<html><div style='background-color:'><DIV>Hi,</DIV>
<DIV> </DIV>
<DIV>1)</DIV>
<DIV>I'm confused with how they have described the ordering of the nodes in the vtkQuadraticTetra:</DIV>
<DIV>It says:</DIV>
<DIV>" The ordering of the ten points defining the cell is point ids (0-3,4-9) where ids 0-3 are the four tetra vertices; and point ids 4-9 are the midedge nodes between (0,1), (1,2), (2,3), (3,0), (0,3), (1,3), and (2,3). "</DIV>
<DIV> </DIV>
<DIV>First of all, there are onlly 6 edges in a tetra - so why are there 7 midedge nodes? And what does it mean to have midedge nodes at both (3,0) and (0,3), and they have (2,3) twice as well ??</DIV>
<DIV> </DIV>
<DIV>2)</DIV>
<DIV>I am dealing with quadratic tetras.. Any suggestions whether it is safe to use at this point? (I think its been out for a year now)..</DIV>
<DIV>How well does it work with the vtkCellLocator and vtkOBB ?? Does anyone have any experience using this?<BR><BR>Thanks for all your help</DIV>
<DIV> </DIV>
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