Jump to content
Sign in to follow this  
calin_casian

particle and texture problem

Recommended Posts

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

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×