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IDProjectCategoryView StatusDate SubmittedLast Update
0010240VTK(No Category)public2010-02-05 07:462016-08-12 09:55
Reporterrogoas 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0010240: vtkMergePoints does not work properly with this mesh that comes from vtkMarchingCubes algorithm
DescriptionI use vtkMarchingCubes with these parameters:

pMarchingCubesFilter->SetInput(m_pImageData);
pMarchingCubesFilter->SetValue(0,0.0);
pMarchingCubesFilter->ComputeNormalsOff();
pMarchingCubesFilter->ComputeScalarsOff();
pMarchingCubesFilter->ComputeGradientsOff();
pMarchingCubesFilter->ReleaseDataFlagOn();

m_pImageData is a float implicit funcition with dimensions (279x176x141)

The result that I obtain is like a cut mesh. It looks like a continuous mesh but if I apply vtkFeatureEdges to visualiza the boundary edges it appears that is like cut in fillets. This can be seen in the attached files.

If I use vtkCleanPolyData to merge that points it does not work unless I set a tolerance higher that 0, so that the vtkPointLocator is used to merge that points.

Another way of solving this is to pass a vtkPointLocator to marching cubes algorithm so that it doesn't use vtkMergePoints.

I attach this mesh so that you can try to pass it through vtkCleanData using vtkMergePoints.

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Type
Attached Filesrar file icon example.rar [^] (3,245,463 bytes) 2010-02-05 07:46

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  Notes
(0037141)
Kitware Robot (administrator)
2016-08-12 09:55

 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
2010-02-05 07:46 rogoas New Issue
2010-02-05 07:46 rogoas File Added: example.rar
2011-06-16 13:11 Zack Galbreath Category => (No Category)
2016-08-12 09:55 Kitware Robot Note Added: 0037141
2016-08-12 09:55 Kitware Robot Status expired => closed
2016-08-12 09:55 Kitware Robot Resolution open => moved
2016-08-12 09:55 Kitware Robot Assigned To => Kitware Robot

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