Open CASCADE
-// commercial license or contractual agreement.
-
-#ifndef _BRepLib_PointCloudShape_HeaderFile
-#define _BRepLib_PointCloudShape_HeaderFile
-
-#include <TopTools_DataMapOfShapeInteger.hxx>
-#include <TopTools_DataMapOfShapeReal.hxx>
-#include <Quantity_Color.hxx>
-#include <Precision.hxx>
-
-//! This tool is intended to get points from shape with specified distance from shape along normal.
-//! Can be used to simulation of points obtained in result of laser scan of shape.
-//! There are 2 ways for generation points by shape:
-//! 1. Generation points with specified density
-//! 2. Generation points using triangulation Nodes
-//! Generation of points by density using the GeneratePointsByDensity() function is not thread safe.
-class BRepLib_PointCloudShape
-{
-public:
-
-  DEFINE_STANDARD_ALLOC
-
-  //! Constructor initialized by shape
-  Standard_EXPORT BRepLib_PointCloudShape (const TopoDS_Shape& theShape = TopoDS_Shape(),
-                                           const Standard_Real theTol = Precision::Confusion());
-
-  //! Virtual destructor
-  Standard_EXPORT virtual ~BRepLib_PointCloudShape();
-
-  //! Return loaded shape.
-  const TopoDS_Shape& Shape() const { return myShape; }
-
-  //! Set shape.
-  void SetShape (const TopoDS_Shape& theShape) { myShape = theShape; }
-
-  //! Return tolerance.
-  Standard_Real Tolerance() const { return myTol; }
-
-  //! Set tolerance.
-  void SetTolerance (Standard_Real theTol) { myTol = theTol; }
-
-  //! Returns value of the distance to define deflection of points from shape along normal to shape; 0.0 by default.
-  Standard_Real GetDistance() const { return myDist; }
-
-  //! Sets value of the distance to define deflection of points from shape along normal to shape.
-  //! Negative values of theDist parameter are ignored.
-  void SetDistance (const Standard_Real theDist) { myDist = theDist; }
-
-  //! Returns size of the point cloud for specified density.
-  Standard_EXPORT Standard_Integer NbPointsByDensity (const Standard_Real theDensity = 0.0);
-
-  //! Returns size of the point cloud for using triangulation.
-  Standard_EXPORT Standard_Integer NbPointsByTriangulation() const;
-
-  //! Computes points with specified density for initial shape.
-  //! If parameter Density is equal to 0 then density will be computed automatically by criterion:
-  //! - 10 points per minimal unreduced face area.
-  //!
-  //! Note: this function should not be called from concurrent threads without external lock.
-  Standard_EXPORT Standard_Boolean GeneratePointsByDensity (const Standard_Real theDensity = 0.0);
-
-  //! Get points from triangulation existing in the shape.
-  Standard_EXPORT Standard_Boolean GeneratePointsByTriangulation();
-
-protected:
-
-  //! Compute area of the specified face.
-  Standard_EXPORT Standard_Real faceArea (const TopoDS_Shape& theShape);
-
-  //! Computes default density points per face.
-  Standard_EXPORT Standard_Real computeDensity();
-
-  //! Adds points to face in accordance with the specified density randomly in the specified range [0, Dist].
-  Standard_EXPORT Standard_Boolean addDensityPoints (const TopoDS_Shape& theFace);
-
-  //! Adds points to face by nodes of the existing triangulation randomly in the specified range [0, Dist].
-  Standard_EXPORT Standard_Boolean addTriangulationPoints (const TopoDS_Shape& theFace);
-
-protected:
-
-  //! Method to clear maps.
-  Standard_EXPORT virtual void clear();
-
-  //! Method to add point, normal to surface in this point and face for which point computed.
-  //! @param[in] thePoint 3D point on the surface
-  //! @param[in] theNorm  surface normal at this point
-  //! @param[in] theUV    surface UV parameters
-  //! @param[in] theFace  surface (face) definition
-  Standard_EXPORT virtual void addPoint (const gp_Pnt& thePoint,
-                                         const gp_Vec& theNorm,
-                                         const gp_Pnt2d& theUV,
-                                         const TopoDS_Shape& theFace) = 0;
-
-protected:
-
-  TopoDS_Shape  myShape;
-  Standard_Real myDist;
-  Standard_Real myTol;
-  TopTools_DataMapOfShapeReal    myFaceArea;
-  TopTools_DataMapOfShapeInteger myFacePoints;
-  Standard_Integer myNbPoints;
-
-};
-
-#endif // _BRepLib_PointCloudShape_HeaderFile

src/BRepLib/BRepLib_ToolTriangulatedShape.cxx

@@ -1,83 +0,0 @@
-// Copyright (c) 2021 OPEN CASCADE SAS
-//
-// This file is part of Open CASCADE Technology software library.
-//
-// This library is free software; you can redistribute it and/or modify it under
-// the terms of the GNU Lesser General Public License version 2.1 as published
-// by the Free Software Foundation, with special exception defined in the file
-// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-// distribution for complete text of the license and disclaimer of any warranty.
-//
-// Alternatively, this file may be used under the terms of Open CASCADE
-// commercial license or contractual agreement.
-
-#include <BRepLib_ToolTriangulatedShape.hxx>
-
-#include <BRep_Tool.hxx>
-#include <GeomLib.hxx>
-#include <Poly.hxx>
-#include <Poly_Connect.hxx>
-#include <Precision.hxx>
-#include <TopLoc_Location.hxx>
-#include <TopoDS.hxx>
-#include <TopoDS_Face.hxx>
-
-// =======================================================================
-// function : ComputeNormals
-// purpose  :
-// =======================================================================
-void BRepLib_ToolTriangulatedShape::ComputeNormals (const TopoDS_Face& theFace,
-                                                    const Handle(Poly_Triangulation)& theTris,
-                                                    Poly_Connect& thePolyConnect)
-{
-  if (theTris.IsNull()
-   || theTris->HasNormals())
-  {
-    return;
-  }
-
-  // take in face the surface location
-  const TopoDS_Face    aZeroFace = TopoDS::Face (theFace.Located (TopLoc_Location()));
-  Handle(Geom_Surface) aSurf     = BRep_Tool::Surface (aZeroFace);
-  if (!theTris->HasUVNodes() || aSurf.IsNull())
-  {
-    // compute normals by averaging triangulation normals sharing the same vertex
-    Poly::ComputeNormals (theTris);
-    return;
-  }
-
-  const Standard_Real aTol = Precision::Confusion();
-  Standard_Integer aTri[3];
-  gp_Dir aNorm;
-  theTris->AddNormals();
-  for (Standard_Integer aNodeIter = 1; aNodeIter <= theTris->NbNodes(); ++aNodeIter)
-  {
-    // try to retrieve normal from real surface first, when UV coordinates are available
-    if (GeomLib::NormEstim (aSurf, theTris->UVNode (aNodeIter), aTol, aNorm) > 1)
-    {
-      if (thePolyConnect.Triangulation() != theTris)
-      {
-        thePolyConnect.Load (theTris);
-      }
-
-      // compute flat normals
-      gp_XYZ eqPlan (0.0, 0.0, 0.0);
-      for (thePolyConnect.Initialize (aNodeIter); thePolyConnect.More(); thePolyConnect.Next())
-      {
-        theTris->Triangle (thePolyConnect.Value()).Get (aTri[0], aTri[1], aTri[2]);
-        const gp_XYZ v1 (theTris->Node (aTri[1]).Coord() - theTris->Node (aTri[0]).Coord());
-        const gp_XYZ v2 (theTris->Node (aTri[2]).Coord() - theTris->Node (aTri[1]).Coord());
-        const gp_XYZ vv = v1 ^ v2;
-        const Standard_Real aMod = vv.Modulus();
-        if (aMod >= aTol)
-        {
-          eqPlan += vv / aMod;
-        }
-      }
-      const Standard_Real aModMax = eqPlan.Modulus();
-      aNorm = (aModMax > aTol) ? gp_Dir (eqPlan) : gp::DZ();
-    }
-
-    theTris->SetNormal (aNodeIter, aNorm);
-  }
-}

