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+--- Thread: Voxels keep entering my colliding object (/showthread.php?tid=694)
Voxels keep entering my colliding object - hummus - 09-22-2008
Hi,
I have a big problem here I can't seem to fix.
I've created a "bed" of smoke voxels - and I'm trying to drop a brick on it - to get the nice plume of "dust" around the brick - with flowy motion.
I've managed to create an object that comes from the bottom and creates a mushroom-like puff - but when I bring an object from the top - the voxels don't go around it - BUT - inside it.
I tried flipping the normals, changing Shell to Solid, tried different speeds, different heights, still - nothing. I just can't understand it.
If I do Solid mode - seems like there's no movement on the voxels. The nicest movement is in Shell mode - but in this case - only inside my colliding object.
Any ideas?
Thanks.
Attached - sketches of the smoke behavior when the colliding object comes from the bottom and when it comes from the top.
Re: Voxels keep entering my colliding object - sitnisati - 09-25-2008
Hello,
How thick is that bed of smoke (now many voxels thick) ?
If you throw a sphere , or any closed object - do you see any difference.
Regards,
Kresimir
Re: Voxels keep entering my colliding object - hummus - 09-28-2008
Hi,
The bed of smoke is thin and the voxel count is low. I'm attaching a file for you to see. Also attached is a small gif animation showing what happens when the cube is dropped from above as opposed from the bottom.
Whether the voxel count is high or low - I would expect the reaction to be the same from whichever direction.
I also tried using a geosphere - same results. The sphere filled in with the smoke.
Maybe a higher voxel count would correct this - but I've noticed two things when dropping down the spacing value:
1. the bed of smoke rises considerably when the value drops. It's wilder and about 4 times as high (thick) when I drop the spacing from 3.0 to 2.0.
2. The simulation times are a killer, and the FXD files are much larger.
Thanks.