Version 5.0 The LEDA User Manual

ool l.project yz(rat line& m)
if the projection of l into the yz plane is not a point,
the function returns true and assignes the projection
to m. Otherwise false is returned.
bool l.project(const d3 rat point& p, const d3 rat point& q,
const d3 rat point& v, d3 rat line& m)
if the projection of l into the plane through (p, q, v)
is not a point, the function returns true and assignes
the projection to m. Otherwise false is returned.
d3 rat line
l.translate(integer dx, integer dy, integer dz, integer dw)
returns l translated by vector
(dx/dw, dy/dw, dz/dw).
d3 rat line l.translate(rat vector v)
returns l translated by v.
Precond. : v.dim( ) = 3.
d3 rat line
l + const rat vector& v
returns l translated by vector v.
d3 rat line
l − const rat vector& v
returns l translated by vector −v.
d3 rat line l.reflect(const d3 rat point& p, const d3 rat point& q,
const d3 rat point& v)
returns l reflected across the plane through (p, q, v).
d3 rat line l.reflect(const d3 rat point& p)
returns l reflected across point p.
d3 rat line l.reverse( ) returns l reversed.
rat vector l.to vector( ) returns point2 ( ) − point1 ( ).
bool l.intersection(const d3 rat segment& s)
decides, whether l and s intersect in a single point.
bool l.intersection(const d3 rat segment& s, d3 rat point& p)
bool l.intersection(const d3 rat line& m)
decides, whether l and s intersect in a single point. If
so, the point of intersection is assigned to p.
decides, whether l and m intersect in a single point.