Implementation in ruby of the algorithm found in Point in Polygon Winding Number Inclusion

Usage

require "pinp"
points = []
points << Pinp::Point.new(0,0)
points << Pinp::Point.new(20,0)
points << Pinp::Point.new(20,20)
points << Pinp::Point.new(0,20)

pgon = Pinp::Polygon.new points
puts pgon.contains_point? Pinp::Point.new(10, 10)
puts pgon.contains_point? Pinp::Point.new(20.1 ,10)

###Todo

• more testing
• add option to test if point is on any edge of the polygon