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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Fred,<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'>Thanks a lot for your kind help. The method you told me works
fine with cutter, but not with clipper. I guess it may be due to the triangles in
the clipper output. The output of cutter are lines, so it is possible to obtain
a polyline after the stripper. While the output of clipper are mostly triangles
(no lines connected to get a polygon on the cutting plane), and the stripper
output are trianglestrips.<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'>Right now I just append the filled cut-plane to the clipped
output to form a closed surface – not sure if it is really closed, but at
least it looks like. Anyway, this has solved my problem.<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'>Thanks again!<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-Jinzhong<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'> Frederic Danesi
[mailto:frederic.danesi@dinccs.com] <br>
<b>Sent:</b> Tuesday, June 23, 2009 2:21 AM<br>
<b>To:</b> 'Yang, Jinzhong'; vtkusers@vtk.org<br>
<b>Subject:</b> RE: [vtkusers] Test<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Indeed, there is a simple way using a cutter (it may also work
with a clipper). Here is a simple Java example:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>vtkCutter cutEdges = new vtkCutter();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutEdges.SetInput(your_object_to_cut);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutEdges.SetCutFunction(your_cutting_plane);
/returns the intersection edges<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>vtkStripper cutStrips = new vtkStripper();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutStrips.SetInput(cutEdges.GetOutput());<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutStrips.Update(); <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>vtkPolyData cutPoly = new vtkPolyData();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutPoly.SetPoints(cutStrips.GetOutput().GetPoints());<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>cutPoly.SetPolys(cutStrips.GetOutput().GetLines());
<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif"'>vtkTriangleFilter fillTriangles = new vtkTriangleFilter();<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif"'>fillTriangles.SetInput(cutPoly);
</span><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'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>you will obtain a filled plane …<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This example is described in the VTK books
(‘clipcow’ example).<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'>HTH,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fred.<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>
<div>
<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 lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cordialement,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>F.Danesi<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-- <o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Responsable Développement Informatique et Travail Collaboratif<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Département DINCCS (Département Ingénierie Numérique, Conception
Collaborative et Simulation)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>MICADO / DINCCS<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Pôle de Haute Technologie, BP 90005<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>08005 Charleville-Mézières Cedex<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Tel. : +33 (0) 3.24.41.69.55 / +33 (0) 6.62.76.13.32<o:p></o:p></span></p>
<p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Email : <a href="mailto:frederic.danesi@dinccs.com">frederic.danesi@dinccs.com</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Web : <a href="http://www.afmicado.com">www.afmicado.com</a> / <a
href="http://www.dinccs.com">www.dinccs.com</a><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span
lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>De la part de</b>
Yang, Jinzhong<br>
<b>Envoyé :</b> mardi 23 juin 2009 00:44<br>
<b>À :</b> vtkusers@vtk.org<br>
<b>Objet :</b> Re: [vtkusers] Test<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=FR><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thank you all for your reply. So it works, great! :)<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'>Here is my question…<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'>I have an enclosed surface (in vtkPolyData format) and I use
vtkClipPolyData to clip the surface in a smaller volume. After the clip, I get
a surface that is not closed – it becomes open at the cutting plane. I
wonder if there is any simple method in VTK to make the new surface closed
again – maybe just put some points on the cutting plane and compose some
triangular cells.<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'>Here is the source code that I used to clip the surface…<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'>roi_start[3] is the x,y,z values of the starting point of ROI,
roi_end[3] are the x,y,z values of the ending point of ROI.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>meshProcessor->GetOutputPort() is an enclosed surface.<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:9.0pt;font-family:"Courier New";
color:blue'> double</span><span style='font-size:9.0pt;font-family:"Courier New"'>
roi_start[<span style='color:#FF8040'>3</span>], roi_end[<span
style='color:#FF8040'>3</span>];<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> vtkPlanes* BoundingBox = vtkPlanes::New();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> BoundingBox->SetBounds(roi_start[<span
style='color:#FF8040'>0</span>], roi_end[<span style='color:#FF8040'>0</span>],
roi_start[<span style='color:#FF8040'>1</span>], roi_end[<span
style='color:#FF8040'>1</span>], roi_start[<span style='color:#FF8040'>2</span>],
roi_end[<span style='color:#FF8040'>2</span>]);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New";color:green'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> vtkClipPolyData * clipper =
vtkClipPolyData::New();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'>
clipper->SetInputConnection(meshProcessor->GetOutputPort());<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> clipper->SetClipFunction(BoundingBox);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> clipper->InsideOutOn();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;
font-family:"Courier New"'> clipper->Update();<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'>Thanks,<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>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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> Monday, June 22, 2009 5:05 PM<br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Test<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>On Mon, Jun 22, 2009 at 5:48 PM, Yang, Jinzhong <<a
href="mailto:jinzhong76@gmail.com">jinzhong76@gmail.com</a>> wrote:<o:p></o:p></p>
<div>
<p><span style='font-family:"Calibri","sans-serif"'>Test if I can send an email
to the mailing list. I failed to send my mail to the list for several times,
but I did</span> <span style='font-family:"Calibri","sans-serif"'>see my email
on the website.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Yep, its working.<br>
<br clear=all>
Thanks,<br>
<br>
David <o:p></o:p></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p><span lang=FR style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Analyse
effectuée par AVG - www.avg.fr<br>
Version: 8.5.374 / Base de données virale: 270.12.85/2193 - Date: 06/21/09
20:02:00</span><span lang=FR><o:p></o:p></span></p>
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