#region License /* MoonWorks - Game Development Framework * Copyright 2021 Evan Hemsley */ /* Derived from code by Ethan Lee (Copyright 2009-2021). * Released under the Microsoft Public License. * See fna.LICENSE for details. * Derived from code by the Mono.Xna Team (Copyright 2006). * Released under the MIT License. See monoxna.LICENSE for details. */ #endregion #region Using Statements using System; using MoonWorks.Math; using MoonWorks.Math.Float; #endregion namespace MoonWorks.Graphics.PackedVector { public struct NormalizedShort4 : IPackedVector, IEquatable { #region Public Properties 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 & 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 x, float y, float z, float w) { const float max = 0x7FFF; const float min = -max; ulong word4 = ( (ulong) MathHelper.Clamp( (float) System.Math.Round(x * max), min, max ) & 0xFFFF ); ulong word3 = ( (ulong) MathHelper.Clamp( (float) System.Math.Round(y * max), min, max ) & 0xFFFF ) << 0x10; ulong word2 = ( (ulong) MathHelper.Clamp( (float) System.Math.Round(z * max), min, max ) & 0xFFFF ) << 0x20; ulong word1 = ( (ulong) MathHelper.Clamp( (float) System.Math.Round(w * max), min, max ) & 0xFFFF ) << 0x30; return (word4 | word3 | word2 | word1); } #endregion } }