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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi again.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>I have solved it using a vtkClipPolyData (using vtkSphere as clipping function) filter after the triangle stripper filter.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Robert.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ES'>De:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ES'> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>En nombre de </b>Roberto Garrido<br><b>Enviado el:</b> miércoles, 27 de febrero de 2013 13:42<br><b>Para:</b> vtkusers@vtk.org<br><b>Asunto:</b> [vtkusers] [vtk-users] Extracting a section polyData<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Hi there!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>We have a scene with a non-regular volume. We want to highlight a section of it, using a plane at a given height. The approach we are using is as follows:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Create a vtkCutter<u><o:p></o:p></u></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Set a vtkPlane as cut function of the vtkCutter<u><o:p></o:p></u></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Perform the cut filter and connect the results with a triangle stripper filter<u><o:p></o:p></u></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Connect the results with a vtkPolyDataMapper, and the assign the mapper to the actor<u><o:p></o:p></u></span></p><p class=MsoNormal><u><span lang=EN-US><o:p><span style='text-decoration:none'> </span></o:p></span></u></p><p class=MsoNormal><span lang=EN-US>Using this approach, we have managed to display the highlighted section of the volume, but the results are not the ones we desired, and that’s because the volume is so irregular that the above pseudo-code computes a lot of sections. And we only want one. Actually, we only want to use the geometry that is at a known distance of a given point. We already have the point and the distance, but we don’t know how to proceed now.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Any idea?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks in advance,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Robert.<o:p></o:p></span></p></div></body></html>