Hi, <BR>I never tried it, but vtkSurfaceReconstructionFilter might be one way, but be a little bit of overkill if it is a convex shape like a normal sphere ......<BR>Kind regards,<BR>Bjoern<BR><BR>----- Ursprüngliche Nachricht -----<BR>Von: Doug Hackworth <doug.hackworth@vanderbilt.edu><BR>Datum: Freitag, 17. Oktober 2008, 16:39<BR>Betreff: [vtkusers] Delaunay surface triangulation in 3D<BR>An: vtkusers@vtk.org<BR><BR>> <BR>> Greetings. I have a set of N points that reside on the <BR>> surface of a <BR>> sphere, and I'd like to create a triangular (not tetrahedral) <BR>> mesh <BR>> between these points via Delaunay triangulation. Using <BR>> vtkDelaunay2D is <BR>> out because it does a different thing (ignoring the Z-coordinate <BR>> during <BR>> its triangulation). And using vtkDelaunay3D only does part <BR>> of the right <BR>> thing -- it appears to triangulate the surface points nicely, <BR>> but also <BR>> creates (as its primary function) a tetrahedral mesh among all <BR>> the <BR>> points in 3 dimensions.<BR>> <BR>> How can I get a triangulated surface? Just to be clear on <BR>> what I want, <BR>> the end result should be a hollow volume of triangles, rather <BR>> like a <BR>> geodesic dome. That make sense?<BR>> <BR>> It seems as if using vtkDelaunay3D and then extracting the <BR>> surface <BR>> triangles only could be a promising course of action, but I have <BR>> no idea <BR>> how to do this (I'm also not sure that it's guaranteed to <BR>> produce the <BR>> right result). Can someone offer some guidance on <BR>> this? Is there an <BR>> alternative method that would be better? Please, offer me <BR>> your wisdom. :-)<BR>> <BR>> Thanks,<BR>> Doug<BR>> <BR>> _______________________________________________<BR>> This is the private VTK discussion list.<BR>> Please keep messages on-topic. Check the FAQ at: <BR>> http://www.vtk.org/Wiki/VTK_FAQFollow this link to <BR>> subscribe/unsubscribe:http://www.vtk.org/mailman/listinfo/vtkusers<BR><BR>------------------------------------------------------------------------- <BR>Dr. Bjoern Zehner <BR>UFZ Centre for Environmental Research Leipzig-Halle <BR>Permoserstrasse 15 <BR>04318 Leipzig <BR>Germany <BR>http://www.ufz.de/index.php?en=5673 <BR>Tel: ++49 (341) 235 1979 <BR>Fax: ++49 (341) 235 1939<BR><BR>