Re: Polygons In Space
- To: mathgroup@smc.vnet.net
- Subject: [mg11882] Re: Polygons In Space
- From: Allan Hayes <hay@haystack.demon.co.uk>
- Date: Fri, 3 Apr 1998 03:45:38 -0500
- References: <6fsjeq$gii@smc.vnet.net>
Will Self wrote: > > I find that Mathematica does not show non-convex polygons in three > dimensions properly. Does anyone have a way to do this? If I have to > do it for myself, I think I will break the polygon into triangles. Does > anyone have a way to break a (two-dimensional) polygon into triangles? > If I have to do that for myself, I think I will try some recursive > tack. > > I would suppose that other people have encountered this before, but this > is the first I've had to deal with it. Please email me. Thanks. > > Will Self > Montana Will This is dealt with in Tom Wickham-Jones, Mathematica Grahics, p 448. He uses his function NonConvexTriangulation from package ExtendGraphics`NonConvexTriangulate`, available from MathSource in ExtendGraphics. Allan -- Allan Hayes Training and Consulting Leicester, UK hay@haystack.demon.co.uk http://www.haystack.demon.co.uk voice: +44 (0)116 271 4198 fax: +44 (0)116 271 8642