https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17839#M17193 Nope - thats how ArchiCAD does things. Its triangulation of geometry on both Import &amp; Export has always been terrible IMO, particularly the former. <BR /> <BR /> We have a library of objects in C4D/3DS formats as they are the only real way to get decent looking objects - very little of what is in the ArchiCAD libraries ever gets used. It would have to have one of the ugliest collection of furniture, applicances, etc I have ever seen. However bringing 3DS files into ArchiCAD never works well, there is always horrible triangulation, unwanted lines, errors, etc. Anyway I have complained about this at length many times in the past so i will shut up now ...<BR /> <BR /> As for your problem - if you are using the ArchiCAD Exchange plugin then I assume you are simply exporting the model to C4D to render?<BR /> <BR /> These lines should not be a problem then .. they are just polygon edges and will not appear in your renders. I don't know why AC manages to turn a single flat surface into a bunch of triangles, but i've never had a problem with them when rendering. <BR /> <BR /> They do make working with surfaces in C4D a bit of a pain though Wed, 28 Mar 2007 23:43:53 GMT owen 2007-03-28T23:43:53Z https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17837#M17191 <DIV class="actalk-migrated-content"><T>I've used the Archicad to C4D exchange plugin.<BR /> <BR /> If you look at the picture you'll see the white lines that indicate unnecessary triangulation that's being generated.<BR /> <BR /> I don't suppose anyone has a way to sort this out<BR /> <BR /> ???<BR /> <BR /> TIA<BR /> <BR /> Adri</T></DIV><BR /><IMG src="http://community.graphisoft.com/t5/image/serverpage/image-id/67585iCDE13C355A4A81AF/image-size/large?v=v2&amp;px=999" border="0" alt="Untitled-1.jpg" title="Untitled-1.jpg" /> Thu, 11 May 2023 11:26:36 GMT https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17837#M17191 Anonymous 2023-05-11T11:26:36Z https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17838#M17192 Oh, and it isn't just meshes that do it...<BR /> <BR /> See attached file.<BR /> <BR /> TIA<BR /> <BR /> Adri<BR /><IMG src="https://community.graphisoft.com/t5/image/serverpage/image-id/11466iB147D803C8871064/image-size/large?v=v2&amp;px=999" border="0" alt="Untitled-1.jpg" title="Untitled-1.jpg" /> Wed, 28 Mar 2007 22:06:48 GMT https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17838#M17192 Anonymous 2007-03-28T22:06:48Z https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17839#M17193 Nope - thats how ArchiCAD does things. Its triangulation of geometry on both Import &amp; Export has always been terrible IMO, particularly the former. <BR /> <BR /> We have a library of objects in C4D/3DS formats as they are the only real way to get decent looking objects - very little of what is in the ArchiCAD libraries ever gets used. It would have to have one of the ugliest collection of furniture, applicances, etc I have ever seen. However bringing 3DS files into ArchiCAD never works well, there is always horrible triangulation, unwanted lines, errors, etc. Anyway I have complained about this at length many times in the past so i will shut up now ...<BR /> <BR /> As for your problem - if you are using the ArchiCAD Exchange plugin then I assume you are simply exporting the model to C4D to render?<BR /> <BR /> These lines should not be a problem then .. they are just polygon edges and will not appear in your renders. I don't know why AC manages to turn a single flat surface into a bunch of triangles, but i've never had a problem with them when rendering. <BR /> <BR /> They do make working with surfaces in C4D a bit of a pain though Wed, 28 Mar 2007 23:43:53 GMT https://community.graphisoft.com/t5/Visualization/Triangles/m-p/17839#M17193 owen 2007-03-28T23:43:53Z