Unity陀螺仪重置摄像头位置（如oculus recenter摄像头）

Question

我正在为android/ios制作陀螺仪启用的应用程序，您可以使用陀螺仪环视四周。我想让玩家重置他们的摄像头位置（设备的前景），但我无法得到一个系统为此工作。

这里是环视代码：

using UnityEngine; 
using System.Collections; 

public class CameraControl : MonoBehaviour { 
    void Start() { 
     if (SystemInfo.supportsGyroscope) { 
      Input.gyro.enabled = true; 

      //Create parent object and set this object's parent to that 
      GameObject camParent = new GameObject ("CamParent"); 
      camParent.transform.position = transform.position; 
      transform.parent = camParent.transform; 

      // Rotate the parent object by 90 degrees around the x axis 
      camParent.transform.Rotate (Vector3.right, 90); 
     } 
    } 

    void Update() { 
     if (SystemInfo.supportsGyroscope) { 
      Quaternion rotation = new Quaternion (Input.gyro.attitude.x, Input.gyro.attitude.y, -Input.gyro.attitude.z, -Input.gyro.attitude.w); 
      transform.localRotation = rotation; 
     } 
    } 

    void OnGUI() { 
     if (SystemInfo.supportsGyroscope) { 
      GUILayout.Label (transform.localRotation.ToString()); 
      GUILayout.Label (transform.parent.rotation.ToString()); 

      if (GUILayout.Button ("Recenter View")) { 
       //RECENTER THE CAMERA VIEW 
      } 
     } 
    } 
} 

Answer 1

您需要添加一个原点旋转 - 由四元数是要重置旋转的反向旋转的旋转。

在你的情况，这将是：

using UnityEngine; 
using System.Collections; 

public class CameraControl : MonoBehaviour { 
    void Start() { 
     if (SystemInfo.supportsGyroscope) { 
      Input.gyro.enabled = true; 

      //Create parent object and set this object's parent to that 
      GameObject camParent = new GameObject ("CamParent"); 
      camParent.transform.position = transform.position; 
      transform.parent = camParent.transform; 

      // Rotate the parent object by 90 degrees around the x axis 
      camParent.transform.Rotate (Vector3.right, 90); 
     } 
    } 

    Quaternion origin = Quaternion.identity; 

    void Update() { 
     if (SystemInfo.supportsGyroscope) { 
      Quaternion rotation = new Quaternion (Input.gyro.attitude.x, Input.gyro.attitude.y, -Input.gyro.attitude.z, -Input.gyro.attitude.w); 
      transform.localRotation = rotation * origin; 
     } 
    } 

    void OnGUI() { 
     if (SystemInfo.supportsGyroscope) { 
      GUILayout.Label (transform.localRotation.ToString()); 
      GUILayout.Label (transform.parent.rotation.ToString()); 

      if (GUILayout.Button ("Recenter View")) { 
       //RECENTER THE CAMERA VIEW 
       origin = Quaternion.Inverse(transform.localRotation); 
      } 
     } 
    } 
}