artist-find-octant

artist-find-octant is a compiled Lisp function in `artist.el'.

(artist-find-octant X1 Y1 X2 Y2)

Find octant for a line from X1,Y1 to X2,Y2.
Octant are numbered 1--8, anti-clockwise as:

\3|2/
4\|/1
---+---
5/|\8
/6|7\