sanostol Posted August 26, 2013 Share Posted August 26, 2013 (edited) The vdbfromparticles1SOP looks great, but I encountered a little problem, not sure if i got it right, but now if I use a point attribute to drive the density the sphere around the point seems empty, if I use the normal density checkbox it looks solid But for my case I want to fade out over lifetime. I attached a file demonstrating the effect particle2vdb.hip Edited August 26, 2013 by sanostol Quote Link to comment Share on other sites More sharing options...
ikarus Posted August 27, 2013 Share Posted August 27, 2013 Why do you need to use the density checkbox? Looks like what you have works fine. Quote Link to comment Share on other sites More sharing options...
sanostol Posted August 28, 2013 Author Share Posted August 28, 2013 mh, but it looks hollow Quote Link to comment Share on other sites More sharing options...
freaq Posted August 29, 2013 Share Posted August 29, 2013 vdb's are sparse so they only store a shell around where the limit surface would be. that is probably why. or is there something else going on? Quote Link to comment Share on other sites More sharing options...
Skybar Posted August 30, 2013 Share Posted August 30, 2013 The VDB From Polygons has the option to "Fill Interior", doesn't seem to exist on the particle one though. I don't know if it is appropriate for what you are going to do with it, but you could increase the Half-band as well as lowering the Point Radius Scale - that seems to give you a non-hollow volume. Quote Link to comment Share on other sites More sharing options...
jkunz07 Posted August 30, 2013 Share Posted August 30, 2013 I think using the volume rasterize points node should give you what your after. I've attached a file. pscale affects the scale of the sphere stamped into the volume density affects the density of the sphere stamped into the volume Another advantage to this is that overlapping particle's density will be added, so if you have 10 particles all in the same position they will be much denser then just one particle. vdb_rasterize_points.hip Quote Link to comment Share on other sites More sharing options...
sanostol Posted August 30, 2013 Author Share Posted August 30, 2013 Thank You, will have a look Quote Link to comment Share on other sites More sharing options...
sanostol Posted September 13, 2013 Author Share Posted September 13, 2013 works quite well, but the vdbfromparticle has the option to blur with velocity Quote Link to comment Share on other sites More sharing options...
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