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Reserved identifier violation (header guards)

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. CodingCoding rules, trivial changes and misprintsCoding rules, trivial changes and misprints

2. BugSomething isn't workingSomething isn't working

Status: Open.

#1053 In Open-Cascade-SAS/OCCT;

· elfring opened on Feb 8, 2026

Improve exception safety with smart pointers

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. CodingCoding rules, trivial changes and misprintsCoding rules, trivial changes and misprints

2. BugSomething isn't workingSomething isn't working

Status: Open.

#1055 In Open-Cascade-SAS/OCCT;

· elfring opened on Feb 8, 2026

Multiplatform compilation testing on GH

1. ConfigurationCMake/QMake processes of OCCT or samplesCMake/QMake processes of OCCT or samples

1. TestingUpdating of the DRAW/GTests or GH testsUpdating of the DRAW/GTests or GH tests

2. EnhancementNew feature or requestNew feature or request

5. Internal

Status: Open.

#249 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Jan 9, 2025

Missing/incorrect faces in displayed STEP file

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. BugSomething isn't workingSomething isn't working

Status: Open.

Bug

#349 In Open-Cascade-SAS/OCCT;

· HuguesDelorme opened on Feb 7, 2025

Export dll functions bug

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. CodingCoding rules, trivial changes and misprintsCoding rules, trivial changes and misprints

1. ConfigurationCMake/QMake processes of OCCT or samplesCMake/QMake processes of OCCT or samples

2. BugSomething isn't workingSomething isn't working

2. EnhancementNew feature or requestNew feature or request

Status: Open.

#434 In Open-Cascade-SAS/OCCT;

· yDF8EPJN8 opened on Mar 13, 2025

DRAW command reference manual

1. DocumentationImprovements or additions to documentationImprovements or additions to documentation

1. DRAWTCL scripts, OCCT DRAW commands and plug-insTCL scripts, OCCT DRAW commands and plug-ins

2. EnhancementNew feature or requestNew feature or request

Status: Open.

#456 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Mar 22, 2025

Data Exchange - Structural storage and interface

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

2. EnhancementNew feature or requestNew feature or request

Status: Open.

#490 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Apr 11, 2025

Documentation - Single documentation for all version (readthedocs.com)

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. DocumentationImprovements or additions to documentationImprovements or additions to documentation

2. EnhancementNew feature or requestNew feature or request

Status: Open.

Feature

#505 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Apr 24, 2025

STEP import fails if cascade unit it set to M

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. BugSomething isn't workingSomething isn't working

Status: Open.

#512 In Open-Cascade-SAS/OCCT;

· martin-bernhard opened on May 6, 2025

Origin and color problems with SolidWorks STEP models.

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. BugSomething isn't workingSomething isn't working

Status: Open.

#541 In Open-Cascade-SAS/OCCT;

· dsa-t opened on May 16, 2025

OCC+VTK：The program crashed in debug mode

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. CodingCoding rules, trivial changes and misprintsCoding rules, trivial changes and misprints

1. VisualizationAIS cases, animation, ray-tracing, viewer integration into external software and etc...AIS cases, animation, ray-tracing, viewer integration into external software and etc...

2. BugSomething isn't workingSomething isn't working

Status: Open.

#568 In Open-Cascade-SAS/OCCT;

· YoHen-Fu opened on May 28, 2025

Extrema between two circular curves incorrect

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. ModelingBoolean operations, offsets, primitives, any conversion, brep builders and etc...Boolean operations, offsets, primitives, any conversion, brep builders and etc...

2. BugSomething isn't workingSomething isn't working

Status: Open.

#588 In Open-Cascade-SAS/OCCT;

· martin-bernhard opened on Jun 30, 2025

More than 10GB of memory needed for boolean operation between two simple faces

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. ModelingBoolean operations, offsets, primitives, any conversion, brep builders and etc...Boolean operations, offsets, primitives, any conversion, brep builders and etc...

2. BugSomething isn't workingSomething isn't working

Status: Open.

#724 In Open-Cascade-SAS/OCCT;

· Miel-M opened on Sep 17, 2025

Simplified wrapper for C++, Python and JS/TS

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

2. EnhancementNew feature or requestNew feature or request

Status: Open.

