calin_casian Posted October 7, 2003 Share Posted October 7, 2003 hi, I'm no master in using particle on any 3d software but I'm curious if it's possible in houdini to geneate particles out of an gray scale image like in maya and after generating the particle should stick to the surface (follow any surface deformation that may occur). I need this to replace the particle with some objects. see ya calin Quote Link to comment Share on other sites More sharing options...
ksmith Posted October 8, 2003 Share Posted October 8, 2003 Yes you can, bring your image into cops, greyscale it to your liking, or contrast it up to maybe use luminance then in the source pop, use the pic function in your birth probability field, look up the pic function in the exhelp of a textport viewer, you can birth based on different colors, luminance, saturation, quite a few things. I'm not sure but I think you'll have to move the emitter above the surface a bit for it to get the collisions to work correctly, just attach a collision pop and you should be good to go. It's almost exactly the same as texture emission in Maya, just a little different way of going about it. Quote Link to comment Share on other sites More sharing options...
calin_casian Posted October 8, 2003 Author Share Posted October 8, 2003 many thx. it worked this way: build model->put UV->point OP than in pop source->SOP pointOP->surface(random, ordered)->birth probability->pic("file", $MAPU, $MAPV, D_CLUM) see ya calin 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.