Eucalyptus Posted December 13, 2012 Share Posted December 13, 2012 I'm sure this question has been asked in the past, but doing some searches I couldn't find exactly what I was looking for I don't think. Fortunately, it's a real simple question: I have a Sphere, I'm copying a geometry (Triangle) onto the points of the sphere after using a pointsfromvolume. So basically I have a sphere made up of a bunch of triangles. I want the triangles to all face inwards with their point "tips", towards the center of the sphere as a whole. I am not very familiar with using VOP networks, or networks at all in Houdini, and was wondering if there was an easy way to do this? Or if someone could give me a quick intro run-down of how to connect things. I imagine what I want can be achieved using a Lookat in a VOPSOP, but I don't know how to use it. Is there an easier way to achieve this? Cheers, Dave Screenshot of my simple setup: Quote Link to comment Share on other sites More sharing options...
edward Posted December 13, 2012 Share Posted December 13, 2012 Insert a Point SOP after your "pointsfromvolume1" node. Set it to "Add Normal". Change $NX, $NY, $NZ to -$TX, -$TY, -$TZ respectively. Quote Link to comment Share on other sites More sharing options...
Eucalyptus Posted December 13, 2012 Author Share Posted December 13, 2012 Excellent, thanks edward! I had tried a Point SOP in that location earlier but just wasn't sure what expression was needed to have them point inwards. Cheers Quote Link to comment Share on other sites More sharing options...
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