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<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2>I have a body composed of different elements. Each
element represents some finite volume enclosed by a closed surface. I need to
associate some attributes to each element (volumetric properties, say refractive
index). vtkPolyData satisfies all my needs for representing surfaces. My
elements will be arbitrary in shape and this is where I have a problem. There
are only a few volume primitives/cells defined in VTK. Different elements may or
may not be touching each other. I will like to use vtkOBBTree for raycasting
within the body and I need one vtkPolyData to represent entire
body.</FONT></DIV>
<DIV><FONT face=Arial size=2><BR>So I thought of defining a volumetric cell
enclosed by arbitrary closed surface.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Is this possible and Will it work with OBB
tree?<BR>If the answer to both is yes, what steps I will have to take to
implement this new cell type?<BR>If not, are there some
alternatives?</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>Any suggestions will be greatly appreciated.</DIV>
<DIV> </DIV>
<DIV>Vidyadhar</FONT></DIV></BODY></HTML>