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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | #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 Statementsusing System;#endregionnamespace Microsoft.Xna.Framework.Input{ public struct GamePadThumbSticks { #region Public Properties public Vector2 Left { get { return left; } } public Vector2 Right { get { return right; } } #endregion #region Private Variables private Vector2 left; private Vector2 right; #endregion #region Public Constructor public GamePadThumbSticks(Vector2 leftPosition, Vector2 rightPosition) { left = leftPosition; right = rightPosition; ApplySquareClamp(); } #endregion #region Internal Constructor internal GamePadThumbSticks( Vector2 leftPosition, Vector2 rightPosition, GamePadDeadZone deadZoneMode ) { /* XNA applies dead zones before rounding/clamping values. * The public constructor does not allow this because the * dead zone must be known first. */ left = leftPosition; right = rightPosition; ApplyDeadZone(deadZoneMode); if (deadZoneMode == GamePadDeadZone.Circular) { ApplyCircularClamp(); } else { ApplySquareClamp(); } } #endregion #region Private Methods private void ApplyDeadZone(GamePadDeadZone dz) { // Based on the XInput constants const float leftThumbDeadZone = 0.24f; const float rightThumbDeadZone = 0.265f; switch (dz) { case GamePadDeadZone.None: break; case GamePadDeadZone.IndependentAxes: left.X = ExcludeAxisDeadZone(left.X, leftThumbDeadZone); left.Y = ExcludeAxisDeadZone(left.Y, leftThumbDeadZone); right.X = ExcludeAxisDeadZone(right.X, rightThumbDeadZone); right.Y = ExcludeAxisDeadZone(right.Y, rightThumbDeadZone); break; case GamePadDeadZone.Circular: left = ExcludeCircularDeadZone(left, leftThumbDeadZone); right = ExcludeCircularDeadZone(right, rightThumbDeadZone); break; } } private void ApplySquareClamp() { left.X = MathHelper.Clamp(left.X, -1.0f, 1.0f); left.Y = MathHelper.Clamp(left.Y, -1.0f, 1.0f); right.X = MathHelper.Clamp(right.X, -1.0f, 1.0f); right.Y = MathHelper.Clamp(right.Y, -1.0f, 1.0f); } private void ApplyCircularClamp() { if (left.LengthSquared() > 1.0f) { left.Normalize(); } if (right.LengthSquared() > 1.0f) { right.Normalize(); } } #endregion #region Private Static Methods private static float ExcludeAxisDeadZone(float value, float deadZone) { if (value < -deadZone) { value += deadZone; } else if (value > deadZone) { value -= deadZone; } else { return 0.0f; } return value / (1.0f - deadZone); } private static Vector2 ExcludeCircularDeadZone(Vector2 value, float deadZone) { float originalLength = value.Length(); if (originalLength <= deadZone) { return Vector2.Zero; } float newLength = (originalLength - deadZone) / (1.0f - deadZone); return value * (newLength / originalLength); } #endregion #region Public Static Operators and Override Methods /// <summary> /// Determines whether two specified instances of <see cref="GamePadThumbSticks"/> /// are equal. /// </summary> /// <param name="left">The first object to compare.</param> /// <param name="right">The second object to compare.</param> /// <returns> /// True if <paramref name="left"/> and <paramref name="right"/> are equal; /// otherwise, false. /// </returns> public static bool operator ==(GamePadThumbSticks left, GamePadThumbSticks right) { return (left.left == right.left) && (left.right == right.right); } /// <summary> /// Determines whether two specified instances of <see cref="GamePadThumbSticks"/> /// are not equal. /// </summary> /// <param name="left">The first object to compare.</param> /// <param name="right">The second object to compare.</param> /// <returns> /// True if <paramref name="left"/> and <paramref name="right"/> are not equal; /// otherwise, false. /// </returns> public static bool operator !=(GamePadThumbSticks left, GamePadThumbSticks right) { return !(left == right); } /// <summary> /// Returns a value indicating whether this instance is equal to a specified object. /// </summary> /// <param name="obj">An object to compare to this instance.</param> /// <returns> /// True if <paramref name="obj"/> is a <see cref="GamePadThumbSticks"/> and has the /// same value as this instance; otherwise, false. /// </returns> public override bool Equals(object obj) { return (obj is GamePadThumbSticks) && (this == (GamePadThumbSticks) obj); } public override int GetHashCode() { return this.Left.GetHashCode() + 37 * this.Right.GetHashCode(); } #endregion }} |
