vector2d.jsc

《JavaScript王者归来》examples.rar

# language: javascript2

package akira.js2{

	import js.lang.JObject;
	import js.lang.System;

	//Vector is an internal class, it can be visited in this jsc_doc only.
	internal class Vector extends JObject
	{
		function Vector()
		{
			
		}
	}

	public class Vector2D extends Vector
	{
		private var x = 0;
		private var y = 0;
		const ZERO = 0;

		function Vector2D(x, y)
		{
			this.x = x != null ? x : Vector2D.ZERO;
			this.y = y != null ? y : Vector2D.ZERO;
		}

		public function toString()
		{
			return "[" + this.x + "," + this.y + "]<vector>";
		}

		public get X()
		{
			return this.x;
		}

		public get Y()
		{
			return this.y;
		}

		public function add(v:Vector2D)
		{
			//v.x is not supported now, the private members only can be visited by 'this' 
			var ret = new Vector2D(v.getX() + this.x, v.getY() + this.y);

			return ret;
		}

		//Overload functons
		public function mul(n:Number)
		{
			return new Vector2D(this.x * n , this.y * n);
		}

		public function mul(v:Vector2D)
		{
			return this.x * v.getX() + this.y * v.getY();
		}
	}
}