OCC: Polar Pattern Cut silently erroneous
- Dominant language
- C++
- Stars
- 33.6k
- Forks
- 6k
- Avg merge
- 3d 15h
- Merged PRs (30d)
- 196
Description
### Problem description
Goal:
Outcome: one cut is missing !
### Workbench affected?
_No response_
### Steps to reproduce
[polar-cuts.FCStd.zip](https://github.com/user-attachments/files/29125166/polar-cuts.FCStd.zip)
### Expected behavior
The polar pattern should fail with an error or work and honor the preview.
### Actual behavior
no error, one cut missing.
### Development version About Info (in Safe Mode)
```shell
Tested on 2 versions:
OS: macOS 15.7.3
Architecture: x86_64
Version: 1.2.0dev.20260224 (Git shallow)
Build date: 2026/02/24 18:54:53
Build type: Release
Branch: (HEAD detached at 34ae16cd0)
Hash: 34ae16cd01b179eb9e1801591276dbc5a38669b5
Python 3.11.14, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.3.0, IfcOpenShell 0.8.2, OCC 7.8.1
Locale: English/United States (en_US) [ OS: English/Germany (en_DE) ]
Navigation Style/Orbit Style/Rotation Mode: TinkerCAD/Trackball/Object center
Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/
Logical DPI/Physical DPI/Pixel Ratio: 72/132.25/2
Installed mods:
* ThreadProfile 1.99.0
* EasyProfileFrame 0.0.1
* SmartSketch 0.1.0
* freecad.gears workbench 1.3.0
* parts_library
* Frame and beams workbench 0.1.1
* Fasteners Workbench 0.5.53
* AirplaneDesign 0.4.1
* Lattice2 Workbench 1.1.0
* SheetMetal Workbench 0.8.12
* Curves workbench 0.6.71
* Channels 0.1.0.dev4
OS: macOS 15.7.3
Architecture: x86_64
Version: 1.2.0dev.20260602 (Git shallow)
Build date: 2026/06/02 19:21:10
Build type: Release
Branch: (HEAD detached at 07de249ec)
Hash: 07de249ec749d3fba6710c78da8bca7c66243347
Python 3.11.14, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.3.0, Clipper2 , IfcOpenShell 0.8.2, OCC 7.8.1
Locale: English/United States (en_US) [ OS: English/Germany (en_DE) ]
Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/
Navigation Style/Orbit Style/Rotation Mode: TinkerCAD/Trackball/Object center
Logical DPI/Physical DPI/Pixel Ratio: 72/132.25/2
Installed mods:
* AirplaneDesign 0.4.1
* Channels 0.1.0.dev4
* Curves workbench 0.6.71
* EasyProfileFrame 0.0.1
* Fasteners Workbench 0.5.53
* Frame and beams workbench 0.1.1
* Lattice2 Workbench 1.1.0
* SheetMetal Workbench 0.8.12
* SmartSketch 0.1.0
* ThreadProfile 1.99.0
* freecad.gears workbench 1.3.0
* parts_library
```
### Last known good version (optional)
```shell
```
Contributor guide
Research direction
Open polar-cuts.FCStd.zip and reproduce the Polar Pattern Cut result, checking the preview against the final shape. Compare behavior across the two reported development versions; done means the operation either reports an error or produces all cuts shown in the preview.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100