src/BRepLib/BRepLib_ToolTriangulatedShape.hxx

@@ -1,50 +0,0 @@
-// Copyright (c) 2021 OPEN CASCADE SAS
-//
-// This file is part of Open CASCADE Technology software library.
-//
-// This library is free software; you can redistribute it and/or modify it under
-// the terms of the GNU Lesser General Public License version 2.1 as published
-// by the Free Software Foundation, with special exception defined in the file
-// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-// distribution for complete text of the license and disclaimer of any warranty.
-//
-// Alternatively, this file may be used under the terms of Open CASCADE
-// commercial license or contractual agreement.
-
-#ifndef _BrepLib_ToolTriangulatedShape_HeaderFile
-#define _BrepLib_ToolTriangulatedShape_HeaderFile
-
-#include <Poly_Connect.hxx>
-#include <Poly_Triangulation.hxx>
-
-class TopoDS_Face;
-class Poly_Triangulation;
-
-//! Provides methods for calculating normals to Poly_Triangulation of TopoDS_Face.
-class BRepLib_ToolTriangulatedShape
-{
-public:
-
-  //! Computes nodal normals for Poly_Triangulation structure using UV coordinates and surface.
-  //! Does nothing if triangulation already defines normals.
-  //! @param[in] theFace the face
-  //! @param[in] theTris the definition of a face triangulation
-  static void ComputeNormals (const TopoDS_Face& theFace,
-                              const Handle(Poly_Triangulation)& theTris)
-  {
-    Poly_Connect aPolyConnect;
-    ComputeNormals (theFace, theTris, aPolyConnect);
-  }
-
-  //! Computes nodal normals for Poly_Triangulation structure using UV coordinates and surface.
-  //! Does nothing if triangulation already defines normals.
-  //! @param[in] theFace the face
-  //! @param[in] theTris the definition of a face triangulation
-  //! @param[in,out] thePolyConnect optional, initialized tool for exploring triangulation
-  Standard_EXPORT static void ComputeNormals (const TopoDS_Face& theFace,
-                                              const Handle(Poly_Triangulation)& theTris,
-                                              Poly_Connect& thePolyConnect);
-
-};
-
-#endif

src/BRepLib/FILES

@@ -30,12 +30,8 @@ BRepLib_MakeVertex.hxx
 BRepLib_MakeWire.cxx
 BRepLib_MakeWire.hxx
 BRepLib_MakeWire_1.cxx
-BRepLib_PointCloudShape.hxx
-BRepLib_PointCloudShape.cxx
 BRepLib_ShapeModification.hxx
 BRepLib_ShellError.hxx
-BRepLib_ToolTriangulatedShape.hxx
-BRepLib_ToolTriangulatedShape.cxx
 BRepLib_ValidateEdge.cxx
 BRepLib_ValidateEdge.hxx
 BRepLib_WireError.hxx

src/BRepMesh/BRepMesh_ModelPreProcessor.cxx

@@ -133,7 +133,7 @@ namespace
         {
           if (aDEdge->GetCurve()->ParametersNb() == 2)
           {
-            if (splitEdge (aDEdge, aDFace, Abs (getConeStep (aDFace))))
+            if (splitEdge (aDEdge, Abs (getConeStep (aDFace))))
             {
               TopLoc_Location aLoc;
               const Handle (Poly_Triangulation)& aTriangulation =
@@ -178,89 +178,48 @@ namespace
     } 
 
     //! Splits 3D and all pcurves accordingly using the specified step.
-    Standard_Boolean splitEdge(const IMeshData::IEdgePtr&    theDEdge,
-                               const IMeshData::IFaceHandle& theDFace,
-                               const Standard_Real           theDU) const
+    Standard_Boolean splitEdge(const IMeshData::IEdgePtr& theDEdge,
+                               const Standard_Real        theDU) const
     {
-      TopoDS_Edge aE = theDEdge->GetEdge();
-      const TopoDS_Face& aF = theDFace->GetFace();
-
-      Standard_Real aFParam, aLParam;
-
-      Handle(Geom_Curve) aHC = BRep_Tool::Curve (aE, aFParam, aLParam);
-
-      const IMeshData::IPCurveHandle& aIPC1 = theDEdge->GetPCurve(0);
-      const IMeshData::IPCurveHandle& aIPC2 = theDEdge->GetPCurve(1);
-
-      // Calculate the step by parameter of the curve.
-      const gp_Pnt2d& aFPntOfIPC1 = aIPC1->GetPoint (0);
-      const gp_Pnt2d& aLPntOfIPC1 = aIPC1->GetPoint (aIPC1->ParametersNb() - 1);
-      const Standard_Real aMod = Abs (aFPntOfIPC1.Y() - aLPntOfIPC1.Y());
-
-      if (aMod < gp::Resolution())
+      if (!splitCurve<gp_XYZ> (theDEdge->GetCurve (), theDU))
       {
         return Standard_False;
       }
 
-      const Standard_Real aDT = Abs (aLParam - aFParam) / aMod * theDU;
-
-      if (!splitCurve<gp_Pnt> (aHC, theDEdge->GetCurve(), aDT))
+      for (Standard_Integer aPCurveIdx = 0; aPCurveIdx < theDEdge->PCurvesNb(); ++aPCurveIdx)
       {
-        return Standard_False;
+        splitCurve<gp_XY> (theDEdge->GetPCurve (aPCurveIdx), theDU);
       }
 
-      // Define two pcurves of the seam-edge.
-      Handle(Geom2d_Curve) aPC1, aPC2;
-      Standard_Real af, al;
-
-      aE.Orientation (TopAbs_FORWARD);
-      aPC1 = BRep_Tool::CurveOnSurface (aE, aF, af, al);
-
-      aE.Orientation (TopAbs_REVERSED);
-      aPC2 = BRep_Tool::CurveOnSurface (aE, aF, af, al);
-
-      if (aPC1.IsNull() || aPC2.IsNull())
-      {
-        return Standard_False;
-      }
-
-      // Select the correct pcurve of the seam-edge.
-      const gp_Pnt2d& aFPntOfPC1 = aPC1->Value (aPC1->FirstParameter());
-
-      if (Abs (aLPntOfIPC1.X() - aFPntOfPC1.X()) > Precision::Confusion())
-      {
-        std::swap (aPC1, aPC2);
-      }
-
-      splitCurve<gp_Pnt2d> (aPC1, aIPC1, aDT);
-      splitCurve<gp_Pnt2d> (aPC2, aIPC2, aDT);
-
       return Standard_True;
     }
 
