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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">It is a little hard to tell exactly what you are trying to do, but it looks like you are trying to create a circular patch in the y-z plane. I tried running the code you
provided with OCC geometry engine, and I got no errors.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Some things you could try would be giving more than two edges and linking edges better in a loop, i.e., making sure that the end vertex of one edge is the beginning vertex
of the next. I planned to try these, but my only successful build of CGM with acis so far is a cmake build, and I’m still a novice in the cmake build system, so I didn’t get far enough to reproduce the problem. What version are you using?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">-Evan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cgma-dev-bounces@mcs.anl.gov [mailto:cgma-dev-bounces@mcs.anl.gov]
<b>On Behalf Of </b>Andrew Davis<br>
<b>Sent:</b> Monday, July 27, 2015 10:01 AM<br>
<b>To:</b> Patrick Shriwise<br>
<b>Cc:</b> Andrew Davis; cgma-dev@mcs.anl.gov<br>
<b>Subject:</b> Re: [cgma-dev] Why can't I create surfaces from curves<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Patrick<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Irrespective of whether or not I use planar, best fit, sphere, its the same error message over and over again.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Andy<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sat, Jul 25, 2015 at 8:00 AM, Patrick Shriwise <<a href="mailto:shriwise@wisc.edu" target="_blank">shriwise@wisc.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hey Andy, <br>
<br>
The error message seems to indicate it's trying to make a surface which isn't planar.. maybe thats a good starting point? Are there other flags to hand that function by chance?<br>
<br>
Cheers, <br>
<br>
Patrick <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 07/23/2015 02:34 PM, Andrew Davis wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi Guys <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have the following function that I've added to my version of iGeom,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">ITAPS_API void<o:p></o:p></p>
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<p class="MsoNormal">iGeom_createSurface2(iGeom_Instance instance,<o:p></o:p></p>
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<p class="MsoNormal"> /*in*/ iBase_EntityHandle *input_curves,<o:p></o:p></p>
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<p class="MsoNormal"> /*in*/ int num_curves,<o:p></o:p></p>
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<p class="MsoNormal"> /*out*/ iBase_EntityHandle *geom_entity,<o:p></o:p></p>
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<p class="MsoNormal"> int* err)<o:p></o:p></p>
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<p class="MsoNormal">{<o:p></o:p></p>
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<p class="MsoNormal"> CubitVector p1(0, 0, 5);<o:p></o:p></p>
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<p class="MsoNormal"> RefVertex* v1 = gmt->make_RefVertex(p1);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> CubitVector p2(0, 0, -5);<o:p></o:p></p>
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<p class="MsoNormal"> RefVertex* v2 = gmt->make_RefVertex(p2);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> CubitVector p3(0, 5, 0);<o:p></o:p></p>
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<p class="MsoNormal"> RefVertex* v3 = gmt->make_RefVertex(p3);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> CubitVector p4(0, -5, 0);<o:p></o:p></p>
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<p class="MsoNormal"> RefVertex* v4 = gmt->make_RefVertex(p4);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> RefEdge* e1 = gmt->make_RefEdge(ARC_CURVE_TYPE,v1,v2,&p3);<o:p></o:p></p>
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<p class="MsoNormal"> RefEdge* e2 = gmt->make_RefEdge(ARC_CURVE_TYPE,v1,v2,&p4);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> DLIList<RefEdge*> curves;<o:p></o:p></p>
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<p class="MsoNormal"> curves.insert(e1);<o:p></o:p></p>
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<p class="MsoNormal"> curves.insert(e2);<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> RefFace* tmp_surface = gmt->make_RefFace(PLANE_SURFACE_TYPE,<o:p></o:p></p>
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<p class="MsoNormal"> curves,<o:p></o:p></p>
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<p class="MsoNormal"> false);<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> *geom_entity = reinterpret_cast<iBase_EntityHandle>(tmp_surface); <o:p></o:p></p>
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<p class="MsoNormal"> RETURN ((tmp_surface ? iBase_SUCCESS : iBase_FAILURE));<o:p></o:p></p>
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<p class="MsoNormal">}<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">When I run this, I can sucessfully create the vertices, and create curves from those verts using make_RefEdge. When I try to create a surface from those two ref edges I get the following error.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">WARNING: In AcisGeometryEngine::make_FACE<o:p></o:p></p>
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<p class="MsoNormal"> At this time, cannot make a FACE that isn't planar or best fit.<o:p></o:p></p>
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<p class="MsoNormal">ERROR: In AcisModifyEngine::make_Surface<o:p></o:p></p>
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<p class="MsoNormal"> Cannot make Surface object.<o:p></o:p></p>
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<p class="MsoNormal">ERROR: Couldn't make new RefFace.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If I save the file as acis and examine the results in Cubit, they appear as they should (minus the surface). I can, in Cubit, make surface then, sweep and do all the operations that I want to.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is there something that I', just misunderstanding about CGM / gmt that means I'm using this wrong?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Andy<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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</blockquote>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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