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Animating the grid of camera culling?
#1
Hi folks,

I'm working on quite long fume grids at the moment where I have a person running through shot so it needs a long fume grid to fit - I also have a panning camera that follows the person - is it okay to animate a fume grid over time or is there any way to cut off calculations of things that are going out of shot so I can speed up sims?

Cheers!

John
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#2
John

Check out the script that RIF has posted on CGFLUIDS, this might do what you want. It cuts off the voxel information and the adaptive grid. I havent tried it yet. But it looks really handy for long containers.

tim
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#3
You can animate the "active-checkbox" for Objects.
For example turning everything off until it ´s needed - then animate it on - an when not needed anymore, animate it off again.
So calculation will not waste time with objects/sources that are not needed at the time,
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#4
Thanks for the tips folks!
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#5
Hello,

Here are few things you can do (except using script).

- set adaptive grid sensitivity to 0.1
- use higher Smoke and Temperature Dissipation Min. Dens and Min. Temp
- use higher Smoke and Temperature Dissipation Strength
- you can put a Simple Source with box shape at a certain distance behind character. Set Simple Source Type for fuel, smoke and temp to "Set" and use 0.0 for Amount. That should wipe any information from the grid, which will cause adaptive grid to shrink.

Kresimir
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#6
Ah - that last one is quite sneaky and should do the job perfectly - thanks for the hints!
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