<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Hi Jeffrey,</div><div class=""><br class=""></div><div class="">You may want to check out <a href="https://www.vtk.org/doc/nightly/html/classvtkBooleanOperationPolyDataFilter.html" class="">vtkBooleanOperationPolyDataFilter</a>. It sounds like it may have the functionality you desire.</div><div class=""><br class=""></div><div class="">Sincerely,</div><div class="">T.J.</div><br class=""><div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Thomas J. Corona, Ph.D.<br class="">Kitware, Inc.<br class="">Senior R&D Engineer<br class="">21 Corporate Drive<br class="">Clifton Park, NY 12065-8662<br class="">Phone: 518-881-4443</div></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On Nov 20, 2017, at 3:18 PM, Mauldin, Jeffrey A. <<a href="mailto:jamauld@sandia.gov" class="">jamauld@sandia.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I have a need to do a Boolean intersection of two unstructured multiblock datasets. It so happens in this case that the underlying element sets are polygonal meshes, so in this particular case I could also do what I want with a Boolean intersection of two polygonal meshes. To be (hopefully) redundant, I have two meshes which share some points and cells and each of which have other points and cells which are not shared. I would like a new mesh which consists of all the points and cells that are in both of these meshes. I need this to work properly in parallel.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I know enough to create a python-based filter (python programmable filter) to create this operation, but are there already existing Boolean mesh operations, and if not would those be a useful thing to add?<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; 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