     //! Splits the given curve using the specified step.
-    template<class PointType, class GeomCurve, class Curve>
-    Standard_Boolean splitCurve(GeomCurve&          theGeomCurve, 
-                                Curve&              theCurve, 
-                                const Standard_Real theDT) const
+    template<class PointType, class Curve>
+    Standard_Boolean splitCurve(Curve& theCurve, const Standard_Real theDU) const
     {
       Standard_Boolean isUpdated = Standard_False;
+      PointType aDir = theCurve->GetPoint(theCurve->ParametersNb() - 1).Coord() - theCurve->GetPoint(0).Coord();
+      const Standard_Real aModulus = aDir.Modulus();
+      if (aModulus < gp::Resolution())
+      {
+        return isUpdated;
+      }
+      aDir /= aModulus;
 
-      const Standard_Real   aFirstParam = theCurve->GetParameter (0);
-      const Standard_Real    aLastParam = theCurve->GetParameter (theCurve->ParametersNb() - 1);
-      const Standard_Boolean isReversed = aFirstParam > aLastParam;
-
+      const Standard_Real    aLastParam = theCurve->GetParameter(theCurve->ParametersNb() - 1);
+      const Standard_Boolean isReversed = theCurve->GetParameter(0) > aLastParam;  
       for (Standard_Integer aPointIdx = 1; ; ++aPointIdx)
       {
-        const Standard_Real aCurrParam = aFirstParam + aPointIdx * theDT * (isReversed ? -1.0 : 1.0);
-        if (( isReversed &&  (aCurrParam - aLastParam < Precision::PConfusion())) ||
-            (!isReversed && !(aCurrParam - aLastParam < - Precision::PConfusion())))
+        const Standard_Real aCurrParam = theCurve->GetParameter(0) + aPointIdx * theDU * (isReversed ? -1.0 : 1.0); 
+        if (( isReversed &&  (aCurrParam < aLastParam)) ||
+            (!isReversed && !(aCurrParam < aLastParam)))
         {
           break;
         }
 
-        theCurve->InsertPoint (theCurve->ParametersNb() - 1,
-          theGeomCurve->Value (aCurrParam),
+        theCurve->InsertPoint(theCurve->ParametersNb() - 1,
+          theCurve->GetPoint(0).Translated (aDir * aPointIdx * theDU),
           aCurrParam);
 
         isUpdated = Standard_True;

src/BndLib/BndLib_Add3dCurve.cxx

@@ -217,7 +217,7 @@ void BndLib_Add3dCurve::Add( const Adaptor3d_Curve& C,
 	  if(Bsaux->LastParameter()  < U2 ) u2  = Bsaux->LastParameter();
 	  //  modified by NIZHNY-EAP Fri Dec  3 14:29:18 1999 ___END___
 	}
-        Standard_Real aSegmentTol = 2. * Precision::PConfusion();
+        Standard_Real aSegmentTol = Precision::PConfusion();
         if (Abs(u2 - u1) < aSegmentTol)
           aSegmentTol = Abs(u2 - u1) * 0.01;
 	Bsaux->Segment(u1, u2, aSegmentTol);

src/ChFi3d/ChFi3d.cxx

@@ -134,12 +134,12 @@ ChFiDS_TypeOfConcavity ChFi3d::DefineConnectType(const TopoDS_Edge&     E,
 //function : IsTangentFaces
 //purpose  : 
 //=======================================================================
-Standard_Boolean ChFi3d::IsTangentFaces(const TopoDS_Edge&  theEdge,
-                                        const TopoDS_Face&  theFace1,
-                                        const TopoDS_Face&  theFace2,
-                                        const GeomAbs_Shape theOrder)
+Standard_Boolean ChFi3d::IsTangentFaces(const TopoDS_Edge& theEdge,
+                                        const TopoDS_Face& theFace1,
+                                        const TopoDS_Face& theFace2,
+                                        const GeomAbs_Shape Order)
 {
-  if (theOrder == GeomAbs_G1 && BRep_Tool::Continuity(theEdge, theFace1, theFace2) != GeomAbs_C0)
+  if (Order == GeomAbs_G1 && BRep_Tool::Continuity(theEdge, theFace1, theFace2) != GeomAbs_C0)
     return Standard_True;
 
   Standard_Real TolC0 = Max(0.001, 1.5*BRep_Tool::Tolerance(theEdge));
@@ -147,46 +147,15 @@ Standard_Boolean ChFi3d::IsTangentFaces(const TopoDS_Edge&  theEdge,
   Standard_Real aFirst;
   Standard_Real aLast;
 
-  Handle(Geom2d_Curve) aC2d1, aC2d2;
-  
-  if (!theFace1.IsSame (theFace2) &&
-      BRep_Tool::IsClosed (theEdge, theFace1) &&
-      BRep_Tool::IsClosed (theEdge, theFace2))
-  {
-    //Find the edge in the face 1: this edge will have correct orientation
-    TopoDS_Edge anEdgeInFace1;
-    TopoDS_Face aFace1 = theFace1;
-    aFace1.Orientation (TopAbs_FORWARD);
-    TopExp_Explorer anExplo (aFace1, TopAbs_EDGE);
-    for (; anExplo.More(); anExplo.Next())
-    {
-      const TopoDS_Edge& anEdge = TopoDS::Edge (anExplo.Current());
-      if (anEdge.IsSame (theEdge))
-      {
-        anEdgeInFace1 = anEdge;
-        break;
-      }
-    }
-    if (anEdgeInFace1.IsNull())
-      return Standard_False;
-    
-    aC2d1 = BRep_Tool::CurveOnSurface (anEdgeInFace1, aFace1, aFirst, aLast);
-    TopoDS_Face aFace2 = theFace2;
-    aFace2.Orientation (TopAbs_FORWARD);
-    anEdgeInFace1.Reverse();
-    aC2d2 = BRep_Tool::CurveOnSurface (anEdgeInFace1, aFace2, aFirst, aLast);
-  }
-  else
-  {
-    // Obtaining of pcurves of edge on two faces.
-    aC2d1 = BRep_Tool::CurveOnSurface (theEdge, theFace1, aFirst, aLast);
-    //For the case of seam edge
-    TopoDS_Edge EE = theEdge;
-    if (theFace1.IsSame(theFace2))
-      EE.Reverse();
-    aC2d2 = BRep_Tool::CurveOnSurface (EE, theFace2, aFirst, aLast);
-  }
-  
+  // Obtaining of pcurves of edge on two faces.
+  const Handle(Geom2d_Curve) aC2d1 = BRep_Tool::CurveOnSurface
+    (theEdge, theFace1, aFirst, aLast);
+  //For the case of seam edge
+  TopoDS_Edge EE = theEdge;
+  if (theFace1.IsSame(theFace2))
+    EE.Reverse();
+  const Handle(Geom2d_Curve) aC2d2 = BRep_Tool::CurveOnSurface
+    (EE, theFace2, aFirst, aLast);
   if (aC2d1.IsNull() || aC2d2.IsNull())
     return Standard_False;
 
@@ -217,19 +186,15 @@ Standard_Boolean ChFi3d::IsTangentFaces(const TopoDS_Edge&  theEdge,
     if (i == aNbSamples) aPar = aLast;
 
