Hull 指令

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Hull[ <List of Points> , <Percentage> ]

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Hull[ <List of Points> , <Percentage p> ]

Creates a characteristic hull of the points as described in Efficient generation of simple polygons for characterizing the shape of a set of points in the plane. For p=1, result is the same as the result of ConvexHull Command. The lower percentage, the lower area of the hull. For p=0 the area of resulting shape is not necessarily minimal.

Returned object is a locus, so it is auxiliary.

備註： Values of p greater than 1 are treated as 1, values less than 0 are treated as 0.