vfxator Posted July 6, 2015 Share Posted July 6, 2015 Hi guys, I'm a Maya guy, new to this world of Houdini. Please don't mind if I’m asking something idiotic. I wanted to move some scattered points on a surface, from top to bottom, and when a point reaches the bottom, it should go back to top and start again moving down. Like this, points should keep moving in loop. I don't want to use particles or solver. I'm looking for some solutions with expressions or vopsop. Hope someone can help me. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
fathom Posted July 7, 2015 Share Posted July 7, 2015 if it's a mesh (ie, uniform rows and columns) then you can use a creep sop. if it's not a regular mesh, then you could probably creep on a proxy shape (like a mesh tube) and then ray project that onto your desired shape. Quote Link to comment Share on other sites More sharing options...
mestela Posted July 7, 2015 Share Posted July 7, 2015 Here's basically what the creep sop does, in vop form. Like fathom says, it assumes for 0-1 uv's, so works best with nurbs surfaces (and even then I get an odd seam on some of the shapes, not sure why). Anyway, might be useful. creep_vop.hip 1 Quote Link to comment Share on other sites More sharing options...
vfxator Posted July 7, 2015 Author Share Posted July 7, 2015 Yes, this is what I was looking for. Thanks for this creep sop technic Fathom and Mestela. Your hip file is just the perfect solution for my problem. Many thanks. Quote Link to comment Share on other sites More sharing options...
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