
L.Polygon.include(!L.Path.CANVAS ? {} : {
	_containsPoint: function(p) {
		var inside = false,
			part, p1, p2,
			i, j, k, 
			len, len2;

		// TODO optimization: check if within bounds first
		
		if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
			// click on polygon border
			return true;
		}

		// ray casting algorithm for detecting if point is in polygon
		
		for (i = 0, len = this._parts.length; i < len; i++) {
			part = this._parts[i];
			
			for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
				p1 = part[j];
				p2 = part[k];
				
				if (((p1.y > p.y) != (p2.y > p.y)) && 
						(p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
					inside = !inside;
				}
			}
		}
		
		return inside;
	}
});