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IDProjectCategoryView StatusDate SubmittedLast Update
0033905CommunityOCCT:Modeling Algorithmspublic2025-08-21 17:112026-01-13 19:21
Reporterj.bourgoin Assigned Toj.bourgoin  
PrioritynormalSeverityminor 
Status resolvedResolutionopen 
PlatformWindowsOSVC++ 2022 
Product Version7.7.1 
Summary0033905: BRepAlgoAPI_Common gives bad result
DescriptionHello,

The whole arg1.brep (see attached files) is considered as common part between arg1.brep and tool1.brep but that's clearly wrong (see attached picture)
Steps To Reproduce        BRepAlgoAPI_Common lBuilder ;
        lBuilder.SetRunParallel(false) ;
        TopTools_ListOfShape lArgs ;
        TopTools_ListOfShape lTools ;
        TopoDS_Shape arg, tool ;
        BRep_Builder builder ;

        BRepTools::Read(arg, "arg1.brep", builder) ;

        lArgs.Append(arg) ;
        lBuilder.SetArguments(lArgs) ;

        BRepTools::Read(tool, "tool1.brep", builder) ;

        lTools.Append(tool) ;
        lBuilder.SetTools(lTools) ;


        pFuzzyValue = 1.0e-6 ;
        lBuilder.SetFuzzyValue(pFuzzyValue) ;

        // Proceed !
        lBuilder.Build() ;

        if (lBuilder.IsDone())
        {
            // No errors ?
            if (!lBuilder.HasErrors())
            {
                // Extract shape
                lShape = lBuilder.Shape() ;
                BRepTools::Write(lShape, "common.brep") ;
            }
        }
TagsNo tags attached.
Test case number

Attached Files

Activities

j.bourgoin

2025-08-21 17:12

reporter   ~0117074

See attached files for example
tool1.brep (4,850 bytes)   
arg1.brep (4,153 bytes)   
common.brep (7,317 bytes)   
inputShapes.png (60,325 bytes)   

dpasukhi

2026-01-13 19:21

administrator   ~0117114

Merged into trad-781, repository: https://github.com/Open-Cascade-SAS/OCCT-Archive/tree/trad-781
Commit: a31ac47e3a25bef70583b1af6713948951ff5f56

Branch: https://github.com/Open-Cascade-SAS/OCCT-Archive/tree/trad-781

Issue History

Date Modified Username Field Change
2025-08-21 17:11 j.bourgoin New Issue
2025-08-21 17:11 j.bourgoin Assigned To => akaftasev
2025-08-21 17:12 j.bourgoin Note Added: 0117074
2025-08-21 17:12 j.bourgoin File Added: tool1.brep
2025-08-21 17:12 j.bourgoin File Added: arg1.brep
2025-08-21 17:12 j.bourgoin File Added: common.brep
2025-08-21 17:12 j.bourgoin File Added: inputShapes.png
2026-01-13 19:21 dpasukhi Assigned To akaftasev => j.bourgoin
2026-01-13 19:21 dpasukhi Status new => resolved
2026-01-13 19:21 dpasukhi Note Added: 0117114