On 21 April 2010 21:22, Raul Miller <[email protected]> wrote: > How are r1 and r2 chosen?
r2 is to the left of r1. B has only two neighbour vertices, say C and D. If CBD is cw, r1 is from B towards C, and r2 from B towards D; and v.v. when CBD is ccw. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
