How feasible is Mesh => []Voxel conversion?

Have you considered providing a func (m *Mesh) ToVoxels(box Box, nx, ny, nz int) []Voxel
where nx, ny, and nz are the number of voxels in the X, Y, and Z directions (enclosed by the provided bounding box)?

That way, a mesh could be voxelized at any desired resolution by subdividing the conversion into smaller boxes and recombining them later.