View Issue Details

IDProjectCategoryView StatusLast Update
0032836CommunityOCCT:Data Exchangepublic2022-10-19 00:37
Reporterxuzhongxing Assigned Togka  
PrioritynormalSeveritymajor 
Status newResolutionopen 
PlatformLinuxOSDebian 6.0 
Product Version7.6.0 
Summary0032836: Mesh - the model has incomplete visualization compared to ACIS kernel
DescriptionImport and mesh the STEP model with OCCT BRepMesh_IncrementalMesh. It has incomplete visualization compared with other CAD kernel, e.g., ACIS.

I tested with 3 mthods: my own code, FreeCAD, and Mayo. All give the same defect.

13:29 ...    Step File Reading : 'dwojnog ris.stp'      ...    STEP File   Read    ...
            ... Step File loaded  ...
         92738 records (entities,sub-lists,scopes), 265221 parameters      ... Parameters prepared ...
            ...   Objects analysed  ...
        STEP Loading done : 59625 Entities
13:29 Count	STEP Reader Warnings for 'dwojnog ris.stp'
       -----	-----------
           4	W:(NAMED_UNIT,PLANE_ANGLE_UNIT,SI_UNIT): Parameter n0.1 (dimensions) not Derived
           4	W:(NAMED_UNIT,SI_UNIT,SOLID_ANGLE_UNIT): Parameter n0.1 (dimensions) not Derived
           4	W:(LENGTH_UNIT,NAMED_UNIT,SI_UNIT): Parameter n0.1 (dimensions) not Derived
          Nb Total:12  for 3 items
13:29 Count	STEP Translator Warnings for 'dwojnog ris.stp'
       -----	-----------
         147	W:FACE_SURFACE: Missing seam-edge added
          31	W:CLOSED_SHELL: Improperly connected shell split into parts
         202	W:EDGE_LOOP: Edges were intersecting, corrected
           1	W:(BOUNDED_SURFACE,B_SPLINE_SURFACE,B_SPLINE_SURFACE_WITH_KNOTS,GEOMETRIC_REPRESENTATION_ITEM,RATIONAL_B_SPLINE_SURFACE,REPRESENTATION_ITEM,SURFACE): Surface forced to be periodic
          12	W:B_SPLINE_SURFACE_WITH_KNOTS: Surface forced to be periodic
          Nb Total:393  for 5 items
TagsNo tags attached.
Test case number

Attached Files

  • occt.png (54,916 bytes)
  • acis.png (173,387 bytes)
  • dwojnog ris.zip (734,148 bytes)

Relationships

related to 0032496 newgka Data Exchange - STEP surface_of_revolution does not display 

Activities

xuzhongxing

2022-02-16 10:03

reporter   ~0106915

occt.png (54,916 bytes)
acis.png (173,387 bytes)
dwojnog ris.zip (734,148 bytes)

kgv

2022-02-16 13:33

developer   ~0106926

Last edited: 2022-02-16 13:33

It doesn't look like a meshing issue to me - more like an invalid STEP definition or some issue in OCCT STEP translator / shape healing.

xuzhongxing

2022-03-08 07:53

reporter   ~0107237

Possible related issue: https://tracker.dev.opencascade.org/view.php?id=32496

Issue History

Date Modified Username Field Change
2022-02-16 10:01 xuzhongxing New Issue
2022-02-16 10:01 xuzhongxing Assigned To => oan
2022-02-16 10:03 xuzhongxing Note Added: 0106915
2022-02-16 10:03 xuzhongxing File Added: occt.png
2022-02-16 10:03 xuzhongxing File Added: acis.png
2022-02-16 10:03 xuzhongxing File Added: dwojnog ris.zip
2022-02-16 13:28 kgv Summary This model has incomplete visualization compared to ACIS kernel => Mesh - the model has incomplete visualization compared to ACIS kernel
2022-02-16 13:31 kgv Description Updated
2022-02-16 13:33 kgv Note Added: 0106926
2022-02-16 13:33 kgv Note Edited: 0106926
2022-03-08 07:53 xuzhongxing Note Added: 0107237
2022-03-08 11:07 kgv Relationship added related to 0032496
2022-10-19 00:37 oan Assigned To oan => gka
2022-10-19 00:37 oan Category OCCT:Mesh => OCCT:Data Exchange