     LocalAnalysis_SurfaceContinuity aCont(aC2d1, aC2d2, aPar,
-      aSurf1, aSurf2, theOrder,
+      aSurf1, aSurf2, Order,
       0.001, TolC0, 0.1, 0.1, 0.1);
     if (!aCont.IsDone())
     {
-      if (theOrder == GeomAbs_C2 &&
-          aCont.StatusError() == LocalAnalysis_NullSecondDerivative)
-        continue;
-      
       nbNotDone++;
       continue;
     }
 
-    if (theOrder == GeomAbs_G1)
+    if (Order == GeomAbs_G1)
     {
       if (!aCont.IsG1())
         return Standard_False;

src/ChFi3d/ChFi3d_Builder_C1.cxx

@@ -1997,7 +1997,6 @@ void ChFi3d_Builder::PerformIntersectionAtEnd(const Standard_Integer Index)
       if ((possible1 && possible2) || (!possible1 && !possible2) || (nbarete > 4)) {
 	while (!trouve) {
 	  nb++;
-	  if (nb>=nn) throw Standard_Failure("IntersectionAtEnd : the max number of faces reached");
 	  if (nb!=1) F3=Face[nb-2];
 	  Face[nb-1]=F3;
 	  if (CV1.Arc().IsSame(edgelibre1))

src/DNaming/DNaming_Line3DDriver.cxx

@@ -26,7 +26,6 @@
 #include <Precision.hxx>
 #include <Standard_Type.hxx>
 #include <TDataStd_Integer.hxx>
-#include <TDataStd_Name.hxx>
 #include <TDF_Label.hxx>
 #include <TFunction_Function.hxx>
 #include <TFunction_Logbook.hxx>

src/DRAWEXE/DRAWEXE.cxx

@@ -18,7 +18,6 @@
 #include <DrawTrSurf.hxx>
 #include <Message.hxx>
 #include <Message_PrinterOStream.hxx>
-#include <Message_PrinterSystemLog.hxx>
 #include <NCollection_IndexedMap.hxx>
 #include <OSD.hxx>
 #include <OSD_Thread.hxx>

src/FEmTool/FEmTool_Assembly.cxx

@@ -16,9 +16,11 @@
 
 
 #include <FEmTool_Assembly.hxx>
+#include <FEmTool_ListIteratorOfListOfVectors.hxx>
 #include <FEmTool_ListOfVectors.hxx>
 #include <FEmTool_ProfileMatrix.hxx>
 #include <math_Matrix.hxx>
+#include <Standard_DimensionError.hxx>
 #include <Standard_DomainError.hxx>
 #include <StdFail_NotDone.hxx>
 #include <TColStd_HArray1OfReal.hxx>

src/FEmTool/FEmTool_Assembly.hxx

@@ -23,6 +23,7 @@
 
 #include <TColStd_Array2OfInteger.hxx>
 #include <FEmTool_HAssemblyTable.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 #include <FEmTool_SeqOfLinConstr.hxx>
 #include <TColStd_SequenceOfReal.hxx>

src/FEmTool/FEmTool_Curve.cxx

@@ -20,8 +20,10 @@
 
 #include <FEmTool_Curve.hxx>
 #include <PLib.hxx>
+#include <PLib_Base.hxx>
 #include <PLib_HermitJacobi.hxx>
 #include <PLib_JacobiPolynomial.hxx>
+#include <Standard_DimensionError.hxx>
 #include <Standard_Type.hxx>
 
 IMPLEMENT_STANDARD_RTTIEXT(FEmTool_Curve,Standard_Transient)

src/FEmTool/FEmTool_ElementaryCriterion.cxx

@@ -17,6 +17,8 @@
 
 #include <FEmTool_ElementaryCriterion.hxx>
 #include <math_Matrix.hxx>
+#include <Standard_DomainError.hxx>
+#include <Standard_NotImplemented.hxx>
 #include <Standard_Type.hxx>
 
 IMPLEMENT_STANDARD_RTTIEXT(FEmTool_ElementaryCriterion,Standard_Transient)

src/FEmTool/FEmTool_ElementaryCriterion.hxx

@@ -18,6 +18,7 @@
 #define _FEmTool_ElementaryCriterion_HeaderFile
 
 #include <Standard.hxx>
+#include <Standard_Type.hxx>
 
 #include <TColStd_HArray2OfReal.hxx>
 #include <Standard_Real.hxx>

src/FEmTool/FEmTool_ElementsOfRefMatrix.hxx

@@ -23,6 +23,7 @@
 
 #include <Standard_Integer.hxx>
 #include <math_FunctionSet.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 class PLib_Base;
 

src/FEmTool/FEmTool_LinearFlexion.cxx

@@ -24,6 +24,7 @@
 #include <math_Vector.hxx>
 #include <PLib.hxx>
 #include <PLib_HermitJacobi.hxx>
+#include <PLib_JacobiPolynomial.hxx>
 #include <Standard_ConstructionError.hxx>
 #include <Standard_DomainError.hxx>
 #include <Standard_NotImplemented.hxx>

src/FEmTool/FEmTool_LinearFlexion.hxx

@@ -25,6 +25,7 @@
 #include <FEmTool_ElementaryCriterion.hxx>
 #include <GeomAbs_Shape.hxx>
 #include <TColStd_HArray2OfInteger.hxx>
+#include <Standard_Real.hxx>
 #include <math_Vector.hxx>
 
 

src/FEmTool/FEmTool_LinearJerk.cxx

@@ -24,6 +24,7 @@
 #include <math_Vector.hxx>
 #include <PLib.hxx>
 #include <PLib_HermitJacobi.hxx>
+#include <PLib_JacobiPolynomial.hxx>
 #include <Standard_ConstructionError.hxx>
 #include <Standard_DomainError.hxx>
 #include <Standard_NotImplemented.hxx>

src/FEmTool/FEmTool_LinearJerk.hxx

@@ -25,6 +25,7 @@
 #include <FEmTool_ElementaryCriterion.hxx>
 #include <GeomAbs_Shape.hxx>
 #include <TColStd_HArray2OfInteger.hxx>
+#include <Standard_Real.hxx>
 #include <math_Vector.hxx>
 
 

src/FEmTool/FEmTool_LinearTension.cxx

@@ -24,6 +24,7 @@
 #include <math_Vector.hxx>
 #include <PLib.hxx>
 #include <PLib_HermitJacobi.hxx>
+#include <PLib_JacobiPolynomial.hxx>
 #include <Standard_ConstructionError.hxx>
 #include <Standard_DomainError.hxx>
 #include <Standard_NotImplemented.hxx>

src/FEmTool/FEmTool_LinearTension.hxx

@@ -25,6 +25,7 @@
 #include <FEmTool_ElementaryCriterion.hxx>
 #include <GeomAbs_Shape.hxx>
 #include <TColStd_HArray2OfInteger.hxx>
+#include <Standard_Real.hxx>
 #include <math_Vector.hxx>
 
