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IDProjectCategoryView StatusLast Update
0033906CommunityOCCT:Meshpublic2025-09-05 16:09
Reporterj.bourgoin Assigned Tooan  
PrioritynormalSeveritymajor 
Status newResolutionopen 
PlatformWindowsOSVC++ 2022 
Product Version7.7.1 
Summary0033906: BRepMesh_IncrementalMesh gives bad results
DescriptionHello,

With the attached shape, when I give to BRepMesh_IncrementalMesh a more accurate deflection I get a bad mesh at specfic areas.
Steps To Reproduce            BRepMesh_IncrementalMesh lIncrMesh ;
            lIncrMesh.SetShape(lShape) ;
            
            // Good result
            lIncrMesh.ChangeParameters().Deflection = 0.09 ;
            lIncrMesh.Perform() ;
            BRepTools::Write(lShape, "test_009.brep") ;

            // Bad result
            lIncrMesh.ChangeParameters().Deflection = 0.06 ;
            lIncrMesh.Perform() ;
            BRepTools::Write(lShape, "test_006.brep") ;
TagsNo tags attached.
Test case number

Attached Files

Activities

j.bourgoin

2025-09-02 15:40

reporter   ~0117077

test_006.brep (1,211,601 bytes)   
test_009.brep (1,165,046 bytes)   
test_009.png (80,082 bytes)   
test_006.png (72,480 bytes)   

ika

2025-09-05 16:02

reporter   ~0117081

Hello @j.bourgoin,

I don't see an initial shape, only the resulting files, could you please attach?

j.bourgoin

2025-09-05 16:09

reporter   ~0117082

Hello Ika,

test_009.brep can be used as the initial shape.

Issue History

Date Modified Username Field Change
2025-09-02 15:38 j.bourgoin New Issue
2025-09-02 15:38 j.bourgoin Assigned To => oan
2025-09-02 15:40 j.bourgoin Note Added: 0117077
2025-09-02 15:40 j.bourgoin File Added: test_006.brep
2025-09-02 15:40 j.bourgoin File Added: test_009.brep
2025-09-02 15:40 j.bourgoin File Added: test_009.png
2025-09-02 15:40 j.bourgoin File Added: test_006.png
2025-09-05 16:02 ika Note Added: 0117081
2025-09-05 16:09 j.bourgoin Note Added: 0117082