[vtkusers] (constrained) delaunay2D issue

[Malcolm Drummond]

Hi Sebastien

I've been using the GLU tesselator on mining layouts - see attached picture. I have a filter vtkGLUTesselator filter that extends the tesselator filter that is provided with hybrid. Holes, concavity etc are not a problem. I can mail you source code and some demo scripts if you like.

Malcolm Drummond
GeoVision cc

----- Original Message ----- 
  From: Sebastien MARAUX 
  To: vtkusers at public.kitware.com 
  Sent: Thursday, March 13, 2003 4:23 PM
  Subject: [vtkusers] (constrained) delaunay2D issue


  Hello

  I am using Delaunay2D for triangulating polygons 
  (representing dB levels around airports).

  I prefer this way to tesselate method as it can deal with 
  holes.

  For a special dB level, I can have several polygons defining islands and holes (depending on polygon orientation).

  So I set the polydata as input and as source, so that holes are taken off the object.

  1. there is an issue using this method with most of my 
  polygons : I can obtain "wrong" triangles being holes instead 
  of filled (see enclosed) How can I fix it ?

  2. Is there other ways of dealing with holes, based on 
  tesselate, which would be faster than  this delaunay 
  method?

  Thank you in advance

  Sebastien MARAUX
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