/*
  * Copyright (c) 2006-2007 Erin Catto 
* 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.
*/

// The pair manager is used by the broad-phase to quickly add/remove/find pairs
// of overlapping proxies. It is based closely on code provided by Pierre Terdiman.
// http:

var b2Pair = Class.create();
b2Pair.prototype = 
{

        SetBuffered: function()        { this.status |= b2Pair.e_pairBuffered; },
        ClearBuffered: function()        { this.status &= ~b2Pair.e_pairBuffered; },
        IsBuffered: function(){ return (this.status & b2Pair.e_pairBuffered) == b2Pair.e_pairBuffered; },

        SetRemoved: function()                { this.status |= b2Pair.e_pairRemoved; },
        ClearRemoved: function()        { this.status &= ~b2Pair.e_pairRemoved; },
        IsRemoved: function(){ return (this.status & b2Pair.e_pairRemoved) == b2Pair.e_pairRemoved; },

        SetFinal: function()                { this.status |= b2Pair.e_pairFinal; },
        IsFinal: function(){ return (this.status & b2Pair.e_pairFinal) == b2Pair.e_pairFinal; },

        userData: null,
        proxyId1: 0,
        proxyId2: 0,
        next: 0,
        status: 0,

        // STATIC

        // enum

        initialize: function() {}};
b2Pair.b2_nullPair = b2Settings.USHRT_MAX;
b2Pair.b2_nullProxy = b2Settings.USHRT_MAX;
b2Pair.b2_tableCapacity = b2Settings.b2_maxPairs;
b2Pair.b2_tableMask = b2Pair.b2_tableCapacity - 1;
b2Pair.e_pairBuffered = 0x0001;
b2Pair.e_pairRemoved = 0x0002;
b2Pair.e_pairFinal = 0x0004;



  *
  * 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.
  */
  
  // The pair manager is used by the broad-phase to quickly add/remove/find pairs
  // of overlapping proxies. It is based closely on code provided by Pierre Terdiman.
  // var b2Pair = Class.create();
b2Pair.prototype = 
{

        SetBuffered: function()        { this.status |= b2Pair.e_pairBuffered; },
        ClearBuffered: function()        { this.status &= ~b2Pair.e_pairBuffered; },
        IsBuffered: function(){ return (this.status & b2Pair.e_pairBuffered) == b2Pair.e_pairBuffered; },

        SetRemoved: function()                { this.status |= b2Pair.e_pairRemoved; },
        ClearRemoved: function()        { this.status &= ~b2Pair.e_pairRemoved; },
        IsRemoved: function(){ return (this.status & b2Pair.e_pairRemoved) == b2Pair.e_pairRemoved; },

        SetFinal: function()                { this.status |= b2Pair.e_pairFinal; },
        IsFinal: function(){ return (this.status & b2Pair.e_pairFinal) == b2Pair.e_pairFinal; },

        userData: null,
        proxyId1: 0,
        proxyId2: 0,
        next: 0,
        status: 0,

        // STATIC

        // enum

        initialize: function() {}};
b2Pair.b2_nullPair = b2Settings.USHRT_MAX;
b2Pair.b2_nullProxy = b2Settings.USHRT_MAX;
b2Pair.b2_tableCapacity = b2Settings.b2_maxPairs;
b2Pair.b2_tableMask = b2Pair.b2_tableCapacity - 1;
b2Pair.e_pairBuffered = 0x0001;
b2Pair.e_pairRemoved = 0x0002;
b2Pair.e_pairFinal = 0x0004;



  
  var b2Pair = Class.create();
  b2Pair.prototype = 
  {
  
          SetBuffered: function()        { this.status |= b2Pair.e_pairBuffered; },
          ClearBuffered: function()        { this.status &= ~b2Pair.e_pairBuffered; },
          IsBuffered: function(){ return (this.status & b2Pair.e_pairBuffered) == b2Pair.e_pairBuffered; },
  
          SetRemoved: function()                { this.status |= b2Pair.e_pairRemoved; },
          ClearRemoved: function()        { this.status &= ~b2Pair.e_pairRemoved; },
          IsRemoved: function(){ return (this.status & b2Pair.e_pairRemoved) == b2Pair.e_pairRemoved; },
  
          SetFinal: function()                { this.status |= b2Pair.e_pairFinal; },
          IsFinal: function(){ return (this.status & b2Pair.e_pairFinal) == b2Pair.e_pairFinal; },
  
          userData: null,
          proxyId1: 0,
          proxyId2: 0,
          next: 0,
          status: 0,
  
          // STATIC
  
          // enum
  
          initialize: function() {}};
  b2Pair.b2_nullPair = b2Settings.USHRT_MAX;
  b2Pair.b2_nullProxy = b2Settings.USHRT_MAX;
  b2Pair.b2_tableCapacity = b2Settings.b2_maxPairs;
  b2Pair.b2_tableMask = b2Pair.b2_tableCapacity - 1;
  b2Pair.e_pairBuffered = 0x0001;
  b2Pair.e_pairRemoved = 0x0002;
  b2Pair.e_pairFinal = 0x0004;