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Custom smoke vortex


kerguestenen

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Hi!

I'm trying to make a custom vortex force from gasFieldVop in a dopnetwork.
I'm nearly successful, but no matter what, i can't change the center of my vortex...
I'm getting the P value and substracting from it a constant vector, which should be my vortex's center position (those two values are first set to 0 in Y), then i use this vector in two parts:
- one for the tangential force, by a cross product with an (0,1,0) vector
- and itself for a "spread" from center force.
But no matter what i put in my custom constant center, it seems the vortex always use the center of my volume...
I've tried to change the P value with a transform node, but i'm not quite used to it so maybe it have nothing to do with that...


Does anyone knows what could be wrong?
Thanks a lot if anyone can help!

vortexSetup.jpg

Edited by kerguestenen
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Hi again,


So, i've plugged my gasFieldVop after my source volume, instead of pugging it with the other velocity update nodes, and now it's working like a charm...
But, I still would really like to understand what's the difference is!
The way i built my vop, i though no matter what is happening, it would compute my vel and make it the new vel... :s

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