unity&HTC VIVE的VR编程学习

参考链接：https://www.vive.com/cn/forum/2748?1

• 定位器（切记：在使用设备过程中不要移动，应该在使用之前定位好，否则恢复很麻烦）
  
• 头戴设备（无需充电，有线连接）
  
• 操控手柄（即控制器，需要充电，无线连接（带充电器，指示灯橙光正在充电，白光已充满。如果使用中不能看到手柄，有可能是没有电导致））
  

项目学习参考链接：https://www.raywenderlich.com/9189-htc-vive-tutorial-for-unity

• 安装Steam，注册账号，在Steam中安装SteamVR
    Steam是一个成熟的VR游戏售卖平台，SteamVR是HTC VIVE在电脑上运行的必备软件。此外可以试试VIVEPORT。
  
• 安装unity，在Asset Store下载导入SteamVR Plugin插件（在Assets文件夹中多了一个SteamVR文件夹）,Hierarchy窗口出现如下两个实体：
  [SteamVR] has a Steam VR_Render component attached that handles the rendering of all VR cameras.
  [CameraRig] is more interesting because it controls the Vive’s headset and controllers.
  

• 定义动作（看第一个文档）
  

• Boolean : Actions that are either true or false, on or off. Example use: grab.
  
• Single / Vector1 : Actions that have a value between 0 and 1. Example use: movement speed.
  
• Vector2 : Actions that have an X and Y value between 0 and 1. Example use: direction.
  
• Vector3 : Actions that have an X, Y and Z value between 0 and 1. These actions are very uncommon.
  
• Pose : Actions that represent a position and rotation in 3D space. These actions are used to track VR controllers and the HMD.
  
• Skeleton : Actions that use the SteamVR Skeleton Input system to estimate where the player’s fingers are when holding the VR controller. This provides joint positions and rotations for every finger, regardless of the controller’s tracking fidelity.