#791 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Nov 1, 2025

Add stream output support for STL, GLTF and other file formats

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. EnhancementNew feature or requestNew feature or request

Status: Open.

#837 In Open-Cascade-SAS/OCCT;

· jdegenstein opened on Nov 17, 2025

Unexpected memory footprint differences

0. NewThe issue was created, but not updated by maintainer. Waiting for updates labels and categoriesThe issue was created, but not updated by maintainer. Waiting for updates labels and categories

1. ModelingBoolean operations, offsets, primitives, any conversion, brep builders and etc...Boolean operations, offsets, primitives, any conversion, brep builders and etc...

2. BugSomething isn't workingSomething isn't working

Status: Open.

#1043 In Open-Cascade-SAS/OCCT;

· lucacarniato opened on Feb 2, 2026

0033818: Data Exchange - Regenerate flex file with latest version

1. ConfigurationCMake/QMake processes of OCCT or samplesCMake/QMake processes of OCCT or samples

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. EnhancementNew feature or requestNew feature or request

3. Tests failedSome tests result are wailed, waits for fixSome tests result are wailed, waits for fix

Status: Draft (not ready).

Open-Cascade-SAS/OCCTnumber 59

#59 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Sep 7, 2024

Documenting - Rework doxygen documentation for markdawn

Status: Open (in progress).

Open-Cascade-SAS/OCCTnumber 277

#277 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Jan 21, 2025

Data Exchange - Add animation support to XCAF document structure

1. Data ExchangeImport/Export or iterating of the CAD dataImport/Export or iterating of the CAD data

2. EnhancementNew feature or requestNew feature or request

Status: Open (in progress).

Open-Cascade-SAS/OCCTnumber 492

#492 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Apr 11, 2025

Draw, MacOS - Fix image generation issue

1. DRAWTCL scripts, OCCT DRAW commands and plug-insTCL scripts, OCCT DRAW commands and plug-ins

1. TestingUpdating of the DRAW/GTests or GH testsUpdating of the DRAW/GTests or GH tests

Status: Draft (not ready).

Open-Cascade-SAS/OCCTnumber 657

#657 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Jul 30, 2025

Modeling - Add extrema computation for non-coplanar circles

1. ModelingBoolean operations, offsets, primitives, any conversion, brep builders and etc...Boolean operations, offsets, primitives, any conversion, brep builders and etc...

2. BugSomething isn't workingSomething isn't working

Status: Draft (not ready).

Open-Cascade-SAS/OCCTnumber 868

#868 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Nov 30, 2025

Configuration - Parallel installing and improve catching cmake version

1. ConfigurationCMake/QMake processes of OCCT or samplesCMake/QMake processes of OCCT or samples

Status: Draft (not ready).

Open-Cascade-SAS/OCCTnumber 914

#914 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Dec 15, 2025

Visualization - Added visible flag to the layer settings.

1. VisualizationAIS cases, animation, ray-tracing, viewer integration into external software and etc...AIS cases, animation, ray-tracing, viewer integration into external software and etc...

2. EnhancementNew feature or requestNew feature or request

Status: Open (in progress).

Open-Cascade-SAS/OCCTnumber 943

#943 In Open-Cascade-SAS/OCCT;

· dipts opened on Dec 20, 2025

Modeling - Add new Extrema packages for geometric extrema computations

1. ModelingBoolean operations, offsets, primitives, any conversion, brep builders and etc...Boolean operations, offsets, primitives, any conversion, brep builders and etc...

Status: Draft (not ready).

Open-Cascade-SAS/OCCTnumber 976

#976 In Open-Cascade-SAS/OCCT;

· dpasukhi opened on Jan 2, 2026

Coding - C++17 modernization sweep (nullptr, using, override, constexpr, throw())

1. CodingCoding rules, trivial changes and misprintsCoding rules, trivial changes and misprints

2. EnhancementNew feature or requestNew feature or request

3. CLA approvedUser has the signed CLA and ready to review or integration processesUser has the signed CLA and ready to review or integration processes

Status: Open (in progress).

Open-Cascade-SAS/OCCTnumber 1205

#1205 In Open-Cascade-SAS/OCCT;

· jijinbei opened on Apr 18, 2026