View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0031453 | Community | OCCT:Modeling Algorithms | public | 2020-03-20 19:02 | 2023-08-01 15:08 |
| Reporter | blobfish | Assigned To | |||
| Priority | normal | Severity | minor | ||
| Status | new | Resolution | open | ||
| Platform | Linux | OS | Debian | ||
| Product Version | 7.4.0 | ||||
| Target Version | Unscheduled | ||||
| Summary | 0031453: Modeling Algorithms - simple chamfer smashes vertex tolerance | ||||
| Description | chamfering a box causes the new vertices to have a much looser tolerance than expected. A simple blend in the same condition keeps Precision::Confusion. | ||||
| Steps To Reproduce | pload MODELING box b 20 20 20 explode b E chamf c b b_1 1.0 maxtolerance c output:
## Tolerances on the shape c (nbFaces:7 nbEdges:15 nbVtx:10)
Face : Min 1.00000e-07 Max 1.00000e-07
Edge : Min 1.00000e-07 Max 1.00000e-07
Vertex : Min 1.00000e-07 Max 1.00000e-04
| ||||
| Additional information and documentation updates | occt 7.4, actually 8bfae263c1 I have not tested with an older version, but I believe this is a regression as I haven't noticed this behavior before. | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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We should check if it is a regression. |
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Problem: tolreached is never set for plane to plane intersection. So the edge tolerance is set to the 'loose' input tolerance and vertex tolerances are established from the edge. Interestingly, the edge tolerance gets fixed in a later 'SameParameter' operation and we are just left with the 'loose' vertex tolerances. I was able to fix this by inserting: 'tolreached = Min(tolreached,ChFi3d_EvalTolReached(S1,Pc1,S2,Pc2,C3d));' to: src/ChFi3d/ChFi3d_Builder_0.cxx:3183 comments: That function call is probably overkill in a 'plane to plane' intersection, but it was the least intrusive change I could come up, short of just assigning precision::confusion. This appears to fix the problem, but I have NOT done any regression tests. I looked into using tolr1 and tolr2, but they are never updated by ProjLib_ProjectedCurve in the planar case. ChFi3d_Builder_0.cxx:3180 to: ChFi3d_Builder_0.cxx:1185 to: src/ProjLib/ProjLib_ProjectedCurve.cxx:419 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-03-20 19:02 | blobfish | New Issue | |
| 2020-03-20 19:02 | blobfish | Assigned To | => msv |
| 2020-03-20 21:10 |
|
Assigned To | msv => szy |
| 2020-03-20 21:10 |
|
Note Added: 0091096 | |
| 2021-04-01 14:15 | blobfish | Note Added: 0099946 | |
| 2021-04-01 14:26 | kgv | Product Version | => 7.5.0 |
| 2021-04-01 14:26 | kgv | Target Version | => 7.6.0 |
| 2021-04-01 14:26 | kgv | Summary | simple chamfer smashes vertex tolerance => Modeling Algorithms - simple chamfer smashes vertex tolerance |
| 2021-04-01 14:26 | kgv | Steps to Reproduce Updated | |
| 2021-04-01 14:26 | kgv | Product Version | 7.5.0 => 7.4.0 |
| 2021-08-29 19:24 |
|
Target Version | 7.6.0 => 7.7.0 |
| 2022-10-24 10:41 |
|
Target Version | 7.7.0 => 7.8.0 |
| 2023-08-01 15:08 | dpasukhi | Target Version | 7.8.0 => Unscheduled |
