Well, is your vtkPlane Axis Aligned? If it is, then try looking into the vtkExtractVOI filter, which will return a vtkStructuredPoints for you.<br><br>If the plane is arbitrarily positioned in space, then you need to think about what you want to do with all the "clipped" cells along the edge. That's why the result is an vtkUnstructuredGrid, because of the prisms, triangles, and tetrahedra that occur along angular cuts. You would need to find a way to return this to a vtkStructuredPoints, probably with a vtkProbeFilter & a blank vtkImageData (vtkStructuredPoints) of the desired size.. But this will be
<span style="font-weight: bold;">extremely</span> slow and wasteful of memory. Best to just use the vtkUnstructuredGrid as-is :)<br><br><div><span class="gmail_quote">On 2/10/06, <b class="gmail_sendername">Rhys Thomas</b>
<<a href="mailto:rgt@informatics.bangor.ac.uk">rgt@informatics.bangor.ac.uk</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello all,<br><br> I was wondering if anyone could provide some hints on the following<br>problem: I wish to clip an instance of/ vtkStructuredPoints/ using a<br>/vtkPlane/. I want the output to be an instance of /vtkStructuredPoints/
<br>so that I can insert it into my graphics pipeline in place of another<br>instance of /vtkStructuredPoints/ because I am performing other<br>operations on the data (changing opacity of certain voxels, contrast<br>stretching). I am currently using /vtkRenderer::AddVolume /to add a
<br>/vtkVolume/ to the pipeline. I have tried variations of /vtkCutter,<br>vtkClipVolume /and/ vtkProbeFilter, /but with disappointing results.<br>Does anyone have any suggestions as to the quickest (i.e. least<br>processor intensive) solution to this problem?
<br><br>Thanks<br><br>Rhys<br>_______________________________________________<br>This is the private VTK discussion list.<br>Please keep messages on-topic. Check the FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ
</a><br>Follow this link to subscribe/unsubscribe:<br><a href="http://www.vtk.org/mailman/listinfo/vtkusers">http://www.vtk.org/mailman/listinfo/vtkusers</a><br></blockquote></div><br><br clear="all"><br>-- <br>Randall Hand
<br>Visualization Scientist, <br>ERDC-MSRC Vicksburg, MS<br>Homepage: <a href="http://www.yeraze.com">http://www.yeraze.com</a>