?? point2d.jsc
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# language: javascript2
package akira.js2{
import js.lang.JObject;
import js.lang.System;
import akira.js2.Vector2D;
//Point is an internal class, it can be visited in this jsc_doc only.
internal class Point extends JObject
{
function Point()
{
}
}
public class Point2D extends Point
{
private var x = 0;
private var y = 0;
//constants
const ZERO = 0;
function Point2D(x, y)
{
this.x = x != null ? x : Point2D.ZERO;
this.y = y != null ? y : Point2D.ZERO;
}
public function toString()
{
return "(" + this.x + "," + this.y + ")<point>";
}
public get X()
{
return this.x;
}
public get Y()
{
return this.y;
}
//class converter, support as statement
public function convert(type)
{
if(type == Vector2D)
return new Vector2D(this.x, this.y);
}
public function toVector()
{
//test as statement
var v = this as Vector2D;
return v;
}
//pointA + vectorA = moves the point through a path def by vectorA
public function add(v:Vector2D)
{
return new Point2D(this.x + v.getX(), this.y + v.getY());
}
public function sub(v:Vector2D)
{
return new Point2D(this.x - v.getX(), this.y - v.getY());
}
//pointA - pointB = vector(A, B);
public function sub(p:Point2D)
{
return new Vector2D(this.x - p.getX(), this.y - p.getY());
}
}
}
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