/*
* Copyright (c) 2006-2007 Erin Catto http:
*
* 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, and must not be
* misrepresented the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/

/**
 * A gear joint is used to connect two joints together. 
 * 
 * Either joint can be a revolute or prismatic joint. You specify a gear ratio
 * to bind the motions together:
 * coordinate1 + ratio * coordinate2 = constant
 * 
 * The ratio can be negative or positive. If one joint is a revolute joint
 * and the other joint is a prismatic joint, then the ratio will have units
 * of length or units of 1/length.
 * 
 * RESTRICITON: The revolute and prismatic joints must be attached to
 * a fixed body (which must be body1 on those joints).
 * 
 * @class b2GearJointDef
 * @constructor
 */
var b2GearJointDef = function () {
    this.type = b2Joint.e_gearJoint;
	this.joint1 = null;
	this.joint2 = null;
	this.ratio = 1.0;
};
Object.extend(b2GearJointDef.prototype, b2JointDef.prototype);
Object.extend(b2GearJointDef.prototype, 
{
	joint1: null,
	joint2: null,
	ratio: null
});