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annotate Orchestland/Assets/LeapMotion/Widgets/Scripts/Dial/DialModeBase.cs @ 1:f7675884f2a1

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Add Orchestland project
author Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2015 23:09:20 +0900
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children
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Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
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1 using UnityEngine;
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2 using System.Collections;
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3 //using VRWidgets;
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4
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5 namespace LMWidgets
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6 {
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7 [RequireComponent(typeof(Rigidbody))]
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8 public class DialModeBase : MonoBehaviour
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9 {
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10 [SerializeField]
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11 private float
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12 minimumAngle = 0f;
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13 [SerializeField]
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14 private float
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15 maximumAngle = 360f;
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16 public int steps = 0; // Do not snap to steps when <= 0
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17
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18 private bool interacting_ = false; // If a GameObject is destroyed OnExit will not be called
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19 private GameObject target_ = null; // Intersecting object that controls position
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20 private Vector3 pivot_ = Vector3.zero; // Local position of first intersection
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21
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22 private float prev_angle_ = 0f;
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23 private float curr_angle_ = 0f;
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24 public DialGraphics dialGraphics;
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25
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26 // Standardize Minimum & Maximum
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27 void Awake ()
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28 {
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29 //GetComponent<Collider>().isTrigger = true;
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30 GetComponent<Rigidbody>().isKinematic = true;
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31 if (minimumAngle == maximumAngle) {
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32 // Use default ranges
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33 minimumAngle = 0f;
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34 maximumAngle = 360f;
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35 return;
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36 }
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37 if (minimumAngle > maximumAngle) {
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38 // Ensure correct orientation
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39 float swap = minimumAngle;
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40 minimumAngle = maximumAngle;
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41 maximumAngle = swap;
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42 }
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43 float over = maximumAngle - minimumAngle - 360f;
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44 if (over > 0f) {
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45 // restrict range
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46 maximumAngle -= over / 2f;
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47 minimumAngle += over / 2f;
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48 }
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49 }
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50
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51 void OnEnable ()
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52 {
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53 if (steps > 0)
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54 SnapToStep ();
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55 }
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56
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57 void OnDisable ()
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58 {
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59 // Avoid lingering references to exited objects
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60 //if (interacting_) Debug.Log ("NEVER STOPPED INTERACTING");
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61 //if (target_ != null) Debug.Log ("TARGET WAS NOT RELEASED");
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62 EndInteraction ();
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63 }
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64
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65 // Maps angle to the range (-180, 180]
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66 protected float MinAngleToZero (float angle)
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67 {
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68 float minAngle = angle % 360f;
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69 if (minAngle > 180f)
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70 minAngle = minAngle - 360f;
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71 if (minAngle <= -180f)
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72 minAngle = 360f + minAngle;
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73 return minAngle;
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74 }
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75
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76 // Restrictions to min & max evenly divide the out-of-range angles
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77 protected float RestrictAngle (float setAngle)
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78 {
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79 float acceptDivider = (maximumAngle + minimumAngle) / 2f; // midpoint of acceptance region
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80 float resAngle = MinAngleToZero (setAngle - acceptDivider);
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81 if (resAngle > maximumAngle - acceptDivider)
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82 resAngle = maximumAngle - acceptDivider;
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83 if (resAngle < minimumAngle - acceptDivider)
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84 resAngle = minimumAngle - acceptDivider;
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85 resAngle += acceptDivider;
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86 return resAngle;
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87 }
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88
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89 protected int RestrictStep (float setAngle)
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90 {
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91 float setFraction = (RestrictAngle (setAngle) - minimumAngle) / (maximumAngle - minimumAngle);
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92 int resStep = (int)((steps * setFraction) + 0.5f);
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93 if (resStep == steps)
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94 // When setAngle == maximumAngle int rounding will not yield a reduction
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95 resStep = steps - 1;
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96 return resStep;
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97 }
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98
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99 // CurrentAngle ranges from minimumAngle to maximumAngle
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100 public float CurrentAngle {
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101 get {
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102 return RestrictAngle (transform.localRotation.eulerAngles.y);
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103 }
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104 set {
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105 // Debug.Log ("DialModeBase.CurrentAngle is being set to: " + value);
