b6e26a410c
This commit adds a node to distribute points inside of volume grids. The "Random" mode usese OpenVDB's "point scatter" implementation, and there is also a "Grid" mode for uniform distributions. Both methods operate on all of the float grids in the volume, using every voxel with a value higher than the threshold. The random method is not stable as the input volume deforms. Based on a patch by Angus Stanton (@abstanton), which was based on a patch by Kenzie (@kenziemac130). Differential Revision: https://developer.blender.org/D15375