sirkitesalot Posted May 18, 2011 Share Posted May 18, 2011 Hi all, I'm trying to propagate an attribute across a surface using a sop solver. In this test scene I'm transferring the colour of the sphere to the grid and spreading the value out over time. It works if the grid is static, however as soon as I tick the 'Use Deforming Geometry' button on the rbd object, the effect of the sop solver seems to be ignored. Can anyone help? Thanks, James test_propagateAttr_v001.hip Quote Link to comment Share on other sites More sharing options...
graham Posted May 18, 2011 Share Posted May 18, 2011 (edited) When you use deforming geometry you are basically telling Houdini that the input geometry is going to be changing somehow and that on each frame it should load the source geometry into the object again. If you load the source geo in every frame then anything you are doing in the SOP Solver is being blasted away as that geometry is tossed in favor of the new geo. In your case it would probably be best to apply your noise after the DOP network in SOPs. Edited May 18, 2011 by graham Quote Link to comment Share on other sites More sharing options...
sirkitesalot Posted May 18, 2011 Author Share Posted May 18, 2011 Thanks Graham, that makes sense! If anyone's interested, here's a simple work around. I've just added a point sop in the sop solver to copy the point translations back without having to tick 'Use Deforming Geometry'. test_propagateAttr_v002.hip Quote Link to comment Share on other sites More sharing options...
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