JamesTaylor Posted February 13, 2006 Share Posted February 13, 2006 can anyone shed any light on why i'm getting strange displacment results on this image? its most noticable on the left gable, as you can see it seems to be showing where the triangulation of the model is occuring? The geometry is modelled in AutoCAD and file linked into max. In max i have applied a vray material, UVW Mapping and VrayDisplacementMod set on 3D mapping. Thanks James Link to comment Share on other sites More sharing options...
enigma Posted February 13, 2006 Share Posted February 13, 2006 i do think the triangulation on the walls is caused by a boolean operation, causing some vertices to mis align from the normal plane. I usually had to do the manual realignment before until i discovered Power booleans. Link to comment Share on other sites More sharing options...
JamesTaylor Posted February 13, 2006 Author Share Posted February 13, 2006 Is this likely? the geometry has been modelled in CAD, all boolean operations were done in CAD too Link to comment Share on other sites More sharing options...
kippu Posted February 13, 2006 Share Posted February 13, 2006 its a "normals " issue ... .select those triangular faces and flip the normals and it should be fine Link to comment Share on other sites More sharing options...
Fermi Bertran Posted February 13, 2006 Share Posted February 13, 2006 As already mentioned, it may be the surface topology of teh booleaned object. MorbidAngel made a nice post at the VRay forum explaining it pretty well: http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=14300 worth looking at. Link to comment Share on other sites More sharing options...
JamesTaylor Posted February 14, 2006 Author Share Posted February 14, 2006 thanks for all the suggestions! the link fermi posted explains it well, although it makes it more difficult to use when working with autcad models subdividing the geometry to 1000mm first seems to have worked well enough! Thanks again James Link to comment Share on other sites More sharing options...
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