<div dir="ltr"><div>Have a look at vtkvmtkPolyDataScissors in <a href="http://www.vmtk.org">www.vmtk.org</a><br><br></div>good luck!<br>sebastian<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jul 18, 2013 at 10:42 AM, Martin Vymazal <span dir="ltr"><<a href="mailto:martin.vymazal@vki.ac.be" target="_blank">martin.vymazal@vki.ac.be</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div style="font-family:'Roboto';font-size:9pt;font-weight:400;font-style:normal">
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Hello Alex,</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">thank you for your reply. My surface is a 3D surface, but I want to split it into several patches given by this line(s). That's why I'm speaking about cutting by line and not plane/box/sphere etc. The (poly)line is already given as a sequence of starting and ending points of several straight segments. Basically all I'm asking is whether vtk could do proper modification to the connectivity tables because the cut is going to modify some existing and introduce new triangles. From your answer I have the feeling that this is unfortunately not possible.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Best regards,</p><span class="HOEnZb"><font color="#888888">
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> Martin Vymazal</p></font></span><div><div class="h5">
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">On Wednesday 17 of July 2013 14:36:19 Alex Malyushytskyy wrote:<br></p>
<p style="margin-top:12px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px">Cutter will change the dimensions of the cells when Clipping does not..<br>Assuming you work with polydata you should check <a href="http://www.vtk.org/doc/nightly/html/classvtkClipPolyData.html" target="_blank"><span style="text-decoration:underline;color:#1a1a1a">vtkClipPolyData</span></a><br>
</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px"><a href="http://www.vtk.org/doc/nightly/html/classvtkClipPolyData.html" target="_blank"><span style="text-decoration:underline;color:#1a1a1a">http://www.vtk.org/doc/nightly/html/classvtkClipPolyData.html</span></a><br>
It is important to remember that in VTK you are always dealing with 3d data<br></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px">so you define plans not line as a clipping function.<br><br></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px">Regards,<br></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px"> Alex<br></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px"><br><br></p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:40px;margin-right:40px;text-indent:0px">On Wed, Jul 17, 2013 at 3:46 AM, Martin Vymazal <<a href="mailto:martin.vymazal@vki.ac.be" target="_blank"><span style="text-decoration:underline;color:#1a1a1a">martin.vymazal@vki.ac.be</span></a>> wrote:<br>
</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:45px;margin-right:40px;text-indent:0px">Hello,<br><br> I would like to ask if I can slice elements in triangulation. Suppose my<br>input is a line on a triangulated surface (given as a sequence of vertex pairs<br>
indicating which mesh edges the line should cut, for example), I would like to<br>split the triangles that the line passes through, eventually introducing new<br>triangles in the mesh. Apparently there is the class vtkCutter, but I'm not<br>
sure that that's what should be used. Could you please point me to some<br>examples if there are any? How should I feed my input line to vtk? Create a<br>polyline perhaps?<br><br>Thank you very much,<br><br> Martin Vymazal<br>
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