Whatsinaname Posted April 29, 2020 Share Posted April 29, 2020 (edited) Hiya, In order to make the bounding boxes for my density and my velocity volumes the same size, I thought multiplying vel by density would be a good idea. In theory it was... After this multiplication, the vel volume's bbox ist still 1 px larger than the density bbox, and that goes for every dimension. Why is that so? Edited April 30, 2020 by Whatsinaname solved Quote Link to comment Share on other sites More sharing options...
anim Posted April 29, 2020 Share Posted April 29, 2020 (edited) it's because in the old Smoke Solver vel is voxel face sampled and density is voxel center sampled so their actual voxel grids are not only misaligned from each other, but also all 3 grids within vel are misaligned from each other, there was a reason for that historically you can sim vel as center sampled by changing Smoke Object/InitialData/VelocitySampling to Center but new Smoke Object (Sparse), whether you sim sparsely or not has it set to Center by default Edited April 29, 2020 by anim 1 1 Quote Link to comment Share on other sites More sharing options...
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