tima@agora.uucp (Tim Anderson) (10/25/90)
Hello net! I was just hunkering down to whack out surface/surface intersections. I will be doing pretty much exactly like Mortenson describes in his book _Geometric Modeling_. Are there any references to other fancy dancy and extremely fast (hee hee!) methods to compute these things? I will be intersecting NURBS to NURBS, Coons to NURBS and Coons to Coons. Yes, eventually I will probably convert everything to cubic rational Bezier's, but I have to get this done before Autofact... Once the conversion to cubic rational bez's takes place I can take advantage of fun things like 'convex hulls' and 'controlling polygonal meshes' but like I said, I have to get something done NOW then find a better way to do it! So, my question is again any references to "The greatest surface surface intersection routine in the world" that I can replace my hacked Mortenson code with after Autofact? Thanks! tima@agora.hf.intel.com
joerg@cat.de (Markus Schichtel) (10/27/90)
+ Tim Anderson (tima@agora.uucp) schrieb am 25.10.: > Hello net! > > I was just hunkering down to whack out surface/surface intersections. I > will be doing pretty much exactly like Mortenson describes in his book > _Geometric Modeling_. Are there any references to other fancy dancy and > extremely fast (hee hee!) methods to compute these things? I will be > intersecting NURBS to NURBS, Coons to NURBS and Coons to Coons. Yes, > eventually I will probably convert everything to cubic rational Bezier's, > but I have to get this done before Autofact... Once the conversion to > cubic rational bez's takes place I can take advantage of fun things like > 'convex hulls' and 'controlling polygonal meshes' but like I said, I have > to get something done NOW then find a better way to do it! > > So, my question is again any references to "The greatest surface surface > intersection routine in the world" that I can replace my hacked Mortenson > code with after Autofact? Thanks! > > tima@agora.hf.intel.com Have at look at the following papers: Barnhill Farin et alii Surface Surface Intersection Comp.Aided geom.Design Vol.4(1987) pp 3-16 Choi and S Y Ju Consblending in surface modeling Comp. Aided geometr. Design 1989 --- Markus Schichtel (joerg@cat.de) C.A.T. Kommunikations-System, Frankfurt