#region License
#endregion
#region Using Statements
using System;
#endregion
namespace Microsoft.Xna.Framework.Graphics.PackedVector
{
public struct NormalizedByte4 : IPackedVector<uint>, IEquatable<NormalizedByte4>
{
#region Public Properties
[CLSCompliant(false)]
public uint PackedValue
{
get
{
return packedValue;
}
set
{
packedValue = value;
}
}
#endregion
#region Private Variables
private uint packedValue;
#endregion
#region Public Constructors
public NormalizedByte4(Vector4 vector)
{
packedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
}
public NormalizedByte4(float x, float y, float z, float w)
{
packedValue = Pack(x, y, z, w);
}
#endregion
#region Public Methods
public Vector4 ToVector4()
{
return new Vector4(
((sbyte) (packedValue & 0xFF)) / 127.0f,
((sbyte) ((packedValue >> 8) & 0xFF)) / 127.0f,
((sbyte) ((packedValue >> 16) & 0xFF)) / 127.0f,
((sbyte) ((packedValue >> 24) & 0xFF)) / 127.0f
);
}
#endregion
#region IPackedVector Methods
void IPackedVector.PackFromVector4(Vector4 vector)
{
packedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
}
#endregion
#region Public Static Operators and Override Methods
public static bool operator !=(NormalizedByte4 a, NormalizedByte4 b)
{
return a.packedValue != b.packedValue;
}
public static bool operator ==(NormalizedByte4 a, NormalizedByte4 b)
{
return a.packedValue == b.packedValue;
}
public override bool Equals(object obj)
{
return (obj is NormalizedByte4) && Equals((NormalizedByte4) obj);
}
public bool Equals(NormalizedByte4 other)
{
return packedValue == other.packedValue;
}
public override int GetHashCode()
{
return packedValue.GetHashCode();
}
public override string ToString()
{
return packedValue.ToString("X");
}
#endregion
#region Private Static Pack Method
private static uint Pack(float x, float y, float z, float w)
{
return (
((((uint) (MathHelper.Clamp(x, -1.0f, 1.0f) * 127.0f)) << 0) & 0x000000FF) |
((((uint) (MathHelper.Clamp(y, -1.0f, 1.0f) * 127.0f)) << 8) & 0x0000FF00) |
((((uint) (MathHelper.Clamp(z, -1.0f, 1.0f) * 127.0f)) << 16) & 0x00FF0000) |
((((uint) (MathHelper.Clamp(w, -1.0f, 1.0f) * 127.0f)) << 24) & 0xFF000000)
);
}
#endregion
}
}