 

src/FEmTool/FEmTool_ProfileMatrix.hxx

@@ -18,10 +18,12 @@
 #define _FEmTool_ProfileMatrix_HeaderFile
 
 #include <Standard.hxx>
+#include <Standard_Type.hxx>
 
 #include <TColStd_Array2OfInteger.hxx>
 #include <TColStd_HArray1OfReal.hxx>
 #include <TColStd_HArray1OfInteger.hxx>
+#include <Standard_Boolean.hxx>
 #include <FEmTool_SparseMatrix.hxx>
 #include <TColStd_Array1OfInteger.hxx>
 #include <Standard_Real.hxx>

src/FEmTool/FEmTool_SparseMatrix.cxx

@@ -17,5 +17,6 @@
 
 #include <FEmTool_SparseMatrix.hxx>
 #include <Standard_Type.hxx>
+#include <StdFail_NotDone.hxx>
 
 IMPLEMENT_STANDARD_RTTIEXT(FEmTool_SparseMatrix,Standard_Transient)

src/FEmTool/FEmTool_SparseMatrix.hxx

@@ -18,10 +18,12 @@
 #define _FEmTool_SparseMatrix_HeaderFile
 
 #include <Standard.hxx>
+#include <Standard_Type.hxx>
 
 #include <Standard_Transient.hxx>
 #include <Standard_Real.hxx>
 #include <Standard_Integer.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 
 

src/FSD/FSD_BinaryFile.hxx

@@ -23,6 +23,7 @@
 #include <Storage_Error.hxx>
 #include <Storage_OpenMode.hxx>
 #include <Storage_Data.hxx>
+#include <Standard_Boolean.hxx>
 #include <Storage_Position.hxx>
 #include <Standard_Integer.hxx>
 #include <TColStd_SequenceOfAsciiString.hxx>

src/FSD/FSD_FStream.hxx

@@ -15,6 +15,7 @@
 #ifndef _FSD_FStream_HeaderFile
 #define _FSD_FStream_HeaderFile
 
+#include <stdio.h>
 #include <Standard_Stream.hxx>
 
 typedef std::fstream FSD_FStream;

src/FairCurve/FairCurve_Batten.cxx

@@ -22,6 +22,7 @@
 
 #include <BSplCLib.hxx>
 #include <FairCurve_Batten.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_EnergyOfBatten.hxx>
 #include <FairCurve_Newton.hxx>
 #include <Geom2d_BSplineCurve.hxx>

src/FairCurve/FairCurve_Batten.hxx

@@ -23,6 +23,8 @@
 
 #include <FairCurve_AnalysisCode.hxx>
 #include <gp_Pnt2d.hxx>
+#include <Standard_Real.hxx>
+#include <Standard_Boolean.hxx>
 #include <Standard_Integer.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
 #include <TColStd_HArray1OfReal.hxx>

src/FairCurve/FairCurve_DistributionOfJerk.cxx

@@ -23,6 +23,7 @@
 
 
 #include <BSplCLib.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfJerk.hxx>
 #include <gp_Pnt2d.hxx>
 #include <gp_XY.hxx>

src/FairCurve/FairCurve_DistributionOfJerk.hxx

@@ -26,6 +26,7 @@
 #include <Standard_Integer.hxx>
 #include <TColStd_HArray1OfReal.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 
 

src/FairCurve/FairCurve_DistributionOfSagging.cxx

@@ -20,6 +20,7 @@
 
 
 #include <BSplCLib.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfSagging.hxx>
 #include <gp_Pnt2d.hxx>
 #include <gp_XY.hxx>

src/FairCurve/FairCurve_DistributionOfSagging.hxx

@@ -26,6 +26,7 @@
 #include <Standard_Integer.hxx>
 #include <TColStd_HArray1OfReal.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 
 

src/FairCurve/FairCurve_DistributionOfTension.cxx

@@ -20,6 +20,7 @@
 
 
 #include <BSplCLib.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfTension.hxx>
 #include <gp_Pnt2d.hxx>
 #include <gp_XY.hxx>

src/FairCurve/FairCurve_DistributionOfTension.hxx

@@ -21,11 +21,13 @@
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
+#include <Standard_Real.hxx>
 #include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfEnergy.hxx>
 #include <Standard_Integer.hxx>
 #include <TColStd_HArray1OfReal.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 
 

src/FairCurve/FairCurve_Energy.hxx

@@ -23,7 +23,9 @@
 
 #include <TColgp_HArray1OfPnt2d.hxx>
 #include <Standard_Integer.hxx>
+#include <Standard_Boolean.hxx>
 #include <TColgp_Array1OfXY.hxx>
+#include <math_Vector.hxx>
 #include <math_MultipleVarFunctionWithHessian.hxx>
 #include <Standard_Real.hxx>
 class math_Matrix;

src/FairCurve/FairCurve_EnergyOfBatten.cxx

@@ -20,6 +20,7 @@
 #endif
 
 
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_EnergyOfBatten.hxx>
 #include <math_GaussSetIntegration.hxx>
 #include <math_IntegerVector.hxx>

src/FairCurve/FairCurve_EnergyOfBatten.hxx

@@ -22,6 +22,7 @@
 #include <Standard_Handle.hxx>
 
 #include <Standard_Real.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfTension.hxx>
 #include <FairCurve_DistributionOfSagging.hxx>
 #include <FairCurve_AnalysisCode.hxx>

src/FairCurve/FairCurve_EnergyOfMVC.hxx

@@ -21,6 +21,7 @@
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
+#include <Standard_Real.hxx>
 #include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_DistributionOfTension.hxx>
 #include <FairCurve_DistributionOfSagging.hxx>
@@ -30,6 +31,7 @@
 #include <Standard_Integer.hxx>
 #include <TColStd_HArray1OfReal.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
+#include <Standard_Boolean.hxx>
 #include <math_Vector.hxx>
 
 // resolve name collisions with X11 headers

src/FairCurve/FairCurve_MinimalVariation.cxx

@@ -21,6 +21,7 @@
 
 
 #include <BSplCLib.hxx>
+#include <FairCurve_BattenLaw.hxx>
 #include <FairCurve_EnergyOfMVC.hxx>
 #include <FairCurve_MinimalVariation.hxx>
 #include <FairCurve_Newton.hxx>
@@ -29,6 +30,9 @@
 #include <gp_Vec2d.hxx>
 #include <math_Matrix.hxx>
 #include <PLib.hxx>
+#include <Precision.hxx>
+#include <Standard_DomainError.hxx>
+#include <Standard_NegativeValue.hxx>
 #include <Standard_NullValue.hxx>
 #include <TColgp_HArray1OfPnt2d.hxx>
 #include <TColStd_HArray1OfInteger.hxx>

src/FairCurve/FairCurve_MinimalVariation.hxx

@@ -19,9 +19,13 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
+#include <Standard_Real.hxx>
 #include <FairCurve_Batten.hxx>
+#include <Standard_Boolean.hxx>
 #include <FairCurve_AnalysisCode.hxx>
+#include <Standard_Integer.hxx>
 #include <Standard_OStream.hxx>
 class gp_Pnt2d;
 class gp_Vec2d;

src/FairCurve/FairCurve_Newton.hxx

@@ -21,7 +21,10 @@
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
+#include <Standard_Real.hxx>
 #include <math_NewtonMinimum.hxx>
+#include <Standard_Integer.hxx>
+#include <Standard_Boolean.hxx>
 class math_MultipleVarFunctionWithHessian;
 
