﻿/*
* Farseer Physics Engine based on Box2D.XNA port:
* Copyright (c) 2010 Ian Qvist
* 
* Box2D.XNA port of Box2D:
* Copyright (c) 2009 Brandon Furtwangler, Nathan Furtwangler
*
* Original source Box2D:
* Copyright (c) 2006-2009 Erin Catto http://www.gphysics.com 
* 
* 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. 
*/

using System;

namespace FarseerPhysics.Common
{
    public struct FixedArray2<T>
    {
        private T _value0;
        private T _value1;

        public T this[int index]
        {
            get
            {
                switch (index)
                {
                    case 0:
                        return _value0;
                    case 1:
                        return _value1;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
            set
            {
                switch (index)
                {
                    case 0:
                        _value0 = value;
                        break;
                    case 1:
                        _value1 = value;
                        break;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
        }
    }

    public struct FixedArray3<T>
    {
        private T _value0;
        private T _value1;
        private T _value2;

        public T this[int index]
        {
            get
            {
                switch (index)
                {
                    case 0:
                        return _value0;
                    case 1:
                        return _value1;
                    case 2:
                        return _value2;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
            set
            {
                switch (index)
                {
                    case 0:
                        _value0 = value;
                        break;
                    case 1:
                        _value1 = value;
                        break;
                    case 2:
                        _value2 = value;
                        break;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
        }
    }

    public struct FixedArray4<T>
    {
        private T _value0;
        private T _value1;
        private T _value2;
        private T _value3;

        public T this[int index]
        {
            get
            {
                switch (index)
                {
                    case 0:
                        return _value0;
                    case 1:
                        return _value1;
                    case 2:
                        return _value2;
                    case 3:
                        return _value3;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
            set
            {
                switch (index)
                {
                    case 0:
                        _value0 = value;
                        break;
                    case 1:
                        _value1 = value;
                        break;
                    case 2:
                        _value2 = value;
                        break;
                    case 3:
                        _value3 = value;
                        break;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
        }
    }

    public struct FixedArray8<T>
    {
        private T _value0;
        private T _value1;
        private T _value2;
        private T _value3;
        private T _value4;
        private T _value5;
        private T _value6;
        private T _value7;

        public T this[int index]
        {
            get
            {
                switch (index)
                {
                    case 0:
                        return _value0;
                    case 1:
                        return _value1;
                    case 2:
                        return _value2;
                    case 3:
                        return _value3;
                    case 4:
                        return _value4;
                    case 5:
                        return _value5;
                    case 6:
                        return _value6;
                    case 7:
                        return _value7;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
            set
            {
                switch (index)
                {
                    case 0:
                        _value0 = value;
                        break;
                    case 1:
                        _value1 = value;
                        break;
                    case 2:
                        _value2 = value;
                        break;
                    case 3:
                        _value3 = value;
                        break;
                    case 4:
                        _value4 = value;
                        break;
                    case 5:
                        _value5 = value;
                        break;
                    case 6:
                        _value6 = value;
                        break;
                    case 7:
                        _value7 = value;
                        break;
                    default:
                        throw new IndexOutOfRangeException();
                }
            }
        }
    }
}