[vtkusers] vtkTriangleFilter "Bug"- Just 2 Triangles share a PointID

[Lisa S. Avila]

Hello Roma,

If you start with a quad and pass it to triangle filter, you will get 2 
vertices shared by two triangles each, and two vertices used by only one 
triangle each.

It is only impossible if you have closed manifold data to start with.

Lisa


At 05:40 PM 7/30/2002, R T wrote:


>Hello all,
>I use vtkTriangleFilter to get a triangular mesh.
>when I traverse the mesh and observe the Neigboring Cells
>with GetPointCells(PointID),  a few times
>I am getting just 2 Cells that share
>that PointID.
>with Triangles it's impossible: is it a bug?
>or how to rebuild the mesh/or the Cell links to guarantee at least 3 
>Triangles sharing a PointID.
>
>The pipeline is following
>vtkImageData ->vtkContourFilter->
>->vtkConnectivityFilter->vtkTriangleFilter->vtkPolyDataMapper
>
>Thanks in advance.
>--Roma
>
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