Gyroscope

class in UnityEngine

示例脚本演示如何使用陀螺仪类查看IOS设备空间中的方向

// iOS 陀螺仪范例

using UnityEngine;
using UnityEngine.iOS;

public class ExampleScript : MonoBehaviour
{
    // 创建六个Plane作为测试参照物
    private GameObject[] quads = new GameObject[6];

    // 有适当的颜色，如红色、绿色、蓝色等
    public Texture[] labels;

    void Start()
    {
        // 使相机的颜色为单色调
        GetComponent<Camera>().backgroundColor = new Color(49.0f / 255.0f, 77.0f / 255.0f, 121.0f / 255.0f);
        GetComponent<Camera>().transform.position = new Vector3(0, 0, 0);
        GetComponent<Camera>().clearFlags = CameraClearFlags.SolidColor;

        // 创建六个Plane 作为测试参照物
        GameObject quad = GameObject.CreatePrimitive(PrimitiveType.Quad);

        quads[0] = createQuad(quad, new Vector3(1,   0,   0), new Vector3(0,  90, 0), "plus x",
                new Color(0.90f, 0.10f, 0.10f, 1), labels[0]);
        quads[1] = createQuad(quad, new Vector3(0,   1,   0), new Vector3(-90,   0, 0), "plus y",
                new Color(0.10f, 0.90f, 0.10f, 1), labels[1]);
        quads[2] = createQuad(quad, new Vector3(0,   0,   1), new Vector3(0,   0, 0), "plus z",
                new Color(0.10f, 0.10f, 0.90f, 1), labels[2]);
        quads[3] = createQuad(quad, new Vector3(-1,   0,   0), new Vector3(0, -90, 0), "neg x",
                new Color(0.90f, 0.50f, 0.50f, 1), labels[3]);
        quads[4] = createQuad(quad, new Vector3(0,  -1,  0), new Vector3(90,   0,  0), "neg y",
                new Color(0.50f, 0.90f, 0.50f, 1), labels[4]);
        quads[5] = createQuad(quad, new Vector3(0,   0, -1), new Vector3(0, 180,  0), "neg z",
                new Color(0.50f, 0.50f, 0.90f, 1), labels[5]);

        GameObject.Destroy(quad);
    }

    GameObject createQuad(GameObject quad, Vector3 pos, Vector3 rot, string name, Color col, Texture t)
    {
        Quaternion quat = Quaternion.Euler(rot);
        GameObject GO = Instantiate(quad, pos, quat);
        GO.name = name;
        GO.GetComponent<Renderer>().material.color = col;
        GO.GetComponent<Renderer>().material.mainTexture = t;
        GO.transform.localScale += new Vector3(0.25f, 0.25f, 0.25f);
        return GO;
    }

    protected void Update()
    {
        GyroModifyCamera();
    }

    protected void OnGUI()
    {
        GUI.skin.label.fontSize = Screen.width / 40;

        GUILayout.Label("Orientation: " + Screen.orientation);
        GUILayout.Label("input.gyro.attitude: " + Input.gyro.attitude);
        GUILayout.Label("iphone width/font: " + Screen.width + " : " + GUI.skin.label.fontSize);
    }

    /********************************************/

    // 陀螺仪是惯用右手的。 统一是左撇子。
    // 对相机做必要的改动。
    void GyroModifyCamera()
    {
        transform.rotation = GyroToUnity(Input.gyro.attitude);
    }

    private static Quaternion GyroToUnity(Quaternion q)
    {
        return new Quaternion(q.x, q.y, -q.z, -q.w);
    }
}

示例脚本演示如何使用陀螺仪类查看Android设备空间中的方向

[资源结构]

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Gyroscope : MonoBehaviour {

    private Quaternion gyroscopeQua;
    private Quaternion quatMult = new Quaternion(0, 0, 1, 0);
    private float speedH = 0.2f;    //差值
    
    protected void Start()
    {
        //激活陀螺仪
        Input.gyro.enabled = true;
        //因安卓设备的陀螺仪四元数水平值为[0,0,0,0]水平向下，所以将相机初始位置修改与其对齐
        transform.eulerAngles = new Vector3(90, 90, 0);
    }

    protected void Update()
    {
        GyroModifyCamera();
    }

    protected void GyroModifyCamera()
    {
        gyroscopeQua = Input.gyro.attitude * quatMult;      //为球面运算做准备
        Camera.main.transform.localRotation = Quaternion.Slerp(Camera.main.transform.localRotation, gyroscopeQua, speedH);
    }
    protected void OnGUI()
    {
        GUI.skin.label.fontSize = Screen.width / 40;
        
        GUILayout.Label("Orientation: " + Screen.orientation);
        GUILayout.Label("input.gyro.eulerAngles: " + Input.gyro.attitude.eulerAngles);
        GUILayout.Label("now eulerAngles: " + Camera.main.transform.eulerAngles);
        GUILayout.Label("iphone width/font: " + Screen.width + " : " + GUI.skin.label.fontSize);
    }
}

案例源代码