Open-Cascade-SAS/OCCT V6_8_0

on GitHub

Version 6.8.0 - November 10, 2014. Highlights (news):

Foundation Classes

• Using NULL as invalid pointer in Handle classes, instead of custom constant (0xfefd0000...);
• STL-compatible iterators for classes in NCollection package;
• Code clean-up: removing usage of config.h, support of pre-standard STL streams, unused CDL template (“generic”) classes and instantiations, etc.;

Modelling

• Data structures for Bounded Volume Hierarchy (BVH) algorithms;
• Two new algorithms of global optimization in math, used for Extrema;
• Parallelization of Boolean Operations algorithm;
• Interface to break execution of Boolean Operations algorithm;
• Possibility to protect shape against modification of geometry;
• Refactoring and optimization of BRepMesh algorithm;
• New option in 2d offset algorithm allowing to keep sharp corners and build one-side offset on open wire;

Visualization

• New component, VIS, providing interactive services (similar to AIS) for OCCT shapes in VTK viewer;
• New approach for manipulations with views using camera paradigm;
• Support of stereoscopic display (requires graphic card supporting OpenGL Quad Buffer);
• Improved support of perspective views;
• Ray tracing now uses shaders (GLSL) instead of OpenCL;
• Possibility to combine objects drawn by OpenGL and ray tracing in one view;
• Frustum culling for fast display of large number of objects with high zoom;
• Initial support for OpenGL ES 2.0 for mobile platforms;
• New classes for display of colored shapes and point clouds in AIS;
• Revised and completed implementation of connected interactive objects;
• Improved handling of temporary objects in the viewer (immediate mode);

Data Exchange

• Support of COMPSOLIDs in STEP export;
• Support of UNICODE (UTF-8) filenames;
• Support of names and attributes assigned to points (vertices) in XCAF;

DRAW

• FPE signal handlers are disabled by default;
• New sample scripts demonstrating modeling and visualization capabilities in DRAW;
• Improved usability of top level menu (help browser, samples, User Guide);

Documentation

• New User Guide describing Boolean Operations algorithms;
• Improvement of extraction of class documentation for Reference Manual;

Samples

• New sample for using drawing OCCT 3D viewer into Direct3D surface in WPF applications;

Build system

• Support of building on Android (except for DRAW);

Products

• New (experimental) mode in Express Mesh, allowing generation of all-quad meshes;
• Universal interface to export mesh produced by Express Mesh;
• Improved triangulation near face boundaries in Express Mesh (Delaunay meshing);
• Update of training materials and samples;
• Translation of HATCH entities from DXF;
• Boolean operations on meshes in OMF provide history on elements and handle complex cases;
• Visualization of meshes in OMF takes into account direction of normal vectors to surface;
• New wrapper for OCCT classes for Java language;