Can someone ELI5 as to how this gathers the spatial data for the samples? In my ignorance, it doesn't seem clear to me as to how this works. I get that you wo

Can someone ELI5 as to how this gathers the spatial data for the samples? In my ignorance, it doesn't seem clear to me as to how this works. I get that you would be gathering different volume data with each dip but it seems to me that this information would look like a graph that rises and falls back to zero. In the video, they showed each dip as gathering an accurate 2d cross section of the object. For instance, the 2d slices of the elephant on each dip graph. They seem to be able to shape a closed 2d polygon slice per dip and it is mystifying to me. Am i missing a part of the process or what? Is there some imaging going on as well on top of the volumetric sampling? Edit: I should add that this really impresses me regardless of how they do it. Ive always thought it was a pretty big bummer how optical 3d scanning looks so incomplete in a lot of cases.