ccw function

Counter Clockwise Whorl

Counter Clockwise Whorl

Used for determining if points are in polygons.

ccw(p0, p1, p2)

Arguments

  • p0: point 0
  • p1: point 1
  • p2: point 2

Returns

returns 1 or 0 depending on position of points

Author(s)

Jonathan M. Lees jonathan.lees@unc.edu

See Also

Lintersect

Examples

l1 = list(p1=list(x=0, y=0), p2=list(x=1,y=1)) l2 = list(p1=list(x=6, y=4), p2=list(x=-1,y=-12)) ccw(l1$p1, l1$p2, l2$p1)
  • Maintainer: Jonathan M. Lees
  • License: GPL (>= 2)
  • Last published: 2024-07-09

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