There was some activity with SDF at blender devtalk: https://devtalk.blender.org/t/sdf-functions/11055 and the "actual" development discusion is here: https://blenderartists.org/t/sdfs-system-for-blender/1524372 And there is an interesting thread about some (general) SDF tools and(/but also) blender SDF addons on:…