#region License
#endregion
#region Using Statements
using System;
#endregion
namespace Microsoft.Xna.Framework.Graphics.PackedVector
{
public struct NormalizedShort4 : IPackedVector<ulong>, IEquatable<NormalizedShort4>
{
#region Public Properties
[CLSCompliant(false)]
public ulong PackedValue
{
get
{
return packedValue;
}
set
{
packedValue = value;
}
}
#endregion
#region Private Variables
private ulong packedValue;
#endregion
#region Public Constructors
public NormalizedShort4(Vector4 vector)
{
packedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
}
public NormalizedShort4(float x, float y, float z, float w)
{
packedValue = Pack(x, y, z, w);
}
#endregion
#region Public Methods
public Vector4 ToVector4()
{
const float maxVal = 0x7FFF;
return new Vector4(
((short) ((packedValue >> 0x00) & 0xFFFF)) / maxVal,
((short) ((packedValue >> 0x10) & 0xFFFF)) / maxVal,
((short) ((packedValue >> 0x20) & 0xFFFF)) / maxVal,
((short) ((packedValue >> 0x30) & 0xFFFF)) / maxVal
);
}
#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 !=(NormalizedShort4 a, NormalizedShort4 b)
{
return !a.Equals(b);
}
public static bool operator ==(NormalizedShort4 a, NormalizedShort4 b)
{
return a.Equals(b);
}
public override bool Equals(object obj)
{
return (obj is NormalizedShort4) && Equals((NormalizedShort4) obj);
}
public bool Equals(NormalizedShort4 other)
{
return packedValue.Equals(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 ulong Pack(float vectorX, float vectorY, float vectorZ, float vectorW)
{
const float maxPos = 0x7FFF;
const float minNeg = -maxPos;
return (
(((ulong) MathHelper.Clamp((float) Math.Round(vectorX * maxPos), minNeg, maxPos) & 0xFFFF) << 0x00) |
(((ulong) MathHelper.Clamp((float) Math.Round(vectorY * maxPos), minNeg, maxPos) & 0xFFFF) << 0x10) |
(((ulong) MathHelper.Clamp((float) Math.Round(vectorZ * maxPos), minNeg, maxPos) & 0xFFFF) << 0x20) |
(((ulong) MathHelper.Clamp((float) Math.Round(vectorW * maxPos), minNeg, maxPos) & 0xFFFF) << 0x30)
);
}
#endregion
}
}
