V6_9_0

Version 6.9.0 - May 12, 2015. Highlights (news):

Modeling algorithms

• Fuzzy Boolean operations - possibility to specify global tolerance for a Boolean operation;
• Support of multiple arguments for a single Boolean operation;
• Improved performance and thread safety;
• Shape proximity detector;
• Revised usage of Closed flag in shapes;
• Precise evaluation of edge tolerance;
• Additional options to tune BRepMesh algorithm;
• More robust algorithms of surface-surface intersection and curve on surface projection;
• Improved support of user feedback messages in Shape Processing;
• New tool to eliminate small solids in ShapeFix;

Visualization

• Redesign of selection mechanism for better performance;
• OpenGL ES 2.0 compatibility improvements;
• Support of OpenGL viewer on iOS and ray tracing on OS X;
• Robust implementation of immediate mode using FBO;
• Option to disable automatic re-triangulation of shapes on display;

Data Exchange

• Reconstruction of p-curves optimized to accelerate import from STEP;
• Colors of edges and faces are written to IGES 5.3;
• Orientation of faces is preserved on export to IGES 5.1;
• Export to STL and VRML 2.0 corrected;

Other

• Support of parallelism without TBB library;
• 64-bit mode becomes default on Windows;
• Improved stability of performance measurements in tests;

Products

• Express Mesh: improved quality of mesh near face boundary;
• C# and Java wrappers: Support of SWIG 3.x;
• DXF Import: Reading of the recent DXF versions with ACIS data encoded in binary form;
• ACIS SAT Import: Reading of SAB (Standard ACIS Binary) files

V6_8_0

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;

V6_7_0

Version 6.7.0 - December 18, 2013 (see also Release Notes).

Minor (feature) release. Highlights:

• License has been changed to LGPL-2.1-only with additional exception;
• Dynamic clipping of shaded objects by arbitrary planes, with cross-section visualized by capping algorithm;
• Optimized and enhanced presentation of point markers using point sprites and VBO;
• Enhanced presentation of dimensions;
• Support of GLSL programs;
• Ray tracing mode of display of shaded objects in OCCT viewer providing high-quality image (including sharp shadows, correct transparency, reflections);
• Functionality to create BRep shape representing a text string (with specified font);
• Multiple corrections in Voxel package;
• New (more robust) 2D fillet algorithm;
• New documentation system: Doxygen is used to generate Overview and User Guides, their sources are included in OCCT sources;
• Considerably improved code stability, and clean-up of compiler warnings;
• Algorithm of result assembling in Boolean Operations is made parallel;
• Optimization: use of SSE2 instructions, refactored code of b-spline evaluation, revised XML persistence of binary data;
• Refactored CSharp sample, now including WPF front-end;
• Official support of Intel compiler, Visual Studio 2013, and Mac OS X 10.9 Mavericks.

V6_6_0

Version 6.6.0 - April 22, 2013.

Feature release incorporating new functionality. Highlights (news):

• Official support of Mac OS X, Windows 8 and Visual Studio 2012
• On Mac OS X, visualization with native Cocoa API and XCode 4 project files
• Refactored Boolean operations algorithm. Possibility to enable automatic check of input parameters and results and generation of data for bug report
• Redesign of texture management
• Accelerated text visualization; use of FTGL library is dropped
• Removal of obsolete 2D viewer and plotter support libraries. 3D viewer libraries become the unified way to render both 2D and 3D graphics
• TKOpenGl is now linked at build time, not at run time
• Import / export made independent on current global locale
• Universal CMake build scripts
• New automated testing system

V6_5_0

Version 6.5.0 - March 6, 2011. Highlights (see also Release Notes]):

• Implementation of FreeImage(plus) library
• Reading and writing non-manifold topology via STEP interface
• Draw commands for testing Collision Detection product
• New definition of dependencies on external libraries
• Trihedron with graduated axes in OCC viewer
• Removal of Wrappers, Java sample and Java (Jcas) redistributables