find the convex hull enclosing the given points
list or set of points
The convex hull of a set ps of points is the smallest convex polygon P for which each point in ps is either on the boundary of P or in its interior.
The result is returned as a list of points (vertices) of the convex polygon P in counter-clockwise order.
The routine uses an n⁢log⁡n algorithm computing tangents of pairs of points.
For an equivalent command with a few more options, see simplex[convexhull]. Input and output are simple points rather than geometric points, and the output can be the area enclosed in the polygon, the points defining the vertices, or a plot of the polygon.
The command with(geometry,convexhull) allows the use of the abbreviated form of this command.
hullname ≔ convexhull⁡A,B,C,F,E1
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