08-25-2008, 06:21 PM
ok, here's the situation...
I'm doing a sim that emits fume from an object, the smoke being driven by a wind SW with a strength of about 500. I'm doing this to sim something moving very fast without having gigantic sim bounds.
what I'd *like* to do is the opacity by age, or even the color by age.. which I cant seem to do at all. I've tried everything from grad ramps to, well, pretty much every map I can get a ramp off of
The sim itself, if you used particles, would have a particle life of maybe 3 frames
I'd love to know how to use the fluid mapping with a gradient, because it doesnt seem to work at all...What'd be cool as well is to have color/opacity based of distance to object(user picks object, like in the object mode in falloff map)
if you want to repro this scene, make a 30x30x30unit fume box, stick a simple source in it, add a wind with 500 strength, and sim. now try to put a gradient for opacity on it
tks!
cp
I'm doing a sim that emits fume from an object, the smoke being driven by a wind SW with a strength of about 500. I'm doing this to sim something moving very fast without having gigantic sim bounds.
what I'd *like* to do is the opacity by age, or even the color by age.. which I cant seem to do at all. I've tried everything from grad ramps to, well, pretty much every map I can get a ramp off of
The sim itself, if you used particles, would have a particle life of maybe 3 framesI'd love to know how to use the fluid mapping with a gradient, because it doesnt seem to work at all...What'd be cool as well is to have color/opacity based of distance to object(user picks object, like in the object mode in falloff map)
if you want to repro this scene, make a 30x30x30unit fume box, stick a simple source in it, add a wind with 500 strength, and sim. now try to put a gradient for opacity on it
tks!
cp