scp Posted January 17, 2011 Share Posted January 17, 2011 Hi Guys, Has any one any ideas as to how to isolate polys that are self intersecting on a surface? And what would be the best procedure to try to fix these. Thanks in advance, Simon Quote Link to comment Share on other sites More sharing options...
scp Posted January 24, 2011 Author Share Posted January 24, 2011 Still struggling with this if anyone has any ideas? thanks... Quote Link to comment Share on other sites More sharing options...
Macha Posted January 24, 2011 Share Posted January 24, 2011 It depends on your geometry. Can you send us a sample? Quote Link to comment Share on other sites More sharing options...
scp Posted January 25, 2011 Author Share Posted January 25, 2011 Hey, thanks for the reply. Here's a hip with the sort of thing I'm dealing with. Just a bit of point deformation in vops that I need to clean up. Finally I won't have access to the process but will need to find a way to do a post analysis if you have an ideas? thanks, simon selfPenetratingGeometry.hip Quote Link to comment Share on other sites More sharing options...
Macha Posted January 26, 2011 Share Posted January 26, 2011 (edited) Hm, tricky. Have you tried the smooth sop? In that very specific example I get good results. Perhaps group by curvature beforehand. Edited January 26, 2011 by Macha Quote Link to comment Share on other sites More sharing options...
scp Posted January 28, 2011 Author Share Posted January 28, 2011 Thanks for taking a look, I couldn't personally get the smooth sop to work on this geo but also the sample was just a very stripped down example, I'm really looking for a way to error check a piece of geometry for any of these types of issues that will come back at me at render time. Quote Link to comment Share on other sites More sharing options...
petz Posted January 28, 2011 Share Posted January 28, 2011 (edited) thats not a simple thing and i can´t think of a way doing it without a fair amount of coding. if you "just" want to detect the intersecting prims you can use some external libraries (cgal, tetgen, ...) or hack something together using the hdk. if you want a really clean mesh,......... well, that will require much more time and knowledge and since you are dealing with grids (non-closed geometry) it quite likely becomes a real challenge to implement a fast and reliable solution. petz Edited January 28, 2011 by petz Quote Link to comment Share on other sites More sharing options...
scp Posted January 31, 2011 Author Share Posted January 31, 2011 Thanks for the words of warning petz. Going to leave this for the time being whilst trying to rework the original generation of the geometry. All seems a bit complex to get started and really haven't the time currently. Will check out those pointers when I get a chance, thanks again. Quote Link to comment Share on other sites More sharing options...
Macha Posted February 1, 2011 Share Posted February 1, 2011 Thanks for taking a look, I couldn't personally get the smooth sop to work on this geo Here's a simple setup. But it may not be good enough for you. selfpen.hip Quote Link to comment Share on other sites More sharing options...
scp Posted February 1, 2011 Author Share Posted February 1, 2011 thanks Macha...works pretty well actually. I think it is just going to be a bit of a juggling act to get something that works... but definitely pretty good results with the smoothing. thanks again Quote Link to comment Share on other sites More sharing options...
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