https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491663#M24924 the question is how to choose which points to draw triangle, basically, there's complicated algorithm to do triangulation.<BR /> <BR /> in Land Desktop, there's a function to build a surface based on a set of points (file), how to do it using programming? or how to access its function (algorithm) used in building surface? Tue, 22 Nov 2005 02:16:47 GMT Anonymous 2005-11-22T02:16:47Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491659#M24920 build surface (TIN model) through Triangulation, but only lines (links) are needed. Mon, 21 Nov 2005 08:11:12 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491659#M24920 Anonymous 2005-11-21T08:11:12Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491660#M24921 superjoe wrote:<BR /> <BR /> &gt; build surface (TIN model) through Triangulation, but only lines (links) are needed.<BR /> <BR /> I think you missed a few groups, perhaps you should CROSS POST in the <BR /> rest of them?<BR /> <BR /> Terry Mon, 21 Nov 2005 12:20:56 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491660#M24921 Anonymous 2005-11-21T12:20:56Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491661#M24922 I know cross-posting is bad, and i don't like it very much myself.<BR /> But when it is on the table...<BR /> <BR /> If someone want's to know if something is doable in arx OR .net OR lisp OR <BR /> vba.<BR /> Where is that someone supposed to post the question?<BR /> <BR /> I do not take any sides here, I just want to to know the right way to do it.<BR /> <BR /> <BR /> /Matt<BR /> <BR /> <BR /> <BR /> "Terry W. Dotson" <NOSPAM> wrote in message <BR /> news:5018807@discussion.autodesk.com...<BR /> superjoe wrote:<BR /> <BR /> &gt; build surface (TIN model) through Triangulation, but only lines (links) <BR /> &gt; are needed.<BR /> <BR /> I think you missed a few groups, perhaps you should CROSS POST in the<BR /> rest of them?<BR /> <BR /> Terry</NOSPAM> Mon, 21 Nov 2005 13:23:33 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491661#M24922 Anonymous 2005-11-21T13:23:33Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491662#M24923 1. Builid a set of triangles from input points.<BR /> 2. Explode each triangle to lines.<BR /> <BR /> Does it work for you? Mon, 21 Nov 2005 13:27:23 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491662#M24923 Anonymous 2005-11-21T13:27:23Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491663#M24924 the question is how to choose which points to draw triangle, basically, there's complicated algorithm to do triangulation.<BR /> <BR /> in Land Desktop, there's a function to build a surface based on a set of points (file), how to do it using programming? or how to access its function (algorithm) used in building surface? Tue, 22 Nov 2005 02:16:47 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491663#M24924 Anonymous 2005-11-22T02:16:47Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491664#M24925 You need to implement delaunay 3d triangulation algorithm. Tue, 22 Nov 2005 10:19:52 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491664#M24925 Anonymous 2005-11-22T10:19:52Z https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491665#M24926 i solved the problem by using VBA coding from Steve Cannon, basically by building surface at LD, then get all the edges from this surface.<BR /> <BR /> this will use buildin triangulation algorithm at LD instead of implementing one.<BR /> <BR /> thanks for your help. Wed, 23 Nov 2005 02:33:40 GMT https://forums.autodesk.com/t5/objectarx-forum/how-to-build-lines-from-a-set-of-points/m-p/1491665#M24926 Anonymous 2005-11-23T02:33:40Z