How to emit fire from texture? How to light objects with fire?

[chaindriver]

Hi,

I'm kinda new to Houdini and have a few basic questions to ask. Hope you guys can help me out.

i) How do I emit fuel/temperature etc based on an animated texture?

ii) How do I let the simulated fire light up the surroundings?

Thanks!

[Erik_JE]

Some hints.

1. Create your own volume fields from your textures. Make them Set Always.

2. Create a geometry light from your heat volume field. Make it not normalize.

[smaugthewyrm]

the topic your asking about is pretty deep.

peter claes has up a post with example hip files. possibly you'll find a solution in there.

LINK --> Controlling Fluid Sims with Custom Fields

[bunker]

Adding fuel and temperature from a texture is easy, but you can't use the default sourcing method.

Have a look at this simple example : pyro_from_texture.hip

For lighting, I would use pointclouds created from a lowres render using the pcwrite function.

hope that helps

Edited July 22, 2011 by bunker

[md5]

Really cool and simple example, thanks Bunker !

Edited July 23, 2011 by md5

[chaindriver]

Adding fuel and temperature from a texture is easy, but you can't use the default sourcing method.

Have a look at this simple example : pyro_from_texture.hip

For lighting, I would use pointclouds created from a lowres render using the pcwrite function.

hope that helps

Thanks for all the replies guys! Especially you Bunker, for the example file.

Bunker, after getting the pointclouds, what should I do with it? Are there any existing shaders that can read in the pointcloud to light up the scene, or do I have to dig into VOPs...?

[bunker]

You need to build your shader in VOPs or VEX.

Thanks for all the replies guys! Especially you Bunker, for the example file.

Bunker, after getting the pointclouds, what should I do with it? Are there any existing shaders that can read in the pointcloud to light up the scene, or do I have to dig into VOPs...?