substep Posted June 9, 2013 Share Posted June 9, 2013 (edited) Hi. I have a question about how mass is calculated for a RBD fracture dop. when using bullet, is the mass being calculated for the actual volume of the object itself, or for the collision geo (convex hull) that represents it? I do notice sometimes, that on some smaller pieces, the collision geometry is almost half as big as the object it represents. I think this is fixed by decreasing the padding. but still, which one is it calculating the mass from? thanks! Edited June 9, 2013 by substep Quote Link to comment Share on other sites More sharing options...
anim Posted June 9, 2013 Share Posted June 9, 2013 the mass is calculated from bullet representation of the geometry but before padding is applied so if you set your padding to 0 and Show Guide Geometry, that's what's used to compute the mass and not the actual geometry of the input object unless you are using geometry As Is with disabled Polygons As Convex Hulls 1 Quote Link to comment Share on other sites More sharing options...
substep Posted June 9, 2013 Author Share Posted June 9, 2013 great! Thank you Quote Link to comment Share on other sites More sharing options...
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