<div dir="ltr">Hi Gerrick,<div><br></div><div>The cutter algorithm is fairly straightforward, it just creates a new point along each edge that is intersected by the plane. Then it uses its knowledge about the connectivity of the original cells to join the new points together to create new cells.</div>
<div><br></div><div>The only problem I've ever seen with vtkCutter is the fact that its locator is limited by numerical precision: it might think two cells share an edge when in fact the edges are just very, very close to each other. But the result of this is that gaps are closed, not created.</div>
<div><br></div><div>In response to the question about whether I've ever seen vtkCutter create gaps where no gaps exist in the original data, I'd have to say no. That's not to say that it could never happen. The vtkCutter delegates the "cutting" to the Contour methods of the various cell classes, so it is possible that your data uses a cell type with a buggy Contour implementation. If that is the case, it would be good to know the details of your data so that someone can investigate, but my first suspicion is that the gaps are present in your original data.</div>
<div><br></div><div> David<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Dec 6, 2013 at 11:13 AM, Bill Lorensen <span dir="ltr"><<a href="mailto:bill.lorensen@gmail.com" target="_blank">bill.lorensen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I do not see the attachment/<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div>
<div class="h5">On Fri, Dec 6, 2013 at 12:50 PM, Gerrick Bivins <span dir="ltr"><<a href="mailto:Gerrick.Bivins@halliburton.com" target="_blank">Gerrick.Bivins@halliburton.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
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<p class="MsoNormal"><span style="color:#1f497d">I realized I sent this at a time when most people were probably offline.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Just a “BUMP” in case this got missed.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Anyone have any ideas here?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Gerrick<u></u><u></u></span></p>
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<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""> <a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a> [mailto:<a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a>]
<b>On Behalf Of </b>Gerrick Bivins<br>
<b>Sent:</b> Monday, November 25, 2013 8:33 AM<br>
<b>To:</b> '<a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a>'<br>
<b>Subject:</b> [vtkusers] vtkCutter leaves "gaps"<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Hi All,<u></u><u></u></p>
<p class="MsoNormal">I’ve run into a strange problem where with some of my datasets, vtkCutter is leaving “gaps” in the output polydata.<u></u><u></u></p>
<p class="MsoNormal">For example, if I use a plane as the implicit function the attached image shows the result.<u></u><u></u></p>
<p class="MsoNormal">Anyone seen this kind of behavior before?<u></u><u></u></p>
<p class="MsoNormal">Is there some setting on the vtkCutter that is perhaps causing this?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Gerrick<u></u><u></u></p>
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