jodokub Posted March 14, 2011 Share Posted March 14, 2011 hi everybody, i am just at the beginner level and i am searching for some expression or maybe there is also a other way for solving this problem. i would like to modell a shaped grid and and have for each primitive a different inset value of extrudtion linked to the position. i am sure there must be a way to link my inset value of my extrude node to the y position of my primitive. for better understanding i attached a jpg of my viewport. so there should be more extruding for the "higher" primitives. it would be totaly nice if someone have time for this question. thanx a lot jodokub Quote Link to comment Share on other sites More sharing options...
Matt_K Posted March 14, 2011 Share Posted March 14, 2011 Hi jodokub, One way to try: Perhaps use the $BBY variable to drive the extrusion distance? 1. Create an attribute, call it something like exheight, and put $BBY into the value. 2. Place it just after you deform your mesh to give it height. 3. Use an attribute promote sop to promote exheight from point to primitive. 4. In your extrude SOP, use the $EXHEIGHT for the extrusion depth in the Translate Z paramater. I don't have Houdini open at the moment to check, but I think that should work. Hope it helps, Matt. Quote Link to comment Share on other sites More sharing options...
phs_phl Posted March 14, 2011 Share Posted March 14, 2011 I'd use a ray sop to project the extrudeFront group of the inset extrusion against the original grid position.stickyExtrusion.hipnc Quote Link to comment Share on other sites More sharing options...
jodokub Posted March 14, 2011 Author Share Posted March 14, 2011 thanx for the quick help. i will try your proposals... jodokub Quote Link to comment Share on other sites More sharing options...
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