Category: hou-general

Hey all, after seeing lots and lots of similar questions on a few Houdini discords about how to vary copies in the Copy SOP, I wrote a terribly long explanation of how to manipulate orientation and instancing using template attributes, matrices, for-each loops, compile blocks, and some other tricks with packed disk primitives, with a .hip file at the end. Might help some newer or intermediate users. Post is here: www.toadstorm.com/blog/?p=493

@Lorne I guess you saw matt/matte/dave’s one above but I dug out the hermite animation interpolator I did… it uses v from the points instead of the two extra timeshifts and because it has explicit tangents you can scale them with the damp parm to make it less curvy. if you use central difference in a trail to calc v and damp=1 it’s actually identical to the catmull-rom one… or you can use foward/backward difference to have it over/undershoot on the corners. cubic splines folks!

Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/catmull_rom_hermite_interp.hipnc
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/catmull_rom_hermite_interp_screenshot.png