这篇文章主要介绍了如何使用Unity3D基于陀螺仪实现VR相机功能，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
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步骤如下：
1、打开Unity，创建一个新的C#脚本GyroController.cs,并挂在MainCamera游戏对象上
代码如下：
using UnityEngine;using System.Collections; public class GyroController : MonoBehaviour{ // Fields private readonly Quaternion baseIdentity = Quaternion.Euler(90f, 0f, 0f); private Quaternion baseOrientation = Quaternion.Euler(90f, 0f, 0f); private Quaternion baseOrientationRotationFix = Quaternion.identity; private Quaternion calibration = Quaternion.identity; private Quaternion cameraBase = Quaternion.identity; private bool debug = true; public static bool gyroAvaiable; private bool gyroEnabled = true; private Quaternion gyroInitialRotation; public static bool gyroOff; private Quaternion initialRotation; private readonly Quaternion landscapeLeft = Quaternion.Euler(0f, 0f, -90f); private readonly Quaternion landscapeRight = Quaternion.Euler(0f, 0f, 90f); private const float lowPassFilterFactor = 0.1f; private Quaternion offsetRotation; private Quaternion referanceRotation = Quaternion.identity; private readonly Quaternion upsideDown = Quaternion.Euler(0f, 0f, 180f); // Methods private void AttachGyro() { this.gyroEnabled = true; this.ResetBaseOrientation(); this.UpdateCalibration(true); this.UpdateCameraBaseRotation(true); this.RecalculateReferenceRotation(); } private void Awake() { gyroAvaiable = SystemInfo.supportsGyroscope; } private static Quaternion ConvertRotation(Quaternion q) { return new Quaternion(q.x, q.y, -q.z, -q.w); } private void DetachGyro() { this.gyroEnabled = false; } private Quaternion GetRotFix() { return Quaternion.identity; } private void RecalculateReferenceRotation() { this.referanceRotation = Quaternion.Inverse(this.baseOrientation) * Quaternion.Inverse(this.calibration); } private void ResetBaseOrientation() { this.baseOrientationRotationFix = this.GetRotFix(); this.baseOrientation = this.baseOrientationRotationFix * this.baseIdentity; } protected void Start() { Input.gyro.enabled = true; base.enabled = true; this.AttachGyro(); this.initialRotation = base.transform.localRotation; this.gyroInitialRotation = Input.gyro.attitude; } private void Update() { gyroOff = PlayerPrefs.GetInt("gyro-off") == 1; if (this.gyroEnabled ) { base.transform.localRotation = Quaternion.Slerp(base.transform.localRotation, this.cameraBase * (ConvertRotation(this.referanceRotation * Input.gyro.attitude) * this.GetRotFix()), 0.5f);//0.1f } } private void UpdateCalibration(bool onlyHorizontal) { if (onlyHorizontal) { Vector3 toDirection = (Vector3) (Input.gyro.attitude * -Vector3.forward); toDirection.z = 0f; if (toDirection == Vector3.zero) { this.calibration = Quaternion.identity; } else { this.calibration = Quaternion.FromToRotation((Vector3) (this.baseOrientationRotationFix * Vector3.up), toDirection); } } else { this.calibration = Input.gyro.attitude; } } private void UpdateCameraBaseRotation(bool onlyHorizontal) { if (onlyHorizontal) { Vector3 forward = base.transform.forward; forward.y = 0f; if (forward == Vector3.zero) { this.cameraBase = Quaternion.identity; } else { this.cameraBase = Quaternion.FromToRotation(Vector3.forward, forward); } } else { this.cameraBase = base.transform.rotation; } }}2.在相机MainCamera下创建一个新的Camera相机，并改变两个相机的Viewport Rect属性，以将屏幕均分
3.在场景中创建一个Cube
4.保存场景，打包成apk即可。即可使用手机陀螺仪控制相机旋转了。
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