JayBBK Posted August 17, 2019 Share Posted August 17, 2019 Hi everybody, I am new to houdini and i am already scared. I know how to emit pyro from colors by using ramp than a delete node with a $CR < 0.1/.5/.8. on my emitter it work but i want to control the "density" of the emission based on the gray level of my ramp/paint node. Meaning white zone = 100% emission dark zone = 0% thanks you Quote Link to comment Share on other sites More sharing options...
DonRomano Posted August 18, 2019 Share Posted August 18, 2019 I don't really understand what you want to achieve, but why don't you multiply the density by the color of your emission zone ? And then you can remultiply it with a constant after to control the amount of density, if you want more or less. Quote Link to comment Share on other sites More sharing options...
JayBBK Posted August 19, 2019 Author Share Posted August 19, 2019 Hi DonRomano, this is what i want to do. multiply the density base on my color of the emitter(black to white). I dont know how to do it Quote Link to comment Share on other sites More sharing options...
DonRomano Posted August 19, 2019 Share Posted August 19, 2019 Can you share us your hipfile so I can help you ? Quote Link to comment Share on other sites More sharing options...
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