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<DIV><FONT face=Arial size=2>Hi Sebastien</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>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.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Malcolm Drummond</FONT></DIV>
<DIV><FONT face=Arial size=2>GeoVision cc</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=maraux@ondim.fr href="mailto:maraux@ondim.fr">Sebastien MARAUX</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=vtkusers@public.kitware.com
href="mailto:vtkusers@public.kitware.com">vtkusers@public.kitware.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 13, 2003 4:23
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [vtkusers] (constrained)
delaunay2D issue</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hello</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am using Delaunay2D for triangulating polygons
</FONT></DIV>
<DIV><FONT face=Arial size=2>(representing dB levels around
airports).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I prefer this way to tesselate method as it can
deal with </FONT></DIV>
<DIV><FONT face=Arial size=2>holes.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For a special dB level, I can have several
polygons defining islands and holes (depending on polygon
orientation).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So I set the polydata as input and as source, so
that holes are taken off the object.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1. there is an issue using this method with most
of my </FONT></DIV>
<DIV><FONT face=Arial size=2>polygons : I can obtain "wrong" triangles being
holes instead </FONT></DIV>
<DIV><FONT face=Arial size=2>of filled (see enclosed) How can I fix it
?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2. Is there other ways of dealing with holes,
based on </FONT></DIV>
<DIV><FONT face=Arial size=2>tesselate, which would be faster than this
delaunay </FONT></DIV>
<DIV><FONT face=Arial size=2>method?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thank you in advance</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sebastien MARAUX</FONT></DIV>
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