Hey all, I've been reading up on the old National Design Repository project from Regli et al.; actually, I found out about them many months ago, downloaded their repository, and earlier today found out that they were using OpenCASCADE in their backend, and in fact were writing some methods for "part mating"- checking whether or not two given parts were compatible mates- which was put into a fascinating presentation:
Scale-Space Representations and their Applications to 3D Matching of Solid Models powerpoint: http://dimacs.rutgers.edu/Workshops/CompAided/slides/shokoufandeh.ppt PDF of the same powerpoint: http://heybryan.org/~bbishop/docs/Scale-Space%20Representations%20and%20their%20Applications%20to%203D%20Matching%20of%20Solid%20Models.ppt.pdf Regli's stuff: http://designrepository.org/ Basically, it's a method of using the OCC topology classes to explore whether or not two parts can be geometrically fit together. The method of implementation looks somewhat straightforward, but it's a shame that this code has to be written because (1) I'm unable to find anything else (open source, or even free, I mean) out on the internet (wtf?), and (2) apparently OCC used to have something in the API for this called ShapePlacement. Check it out- http://www.opencascade.org/org/forum/thread_9680/ "I had been using the OCC ShapePlacement package to mate faces and otherwise align my shapes (mostly boxes). I see that the OCC classes were retired with OCC 6.1.0. Is there an alternative approach? I'm aware that I could adopt the 5.2 package as my own and continue to use it, but I'd rather avoid that if possible. Moreover, it seems that I can't be the only person in the world seeking to position shapes by mating or aligning faces (or edges). Any suggestions would be greatly appreciated." Anyway, I am also sending this to Regli in the hopes that maybe the Scale-Space Representation work went somewhere- maybe there is some code that I can look at and play with? - Bryan http://heybryan.org/ 1 512 203 0507 Automated Design Lab University of Texas at Austin _______________________________________________ Pythonocc-users mailing list Pythonocc-users@gna.org https://mail.gna.org/listinfo/pythonocc-users