 

src/FilletSurf/FilletSurf_Builder.cxx

@@ -14,6 +14,7 @@
 
 // Modified:     Portage NT 7-5-97 DPF (return)
 
+#include <ChFi3d_FilletShape.hxx>
 #include <FilletSurf_Builder.hxx>
 #include <FilletSurf_ErrorTypeStatus.hxx>
 #include <FilletSurf_InternalBuilder.hxx>

src/FilletSurf/FilletSurf_InternalBuilder.cxx

@@ -16,6 +16,7 @@
 
 #include <Adaptor3d_TopolTool.hxx>
 #include <BRep_Tool.hxx>
+#include <BRepAdaptor_Curve.hxx>
 #include <BRepAdaptor_Curve2d.hxx>
 #include <BRepAdaptor_Surface.hxx>
 #include <BRepBlend_ConstRad.hxx>
@@ -30,12 +31,16 @@
 #include <ChFiDS_FilSpine.hxx>
 #include <ChFiDS_HData.hxx>
 #include <ChFiDS_ElSpine.hxx>
+#include <ChFiDS_ListIteratorOfListOfStripe.hxx>
+#include <ChFiDS_ListOfStripe.hxx>
 #include <ChFiDS_SecHArray1.hxx>
 #include <ChFiDS_SequenceOfSurfData.hxx>
 #include <ChFiDS_Spine.hxx>
 #include <ChFiDS_Stripe.hxx>
 #include <ChFiDS_SurfData.hxx>
 #include <ElSLib.hxx>
+#include <FilletSurf_ErrorTypeStatus.hxx>
+#include <FilletSurf_StatusDone.hxx>
 #include <FilletSurf_StatusType.hxx>
 #include <Geom2d_Curve.hxx>
 #include <Geom_Circle.hxx>
@@ -44,19 +49,22 @@
 #include <Geom_Surface.hxx>
 #include <Geom_TrimmedCurve.hxx>
 #include <GeomAbs_Shape.hxx>
+#include <GeomAdaptor_Curve.hxx>
 #include <GeomAdaptor_Surface.hxx>
 #include <gp_Circ.hxx>
 #include <gp_Pln.hxx>
 #include <IntCurveSurface_HInter.hxx>
 #include <IntCurveSurface_IntersectionPoint.hxx>
+#include <Precision.hxx>
 #include <Standard_ConstructionError.hxx>
 #include <TopoDS.hxx>
 #include <TopoDS_Face.hxx>
 #include <TopoDS_Shape.hxx>
 #include <TopOpeBRepDS_HDataStructure.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
 
 static Standard_Boolean isinlist(const TopoDS_Shape&         E,
-                                 const TopTools_ListOfShape& L){
+				 const TopTools_ListOfShape& L){
   TopTools_ListIteratorOfListOfShape It;
   for (It.Initialize(L); It.More(); It.Next()){
     if(E.IsSame(It.Value())) return 1;

src/FilletSurf/FilletSurf_InternalBuilder.hxx

@@ -18,6 +18,8 @@
 #define _FilletSurf_InternalBuilder_HeaderFile
 
 #include <BRepAdaptor_Curve2d.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <ChFiDS_ElSpine.hxx>
 #include <ChFi3d_FilBuilder.hxx>
 #include <ChFi3d_FilletShape.hxx>
 #include <TopTools_ListOfShape.hxx>

src/Font/Font_FontMgr.cxx

@@ -21,6 +21,7 @@
 #include <Message.hxx>
 #include <Message_Messenger.hxx>
 #include <NCollection_Buffer.hxx>
+#include <NCollection_List.hxx>
 #include <NCollection_Map.hxx>
 #include <OSD_Environment.hxx>
 #include <Standard_Stream.hxx>

src/Font/Font_FontMgr.hxx

@@ -18,6 +18,8 @@
 
 #include <Standard.hxx>
 #include <Standard_Transient.hxx>
+#include <Standard_Type.hxx>
+#include <Font_FontAspect.hxx>
 #include <Font_NListOfSystemFont.hxx>
 #include <Font_StrictLevel.hxx>
 #include <Font_UnicodeSubset.hxx>

src/Font/Font_SystemFont.hxx

@@ -18,6 +18,7 @@
 
 #include <Font_FontAspect.hxx>
 #include <Standard.hxx>
+#include <Standard_Type.hxx>
 #include <Standard_Transient.hxx>
 #include <TCollection_AsciiString.hxx>
 

src/GC/GC_MakeConicalSurface.cxx

@@ -19,6 +19,7 @@
 #include <gce_MakeCone.hxx>
 #include <Geom_ConicalSurface.hxx>
 #include <gp.hxx>
+#include <gp_Ax1.hxx>
 #include <gp_Ax2.hxx>
 #include <gp_Cone.hxx>
 #include <gp_Lin.hxx>

src/GC/GC_MakeMirror.cxx

@@ -17,7 +17,11 @@
 
 #include <GC_MakeMirror.hxx>
 #include <Geom_Transformation.hxx>
+#include <gp_Ax1.hxx>
+#include <gp_Ax2.hxx>
+#include <gp_Ax3.hxx>
 #include <gp_Dir.hxx>
+#include <gp_Lin.hxx>
 #include <gp_Pln.hxx>
 #include <gp_Pnt.hxx>
 #include <StdFail_NotDone.hxx>

src/GC/GC_MakePlane.cxx

@@ -20,6 +20,8 @@
 #include <Geom_Plane.hxx>
 #include <gp.hxx>
 #include <gp_Ax1.hxx>
+#include <gp_Ax2.hxx>
+#include <gp_Ax3.hxx>
 #include <gp_Dir.hxx>
 #include <gp_Pln.hxx>
 #include <gp_Pnt.hxx>

src/GC/GC_MakeRotation.cxx

@@ -17,6 +17,7 @@
 
 #include <GC_MakeRotation.hxx>
 #include <Geom_Transformation.hxx>
+#include <gp_Ax1.hxx>
 #include <gp_Dir.hxx>
 #include <gp_Lin.hxx>
 #include <gp_Pnt.hxx>

src/GC/GC_MakeTrimmedCylinder.cxx

@@ -21,6 +21,7 @@
 #include <Geom_RectangularTrimmedSurface.hxx>
 #include <gp_Ax1.hxx>
 #include <gp_Circ.hxx>
+#include <gp_Cylinder.hxx>
 #include <gp_Pnt.hxx>
 #include <Standard_NotImplemented.hxx>
 #include <StdFail_NotDone.hxx>

src/GC/GC_Root.hxx

@@ -19,8 +19,10 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
 #include <gce_ErrorType.hxx>
+#include <Standard_Boolean.hxx>
 
 // resolve name collisions with X11 headers
 #ifdef Status

src/GCE2d/GCE2d_Root.hxx

@@ -19,8 +19,10 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
 #include <gce_ErrorType.hxx>
+#include <Standard_Boolean.hxx>
 
 // resolve name collisions with X11 headers
 #ifdef Status

src/GCPnts/GCPnts_DistFunction.hxx

@@ -14,6 +14,7 @@
 #ifndef _GCPnts_DistFunction_HeaderFile
 #define _GCPnts_DistFunction_HeaderFile
 
