DeeLan Posted August 19, 2016 Share Posted August 19, 2016 Quick question. How does one modify Constraint Attributes using a SOP Solver. In my example scene, I'm trying to divide the 'angle' attribute by 2, but it isn't having any effect in the scene. Oddly enough, the geometry spreadsheet recognizes the division when viewed within the SOP solver (named 'DIVIDE ANGLE') itself, but when back in the DOPs context its as if the SOP Solver was never there. Modify_Constraint_Values_01.hipnc Quote Link to comment Share on other sites More sharing options...
rayman Posted August 19, 2016 Share Posted August 19, 2016 Your confusion comes from not understanding the order of execution. What comes inside SOP solver is the values from previous iteration, they are then passed to Bullet solver and modified by it - thats why values inside do not match the values from DOP network - they are just not shown in the same timestep. Also, keep in mind that "angle" is just a feedback attribute - even if you change it (as far as I know)- it won't affect simulation at all. You need to create vector4 "orient" or vector "r" and set it manually. It is a little tricky but not impossible. Check the docs for more info. 1 Quote Link to comment Share on other sites More sharing options...
Follyx Posted September 17, 2016 Share Posted September 17, 2016 A book from Rayman with his superb knowledge about Houdini and its interna would be like a long wished christmas present.... Quote Link to comment Share on other sites More sharing options...
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