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<TITLE>Intersecting facets, -d switch sec:u</TITLE>
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<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">When attempting to create a 3D mesh in a volume defined from a .stl surface mesh (fairly coarse, not optimal cell distribution), I receive the error below. A few questions:</FONT></SPAN></P>
<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">1) Are the intersecting faces related to the 'identical verts' warnings?</FONT></SPAN>
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<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">2) What is the -d switch and how do I use it? .. I haven't been able to find any mention of this anywhere.</FONT></SPAN>
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<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">3) Are the facet numbers listed with their geometric definition somewhere? My .stl file doesn't seem to have facet numbers, only their geometric definitions. I don't really want to count to the 6770th one if I can help it!</FONT></SPAN></P>
<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">4) What are the numbers used to describe the intersecting subfaces? Node numbers? Are they recorded in a file somewhere?</FONT></SPAN></P>
<P><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">Thanks,</FONT></SPAN>
<BR><SPAN LANG="en-au"><FONT SIZE=2 FACE="Arial">Nalini</FONT></SPAN>
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<P><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">[nalini@flightlab ~/gmsh]$ gmsh mrh90-mod5.geo -3</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Increasing process stack size (10240 kB < 16 MB)</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : 'gmsh mrh90-mod5.geo -3 ' started on Mon Nov 12 16:04:35 2007</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Reading 'mrh90-mod5.geo'</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Reading 'mrh90-mod12.stl'</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : 10542 facets</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Read 'mrh90-mod12.stl'</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Read 'mrh90-mod5.geo'</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Meshing 1D...</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Mesh 1D complete (0 s)</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Mesh</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Meshing 2D...</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Mesh 2D complete (0 s)</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Mesh</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Meshing 3D...</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Info : Meshing volume 3 (Delaunay)</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Constructing Delaunay tetrahedralization.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Delaunay seconds: 0.68</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Creating surface mesh.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Warning: Polygon 1 has two identical verts in facet 6770.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Warning: Polygon 1 has two identical verts in facet 6785.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Warning: Polygon 1 has two identical verts in facet 6790.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Warning: Polygon 1 has two identical verts in facet 6797.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Perturbing vertices.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Delaunizing segments.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Constraining facets.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Error: Invalid PLC.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> Two subfaces (2969, 2968, 5427) and (10977, 12303, 12831)</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> are found intersecting each other.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New"> Hint: Use -d switch to find all intersecting facets.</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">terminate called after throwing an instance of 'int'</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Abort</FONT></SPAN>
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