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106 Vector3 eulerAngles = transform.localRotation.eulerAngles;
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107 eulerAngles.x = 0f;
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108 eulerAngles.y = RestrictAngle (value);
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109 eulerAngles.z = 0f;
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110 transform.localRotation = Quaternion.Euler (eulerAngles);
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111 }
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112 }
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113
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114 // CurrentStep ranges from 0 to steps-1
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115 public int CurrentStep {
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116 get {
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117 return RestrictStep (transform.localRotation.eulerAngles.y);
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118 }
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119 set {
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120 // Debug.Log ("DialModeBase.CurrentStep is being set to: " + value);
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121 if (steps <= 0)
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122 return;
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123 CurrentAngle = (value * (maximumAngle - minimumAngle) / steps) + minimumAngle;
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124 }
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125 }
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126
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127 private bool IsHand (Collider other)
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128 {
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129 return other.transform.parent && other.transform.parent.parent && other.transform.parent.parent.GetComponent<HandModel> ();
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130 }
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131
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132 void OnTriggerEnter (Collider other)
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133 {
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134 if (target_ == null && IsHand (other)) {
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135 target_ = other.gameObject;
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Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
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136 pivot_ = transform.InverseTransformPoint (target_.transform.position) - transform.localPosition;
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137 if (GetComponent<Rigidbody>().isKinematic == false)
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138 transform.GetComponent<Rigidbody>().angularVelocity = Vector3.zero;
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139 interacting_ = true;
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140 if (dialGraphics)
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141 dialGraphics.HilightDial ();
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142 }
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143 }
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144
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145 void OnTriggerExit (Collider other)
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146 {
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147 if (other.gameObject == target_) {
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148 EndInteraction ();
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149 }
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150 }
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151
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152 void EndInteraction ()
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153 {
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154 target_ = null;
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155 if (steps > 0) {
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Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
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156 SnapToStep ();
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157 } else {
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Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
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158 float FPS_INVERSE = 1f / Time.deltaTime;
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159 float angular_velocity = (curr_angle_ - prev_angle_) * FPS_INVERSE;
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160 transform.GetComponent<Rigidbody>().AddRelativeTorque (new Vector3 (0f, 0f, angular_velocity));
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161 }
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162 interacting_ = false;
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163 // NOTE: External update should following internal state update,
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164 // so that exceptions in external update do not yield inconsistent state
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165 if (dialGraphics)
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166 dialGraphics.UpdateDial ();
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167 }
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168
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169 protected virtual void ApplyRotations ()
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170 {
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171 Vector3 curr_direction = transform.InverseTransformPoint (target_.transform.position) - transform.localPosition;
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172 transform.localRotation = Quaternion.FromToRotation (pivot_, curr_direction) * transform.localRotation;
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173 }
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174
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175 protected virtual void ApplyConstraints ()
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176 {
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177 Vector3 rotation = transform.localRotation.eulerAngles;
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178 rotation.x = 0f;
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179 // Allow dial manipulation to exceed range - it will snap back when released
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180 prev_angle_ = curr_angle_;
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181 curr_angle_ = rotation.y;
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182 rotation.z = 0f;
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183 transform.localRotation = Quaternion.Euler (rotation);
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184 }
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185
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186 protected virtual void SnapToStep ()
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187 {
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188 CurrentStep = CurrentStep;
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189 ApplyConstraints ();
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190 }
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191
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192 void FixedUpdate ()
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parents:
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193 {
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diff changeset
194 if (target_ == null && interacting_) {
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parents:
diff changeset
195 // Hand destroyed while interacting
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196 //Debug.Log ("HAND DESTROYED WHILE INTERACTING");
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197 EndInteraction ();
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198 }
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199 if (target_ != null) {
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diff changeset
200 ApplyRotations ();
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parents:
diff changeset
201 }
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parents:
diff changeset
202 ApplyConstraints ();
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parents:
diff changeset
203 }
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parents:
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204 }
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parents:
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205 }
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parents:
diff changeset
206