Version 5.0 The LEDA User Manual

int p.orientation(const real point& q, const real point& r)
returns orientation(p, q, r) (see below).
real p.area(const real point& q, const real point& r)
real p.sqr dist(const real point& q)
returns area(p, q, r) (see below).
returns the square of the Euclidean distance between p
and q.
int p.cmp dist(const real point& q, const real point& r)
real p.xdist(const real point& q)
real p.ydist(const real point& q)
real p.distance(const real point& q)
returns compare(p.sqr dist(q), p.sqr dist(r)).
returns the horizontal distance between p and q.
returns the vertical distance between p and q.
returns the Euclidean distance between p and q.
real p.distance( ) returns the Euclidean distance between p and (0, 0).
real point
real point
p.translate(real dx, real dy)
returns p translated by vector (dx, dy).
p.translate(double dx, double dy)
returns p translated by vector (dx, dy).
real point p.translate(const real vector& v)
returns p+v, i.e., p translated by vector v.
Precondition: v.dim() = 2.
real point
real point
p + const real vector& v
returns p translated by vector v.
p − const real vector& v
returns p translated by vector −v.
real point p.rotate90(const real point& q, int i = 1)
returns p rotated about q by an angle of i × 90 degrees.
If i > 0 the rotation is counter-clockwise otherwise it is
clockwise.
real point p.rotate90(int i = 1) returns p.rotate90(real point(0, 0), i).