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0026796: The result of General Fuse operation is self-intersecting shape The fix forces creation of new sub-shapes (vertex, edge) when the tolerance of some sub-shape of an argument is to be increased. This new behavior is turned off by default. It can be turned on using two ways: 1) Setting 'locking' flag of the arguments. 2) Calling the method SetNonDestructive(Standard_True) of the API classes. Various bug fixes in the algorithm: - Compute correct tolerance values for intersections of type Line/Line, Line/Plane, Plane/Plane. - In case of Line/Plane intersection check if line's vertices lie on the plane. - Do not allow decreasing of the tolerance value of the Line/Line intersection vertex. - In IntTools_EdgeEdge, call the method FindParameters with proper 3D tolerance of the curve. - Force making copy of a degenerated edge if its vertex is touched but no 2D intersection with other curves is found. - Remove pave blocks both ends of which became referring to the same vertex after vertices substitution. - Avoid exception in IntTools_Context::IsVertexOnLine if Extrema is not done. - Reduce tolerance of vertex/edge using actual distances to interfered shapes if it was increased due to line/line, line/plane, or plane/plane small intersection angle. - Update tolerance of edges to reach all representations in a common block. - In V-E intersections, check if a vertex hits beyond shrunk range, in such case create V-V interference. - Do not put a section edge to the result if it becomes to be a micro edge after updating its vertex. - Correctly make vertices same-domain during the work of MakeBlocks. - Decrease shrunk range at least on a Precision::Confusion() in addition to vertex tolerance. - Add Confusion to bounding boxes of new shapes in DS - Add tolerance Precision::Confusion() to compare distances of touching cases to fix regressions. TODO marks have been removed from (or modified in) the following test cases (Improvements): boolean bsection M3 N2 R2 boolean gdml_private B6 C2 C6 G7 I6 F6 J1 J4 M7 N1 N8 N9 O3 O4 O6 O8 O9 P1 P2 P5 Q1 Q3 Q5 S9 T2 U4 U5 U9 ZB5 ZB6 ZC1 ZC5 ZD3 ZD6 ZD7 ZH2 ZH5 ZI2 ZI5 ZI7 ZI9 ZJ3 ZJ4 ZJ7 F8 I6 G1 boolean volumemaker A5 A6 B3 B4 B7 B9 D3 D4 D7 F1 boolean bopcut_2d D5 bugs modalg_5 bug25043 bugs modalg_2 bug472_1 bug472_2 bug472_3 Test cases updated because they are still bad but can be accepted as non-regression: boolean volumemaker C4 A3 A7 E6 bugs modalg_1 bug10232 boolean bsection N2 Put new TODO in the scripts: bugs modalg_5 bug25232_9 bugs modalg_6 bug26619 bugs modalg_1 buc60462_2 bugs modalg_4 bug772 For the following tests the result in fix became better, so take fix result as the reference: bugs modalg_5 bug24628 bugs modalg_6 bug26954_3 boolean volumemaker A4 B5 B6 C3 C8 D2 D5 F2 bugs modalg_2 bug472_2 bugs modalg_1 buc60776_1 - Add the method SetNonDestructive to API classes of user level
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 only bare sources of OCCT; many C++ files, HTML documentation, and project files / makefiles for building OCCT need to be generated. - Complete source archive: contains all sources of OCCT, including C++ files generated by WOK, HTML and PDF documentation, and projects / makefiles 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.org 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 accompanyog 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). Run batch file *gendoc.bat* on Windows or Bash scriot *gendoc.sh* on Linux or Mac 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