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annotate Orchestland/Assets/LeapMotion/Widgets/Scripts/Button/ButtonBase.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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1
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1 using UnityEngine;
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2 using System;
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3 using System.Collections;
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4
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5 namespace LMWidgets
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6 {
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7 public abstract class ButtonBase : LeapPhysicsSpring, BinaryInteractionHandler<bool>
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8 {
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9 // Binary Interaction Handler - Fires when interaction with the widget starts.
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10 public event EventHandler<LMWidgets.EventArg<bool>> StartHandler;
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11 // Binary Interaction Handler - Fires when interaction with the widget ends.
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12 public event EventHandler<LMWidgets.EventArg<bool>> EndHandler;
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13
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14 public float triggerDistance = 0.025f;
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15 public float cushionThickness = 0.005f;
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16
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17 protected float scaled_spring_;
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18 protected float scaled_trigger_distance_;
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19 protected float scaled_cushion_thickness_;
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20
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21 protected float min_distance_;
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22 protected float max_distance_;
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23
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24 protected float m_localTriggerDistance;
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25 protected float m_localCushionThickness;
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26 protected bool m_isPressed = false;
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27
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28 protected virtual void buttonReleased ()
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29 {
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30 FireButtonEnd ();
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31 }
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32
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33 protected virtual void buttonPressed ()
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34 {
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35 FireButtonStart ();
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36 }
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37
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38 protected void FireButtonStart (bool value = true)
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39 {
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40 EventHandler<LMWidgets.EventArg<bool>> handler = StartHandler;
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41 if (handler != null) {
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42 handler (this, new LMWidgets.EventArg<bool> (value));
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43 }
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44 }
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45
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46 protected void FireButtonEnd (bool value = false)
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47 {
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48 EventHandler<LMWidgets.EventArg<bool>> handler = EndHandler;
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49 if (handler != null) {
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50 handler (this, new LMWidgets.EventArg<bool> (value));
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51 }
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52 }
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53
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54
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55 /// <summary>
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56 /// Returns the fraction of position of the button between rest and trigger. 0.0 = At Rest. 1.0 = At Triggered Distance.
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57 /// </summary>
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58 /// <returns>fraction</returns>
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59 public float GetFraction()
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60 {
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61 if (triggerDistance == 0.0f)
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62 return 0.0f;
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63 else
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64 {
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65 float fraction = transform.localPosition.z / m_localTriggerDistance;
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66 return Mathf.Clamp(fraction, 0.0f, 1.0f);
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67 }
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68 }
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69
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70 /// <summary>
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71 /// Constrain the button to the z-axis
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72 /// </summary>
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73 protected override void ApplyConstraints()
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74 {
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75 Vector3 localPosition = transform.localPosition;
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76 localPosition.x = 0.0f;
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77 localPosition.y = 0.0f;
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78 localPosition.z = Mathf.Max(localPosition.z, 0.0f);
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79 transform.localPosition = localPosition;
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80 }
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81
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82 /// <summary>
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83 /// Check if the button is being pressed or not
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84 /// </summary>
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85 private void CheckTrigger()
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86 {
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87 float scale = transform.lossyScale.z;
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88 m_localTriggerDistance = triggerDistance / scale;
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89 m_localCushionThickness = Mathf.Clamp(cushionThickness / scale, 0.0f, m_localTriggerDistance - 0.001f);
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90 if (m_isPressed == false)
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91 {
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92 if (transform.localPosition.z > m_localTriggerDistance)
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93 {
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94 m_isPressed = true;
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95 buttonPressed();
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96 }
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97 }
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98 else if (m_isPressed == true)
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99 {
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100 if (transform.localPosition.z < (m_localTriggerDistance - m_localCushionThickness))
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101 {
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102 m_isPressed = false;
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103 buttonReleased();
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104 }
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105 }
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106 }
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107
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108 protected virtual void Start()
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109 {
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110 cushionThickness = Mathf.Clamp(cushionThickness, 0.0f, triggerDistance - 0.001f);
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111 }
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112
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113 protected virtual void Update()
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114 {
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115 CheckTrigger();
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116 }
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117 }
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118 }