enna Posted September 22, 2013 Share Posted September 22, 2013 I have been trying to create density falloff with in my vdb volumes. Because of large scales I have been using vdb and the volume geometries that create those vdb are arbitrary asymmetrical shapes. When I was doing my test on a regular spherical object it was easy to find the max distance from surface to center which then I can feed into a fit node in volume Vop. But now I have asymmetrical shapes I am a little stuck. Basically I want a falloff curve which I can control with a spline ramp and have denser core, I have been reading about point cloud and doing some shortest distance calculation from a point to surface but I hope maybe there is a simple way before I jump into complex calculations. Any ideas or suggestions are much appreciated. Quote Link to comment Share on other sites More sharing options...
eetu Posted September 23, 2013 Share Posted September 23, 2013 If your VDB volumes are SDF volumes, then the smallest value in the volume is actually the farthest distance from the surface (inside the object). Quote Link to comment Share on other sites More sharing options...
enna Posted September 23, 2013 Author Share Posted September 23, 2013 Unfortunately they are not SDF but fog volumes reason why I need a density falloff. Quote Link to comment Share on other sites More sharing options...
edward Posted September 25, 2013 Share Posted September 25, 2013 What about a VDB Smooth set to Mean? ie. just blur it out 1 Quote Link to comment Share on other sites More sharing options...
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