They can certainly be generalized to voxel space, though I personally prefer the simplicity of the 1D case as a toy mental model. You can check out chapter 5 in

They can certainly be generalized to voxel space, though I personally prefer the simplicity of the 1D case as a toy mental model. You can check out chapter 5 in NKS: https://www.wolframscience.com/nks/chap-5--two-dimensions-and-beyond/ https://www.wolframscience.com/nks/chap-5--two-dimensions-an...