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1. Unify the faces classification procedure of the methods BOPAlgo_BuilderSolid::PerformInternalShapes() and BOPAlgo_Builder::FillIn3DParts() using the latter as a base. The new method BOPAlgo_Tools::ClassifyFaces() has been created for that. Both methods mentioned above have been updated to use the new one. 2. Forced intersection of the edges after enlarge of the tolerance values of their vertices during the operation has been added into BOP's intersection algorithm (BOPAlgo_PaveFiller). BOPAlgo_Tools::PerformCommonBlocks() method has been updated to avoid loosing faces of the already created Common blocks. As a result the case "boolean gdml_private ZF6" became more stable, because the intermediate result is no longer invalid. Additional test cases have been added to verify this improvement (bugs modalg_7 bug29322_*) 3. When building PCurves for edges on faces, check the existing PCurves on its validity for periodic surfaces and adjust PCurves if necessary. The improvement helps to produce the valid result in the test case "bugs moddata_1 bug152". 4. Avoid creation of empty Edge-Edge interference if the intersection point is lying close to a shared vertex. The improvement helps obtain the valid result of the "bopcheck" operation in the test case "bugs modalg_7 bug27683". Adjustment of the test case to current behavior: - Avoid usage of the self-intersecting torus in the test case "boolean gdml_public A9". - Fix the input shape in the test case "boolean bopfuse_complex H1" to provide valid result. - Test cases "bugs moddata_1 bug152_1 bug152_2" have been unified into single test case "bugs moddata_1 bug152". Now, the case rebuilds invalid input data and performs all types of Boolean operations. - Change the test case "bugs modalg_7 bug22750" to produce valid intermediate results used in subsequent operations as arguments. - The following test cases are improvements: - "boolean volumemaker D8" - "boolean volumemaker G1" - "bugs modalg_7 bug27683"
Open CASCADE Technology ======================= This directory contains sources of Open CASCADE Technology (OCCT), a software development platform providing services for 3D surface and solid modeling, CAD data exchange, and visualization. Most of OCCT functionality is available in the form of C++ libraries. OCCT can be best applied in development of software dealing with 3D modeling (CAD), manufacturing / measuring (CAM) or numerical simulation (CAE). License ------- Open CASCADE Technology is free software; you can redistribute it and / or modify it under the terms of the GNU Lesser General Public 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. Alternatively, Open CASCADE Technology may be used under the terms of Open CASCADE commercial license or contractual agreement. Note that Open CASCADE Technology is provided on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND. The entire risk related to any use of the OCCT code and materials is on you. See the license text for formal disclaimer. Packaging --------- You can receive certified version of OCCT code in different packages. - Snapshot of Git repository: contains C++ header and source files of OCCT, documentation sources, build scripts, and CMake project files. - Complete source archive: contains all sources of OCCT, generated HTML and PDF documentation, and ready-to-use projects for building on all officially supported platforms. - Binary package (platform-specific): in addition to complete source archive, it includes binaries of OCCT and third-party libraries built on one platform. This package allows using OCCT immediately after installation. Certified versions of OCCT can be downloaded from http://www.opencascade.com You can also find OCCT pre-installed on your system, or install it from packages provided by a third party. Note that packaging and functionality of such versions can be different from certified releases. Please consult documentation accompanying your version for details. Documentation ------------- Open file doc/html/index.html to browse HTML documentation. If HTML documentation is not available in your package, you can: - Generate it from sources. You need to have Tcl and Doxygen 1.8.4 (or above) installed on your system. and accessible in your environment (check environment variable PATH). Use batch file *gendoc.bat* on Windows or Bash script *gendoc* on Linux or OS X to (re)generate documentation. - Read documentation in source plain text (MarkDown) format found in subfolder *dox* See *dox/dev_guides/documentation/documentation.md* for details. Building -------- In most cases you need to rebuild OCCT on your platform (OS, compiler) before using it in your project, to ensure binary compatibility. Consult the file *dox/dev_guides/building/building.md* for instructions on building OCCT from sources on supported platforms. Version ------- The current version of OCCT can be consulted in the file *src/Standard/Standard_Version.hxx* Development ----------- For information regarding OCCT code development please consult the official OCCT Collaborative Development Portal: http://dev.opencascade.org