coordinatetools.as.svn-base

一个2D基于verlet的Flash物理引擎。它用AS3编写而成。Fisix的目标是应用到游戏等计算量很大的实时应用中。尽管flash比c/c++要慢,很棒的物理引擎

/**
* @private
*/
/*
Copyright (c) 2007 John Grden

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions
of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

package org.papervision3d.core.components.as3.utils
{
	import flash.display.DisplayObject;
	import flash.geom.Point;
	
	public class CoordinateTools
	{
		public static function localToLocal(containerFrom:DisplayObject, containerTo:DisplayObject, origin:Point=null):Point
		{
			var point:Point = origin ? origin : new Point();
			point = containerFrom.localToGlobal(point);
			point = containerTo.globalToLocal(point);
			return point;
		}
		
		// zero based random range returned
		public static function random(range:Number):Number
		{
			return Math.floor(Math.random()*range);
		} 
	}
}