wconstraint.as

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

/**
 * WOW-Engine AS3 3D Physics Engine, http://www.wow-engine.com
 * Copyright (c) 2007-2008 Seraf ( Jerome Birembaut ) http://seraf.mediabox.fr
 * 
 * Based on APE by Alec Cove , http://www.cove.org/ape/
 *       & Sandy3D by Thomas Pfeiffer, http://www.flashsandy.org/
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 * 
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 * 
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
*/
package fr.seraf.wow.constraint{


	/**
	 * The abstract base class for all constraints. 
	 * 
	 * <p>
	 * You should not instantiate this class directly -- instead use one of the subclasses.
	 * </p>
	 */
	public class WConstraint {

	
		private var _stiffness:Number;


		/** 
		 * @private
		 */
		public function WConstraint(stiffness:Number) {
			
			this.stiffness = stiffness;
		}

		/**
		 * The stiffness of the constraint. Higher values result in result in 
		 * stiffer constraints. Values should be greater than 0 and less than or 
		 * equal to 1. Depending on the situation, setting constraints to very high 
		 * values may result in instability or unwanted energy.
		 */

		public function get stiffness():Number {
			return _stiffness;
		}
		/**
		 * @private
		 */
		public function set stiffness(s:Number):void {
			_stiffness = s;
		}

		/**
		 * @private
		 */
		public function resolve():void {
		}
	}
}