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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal">I’m trying to allow my user to define an ROI of an unstructured grid to display the cells.<o:p></o:p></p>
<p class="MsoNormal">One thing to note here is that is that my datasets don’t have point data just cell data.<o:p></o:p></p>
<p class="MsoNormal">Not sure that matters but I see a lot of checking for point data in the “clip” classes.<o:p></o:p></p>
<p class="MsoNormal">Anyway…<o:p></o:p></p>
<p class="MsoNormal">Previously, I was using vtkExtractGeometry with a vtkBox and it worked fine.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now the request is to “cut” the cells instead of extracting entire cells.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve tried vtkClipPolyData, vtkBoxClipDataSet and vtkClipDataSet.<o:p></o:p></p>
<p class="MsoNormal">These all gave various results from no output to something “crimped”.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">vtkClipDataSet gave the closest to what I want but I can’t get it to cut the cells<o:p></o:p></p>
<p class="MsoNormal">in my dataset. Instead it looks like it attempts to smooth them out. This is the behavior<o:p></o:p></p>
<p class="MsoNormal">using vtkBox and vtkPlanes as the implicit function. <o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:Wingdings">L</span><o:p></o:p></p>
<p class="MsoNormal"><img width="716" height="317" id="Picture_x0020_2" src="cid:image002.jpg@01D062FD.8689A540"><o:p></o:p></p>
<p class="MsoNormal">The behavior that I really want I can replicate using a single vtkPlane as my implicit function.<o:p></o:p></p>
<p class="MsoNormal"><img width="703" height="347" id="Picture_x0020_1" src="cid:image006.jpg@01D062FD.8689A540"><o:p></o:p></p>
<p class="MsoNormal">All of this I’ve replicated in paraview so 2 questions<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Is there some more details on the differences in functionality of vtkClipPolyData,vtkBoxClipDataSet and vtkClipDataSet?<br>
I get that vtkClipPolyData is for vtkPolyData input so I’m not looking for that. I’m wondering why I couldn’t get this<br>
to work for my dataset.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Why does the output vary based on defining multiple planes via a box (vtkBox,vtkPlanes) or a single vtkPlane as the implicit function?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for any input here. <o:p></o:p></p>
<p class="MsoNormal">Gerrick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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