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comparison 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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0:347d21cdfc22 1:f7675884f2a1
1 using UnityEngine;
2 using System;
3 using System.Collections;
4
5 namespace LMWidgets
6 {
7 public abstract class ButtonBase : LeapPhysicsSpring, BinaryInteractionHandler<bool>
8 {
9 // Binary Interaction Handler - Fires when interaction with the widget starts.
10 public event EventHandler<LMWidgets.EventArg<bool>> StartHandler;
11 // Binary Interaction Handler - Fires when interaction with the widget ends.
12 public event EventHandler<LMWidgets.EventArg<bool>> EndHandler;
13
14 public float triggerDistance = 0.025f;
15 public float cushionThickness = 0.005f;
16
17 protected float scaled_spring_;
18 protected float scaled_trigger_distance_;
19 protected float scaled_cushion_thickness_;
20
21 protected float min_distance_;
22 protected float max_distance_;
23
24 protected float m_localTriggerDistance;
25 protected float m_localCushionThickness;
26 protected bool m_isPressed = false;
27
28 protected virtual void buttonReleased ()
29 {
30 FireButtonEnd ();
31 }
32
33 protected virtual void buttonPressed ()
34 {
35 FireButtonStart ();
36 }
37
38 protected void FireButtonStart (bool value = true)
39 {
40 EventHandler<LMWidgets.EventArg<bool>> handler = StartHandler;
41 if (handler != null) {
42 handler (this, new LMWidgets.EventArg<bool> (value));
43 }
44 }
45
46 protected void FireButtonEnd (bool value = false)
47 {
48 EventHandler<LMWidgets.EventArg<bool>> handler = EndHandler;
49 if (handler != null) {
50 handler (this, new LMWidgets.EventArg<bool> (value));
51 }
52 }
53
54
55 /// <summary>
56 /// Returns the fraction of position of the button between rest and trigger. 0.0 = At Rest. 1.0 = At Triggered Distance.
57 /// </summary>
58 /// <returns>fraction</returns>
59 public float GetFraction()
60 {
61 if (triggerDistance == 0.0f)
62 return 0.0f;
63 else
64 {
65 float fraction = transform.localPosition.z / m_localTriggerDistance;
66 return Mathf.Clamp(fraction, 0.0f, 1.0f);
67 }
68 }
69
70 /// <summary>
71 /// Constrain the button to the z-axis
72 /// </summary>
73 protected override void ApplyConstraints()
74 {
75 Vector3 localPosition = transform.localPosition;
76 localPosition.x = 0.0f;
77 localPosition.y = 0.0f;
78 localPosition.z = Mathf.Max(localPosition.z, 0.0f);
79 transform.localPosition = localPosition;
80 }
81
82 /// <summary>
83 /// Check if the button is being pressed or not
84 /// </summary>
85 private void CheckTrigger()
86 {
87 float scale = transform.lossyScale.z;
88 m_localTriggerDistance = triggerDistance / scale;
89 m_localCushionThickness = Mathf.Clamp(cushionThickness / scale, 0.0f, m_localTriggerDistance - 0.001f);
90 if (m_isPressed == false)
91 {
92 if (transform.localPosition.z > m_localTriggerDistance)
93 {
94 m_isPressed = true;
95 buttonPressed();
96 }
97 }
98 else if (m_isPressed == true)
99 {
100 if (transform.localPosition.z < (m_localTriggerDistance - m_localCushionThickness))
101 {
102 m_isPressed = false;
103 buttonReleased();
104 }
105 }
106 }
107
108 protected virtual void Start()
109 {
110 cushionThickness = Mathf.Clamp(cushionThickness, 0.0f, triggerDistance - 0.001f);
111 }
112
113 protected virtual void Update()
114 {
115 CheckTrigger();
116 }
117 }
118 }