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annotate Orchestland/Assets/OVR/Scripts/OVRTracker.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
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3 Copyright : Copyright 2014 Oculus VR, LLC. All Rights reserved.
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4
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5 Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License");
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6 you may not use the Oculus VR Rift SDK except in compliance with the License,
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7 which is provided at the time of installation or download, or which
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8 otherwise accompanies this software in either electronic or hard copy form.
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9
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10 You may obtain a copy of the License at
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11
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12 http://www.oculusvr.com/licenses/LICENSE-3.2
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13
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14 Unless required by applicable law or agreed to in writing, the Oculus VR SDK
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15 distributed under the License is distributed on an "AS IS" BASIS,
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16 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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17 See the License for the specific language governing permissions and
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18 limitations under the License.
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19
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20 ************************************************************************************/
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21
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22 using System;
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23 using System.Runtime.InteropServices;
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24 using UnityEngine;
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25 using Ovr;
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26
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27 /// <summary>
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28 /// An infrared camera that tracks the position of a head-mounted display.
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29 /// </summary>
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30 public class OVRTracker
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31 {
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32 /// <summary>
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33 /// The (symmetric) visible area in front of the tracker.
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34 /// </summary>
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35 public struct Frustum
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36 {
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37 /// <summary>
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38 /// The tracker cannot track the HMD unless it is at least this far away.
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39 /// </summary>
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40 public float nearZ;
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41 /// <summary>
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42 /// The tracker cannot track the HMD unless it is at least this close.
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43 /// </summary>
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44 public float farZ;
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45 /// <summary>
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46 /// The tracker's horizontal and vertical fields of view in degrees.
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47 /// </summary>
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48 public Vector2 fov;
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49 }
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50
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51 /// <summary>
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52 /// If true, a tracker is attached to the system.
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53 /// </summary>
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54 public bool isPresent
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55 {
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56 get {
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57 #if !UNITY_ANDROID || UNITY_EDITOR
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58 return (OVRManager.capiHmd.GetTrackingState().StatusFlags & (uint)StatusBits.PositionConnected) != 0;
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59 #else
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60 return false;
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61 #endif
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62 }
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63 }
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64
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65 /// <summary>
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66 /// If true, the tracker can see and track the HMD. Otherwise the HMD may be occluded or the system may be malfunctioning.
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67 /// </summary>
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68 public bool isPositionTracked
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69 {
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70 get {
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71 #if !UNITY_ANDROID || UNITY_EDITOR
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72 return (OVRManager.capiHmd.GetTrackingState().StatusFlags & (uint)StatusBits.PositionTracked) != 0;
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73 #else
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74 return false;
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75 #endif
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76 }
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77 }
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78
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79 /// <summary>
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80 /// If this is true and a tracker is available, the system will use position tracking when isPositionTracked is also true.
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81 /// </summary>
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82 public bool isEnabled
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83 {
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84 get {
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85 #if !UNITY_ANDROID || UNITY_EDITOR
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86 uint trackingCaps = OVRManager.capiHmd.GetDesc().TrackingCaps;
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87 return (trackingCaps & (uint)TrackingCaps.Position) != 0;
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88 #else
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89 return false;
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90 #endif
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91 }
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92
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93 set {
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94 #if !UNITY_ANDROID || UNITY_EDITOR
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95 uint trackingCaps = (uint)TrackingCaps.Orientation | (uint)TrackingCaps.MagYawCorrection;
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96
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97 if (value)
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98 trackingCaps |= (uint)TrackingCaps.Position;
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99
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100 OVRManager.capiHmd.ConfigureTracking(trackingCaps, 0);
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101 #endif
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102 }
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103 }
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104
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105 /// <summary>
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106 /// Gets the tracker's viewing frustum.
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107 /// </summary>
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108 public Frustum frustum
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109 {
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110 get {
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111 #if !UNITY_ANDROID || UNITY_EDITOR
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112 HmdDesc desc = OVRManager.capiHmd.GetDesc();
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113
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114 return new Frustum
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115 {
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116 nearZ = desc.CameraFrustumNearZInMeters,
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117 farZ = desc.CameraFrustumFarZInMeters,
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118 fov = Mathf.Rad2Deg * new Vector2(desc.CameraFrustumHFovInRadians, desc.CameraFrustumVFovInRadians)
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119 };
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120 #else
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121 return new Frustum
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122 {
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123 nearZ = 0.1f,
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124 farZ = 1000.0f,
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125 fov = new Vector2(90.0f, 90.0f)
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126 };
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127 #endif
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128 }
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129 }
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130
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131 /// <summary>
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132 /// Gets the tracker's pose, relative to the head's pose at the time of the last pose recentering.
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133 /// </summary>
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134 public OVRPose GetPose(double predictionTime = 0d)
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135 {
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136 #if !UNITY_ANDROID || UNITY_EDITOR
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137 double abs_time_plus_pred = Hmd.GetTimeInSeconds() + predictionTime;
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138
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139 return OVRManager.capiHmd.GetTrackingState(abs_time_plus_pred).CameraPose.ToPose();
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140 #else
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141 return new OVRPose
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142 {
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143 position = Vector3.zero,
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144 orientation = Quaternion.identity
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145 };
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146 #endif
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147 }
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148 }