/*********************************************************************
	
	=== Geometory Two-Dimension ===
	
	* Dimension [ Dimension.js ]
	
	* updated 2001/05/28
	
	mail : peace@skipup.com
	home : http://www.skipup.com/~peace/
	
*********************************************************************/



// public class Dimension extends Object
function Dimension(){
	
	// protected object
	this.x ;
	this.y ;
	
	/****************************** CONSTRUCTOR - BEGIN ******************************/
	
	var a = arguments ;
	
	switch( a.length ){
		case 0 : default : this.x = this.y = 0 ; break ;
		case 1 : { // Dimension || Array || other
			var o = a[0];
			if( typeof o == "object" ){
				if( o.constructor == Dimension ){ // Dimension
					this.x = o.x ;
					this.y = o.y ;
				}else if( o.constructor == Array ){ // Array
					this.x = o[0];
					this.y = o[1];
				}
			}else{ // other
				this.x = this.y = o ;
			}
			break ;
		}
		case 2 : { // number , number || other
			this.x = a[0];
			this.y = a[1];
			break ;
		}
	}
	
	/****************************** CONSTRUCTOR - E N D ******************************/
	
}

function setBasicMember__Dimension__(){
	
	var D  = Dimension ;
	var DP = D.prototype ;
	
	/****************************** SET_MEMBER - BEGIN ******************************/
	
	// public void
	DP.set = function(){
		var a = arguments ;
		var p ;
		switch( a.length ){
			case 0 : default : p = new D(); break ;
			case 1 : p = new D( a[0] ); break ;
			case 2 : p = new D( a[0] , a[1] ); break ;
		}
		this.x = p.x ;
		this.y = p.y ;
	};
	DP.setX = function( x ){ this.x = x ; };
	DP.setY = function( y ){ this.y = y ; };
	
	// public object
	DP.getX = function(){ return this.x ; };
	DP.getY = function(){ return this.y ; };
	
	// public Array
	DP.toArray = function(){ return new Array( this.x , this.y ); };
	
	// public Dimension
	DP.toInteger = function(){ return new D( Math.floor( this.x ) , Math.floor( this.y ) ); };
	
	// public boolean
	DP.equals    = function( p ){ return ( this.x == p.x && this.y == p.y ); };
	DP.intEquals = function( p ){ return ( this.toInteger().equals( p.toInteger() ) ); };
	
	// public boolean
	DP.isNaN = function(){ return ( isNaN( this.x ) || isNaN( this.y ) || this.x == "" || this.y == "" ); };
	
	// public double
	DP.distance = function( p ){
		if( p ){
			var q = new D( this );
			q.sub( p );
			return q.distance();
		}else{
			return Math.sqrt( Math.pow( this.x , 2 ) + Math.pow( this.y , 2 ) );
		}
	};
	
	// public double
	DP.mulin = function( p ){ return this.x*p.x+this.y*p.y ; };
	
	// public double
	DP.max = function(){ return Math.max( this.x , this.y ); };
	DP.min = function(){ return Math.min( this.x , this.y ); };
	
	// public double
	DP.angle = function( p ){ return p ? Math.abs( this.angle()-p.angle() ) : Math.acos( this.x/this.distance() ) ; };
	
	// public void
	DP.absolute = function(){
		this.x = Math.abs( this.x );
		this.y = Math.abs( this.y );
	};
	
	// public void
	DP.scale = function( v ){
		this.x *= v ;
		this.y *= v ;
	};
	
	// public void
	DP.add = function( p ){
		var d = new D( p );
		this.x += d.x ;
		this.y += d.y ;
	};
	DP.sub = function( p ){
		var d = new D( p );
		this.x -= d.x ;
		this.y -= d.y ;
	};
	
	// public string
	DP.toString = function(){ return "Dimension : ( "+this.x+" , "+this.y+" )"; };
	
	/****************************** SET_MEMBER - E N D ******************************/
	
} setBasicMember__Dimension__();