[vtkusers] Delete overlayed polygones defined by same points

Dominik Szczerba dominik at itis.ethz.ch
Tue Oct 28 16:23:40 EDT 2008


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I am not sure if CleanGrid family of VTK/PV filters will handle such cases.

A simplest thing I would try is to first re-orient all the elements such
that node ids are increasing in each cell. Then std::sort(), then
std::unique(), then re-orient for outward normals etc.

Dominik

Charles Monty Burns wrote:
> Hello,
> 
> I used the CleanPolyDataFilter to remove some degenerate cells in my
> mesh. The result is, that some cells are defined by the same point with
> another order. For example:
> 
> cell 0: [0, 1, 2]
> cell 1: [1, 2, 0]
> 
> What filter could remove that overlays?
> 
> Greetings
> 
> 
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- --
Dominik Szczerba, Ph.D.
Computational Physics Group
Foundation for Research
on Information Technologies in Society
http://www.itis.ethz.ch
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