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IDProjectCategoryView StatusDate SubmittedLast Update
0003225VTK(No Category)public2006-05-12 15:282016-08-12 09:54
ReporterEdson Tadeu M. Manoel 
Assigned ToWill Schroeder 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0003225: vtkWedge EvaluatePosition and faces
DescriptionThere is a bug in vtkWedge::EvaluatePosition, it can tell a point is inside when in reality it is outside.

E.g, try to create a vtkWedge with the following points:
(8,0,0), (16,0,0), (16,8,0), (8,0,8), (16,0,8), (16,8,8)

And try to EvaluatePosition for point (17,6,4). It will return 1, telling it is inside.

A solution is to change the following code:

  if ( pcoords[0] >= -0.001 && pcoords[0] <= 1.001 &&
  pcoords[1] >= -0.001 && pcoords[1] <= 1.001 &&
  pcoords[2] >= -0.001 && pcoords[2] <= 1.001 )

To:

   if ( pcoords[0] >= -0.001 && pcoords[1] >= -0.001 &&
       (pcoords[0] + pcoords[1]) <= 1.001 &&
        pcoords[2] >= -0.001 && pcoords[2] <= 1.001 )



There is another bug in its faces array (and with GetFace and GetFaceArray):
The faces normals are pointing inside, instead of outside (as of all other 3D cells).
Instead of:

static int faces[5][4] = { {0,1,2,-1}, {3,5,4,-1},
                           {0,3,4,1}, {1,4,5,2}, {2,5,3,0} };

It should be:

static int faces[5][4] = { {0,2,1,-1}, {3,4,5,-1},
                           {0,1,4,3}, {1,2,5,4}, {2,0,3,5} };
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  Notes
(0036867)
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.

 Issue History
Date Modified Username Field Change
2008-02-06 10:21 Jeff Baumes Assigned To Mathieu Malaterre => Will Schroeder
2011-06-16 13:11 Zack Galbreath Category => (No Category)
2016-08-12 09:54 Kitware Robot Note Added: 0036867
2016-08-12 09:54 Kitware Robot Status expired => closed
2016-08-12 09:54 Kitware Robot Resolution open => moved

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