GL doesn't handle concave polygons and subdividing concave polygons into convex ones would add substantial overhead to the common case when none are present, so VTK and therefore ParaView do not either.<br><br>See this thread where the issue was recently discussed for ideas about how you might go about fixing the the geometry so that it is rendered well.<br>
<br><a href="http://markmail.org/message/e3fal43v6wzwkgm4">http://markmail.org/message/e3fal43v6wzwkgm4</a><br><br clear="all">David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>28 Corporate Drive<br>Clifton Park, NY 12065-8662<br>
Phone: 518-371-3971 x109<br>
<br><br><div class="gmail_quote">On Thu, Jul 1, 2010 at 4:28 AM, paul.barrere <span dir="ltr"><<a href="mailto:paul.barrere@laposte.net">paul.barrere@laposte.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<p style="margin: 0pt; padding: 0pt;" align="left"><br></p><p style="margin: 0pt; padding: 0pt;" align="left"><br></p><p style="margin: 0pt; padding: 0pt;" align="left">Hello, <br><br>I have written a vtu file with a concave polygon (see the image" concave.png" enclosed). I am surprised because the rendering in ParaView is inappropriate (the mode is "Surface").I tried the same thing with a vtp file and it was the same result. Moreover, when I try to visualize a vrml file which contains concave polygons (see the image "building.png" enclosed), I have the same problem. In a vrml viewer, the concave polygons are well rendered. Am I wrong or ParaView only treats the convex polygons ? Should I triangulate my files ? (I don't want to triangulate because people can believe that there was a physic simulation). <br>
<br>Thank you for your answers. <br><br>Paul Barrère (trainee at Cerma laboratory, France)<br></p><br><br><a href="https://compte.laposte.net/inscription/index.do?jeux=201001FOOTER" target="_blank"><img src="" style="margin: 0pt;" alt="Pieddemail"></a><a></a><br>
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