rod.vfx.td Posted July 6, 2018 Share Posted July 6, 2018 (edited) What XSI | ICE "Project a vector" equivalent on POP/VOPS? reference: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/files/iceref_Project_Vector.htm the node on XSI returns 3 things: RESULT LENGTH VALID any ideas? thanks in advance! Edited July 6, 2018 by rod.vfx.td Quote Link to comment Share on other sites More sharing options...
toadstorm Posted July 6, 2018 Share Posted July 6, 2018 In VOPs it would be a combination of the Intersect VOP to fire the ray, then the Distance VOP to compute the distance between the origin point of the ray and the Intersect VOP's output "pos". Intersect will return -1 as the "prim" output if an actual primitive isn't hit, so you could use that as your "VALID" output. Quote Link to comment Share on other sites More sharing options...
MENOZ Posted July 6, 2018 Share Posted July 6, 2018 Intersect VOP gives the coords on a surface, reading the help it seems to me more like dot(a,b)/length(b) https://en.wikipedia.org/wiki/Dot_product wiki calls it "Scalar projection" Never used softimage tho. Quote Link to comment Share on other sites More sharing options...
rod.vfx.td Posted July 6, 2018 Author Share Posted July 6, 2018 (edited) Thanks Edited July 10, 2018 by rod.vfx.td corrections Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.