haggi Posted January 25, 2017 Share Posted January 25, 2017 Hi, I have a large volume where most of the volume has no density but some velocity. I want to export vdb's and to save disk space I want eliminate the velocity where I have no density. I found a way by using a volumeVelocity sop where I use my density as a mask, but I'm quite sure that there is an simpler way. I tried to do it in a convertVdb where I use the density vdb as a mask for the velocity vdb, but this had not influence on the velocity vdb. So the question is: What is the most efficient way to mask a velocity volume with a density volume (or vdb)? Can't post a hipfile at the moment, sorry. Quote Link to comment Share on other sites More sharing options...
Skybar Posted January 25, 2017 Share Posted January 25, 2017 I usually do it like this: vdb_maskvel_dv.hip 5 2 Quote Link to comment Share on other sites More sharing options...
haggi Posted January 25, 2017 Author Share Posted January 25, 2017 Thanks a lot, interesting approach and with a lot of comments. Very cool, this helps a lot! Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted March 29, 2019 Share Posted March 29, 2019 Hey Skybar, thanks for the setup. With all the sticknotes this is a trully advanced VDB class Quote Link to comment Share on other sites More sharing options...
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