51 lines
1.7 KiB
JavaScript
51 lines
1.7 KiB
JavaScript
/*
|
|
* 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).
|
|
|
|
var b2GearJointDef = Class.create();
|
|
Object.extend(b2GearJointDef.prototype, b2JointDef.prototype);
|
|
Object.extend(b2GearJointDef.prototype,
|
|
{
|
|
initialize: function()
|
|
{
|
|
this.type = b2Joint.e_gearJoint;
|
|
this.joint1 = null;
|
|
this.joint2 = null;
|
|
this.ratio = 1.0;
|
|
},
|
|
|
|
joint1: null,
|
|
joint2: null,
|
|
ratio: null});
|
|
|