4df229f2c4
Bug fixes: - Bnd_Box::Add(Bnd_Box) - fix unconditional bounds merge before open direction check - Bnd_Box::IsOut(gp_Pln) - use GetXMin()/GetXMax() accessors (include Gap) instead of raw fields - Bnd_Box::Distance() - add void box check to avoid invalid results - Bnd_Range::Common() - add missing return statement - Bnd_Sphere::SquareDistances() - fix radius comparison (was comparing distance vs radius instead of squared values) - Bnd_OBB: OBBTool::ProcessTriangle - add safety check for degenerate cross products before normalization - Bnd_OBB: OBBTool::ProcessDiTetrahedron - fix off-by-one in bounds check (use < instead of <=) Performance optimizations: - Bnd_Box::IsOut(Bnd_Box) - add early return fast path for non-open boxes - Bnd_Box2d::IsOut(Bnd_Box2d) - add early return fast path for non-open boxes API improvements: - Add Contains()/Intersects() semantic wrappers (inverse of IsOut) to Bnd_Box, Bnd_Box2d, Bnd_OBB, Bnd_Range - Add Center() returning std::optional to Bnd_Box, Bnd_Box2d, Bnd_Range - Add Min()/Max()/Get() returning std::optional to Bnd_Range - Add Bnd_Range::Bounds struct for C++17 structured bindings via Get() - Add Bnd_OBB::HalfSizes struct and GetHalfSizes() for structured bindings - Add Bnd_Box2d::Distance() method - Replace Bnd_Range::IsIntersected magic int returns with IntersectStatus enum Code modernization: - Add [[nodiscard]] and noexcept annotations across all Bnd classes - Migrate Bnd_Sphere inline methods from .lxx to header, delete Bnd_Sphere.lxx - Remove unused includes (iomanip, fstream, legacy Standard_*.hxx headers) - Fix Bnd_Box.hxx "Ymix" typo in IsOpenYmin() comment - Clean up DET-style comments in Bnd_Box.cxx - Update IntPatch_WLineTool.cxx to use IntersectStatus enum
Open CASCADE Technology
Open CASCADE Technology (OCCT) is 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 is ideal for developing 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 License version 2.1 as published by the Free Software Foundation, with a special exception defined in the file OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in the OCCT distribution for the complete text of the license.
Alternatively, Open CASCADE Technology may be used under the terms of the Open CASCADE commercial license or a contractual agreement.
Note: 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 a formal disclaimer.
Packaging
You can receive certified versions 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 the 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:
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 the documentation accompanying your version for details.
Documentation
Documentation is available at the following links:
Documentation can be part of the package. To preview documentation as part of the package, open the 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 the environment variable PATH). Use the batch file
adm/gendoc.baton Windows or the Bash scriptadm/gendocon Linux or OS X to (re)generate documentation. - Generate together with sources: You need to have CMake and 1.8.4 (or above) installed on your system. Enable
BUILD_DOC_OverviewCMake parameter and set the path to Doxygen3RDPARTY_DOXYGEN_EXECUTABLE. Then build ALL or onlyOverview. - Read documentation in source plain text (Markdown) format found in the subfolder
doxor GitHub Wiki.
See dox/build/build_documentation/building_documentation.md or Building Documentation 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/build/build_occt/building_occt.md or Building OCCT or Building OCCT Wiki for instructions on building OCCT from sources on supported platforms.
Version
The current version of OCCT can be found in the file adm/cmake/version.cmake.
Development
Bug Tracker
For information regarding OCCT code development, please consult the official OCCT Collaborative Development Portal: