Tranfert information from color Pyro to geo

[Furox]

Hello everyone!

I am new to houdini and I am currently working on PyroFX

I'm trying to apply the color of my pyro to my geometry, from the informations contained in the Heat or the temperature. The information is in the voxels, so I can not transfer it to a shader or apply it to my geometry.

I do not know if the sample volume would be a track for you. I'll give you a scene, if you could enlighten me on it.

A big thank-you!

color_attribute_tranfert.hip

[celd]

You can volume sample the fields and replicate the same setup that pyro shader has. You can do this in the shader as well.

color_attribute_transfer.hip

[Furox]

Thank you a lot man for your fast reply!

This is exactly what i needed! ;)!

 

Have a nice day!

[Furox]

This is normal, if they have a black color to the base of the pyro?

This is little spot of black in the geo then i can't change  ?

Thank you :)!

 

Color_attribute_tranfert.hip

[Andrea]

You have this black spots because you are using the volumesample also on the heat, which has also values of zero. The zero heat values multiplied by this temperature ramp are causing the black spots.

It depends what you want to achieve. You can modify the operations inside your volumeVOP or you can modify the heat before it goes inside the volumeVOP (clamping/fitting it to 0.5-1 for example)