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annotate Orchestland/Assets/LeapMotion/Scripts/Utils/DisconnectionNotice.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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2 * Copyright (C) Leap Motion, Inc. 2011-2014. *
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3 * Leap Motion proprietary. Licensed under Apache 2.0 *
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4 * Available at http://www.apache.org/licenses/LICENSE-2.0.html *
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5 \******************************************************************************/
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6
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7 using UnityEngine;
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8 using System.Collections;
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9 using Leap;
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10
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11 /**
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12 * Tracks the connection state of the Leap Motion hardware. If the device is unplugged
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13 * or otherwise not detected, the script fades in a GUITexture object which should communicate
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14 * the problem to the user.
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15 */
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16 public class DisconnectionNotice : MonoBehaviour {
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17
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18 /** The speed to fade the object alpha from 0 to 1. */
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19 public float fadeInTime = 1.0f;
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20 /** The speed to fade the object alpha from 1 to 0. */
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21 public float fadeOutTime = 1.0f;
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22 /** The easing curve. */
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23 public AnimationCurve fade;
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24 /** A delay before beginning the fade-in effect. */
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25 public int waitFrames = 10;
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26 /** An alternative image to use when the hardware is embedded in a keyboard or laptop. */
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27 public Texture2D embeddedReplacementImage;
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28 /** The fully on texture tint color. */
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29 public Color onColor = Color.white;
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30
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31 private Controller leap_controller_;
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32 private float fadedIn = 0.0f;
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33 private int frames_disconnected_ = 0;
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34
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35 void Start() {
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36 leap_controller_ = new Controller();
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37 SetAlpha(0.0f);
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38 }
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39
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40 void SetAlpha(float alpha) {
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41 GetComponent<GUITexture>().color = Color.Lerp(Color.clear, onColor, alpha);
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42 }
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43
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44 /** The connection state of the controller. */
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45 bool IsConnected() {
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46 return leap_controller_.IsConnected;
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47 }
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48
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49 /** Whether the controller is embedded in a keyboard or laptop.*/
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50 bool IsEmbedded() {
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51 DeviceList devices = leap_controller_.Devices;
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52 if (devices.Count == 0)
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53 return false;
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54 return devices[0].IsEmbedded;
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55 }
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56
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57 void Update() {
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58 if (embeddedReplacementImage != null && IsEmbedded()) {
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59 GetComponent<GUITexture>().texture = embeddedReplacementImage;
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60 }
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61
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62 if (IsConnected())
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63 frames_disconnected_ = 0;
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64 else
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65 frames_disconnected_++;
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66
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67 if (frames_disconnected_ < waitFrames)
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68 fadedIn -= Time.deltaTime / fadeOutTime;
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69 else
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70 fadedIn += Time.deltaTime / fadeInTime;
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71 fadedIn = Mathf.Clamp(fadedIn, 0.0f, 1.0f);
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72
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73 SetAlpha(fade.Evaluate(fadedIn));
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74 }
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75 }