Version 5.0 The LEDA User Manual

at point p.reflect(const rat point& p, const rat point& q)
rat point p.reflect(const rat point& q)
returns p reflected across the straight line passing through
p and q.
Precondition: p ≠ q.
returns p reflected across point q.
rat point
rat point
p.translate(const rational& dx, const rational& dy)
returns p translated by vector (dx, dy).
p.translate(integer dx, integer dy, integer dw)
returns p translated by vector (dx/dw, dy/dw).
rat point p.translate(const rat vector& v)
returns p + v, i.e., p translated by vector v.
Precondition: v.dim() = 2.
rat point
rat point
p + const rat vector& v
returns p translated by vector v.
p − const rat vector& v
returns p translated by vector −v.
rational p.sqr dist(const rat point& q)
returns the squared distance between p and q.
int p.cmp dist(const rat point& q, const rat point& r)
returns compare(p.sqr dist(q), p.sqr dist(r)).
rational p.xdist(const rat point& q)
returns the horizontal distance between p and q.
rational p.ydist(const rat point& q)
returns the vertical distance between p and q.
int p.orientation(const rat point& q, const rat point& r)
returns orientation(p, q, r) (see below).
rational p.area(const rat point& q, const rat point& r)
returns area(p, q, r) (see below).
rat vector
p − const rat point& q
returns the difference vector of the coordinates.
Non-Member Functions