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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0002531 | VTK | (No Category) | public | 2005-11-28 13:56 | 2016-08-12 09:54 | ||||
| Reporter | David Gobbi | ||||||||
| Assigned To | Will Schroeder | ||||||||
| Priority | low | Severity | major | Reproducibility | always | ||||
| Status | closed | Resolution | moved | ||||||
| Platform | OS | OS Version | |||||||
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| Target Version | Fixed in Version | ||||||||
| Summary | 0002531: OBB tree tolerance not always applied correctly | ||||||||
| Description | These comments refer to Revision: 1.63 of vtkOBBTree.cxx The Tolerance in a locator is meant to signify an absolute distance in world coordinates. Two vtkOBBTree methods do not properly use the tolerance: DisjointOBBNodes and TriangleIntersectsNode. Neither of these methods are covered by any tests. DisjointOBBNodes: The "rangeAMax", "rangeAMin" etc. are in units of world coord dimension squared. Before "eps" is added to these values, it needs to be scaled appropriately. Because it is not scaled properly, too small a tolerance is applied to large OBB nodes, and too large a tolerance is applied to small OBB nodes. On line 1513 (the 1st test), "eps" should be multiplied by the modulus of "AtoB" in order to scale it properly. On line 1540 (the 2nd test, which is called the 3rd test in the code), "eps" should be multiplied by the modulus of pB->Axes[ii]. On line 1568 (the 3nd test, which is called the 2nd test in the code), "eps" should be multiplied by the modulus of pA->Axes[ii]. On line 1608 (the 4st test), "eps" should be multiplied by the modulus of "AtoB". TriangleIntersectsNode has similar problems with its three checks. | ||||||||
| Tags | No tags attached. | ||||||||
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(0036809) Kitware Robot (administrator) 2016-08-12 09:54 |
Resolving issue as `moved`. This issue tracker is no longer used. Further discussion of this issue may take place in the current VTK Issues page linked in the banner at the top of this page. |
| Notes |
| Issue History | |||
| Date Modified | Username | Field | Change |
| 2011-06-16 13:11 | Zack Galbreath | Category | => (No Category) |
| 2016-08-12 09:54 | Kitware Robot | Note Added: 0036809 | |
| 2016-08-12 09:54 | Kitware Robot | Status | expired => closed |
| 2016-08-12 09:54 | Kitware Robot | Resolution | open => moved |
| Issue History |
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