Question for emitting Particles

[akirasun 0]

Hi there everyone

What I want to do is try to emitting particles from a object that textured by a Ramp Shader , and the particles will be emitted from while white area pass through.

I assume the “vopsop” or “attribcreate” can help to achieve that , but I'm completely new to houdini , even I spent a lot of time for searching document and old posts, try to figure out which expression or VEX node that can do this. I have tried such like “ch() , shopstring() , pic() and etc...” , but still get stuck

Appreciate for any suggestion or help.

Thanks in advance.

textureMapping_01.hipnc

[Macha 119]

Try this.

I suppose you could drive the vop ramp with channels that you reference from the material but I think this way may be easier.

textureMapping_01.hipnc

[akirasun 0]

Try this.

I suppose you could drive the vop ramp with channels that you reference from the material but I think this way may be easier.

Thanks a lot , even inspired me that have a other way to achieve this effect by using channel reference , I will try it later.

That's really helped me