06-01-2015, 11:18 AM
Thanks Kresimir for your quick reply.
To test smoke density and dissipation more, I did a simple test: created very dense particle system, set emission rate to "add" with value equals 1 (I assume it's 1 unit of smoke per voxel per frame?), and in the FumeFX grid (80x13x80) I set dissipation rate to 0.0 (so nothing gets dissipated), and set vorticity to 0.0, no noise, default advection.
I simulated the scene for 50 frames and I was excepting to to see smoke density reaching 50 (because 50 frames x 1 emission rate and no dissipation), then changed smoke low/high threshold rendering parameters to different ranges such as (0.0,50), (0.0,0.001) and (0.001,0.002) and rendered the scene (pls see attached).
Now my question is: why rendering of thresholds (0.0,0.001), (0.001,0.002) and (0.0,50) looked identical? Does this imply that most smoke density is in range (0.0,0.001)? should not the smoke density reach 50 since we have no dissipation and each frame we are adding 1 unit of smoke?
Thanks in advance,
To test smoke density and dissipation more, I did a simple test: created very dense particle system, set emission rate to "add" with value equals 1 (I assume it's 1 unit of smoke per voxel per frame?), and in the FumeFX grid (80x13x80) I set dissipation rate to 0.0 (so nothing gets dissipated), and set vorticity to 0.0, no noise, default advection.
I simulated the scene for 50 frames and I was excepting to to see smoke density reaching 50 (because 50 frames x 1 emission rate and no dissipation), then changed smoke low/high threshold rendering parameters to different ranges such as (0.0,50), (0.0,0.001) and (0.001,0.002) and rendered the scene (pls see attached).
Now my question is: why rendering of thresholds (0.0,0.001), (0.001,0.002) and (0.0,50) looked identical? Does this imply that most smoke density is in range (0.0,0.001)? should not the smoke density reach 50 since we have no dissipation and each frame we are adding 1 unit of smoke?
Thanks in advance,