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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi David, sorry for that. I meant to reply to the list but just
pressed “Reply” button in Outlook.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It is a good idea to add such a function to vtkPolyData. I also
noticed another weird thing. When I used BuildLinks() to create the links
for random access to cells, I have to used DeleteCells() to release the memory
before I called BuildLinks() second time. Just wonder why it is not
DeleteLinks().<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Jinzhong<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>On Behalf Of </b>David
Doria<br>
<b>Sent:</b> Friday, August 14, 2009 6:32 AM<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Get neighboring points of a point in a polydata<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>On Thu, Aug 13, 2009 at 10:41 AM, Yang, Jinzhong <<a
href="mailto:jinzhong76@gmail.com">jinzhong76@gmail.com</a>> wrote:<o:p></o:p></p>
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<p><span style='font-size:11.0pt;color:#1F497D'>Didn’t you check the
methods GetPointCells() and Get CellPoints()? If the cells are simply the
triangles or lines, it is quite easy to do that. If the cells are more
complicated, you may need some additional processing.</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'>-Jinzhong</span><o:p></o:p></p>
<p><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
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<p class=MsoNormal>Jinzhong - thanks for the reply, but please reply to the
list rather than just me so everyone can share the discussion :)<br>
<br>
I see, so do something like this:<br>
<br>
GetPointNeighbors()<br>
---------------------<br>
cells = GetPointCells(queryPoint)<br>
for each cell in cells<br>
points = GetCellPoints()<br>
for each point in points<br>
IsEdge(queryPoint, point)<br>
<br>
Can that be added as function to vtkPolyData? It seems like this would be a
very common operation.<br>
<br clear=all>
Thanks,<br>
<br>
David<br>
<o:p></o:p></p>
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