[vtkusers] vtkDataSetSurfaceFilter 1.30 - 1.35 : undesired side effects with 2-d cells on 3-d faces

[John Platt]

Hi users,

 

The changes to vtkDataSetSurfaceFilter from 1.30 to 1.35 have had some
undesired side effects with the display of quads attached to hex faces
(quads coincident with faces using the same point id's). In version 1.30
it appears that all the 2-d cells were drawn after the 3-d cells so the
quads were never hidden by the hex's. In version 1.35 this discipline
appears to have changed with some of the 2-d cells shown but others
obscured by the 3-d cells.

 

Does anybody know how I can arrange to draw the faces of all the 3-d
cells first, followed by all the 2-d cells? Should this be the
responsibility of the application developer or VTK?

 

For those who are interested, this is important for checking FE-models
where boundary elements are connected to finite elements or where there
is a transition from 3-d to 2-d elements.

 

Thanks in advance for your comments and suggestions.

 

John.

 

 

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