Point add/subtract/divideBy

spec/suites/geometry/PointSpec.js

@@ -14,4 +14,10 @@ describe("Point", function() {
 			expect(p.y).toEqual(3);
 		});
 	});
+	
+	describe('#subtract', noSpecs);
+	
+	describe('#add', noSpecs);
+	
+	describe('#divideBy', noSpecs);
 });

src/geometry/Point.js

@@ -5,4 +5,18 @@
 L.Point = function(/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
 	this.x = (round ? Math.round(x) : x);
 	this.y = (round ? Math.round(y) : y);
+};
+
+L.Point.prototype = {
+	add: function(point) {
+		return L.Point(this.x + point.x, this.y + point.y);
+	},
+		
+	subtract: function(point) {
+		return L.Point(this.x - point.x, this.y - point.y);
+	},
+	
+	divideBy: function(num, round) {
+		return L.Point(this.x/2, this.y/2, round);
+	}
 };