Return true if two polygons have boundaries that are within "max_error"
of each other along their entire lengths. More precisely, there must be
a bijection between the two sets of loops such that for each pair of
loops, "a_loop->BoundaryNear(b_loop)" is true.
Return true if two polygons have boundaries that are within "max_error" of each other along their entire lengths. More precisely, there must be a bijection between the two sets of loops such that for each pair of loops, "a_loop->BoundaryNear(b_loop)" is true.