+#include <gp_Lin.hxx>
 #include <math_Function.hxx>
 #include <math_MultipleVarFunction.hxx>
 #include <Adaptor3d_Curve.hxx>

src/GCPnts/GCPnts_DistFunction2d.hxx

@@ -14,6 +14,7 @@
 #ifndef _GCPnts_DistFunction2d_HeaderFile
 #define _GCPnts_DistFunction2d_HeaderFile
 
+#include <gp_Lin2d.hxx>
 #include <math_Function.hxx>
 #include <math_MultipleVarFunction.hxx>
 #include <Adaptor2d_Curve2d.hxx>

src/GCPnts/GCPnts_QuasiUniformAbscissa.cxx

@@ -16,9 +16,11 @@
 
 #include <GCPnts_TCurveTypes.hxx>
 #include <GCPnts_UniformAbscissa.hxx>
+#include <gp_Pnt.hxx>
 #include <gp_Pnt2d.hxx>
 #include <Standard_ConstructionError.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
+#include <TColgp_Array1OfPnt.hxx>
 
 //=======================================================================
 //function : GCPnts_QuasiUniformAbscissa

src/GCPnts/GCPnts_TangentialDeflection.cxx

@@ -23,10 +23,13 @@
 #include <gp_Vec.hxx>
 #include <gp_Vec2d.hxx>
 #include <gp_XYZ.hxx>
+#include <gp_Circ.hxx>
+#include <gp_Circ2d.hxx>
 #include <math_BrentMinimum.hxx>
 #include <math_PSO.hxx>
 #include <Precision.hxx>
 #include <Standard_ConstructionError.hxx>
+#include <Standard_OutOfRange.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 namespace

src/GCPnts/GCPnts_TangentialDeflection.hxx

@@ -20,6 +20,7 @@
 #include <TColgp_SequenceOfPnt.hxx>
 #include <TColStd_SequenceOfReal.hxx>
 #include <gp_Pnt.hxx>
+#include <gp_Lin.hxx>
 #include <math_Function.hxx>
 #include <math_MultipleVarFunction.hxx>
 #include <Adaptor3d_Curve.hxx>

src/GCPnts/GCPnts_UniformDeflection.cxx

@@ -19,7 +19,10 @@
 #include <GCPnts_TCurveTypes.hxx>
 #include <gp_Pnt.hxx>
 #include <gp_Pnt2d.hxx>
+#include <Standard_ConstructionError.hxx>
+#include <Standard_DomainError.hxx>
 #include <Standard_NotImplemented.hxx>
+#include <Standard_OutOfRange.hxx>
 #include <StdFail_NotDone.hxx>
 
 // mask the return of a Adaptor2d_Curve2d as a gp_Pnt 

src/GccAna/GccAna_Circ2d2TanOn.cxx

@@ -18,6 +18,8 @@
 #include <GccAna_Circ2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>

src/GccAna/GccAna_Circ2d2TanOn.hxx

@@ -19,13 +19,16 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
+#include <Standard_Boolean.hxx>
 #include <Standard_Integer.hxx>
 #include <TColgp_Array1OfCirc2d.hxx>
 #include <GccEnt_Array1OfPosition.hxx>
 #include <TColStd_Array1OfInteger.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
 #include <TColStd_Array1OfReal.hxx>
+#include <Standard_Real.hxx>
 #include <GccEnt_Position.hxx>
 class GccEnt_QualifiedCirc;
 class gp_Lin2d;

src/GccAna/GccAna_Circ2d2TanOn_1.cxx

@@ -31,6 +31,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle tangent to Circle C1 and a straight line L2.    +

src/GccAna/GccAna_Circ2d2TanOn_10.cxx

@@ -19,7 +19,9 @@
 #include <GccAna_Circ2d2TanOn.hxx>
 #include <GccAna_LinPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_Bisec.hxx>
 #include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>
@@ -30,6 +32,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle tangent to straight line L1 and a point Point2.   +

src/GccAna/GccAna_Circ2d2TanOn_11.cxx

@@ -24,7 +24,10 @@
 
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d2TanOn.hxx>
+#include <GccAna_Lin2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -32,6 +35,8 @@
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle passing by  : 2 points Point1 and Point2.        +

src/GccAna/GccAna_Circ2d2TanOn_2.cxx

@@ -19,7 +19,9 @@
 #include <GccAna_Circ2d2TanOn.hxx>
 #include <GccAna_Lin2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <gp.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -27,6 +29,8 @@
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 GccAna_Circ2d2TanOn::
    GccAna_Circ2d2TanOn (const GccEnt_QualifiedLin&  Qualified1 , 

src/GccAna/GccAna_Circ2d2TanOn_3.cxx

@@ -20,7 +20,10 @@
 #include <GccAna_CircPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_Bisec.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
@@ -30,6 +33,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=========================================================================

src/GccAna/GccAna_Circ2d2TanOn_4.cxx

@@ -19,8 +19,11 @@
 #include <GccAna_Circ2d2TanOn.hxx>
 #include <GccAna_LinPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_Bisec.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
@@ -31,6 +34,8 @@
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle Tangent to : 1 straight line L1.                +

src/GccAna/GccAna_Circ2d2TanOn_5.cxx

@@ -18,6 +18,8 @@
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d2TanOn.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -25,6 +27,8 @@
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle passing by : 2 points Point1 and Point2.        +

src/GccAna/GccAna_Circ2d2TanOn_6.cxx

@@ -20,15 +20,20 @@
 #include <GccAna_Circ2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
+#include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=========================================================================

src/GccAna/GccAna_Circ2d2TanOn_7.cxx

@@ -31,6 +31,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 GccAna_Circ2d2TanOn::

src/GccAna/GccAna_Circ2d2TanOn_8.cxx

@@ -27,16 +27,23 @@
 #include <GccAna_CircPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_Bisec.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
+#include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
+#include <Standard_ConstructionError.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 GccAna_Circ2d2TanOn::

src/GccAna/GccAna_Circ2d2TanOn_9.cxx

@@ -19,6 +19,7 @@
 #include <GccAna_Circ2d2TanOn.hxx>
 #include <GccAna_Lin2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
 #include <gp.hxx>
 #include <gp_Ax2d.hxx>
@@ -28,6 +29,8 @@
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 GccAna_Circ2d2TanOn::
    GccAna_Circ2d2TanOn (const GccEnt_QualifiedLin&  Qualified1 ,

src/GccAna/GccAna_Circ2d2TanRad.cxx

@@ -17,8 +17,10 @@
 #include <GccAna_Circ2d2TanRad.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
+#include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>

src/GccAna/GccAna_Circ2d2TanRad.hxx

@@ -19,13 +19,16 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
+#include <Standard_Boolean.hxx>
 #include <GccEnt_Array1OfPosition.hxx>
 #include <TColStd_Array1OfInteger.hxx>
 #include <Standard_Integer.hxx>
 #include <TColgp_Array1OfCirc2d.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
 #include <TColStd_Array1OfReal.hxx>
+#include <Standard_Real.hxx>
 #include <GccEnt_Position.hxx>
 class GccEnt_QualifiedCirc;
 class GccEnt_QualifiedLin;

src/GccAna/GccAna_Circ2d2TanRad_1.cxx

@@ -27,6 +27,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Standard_NegativeValue.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 // circular tangent to a circle, a line and a given radius

