approximate_polygon(coords, tolerance)
It is based on the Douglas-Peucker algorithm.
Note that the approximated polygon is always within the convex hull of the original polygon.
Coordinate array.
Maximum distance from original points of polygon to approximated polygonal chain. If tolerance is 0, the original coordinate array is returned.
Approximated polygonal chain where M <= N.
Approximate a polygonal chain with the specified tolerance.
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