Version 5.0 The LEDA User Manual

ool s.intersection(const real segment& t, real point& p)
if s and t intersect in a single point this point is assigned
to p and the result is true, otherwise the result is false.
bool s.intersection of lines(const real segment& t, real point& p)
real segment s.translate(real dx, real dy)
real segment s.translate(const real vector& v)
real segment s + const real vector& v
real segment s − const real vector& v
if line(s) and line(t) intersect in a single point this point
is assigned to p and the result is true, otherwise the result
is false.
returns s translated by vector (dx, dy).
returns s + v, i.e., s translated by vector v.
Precondition: v.dim() = 2.
returns s translated by vector v.
returns s translated by vector −v.
real segment s.perpendicular(const real point& p)
real s.distance(const real point& p)
real s.sqr dist(const real point& p)
returns the segment perpendicular to s with source p and
target on line(s).
returns the Euclidean distance between p and s.
returns the squared Euclidean distance between p and s.
real s.distance( ) returns the Euclidean distance between (0, 0) and s.
real segment s.rotate90(const real point& q, int i = 1)
real segment s.rotate90(int i = 1)
returns s rotated about q by an angle of i × 90 degrees.
If i > 0 the rotation is counter-clockwise otherwise it is
clockwise.
returns s.rotate90(s.source(),i).
real segment s.reflect(const real point& p, const real point& q)
real segment s.reflect(const real point& p)
returns s reflected across the straight line passing through
p and q.
returns s reflected across point p.