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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | #region License /* FNA - XNA4 Reimplementation for Desktop Platforms * Copyright 2009-2016 Ethan Lee and the MonoGame Team * * Released under the Microsoft Public License. * See LICENSE for details. */ #endregion #region Using Statements using System; #endregion namespace Microsoft.Xna.Framework.Graphics.PackedVector { /// <summary> /// Packed vector type containing four 8-bit unsigned integer values, ranging from 0 to 255. /// </summary> public struct Byte4 : IPackedVector< uint >, IEquatable<Byte4>, IPackedVector { #region Public Properties /// <summary> /// Directly gets or sets the packed representation of the value. /// </summary> /// <value>The packed representation of the value.</value> [CLSCompliant( false )] public uint PackedValue { get { return packedValue; } set { packedValue = value; } } #endregion #region Private Variables private uint packedValue; #endregion #region Public Constructors /// <summary> /// Initializes a new instance of the Byte4 class. /// </summary> /// <param name="vector"> /// A vector containing the initial values for the components of the Byte4 structure. /// </param> public Byte4(Vector4 vector) { packedValue = Pack( ref vector); } /// <summary> /// Initializes a new instance of the Byte4 class. /// </summary> /// <param name="x">Initial value for the x component.</param> /// <param name="y">Initial value for the y component.</param> /// <param name="z">Initial value for the z component.</param> /// <param name="w">Initial value for the w component.</param> public Byte4( float x, float y, float z, float w) { Vector4 vector = new Vector4(x, y, z, w); packedValue = Pack( ref vector); } #endregion #region Public Methods /// <summary> /// Expands the packed representation into a Vector4. /// </summary> /// <returns>The expanded vector.</returns> public Vector4 ToVector4() { return new Vector4( ( float ) (packedValue & 0xFF), ( float ) ((packedValue >> 0x8) & 0xFF), ( float ) ((packedValue >> 0x10) & 0xFF), ( float ) ((packedValue >> 0x18) & 0xFF) ); } #endregion #region IPackedVector Methods /// <summary> /// Sets the packed representation from a Vector4. /// </summary> /// <param name="vector">The vector to create the packed representation from.</param> void IPackedVector.PackFromVector4(Vector4 vector) { packedValue = Pack( ref vector); } #endregion #region Public Static Operators and Override Methods /// <summary> /// Compares the current instance of a class to another instance to determine /// whether they are different. /// </summary> /// <param name="a">The object to the left of the equality operator.</param> /// <param name="b">The object to the right of the equality operator.</param> /// <returns>True if the objects are different; false otherwise.</returns> public static bool operator !=(Byte4 a, Byte4 b) { return a.packedValue != b.packedValue; } /// <summary> /// Compares the current instance of a class to another instance to determine /// whether they are the same. /// </summary> /// <param name="a">The object to the left of the equality operator.</param> /// <param name="b">The object to the right of the equality operator.</param> /// <returns>True if the objects are the same; false otherwise.</returns> public static bool operator ==(Byte4 a, Byte4 b) { return a.packedValue == b.packedValue; } /// <summary> /// Returns a value that indicates whether the current instance is equal to a /// specified object. /// </summary> /// <param name="obj">The object with which to make the comparison.</param> /// <returns> /// True if the current instance is equal to the specified object; false otherwise. /// </returns> public override bool Equals( object obj) { return (obj is Byte4) && Equals((Byte4) obj); } /// <summary> /// Returns a value that indicates whether the current instance is equal to a /// specified object. /// </summary> /// <param name="other">The object with which to make the comparison.</param> /// <returns> /// True if the current instance is equal to the specified object; false otherwise. /// </returns> public bool Equals(Byte4 other) { return this == other; } /// <summary> /// Gets the hash code for the current instance. /// </summary> /// <returns>Hash code for the instance.</returns> public override int GetHashCode() { return packedValue.GetHashCode(); } /// <summary> /// Returns a string representation of the current instance. /// </summary> /// <returns>String that represents the object.</returns> public override string ToString() { return packedValue.ToString( "x8" ); } #endregion #region Private Static Pack Method /// <summary> /// Packs a vector into a uint. /// </summary> /// <param name="vector">The vector containing the values to pack.</param> /// <returns>The ulong containing the packed values.</returns> static uint Pack( ref Vector4 vector) { return ( (( uint ) MathHelper.Clamp(vector.X, 0, 255) & 0xFF) | ((( uint ) MathHelper.Clamp(vector.Y, 0, 255) & 0xFF) << 0x8) | ((( uint ) MathHelper.Clamp(vector.Z, 0, 255) & 0xFF) << 0x10) | ((( uint ) MathHelper.Clamp(vector.W, 0, 255) & 0xFF) << 0x18) ); } #endregion } } |