SDF & the rest of the computation needs to be in the same units.

[Algomorph]

This would mean that if we keep SDF units as 1.0 = 10 voxels, we would need to adjust the grid spacing accordingly.

[Algomorph]

Tried in a separate branch to convert SDF units to voxels, it doesn't really work well, i.e. cannot get things to converge properly so far.

[Algomorph]

Keeping open for now -- might do more experiments later. So far it seems like scaling the SDF values would just scale the gradients, so I'm not sure how this is different from just jacking up the weights.