<div dir="ltr"><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">> Thanks, I will go for the ghost levels. Out of curiosity, what is this ‘marking surface vertices’? Sounds like an interesting feature for other purposes as well.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><br></span></p>It is done through the point-wise ghost array.<div><br></div><div>Best,</div><div>-berk<br><div><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><br></span></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 8, 2016 at 4:16 AM, Andreas Buykx <span dir="ltr"><<a href="mailto:A.Buykx@dianafea.com" target="_blank">A.Buykx@dianafea.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Thanks, I will go for the ghost levels. Out of curiosity, what is this ‘marking surface vertices’? Sounds like an interesting feature for other
purposes as well. <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Kind regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Andreas<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10pt;font-family:Tahoma,sans-serif">From:</span></b><span lang="EN-US" style="font-size:10pt;font-family:Tahoma,sans-serif"> Berk Geveci [mailto:<a href="mailto:berk.geveci@kitware.com" target="_blank">berk.geveci@kitware.com</a>]
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<b>Sent:</b> Thursday, July 07, 2016 1:44 PM<br>
<b>To:</b> Andreas Buykx; VTK Users</span></p><div><div class="h5"><br>
<b>Subject:</b> Re: [vtkusers] vtkMultiBlockDataSet and vtkDataSetSurfaceFilter<u></u><u></u></div></div><p></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Hi Andreas,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">You can produce as many levels as you'd like but if all you are interested is removing the internal boundaries, one level would be plenty. There is actually a way to mark the surface vertices to avoid internal surfaces but it is not a well
established/tested path so I recommend the ghost cell path for now.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Best,<u></u><u></u></p>
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<p class="MsoNormal">-berk<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Wed, Jul 6, 2016 at 2:22 AM, Andreas Buykx <<a href="mailto:A.Buykx@dianafea.com" target="_blank">A.Buykx@dianafea.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hi Berk,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Does this mean that I only need to produce one level of ghost cells? I sort of can understand
that when the ghost cells are not removed anymore…</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Kind regards,</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Andreas</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span><u></u><u></u></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10pt;font-family:Tahoma,sans-serif">From:</span></b><span lang="EN-US" style="font-size:10pt;font-family:Tahoma,sans-serif"> Berk
Geveci [mailto:<a href="mailto:berk.geveci@kitware.com" target="_blank">berk.geveci@kitware.com</a>]
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<b>Sent:</b> Monday, July 04, 2016 1:28 PM<br>
<b>To:</b> Andreas Buykx<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] vtkMultiBlockDataSet and vtkDataSetSurfaceFilter</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Hi Andreas,<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">There is a long answer but it's early in the morning so I'll go with a short one :-) Yes, normally you would check for UPDATE_NUMBER_OF_GHOST_LEVELS etc. However, this is not required.
You can always produce ghost cells even if you are not asked for it.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Best,<u></u><u></u></p>
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<p class="MsoNormal">-berk<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Jul 1, 2016 at 3:53 AM, Andreas Buykx <<a href="mailto:A.Buykx@tnodiana.com" target="_blank">A.Buykx@tnodiana.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hi,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">My finite element mesh is stored in a vtkMultiBlockDataSet. I use a vtkCompositeDataPipeline to process my algorithms.</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">Visualizing the outer surface of the mesh using vtkDataSetSurfaceFilter generates the outer surface of each block, instead of the outer surface of the entire
mesh.</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">In the source algorithm I can define ghost cells, but to know how many levels of ghost cells I have to generate I should be reading the UPDATE_NUMBER_OF_GHOST_LEVELS,
if I understand correctly. Looking at vtkDataSetSurfaceFilter it seems that it requests ghost cells only if UPDATE_NUMBER_OF_PIECES > 1. Similar code is in vtkFeatureEdges and several other algorithms that I use.</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">So it seems that I have to fool my pipeline into thinking that it processes multiple pieces, by setting UPDATE_NUMBER_OF_PIECES to >1. Is that possible at all?
Should I also set other update information, like UPDATE_PIECE_NUMBER? Where in the pipeline should I set this information? Is there an alternative way of doing this?</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US"> </span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for your advice. Kind regards,</span><u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">Andreas Buykx</span><u></u><u></u></p>
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