Open CASCADE Technology 7.6.3 maintenance release

Open Cascade is pleased to announce that the next Open CASCADE Technology (OCCT) maintenance release (version 7.6.3) is prepared.

The sources of Open CASCADE Technology 7.6.3 are available under the V7_6_3 tag in the OCCT repository.

This maintenance release fixes the following critical problems:

29406: Foundation Classes – gp_Ax3 fails setting direction
31661: Modeling Data – Exception when projecting parabola or hyperbola to plane
32679: Data Exchange – STEP writer loses assembly instance name
32692: Mesh – In BRepMesh_ModelPreProcessor avoid crashes with problematic topology
32744: Modeling Algorithms – Endless loop in GCPnts_UniformDeflection
32864: Modeling Algorithms – Normal projection of a wire on a cylinder produces wrong result
32882: Modeling Data – Extrema curve/curve cannot find all solutions (OCCT 7.6 backport)
32914: Data Exchange – Some parts of compound are lost while writing STEP in nonmanifold mode
32915: Geom2dAPI_InterCurveCurve, The algorithm lost an intersection point.
32929: Modeling Algorithms – Crash in PerformIntersectionAtEnd after deletion of surfdata
32930: Modeling Algorithms – Crash in PerformIntersectionAtEnd when no face was found
32931: Modeling Algorithms – Crash in ChFi3d_IsInFront when no face was found
32973: Modeling Algorithms – Regression in BRepExtrema_DistShapeShape compared with 7.5
32990: Configuration – compilation errors since Emscripten 3.1.11 due to time_t redefined long->int
32991: Visualization, TKOpenGl – OpenGl_Window::Resize() ignores window virtual flag on macOS
33028: Standard_ConstructionError while using ShapeUpgrade_UnifySameDomain
33060: [Regression to 7.4.0] Mesh – Sub-precisional links provoke failure on face
33074: Visualization, TKOpenGl – PBR shader compilation error on Mesa OpenGL 3.1