View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0032462 | Community | OCCT:Mesh | public | 2021-06-27 01:34 | 2023-08-01 15:08 |
| Reporter | gstamm | Assigned To | oan | ||
| Priority | normal | Severity | minor | ||
| Status | new | Resolution | open | ||
| Platform | Windows 10 | OS | Windows 10 | ||
| Product Version | 7.4.0 | ||||
| Target Version | Unscheduled | ||||
| Summary | 0032462: Mesh - missing face issue, bad surface and bad volume [Regression compared to OCCT 7.3.0] | ||||
| Description | Hello dear community, I'm facing an issue with the kernel of OCC. To illustrate my issue I'm using CAD Assistant in the snapshots, but same regression could be observed with FreeCAD, PythonOCC... If you open the attached STEP file in two version of CAD Assistant, in the more recent version, one face is missing, and then on this part volume and surface computation are KO. cad_assistant_1.5.0_2020-12-28_win64 : version used for KO snapshot cad_assistant_1.2_2018-10-30_win64 : version used for OK snapshot. Do you have an idea on how to treat this part with the last versions of the kernel? Healing of the step file? Bug in the kernel? Thanks for your attention, Best regards Guillaume STAMM | ||||
| Steps To Reproduce | pload MODELING VISUALIZATION restore vol_731dev.brep b #testreadstep volume_ko.stp b tclean b checkshape b b incmesh b 1.0 vinit View1 vdisplay -dispMode 1 b vfit # KO checkshape: > -- The Shape b looks OK incmesh: > Meshing statuses: SelfIntersectingWire Failure | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
| related to | 0025061 | new | oan | Open CASCADE | BRepMesh should skip internal wires with self intersections to produce mesh for the shape anyway |
| related to | 0024084 | assigned | oan | Open CASCADE | Additional tool for resolving 2d loops on discretized wires should be implemented in BRepMesh |
| child of | 0026106 | closed | bugmaster | Open CASCADE | BRepMesh - revision of data model |
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issue 3d and snapshots.zip (369,257 bytes) |
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vol_731dev.brep (566,317 bytes) |
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> in the more recent version, one face is missing Face is not missing, it is still there, but triangulation algorithm fails on it due to wire self-intersection error. This is either a problem in Face definition, or BRepMesh classifier issue. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-06-27 01:34 | gstamm | New Issue | |
| 2021-06-27 01:34 | gstamm | Assigned To | => abv |
| 2021-06-27 01:34 | gstamm | File Added: issue 3d and snapshots.zip | |
| 2021-06-28 15:13 | kgv | File Added: vol_731dev.brep | |
| 2021-06-28 15:19 | kgv | Note Added: 0102119 | |
| 2021-06-28 15:19 | kgv | Product Version | 7.5.1 => 7.4.0 |
| 2021-06-28 15:19 | kgv | Target Version | => 7.6.0 |
| 2021-06-28 15:19 | kgv | Steps to Reproduce Updated | |
| 2021-06-28 15:20 | kgv | Assigned To | abv => oan |
| 2021-06-28 15:20 | kgv | Severity | major => minor |
| 2021-06-28 15:20 | kgv | Category | OCCT:Foundation Classes => OCCT:Mesh |
| 2021-06-28 15:20 | kgv | Summary | Regression on OCC: missing face issue, bad surface and bad volume => Mesh - missing face issue, bad surface and bad volume [Regression compared to OCCT 7.3.0] |
| 2021-06-28 15:22 | kgv | Relationship added | child of 0026106 |
| 2021-06-28 15:22 | kgv | Relationship added | related to 0025061 |
| 2021-06-29 11:42 | oan | Relationship added | related to 0024084 |
| 2021-11-01 18:13 | szy | Target Version | 7.6.0 => 7.7.0 |
| 2022-10-24 10:40 | szy | Target Version | 7.7.0 => 7.8.0 |
| 2023-08-01 15:08 | dpasukhi | Target Version | 7.8.0 => Unscheduled |
