unity3d：htcvive vrtk获取手柄的速度

方案1：VRTK原生api方式

代码语言：javascript复制

    void CtrlReferInit1()
    {
        m_leftCtrlRefer = VRTK_ControllerReference.GetControllerReference(m_leftController);

        Debug.Log("Left: "   VRTK_SDK_Bridge.GetControllerIndex(VRTK_DeviceFinder.GetControllerRightHand()));


        m_rightCtrlRefer = VRTK_ControllerReference.GetControllerReference(m_rightController);

        Debug.Log("Right:"   VRTK_SDK_Bridge.GetControllerIndex(VRTK_DeviceFinder.GetControllerRightHand()));
    }

代码语言：javascript复制

public float GetControllerVelocity(SDK_BaseController.ControllerHand handType )
    {
        float speed = 0;
        switch (handType)
        {
            case SDK_BaseController.ControllerHand.Left:
                speed = VRTK_DeviceFinder.GetControllerVelocity(m_leftCtrlRefer).magnitude;
                break;
            case SDK_BaseController.ControllerHand.Right:
                speed = VRTK_DeviceFinder.GetControllerVelocity(m_rightCtrlRefer).magnitude;
                break;
            default:
                break;
        }
        return speed;
    }

但是这样得到速度很不准确，有时候静止也会有速度产生。并且初始化条件苛刻，要开始运行时，手柄就处于激活状态。

方案2：v= s/t

代码语言：javascript复制

        protected virtual void Update()
        {
            float dis = Vector3.Distance(transform.position, m_lastPos);
            float speed = dis / Time.deltaTime;
            m_lastPos = transform.position;
         }

把这方法挂在手柄GameObject上可的速度

sdk break transform unity3d void

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