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Archived issue #0025063

Visualization - 2D objects are not displayed at some camera positions

Open CASCADEOCCT:Visualizationclosed5 public notes

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Description

Two issues occurs within 2D objects - camera frustum become extremely thin leading to broken (missing) presentation and rotation, and FPE exception goes from OpenGl_BVHTreeSelector (leading to application crash):
Standard_ShortReal OpenGl_BVHTreeSelector::SignedPlanePointDistance (const OpenGl_Vec4& theNormal,
                                                                     const OpenGl_Vec4& thePnt)
{
  const Standard_ShortReal aNormLength = std::sqrt (theNormal.x() * theNormal.x()
                                                  + theNormal.y() * theNormal.y()
                                                  + theNormal.z() * theNormal.z());
  const Standard_ShortReal anInvNormLength = 1.0f / aNormLength;

aNormLength is zero in this case.

Steps to reproduce

pload MODELING VISUALIZATION
vinit
vtop
vline l -90 -90 130 90 90 130
vfit

Public activity

5 archived notes

Participants are labeled by their role within this record.

01Commenter 1
Dear kgv,

please take a look at the patch.
02Author
Please test the patch.
03Commenter 3
Dear Commenter 1,

Branch CR25063 from occt git-repository (and master from products git-repository) was compiled on Linux and Windows platforms and tested.
[revision removed]

Number of compiler warnings:

occt component :
Linux: 15 (15 on master)
Windows: 0 (0 on master)

products component :
Linux: 11 (11 on master)
Windows: 2 (2 on master)

Regressions/Differences:
No regressions/differences

Testing cases:
http://occt-tests/CR25063-master-occt/Debian60-64/bugs/vis/bug25063.html
http://occt-tests/CR25063-master-occt/Windows-32-VC9/bugs/vis/bug25063.html
bugs vis(004) bug25063: OK

Testing on Linux:
Total MEMORY difference: 352626012 / 352298144
Total CPU difference: 53569.63000000009 / 54524.60999999987

Testing on Windows:
Total MEMORY difference: 377760636 / 378502168
Total CPU difference: 41164.125 / 46775.625

There are no differences in images found by testdiff.
04Commenter 3
Branch [archived branch] has been updated by Participant.

[revision removed]
05Commenter 3
Branch [archived branch] has been deleted by Participant.

[revision removed]

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