logix1390 Posted October 14, 2016 Share Posted October 14, 2016 I have a square geometry. 4 units on each side using the measure sop it calculates : perimeter = 16 area= 16 volume = 10.6667 ??????? How is Houdini coming up with this number for the volume. I know it's a square and it does not have a real volume but i'm curious to know how it came up with this number. Quote Link to comment Share on other sites More sharing options...
konstantin magnus Posted October 14, 2016 Share Posted October 14, 2016 I get volume 0.0 when i put a grid of 4*4 units into a measure SOP. attribpromote sums the zeros up to 0.0, as well. Quote Link to comment Share on other sites More sharing options...
ciliath Posted October 14, 2016 Share Posted October 14, 2016 @logix1390 You have to put down an attribute promote, primitive to detail, with promotion method sum to get the real volume. If I understand the help file correctly, the ˝volume˝ of each primitive is calculated based on the pyramid It forms between the face of your primitive to the point defined by the ˝center˝ value you give It. So adding the volume of all these pyramids together will give you the real volume of the object. @konstatin_magnus A grid has no volume, I'm not sure what you are really trying to prove? Quote Link to comment Share on other sites More sharing options...
konstantin magnus Posted October 14, 2016 Share Posted October 14, 2016 i tried to prove that the measure sop is working correctly. Quote Link to comment Share on other sites More sharing options...
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