src/GccAna/GccAna_Circ2d2TanRad_2.cxx

@@ -19,6 +19,7 @@
 #include <GccAna_Circ2d2TanRad.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
 #include <gp_Lin2d.hxx>
@@ -26,6 +27,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Standard_NegativeValue.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 // circulare tangent to a circle a point and a given radius
 //=============================================================

src/GccAna/GccAna_Circ2d2TanRad_3.cxx

@@ -20,6 +20,7 @@
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d2TanRad.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
@@ -28,6 +29,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Standard_NegativeValue.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 // circular tangent to a line and a point and a given radius

src/GccAna/GccAna_Circ2d2TanRad_4.cxx

@@ -18,7 +18,9 @@
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d2TanRad.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <gp.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Lin2d.hxx>
@@ -27,6 +29,8 @@
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
 #include <Standard_NegativeValue.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 // circular tangent to two lines of given radius

src/GccAna/GccAna_Circ2d2TanRad_5.cxx

@@ -18,12 +18,17 @@
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d2TanRad.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Ax2d.hxx>
 #include <gp_Circ2d.hxx>
+#include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Standard_NegativeValue.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //   Circle passing by two points of given radius.
 //   ==============================================

src/GccAna/GccAna_Circ2d3Tan.cxx

@@ -15,12 +15,22 @@
 
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d3Tan.hxx>
+#include <GccAna_Circ2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
+#include <GccInt_BElips.hxx>
+#include <GccInt_BHyper.hxx>
+#include <GccInt_BLine.hxx>
+#include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
 #include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
+#include <IntAna2d_AnaIntersection.hxx>
+#include <IntAna2d_Conic.hxx>
+#include <IntAna2d_IntPoint.hxx>
 #include <math_DirectPolynomialRoots.hxx>
 #include <Standard_OutOfRange.hxx>
 #include <StdFail_NotDone.hxx>

src/GccAna/GccAna_Circ2d3Tan.hxx

@@ -19,13 +19,16 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
+#include <Standard_Boolean.hxx>
 #include <Standard_Integer.hxx>
 #include <TColgp_Array1OfCirc2d.hxx>
 #include <GccEnt_Array1OfPosition.hxx>
 #include <TColStd_Array1OfInteger.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
 #include <TColStd_Array1OfReal.hxx>
+#include <Standard_Real.hxx>
 #include <GccEnt_Position.hxx>
 class GccEnt_QualifiedCirc;
 class GccEnt_QualifiedLin;

src/GccAna/GccAna_Circ2d3Tan_1.cxx

@@ -19,6 +19,7 @@
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_BParab.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
@@ -29,6 +30,8 @@
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=========================================================================

src/GccAna/GccAna_Circ2d3Tan_2.cxx

@@ -20,6 +20,7 @@
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_BParab.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
@@ -29,6 +30,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=========================================================================

src/GccAna/GccAna_Circ2d3Tan_3.cxx

@@ -17,6 +17,7 @@
 #include <GccAna_Circ2d3Tan.hxx>
 #include <GccAna_Lin2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -24,6 +25,8 @@
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=========================================================================

src/GccAna/GccAna_Circ2d3Tan_4.cxx

@@ -20,7 +20,11 @@
 #include <GccAna_CircPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_BElips.hxx>
+#include <GccInt_BHyper.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -29,6 +33,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 static Standard_Integer MaxSol = 20;

src/GccAna/GccAna_Circ2d3Tan_5.cxx

@@ -21,6 +21,7 @@
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_BParab.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
@@ -30,6 +31,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //===========================================================================

src/GccAna/GccAna_Circ2d3Tan_6.cxx

@@ -18,7 +18,9 @@
 #include <GccAna_Lin2dBisec.hxx>
 #include <GccAna_LinPnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_BParab.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
@@ -28,6 +30,8 @@
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle tangent to two straight lines and a point.      +

src/GccAna/GccAna_Circ2d3Tan_7.cxx

@@ -19,7 +19,11 @@
 #include <GccAna_Pnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
 #include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
+#include <GccInt_BCirc.hxx>
 #include <GccInt_BElips.hxx>
+#include <GccInt_BHyper.hxx>
+#include <GccInt_BLine.hxx>
 #include <GccInt_IType.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
@@ -29,6 +33,8 @@
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 #include <TColStd_Array1OfReal.hxx>
 
 //=======================================================================

src/GccAna/GccAna_Circ2d3Tan_8.cxx

@@ -15,9 +15,11 @@
 
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d3Tan.hxx>
+#include <GccAna_Lin2dBisec.hxx>
 #include <GccAna_LinPnt2dBisec.hxx>
 #include <GccAna_Pnt2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
 #include <GccEnt_QualifiedLin.hxx>
 #include <GccInt_Bisec.hxx>
 #include <GccInt_IType.hxx>
@@ -29,6 +31,8 @@
 #include <IntAna2d_Conic.hxx>
 #include <IntAna2d_IntPoint.hxx>
 #include <Precision.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle tangent to a straight line and two points.      +

src/GccAna/GccAna_Circ2d3Tan_9.cxx

@@ -15,13 +15,18 @@
 
 #include <ElCLib.hxx>
 #include <GccAna_Circ2d3Tan.hxx>
+#include <GccAna_Lin2dBisec.hxx>
 #include <GccEnt_BadQualifier.hxx>
+#include <GccEnt_QualifiedCirc.hxx>
+#include <GccEnt_QualifiedLin.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
 #include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <IntAna2d_IntPoint.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
 
 //=========================================================================
 //   Creation of a circle passing by three points.                       +

src/GccAna/GccAna_Circ2dBisec.cxx

@@ -25,11 +25,16 @@
 #include <GccInt_BHyper.hxx>
 #include <GccInt_Bisec.hxx>
 #include <GccInt_BLine.hxx>
+#include <GccInt_BParab.hxx>
+#include <gp.hxx>
 #include <gp_Circ2d.hxx>
 #include <gp_Dir2d.hxx>
 #include <gp_Hypr2d.hxx>
+#include <gp_Vec2d.hxx>
+#include <gp_XY.hxx>
 #include <IntAna2d_AnaIntersection.hxx>
 #include <Precision.hxx>
+#include <Standard_ConstructionError.hxx>
 #include <Standard_OutOfRange.hxx>
 #include <StdFail_NotDone.hxx>
 

src/GccAna/GccAna_Circ2dTanCen.cxx

@@ -25,6 +25,7 @@
 #include <gp_Dir2d.hxx>
 #include <gp_Lin2d.hxx>
 #include <gp_Pnt2d.hxx>
+#include <Standard_NegativeValue.hxx>
 #include <Standard_OutOfRange.hxx>
 #include <StdFail_NotDone.hxx>
 

src/GccAna/GccAna_Circ2dTanCen.hxx

@@ -19,13 +19,16 @@
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
 
+#include <Standard_Boolean.hxx>
 #include <Standard_Integer.hxx>
 #include <TColgp_Array1OfCirc2d.hxx>
 #include <GccEnt_Array1OfPosition.hxx>
 #include <TColStd_Array1OfInteger.hxx>
 #include <TColgp_Array1OfPnt2d.hxx>
 #include <TColStd_Array1OfReal.hxx>
+#include <Standard_Real.hxx>
 #include <GccEnt_Position.hxx>
 class GccEnt_QualifiedCirc;
 class gp_Pnt2d;