<DIV>Hi Randall,</DIV>
<DIV> </DIV>
<DIV>Try vtkDecimate or vtkDecimatePro to simplify the mesh.</DIV>
<DIV> </DIV>
<DIV>Qiang<BR><BR><B><I>Randall Hand <randall.hand@gmail.com></I></B> 写道：</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I have a mesh that contains something on the order of ~1.5billion triangles. It's simply too large to manage, and frankly most of it is redundant. It's a map of a city, so it contains alot of co-planar triangles that create walls of buildings or streets. So ideally, I think, I want a Decimation filter that combines triangles sharing an edge with similar or equivalent normals. Does such a filter exist?<BR><BR>Also, can someone shed on light on how to do "streaming data" with this? Obviously, it's going to be difficult getting this all into memory at once. I'm currently using a vtkDataSetReader to read it in (VTK Legacy Format), which takes approximately an hour & 8gig of RAM to read the file.. (I've since switched to a vtkPolyDataReader, but haven't been able to re-run it yet).<BR><BR>-- <BR>Randall Hand<BR>Visualization Scientist<BR>DOD
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