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bool
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s.operator== ( q)
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Test for equality: Two segments are equal, iff their sources and
targets are equal.
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bool
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s.operator!= ( q)
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Test for inequality.
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Point_2<Kernel>
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s.source ()
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returns the source of s.
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Point_2<Kernel>
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s.target ()
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returns the target of s.
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Point_2<Kernel>
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s.min ()
|
returns the point of s with lexicographically smallest coordinate.
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Point_2<Kernel>
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s.max ()
|
returns the point of s with lexicographically largest coordinate.
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Point_2<Kernel>
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s.vertex ( int i)
|
returns source or target of s: vertex(0) returns
the source of s, vertex(1) returns the target of s.
The parameter i is taken modulo 2, which gives
easy access to the other vertex.
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Point_2<Kernel>
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s.point ( int i)
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returns vertex(i).
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Point_2<Kernel>
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s.operator[] ( int i)
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returns vertex(i).
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Kernel::FT
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s.squared_length ()
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returns the squared length of s.
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Direction_2<Kernel>
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s.direction ()
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returns the direction from source to target of s.
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|
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Vector_2<Kernel>
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s.to_vector ()
|
returns the vector s.target() - s.source().
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|
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Segment_2<Kernel>
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s.opposite ()
|
returns a segment with source and target point interchanged.
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|
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Line_2<Kernel>
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s.supporting_line ()
|
returns the line l passing through s. Line l has the
same orientation as segment s.
|
2, i.e. a
straight line segment [p,q] connecting two points p,q ∈ ℝ2.
The segment is topologically closed, i.e. the end
points belong to it. Point p is called the source and q
is called the target of s. The length of s is the
Euclidean distance between p and q. Note that there is only a function
to compute the square of the length, because otherwise we had to
perform a square root operation which is not defined for all
number types, which is expensive, and may not be exact.