geomutils.as

flex 实现的一个showcase 喜欢flex的朋友可以

package com.teknision.utils
{
	import flash.geom.*;
	
	public class GeomUtils{
		
		public static function getResizedBoxThatFits(current_size:Point,max_size:Point):Point{
			var r_point:Point;
			if(current_size.x<=max_size.x && current_size.y<=max_size.y){
				r_point=current_size;
			}else{
				var n_point:Point=new Point();
				
				var xdif=current_size.x-max_size.x;
				var ydif=current_size.y-max_size.y;
				
				var max:Number=Math.max(xdif,ydif);
				var scaleratio:Number=1;
				
				if(max==xdif){
					scaleratio=max_size.x/current_size.x;
				}else{
					scaleratio=max_size.y/current_size.y;
				}
				
				n_point.x=current_size.x*scaleratio;
				n_point.y=current_size.y*scaleratio;
				
				r_point=n_point;
			}
			
			return r_point;
		}
		
	}
}