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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0015589 | VTK | (No Category) | public | 2015-07-17 09:24 | 2015-07-28 10:33 | ||||
| Reporter | Cory Quammen | ||||||||
| Assigned To | David Gobbi | ||||||||
| Priority | low | Severity | minor | Reproducibility | have not tried | ||||
| Status | closed | Resolution | fixed | ||||||
| Platform | OS | OS Version | |||||||
| Product Version | 6.2.0 | ||||||||
| Target Version | Fixed in Version | 6.3.0 | |||||||
| Summary | 0015589: Failure case for vtkContourTriangulator | ||||||||
| Description | The attached contour causes the vtkContourTriangulator to fail. I have not looked into where the filter is failing, but post this here as a reference. The filter succeeds on all other similar contours that I've tried (and even more complex contours). Just this one gives me problems. | ||||||||
| Tags | No tags attached. | ||||||||
| Project | TBD | ||||||||
| Type | incorrect functionality | ||||||||
| Attached Files |  ContourTriangulatorFail.vtp [^] (11,854 bytes) 2015-07-17 09:24 Screen Shot 2015-07-17 at 9.55.11 AM.png [^] (8,363 bytes) 2015-07-17 11:54
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(0034801) David Gobbi (developer) 2015-07-17 12:12 |
Looks like a bug in the way the winding is computed. It's filling in all the concavities on the outside, rather than filling the interior. The problem doesn't appear to be degeneracy (vtkCleanPolyData didn't fix) or connectivity (vtkStripper didn't fix, even though it produced a single polyline as output). The GetTriangulationError() returns "true" after execution, so the filter itself knows that something went wrong. |
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(0034810) David Gobbi (developer) 2015-07-20 15:12 |
https://gitlab.kitware.com/vtk/vtk/merge_requests/439 [^] The code in vtkPolygon.cxx for computing the polygon normal also looks wrong: https://gitlab.kitware.com/vtk/vtk/blob/master/Common/DataModel/vtkPolygon.cxx#L192 [^] What's worse, it has four copies of the polygon normal code, all with slight variations! |
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(0034846) Cory Quammen (developer) 2015-07-28 10:33 |
David's patch was merged into master. |
| Notes |
| Issue History | |||
| Date Modified | Username | Field | Change |
| 2015-07-17 09:24 | Cory Quammen | New Issue | |
| 2015-07-17 09:24 | Cory Quammen | Assigned To | => David Gobbi |
| 2015-07-17 09:24 | Cory Quammen | File Added: ContourTriangulatorFail.vtp | |
| 2015-07-17 11:54 | David Gobbi | File Added: Screen Shot 2015-07-17 at 9.55.11 AM.png | |
| 2015-07-17 12:12 | David Gobbi | Note Added: 0034801 | |
| 2015-07-20 15:12 | David Gobbi | Note Added: 0034810 | |
| 2015-07-28 10:33 | Cory Quammen | Note Added: 0034846 | |
| 2015-07-28 10:33 | Cory Quammen | Status | backlog => closed |
| 2015-07-28 10:33 | Cory Quammen | Resolution | open => fixed |
| 2015-07-28 10:33 | Cory Quammen | Fixed in Version | => 6.3.0 |
| Issue History |
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