#region Using Statements
using System;
using ANX.Framework.NonXNA.Development;
using ANX.Framework.NonXNA;

#endregion

// This file is part of the ANX.Framework created by the
// "ANX.Framework developer group" and released under the Ms-PL license.
// For details see: http://anxframework.codeplex.com/license

namespace ANX.Framework.Graphics
{
    [PercentageComplete(100)]
    [Developer("Glatzemann")]
    [TestState(TestStateAttribute.TestState.Tested)]
    public struct VertexElement
    {
        #region Private
        private int offset;
        private VertexElementFormat elementFormat;
        private VertexElementUsage elementUsage;
        private int usageIndex;
        #endregion

        #region Public
        public int Offset
        {
            get { return this.offset; }
            set { this.offset = value; }
        }

        public VertexElementFormat VertexElementFormat
        {
            get { return this.elementFormat; }
            set { this.elementFormat = value; }
        }

        public VertexElementUsage VertexElementUsage
        {
            get { return this.elementUsage; }
            set { this.elementUsage = value; }
        }

        public int UsageIndex
        {
            get { return this.usageIndex; }
            set { this.usageIndex = value; }
        }
        #endregion

        public VertexElement(int offset, VertexElementFormat elementFormat, VertexElementUsage elementUsage, int usageIndex)
        {
            this.offset = offset;
            this.elementFormat = elementFormat;
            this.elementUsage = elementUsage;
            this.usageIndex = usageIndex;
        }

        public override int GetHashCode()
        {
            return HashHelper.GetGCHandleHashCode(this);
        }

        public override string ToString()
        {
            return String.Format("{{Offset:{0} Format:{1} Usage:{2} UsageIndex:{3}}}", offset, elementFormat, elementUsage,
                usageIndex);
        }

        public override bool Equals(object obj)
        {
            return obj is VertexElement && this == (VertexElement)obj;
        }

        public static bool operator ==(VertexElement lhs, VertexElement rhs)
        {
            return lhs.offset == rhs.offset && lhs.elementFormat == rhs.elementFormat && lhs.elementUsage == rhs.elementUsage &&
                lhs.usageIndex == rhs.usageIndex;
        }

        public static bool operator !=(VertexElement lhs, VertexElement rhs)
        {
            return lhs.offset != rhs.offset || lhs.elementFormat != rhs.elementFormat || lhs.elementUsage != rhs.elementUsage ||
                lhs.usageIndex == rhs.usageIndex;
        }
    }
}