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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I just recently tried to switch from the built-in Factory to OpenCascade to use Boolean operations.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, all of my tests involving more than one surface crash after the switch with the same error:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OpenCascade wire or line loop with tag 2 already exists<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The same error occurs for all other surfaces except the first.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I added a simple brick geometry example. In case I comment out “SetFactory("OpenCASCADE"); “ everything works fine. If I use the line, the errors occur.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Can someone please point out what causes these errors and how I can fix them?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Martin Rädel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:dimgray;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:dimgray;mso-fareast-language:DE">————————————————————————</span><span style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE">Deutsches Zentrum für Luft- und Raumfahrt</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE"> e.V.
(DLR)</span><span style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:16.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE">German Aerospace Center</span><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:16.0pt"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE">Institute of Composite Structures and Adaptive Systems | Structural Mechanics | Lilienthalplatz
7 | 38108 Braunschweig | Germany</span><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:dimgray;mso-fareast-language:DE"> </span><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:dimgray;mso-fareast-language:DE">Dipl.-Ing. </span><b><span lang="EN-US" style="font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE">Martin Rädel</span></b><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:16.0pt"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:dimgray;mso-fareast-language:DE">Telephone +49 (0)531 295-2048 | Telefax +49 (0)531 295-2232 |</span><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";mso-fareast-language:DE"> <a href="mailto:martin.raedel@dlr.de"><span style="color:#005AA5">martin.raedel@dlr.de</span></a></span><span lang="EN-US" style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:16.0pt"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";mso-fareast-language:DE"><a href="http://www.dlr.de/"><span style="color:#005AA5">www.DLR.de</span></a></span><span style="mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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