GamepadPose

这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

Gamepad API的接口GamepadPose 表示WebVR的控制者在某个给定时间点的姿势， (包括方向、位置、速率、加速度信息)

这个接口通过 Gamepad.pose 属性使用。

属性

GamepadPose.hasOrientation 只读: Returns a boolean indicating whether the gamepad is capable of returning orientation information (true) or not (false).
GamepadPose.hasPosition 只读: Returns a boolean indicating whether the gamepad is capable of returning position information (true) or not (false).
GamepadPose.position 只读: Returns the position of the Gamepad as a 3D vector.
GamepadPose.linearVelocity 只读: Returns the linear velocity of the Gamepad, in meters per second.
GamepadPose.linearAcceleration 只读: Returns the linear acceleration of the Gamepad, in meters per second per second.
GamepadPose.orientation 只读: Returns the orientation of the Gamepad, as a quarternion value.
GamepadPose.angularVelocity 只读: Returns the angular velocity of the Gamepad, in radians per second.
GamepadPose.angularAcceleration 只读: Returns the angular acceleration of the Gamepad, in meters per second per second.