Whether placement was set on the moving mesh.
The smallest eigenvalue of the solver's normal equations over the largest
at the last step, in [0, 1]; 0 when no step ran. Geometry only, with no
reference to noise: a low value warns of a weak motion, but a high one does
not show that it is determined. That is undetermined.
status === "converged". ICP is local, so this says the iteration settled
and the data determine the result locally, not that it found the right
alignment: a far guess can settle in a wrong minimum. maxRmse guards
applying against that.
Sampled points used at placement: the rest were trimmed or out of range.
Solver steps taken.
The rmse limit that applied (world units).
Why it was not; null exactly when applied.
The moving mesh's aligned placement, with its scale unchanged: the converged result, or the best estimate when it did not converge.
The root mean square distance (world units) from the used points to the
fixed mesh at placement; Infinity when no point has a closest point.
Points of the moving mesh sampled.
Why iteration stopped.
The motions the data do not determine; non-empty only when "underconstrained".
What Scene.register found.