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point class.
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class used for doing computations on point and vector coordinates
(has to fulfill fieldtype requirements).
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AdaptableBinaryFunction class: Point_2
Point_2 Point_2. It returns the point
that results from adding the vectors corresponding to both
arguments.
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AdaptableBinaryFunction class: Point_2
FT Point_2. Scale(p,k) returns
the point that results from scaling the vector corresponding to
p by a factor of k.
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AdaptableUnaryFunction class: Point_2
FT. It returns the coordinate of p with largest
absolute value.
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AdaptableBinaryFunction class: Point_2
Point_2 bool. It returns true,
iff the angle of the direction corresponding to the first argument
with respect to the positive -axis is less than the
angle of the direction corresponding to the second argument.
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| return origin (neutral element for the Sum operation). |