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Everything posted by nicoladanese

  1. customize pyro emitter

    great! thanks again very appreciated!
  2. customize pyro emitter

    in fact using a group node and the box as bounding box for the group solved the issue! thanks again for your suggestion! Now one good thing to add would be a blur so the emission density fade out instead of being high or low...
  3. customize pyro emitter

    Hey Dominik! thanks for your reply, your hip file is absolutely clear! only problem is I'm getting a bunch of error when I open it, and as a result it's only reading the low emission value. I suppose the issue is in the groupCombine as I have 0 points in "more" group, so no points are emitting more density P.S. I'm using H 15.5
  4. export velocity into vdb from pyro sim

    Hey All! I'm trying to write out some vdb caches from a pyro sim. As long as I plug the DOP Import into a VDB convert and then into a file everything looks great and I get my density for render. Problem is, now I want to write out velocities of the volume so I can later import it in a fresh scene to advect some particles. I can't find a way to enable the DOP import to get the velocity, so I'm plugging the DOP I/O which has all the field I need. BUT the cache is getting much much heavier in terms of disk space. I am writing out 4 scalar fields (density vel.x vel.y and vel.z) so I'm expecting the cache to be roughly 4 times bigger, but in my case frame 10 was around 2 Mb and now is 240 Mb any one with some ideas? Thanks in advance! here some screens of how I'm setting this
  5. export velocity into vdb from pyro sim

    Hey Gavin, you mean to get the velocity grid only where I have density above 0? any idea how to achieve that?
  6. export velocity into vdb from pyro sim

    Hi Anthony, thanks for your reply! you were right, the voxels for vel are basically filling up the bounding box of the volume in a few frames (I guess the reasons are collisions with geos) , while the density is very limited (I've attached 2 images for comparison) Now I'm looking for a reasonable way of getting the velocity info without filling up the disks! I guess I can VDBresample vel field before writing it out to maybe a 10 times lower resolution field grid so I get the velocities I need , although I'm not getting the fine details...