Version 5.0 The LEDA User Manual

d3 rat point random d3 rat point on unit circle(int D = 16383)
returns a point close to the unit circle whose coordinates
are random rationals of the form i/D where i
is a random integer in the range [0 .. D]. The default
value of D is 2 14 − 1.
void random d3 rat points on unit circle(int m, int D, list& L)
returns a list L of n points . . . .
void random d3 rat points on unit circle(int m, list& L)
d3 rat point random d3 rat point on sphere(int R)
returns a list L of n points . . . . The default value of
D is used.
returns a point with integer coordinates close to the
sphere with radius R centered at the origin.
void random d3 rat points on sphere(int m, int R, list& L)
returns a list L of n points . . . .
d3 rat point random d3 rat point on unit sphere(int D = 16383)
returns a point close to the unit sphere whose coordinates
are random rationals of the form i/D where i is a
random integer in the range [0 .. D]. The default value
of D is 2 14 − 1. In 2d this function is equivalent to
point on unit circle.
void random d3 rat points on unit sphere(int m, int D, list& L)
returns a list L of n points . . . .
void random d3 rat points on unit sphere(int m, list& L)
returns a list L of n points . . . . The default value of
D is used.
d3 rat point
random d3 rat point on paraboloid(int maxc)
returns a point (x, y, z) with x and y random integers
in the range [−maxc .. maxc], and z = 0.004 ∗ (x ∗ x +
y ∗ y) − 1.25 ∗ maxc. The function does not make sense
in 2d.
void random d3 rat points on paraboloid(int n, int maxc, list& L)
returns a list L of n points . . . .
void lattice d3 rat points(int n, int maxc, list& L)
returns a list L of approximately n points. The points
have integer coordinates id/maxc for an appropriately
chosen d and −maxc/d ≤ i ≤ maxc/d.