AUTHOR:
bcava@maptech.com

ABOUT:
Determines if point (x,y) is inside polygon (x1,y1, x2,y2, x3,y3, ... xn,yn)

USAGE:
<CFX_POINTINPOLY
	POINT  = "x,y"
	POINTS = "x1,y1, x2,y2, x3,y3, ... xn,yn">

RETURNS VARIABLE:
	INPOLY

EXAMPLE:
<CFX_POINTINPOLY
	POINT  = "0,0"
	POINTS = "1,1, 1,-1, -1,-1, -1,1">

Point is <CFIF INPOLY> inside <CFELSE> outside </CFIF> the polygon.

OUTPUTS:

Point is inside the polygon.

NOTES:
- Polygon must have at least 3 sides.
- (x,y) points may be (lat,lon) points in decimal degrees