On 8/8/06, Brian Schott <[EMAIL PROTECTED]> wrote:
Two objects in 2 dimensional space are facing the same direction, say D degrees. How does one determine which object is on the left if the positions of the two objects A and B in 2D, are given as A and B, for example as follows?'A B' =: 2 1;1 _1 D =: 90 NB. facing to the East result: A is on the left 'A B' =: _1 0;1 1 D =: 0 NB. facing to the North result: A is on the left 'A B' =: _1 0;_1 0 D =: 0 NB. facing to the North result: A is on the left and on the right (undecided?) How does one compute such results?
-/ . * 0 0,B,:A Cheers, Boyko ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
