[vtkusers] How to extract the contour of an unstructured grid ?

[Mathieu Malaterre]

Hummel, Jerome wrote:
> Sorry if this is an easy question but it is possible to do to this ?
> I have an unstructured grid and I only would like to see the skin of it and more
> precisely the wireframe of the skin.
> I want to hide any cells that are within the grid and only keep the bounds.
> To keep it simple lets say I have 4 triangles sharing the same vertex and
> ordered as a square.
> Te filter should output a square shape.

Salut Jerome,

   You can do:

GeometryFilter -> FeatureEdges -> PolyDataMapper

or simply

GeometryFilter -> ExtractEdges -> PolyDataMapper

HTH
-Mathieu