Gyroscope

Description

Interface into the Gyroscope.

Use this class to access the gyroscope. The example script below shows how the Gyroscope class can be used to view the orientation in space of the iOS device.

#pragma strict
// iOS gyroscope example
//
// Create a cube with camera vector names on the faces.
// Allow the iPhone to show named faces as it is oriented.
public class ExampleScript extends MonoBehaviour {
	private var quads: GameObject[] = new GameObject[6];
	public var labels: Texture[];
	function Start() {
		// make camera solid colour and based at the origin
		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;
		// create the six quads forming the sides of a cube
		var quad: GameObject = 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);
	}
	// make a quad for one side of the cube
	function createQuad(quad: GameObject, pos: Vector3, rot: Vector3, name: String, col: Color, t: Texture) {
		var quat: Quaternion = Quaternion.Euler(rot);
		var GO: GameObject = 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 function Update() {
		GyroModifyCamera();
	}
	protected function 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);
	}
	// Make the necessary change to the camera.
	function GyroModifyCamera() {
		transform.rotation = GyroToUnity(Input.gyro.attitude);
	}
	private static function GyroToUnity(q: Quaternion) {
		return new Quaternion(q.x, q.y, -q.z, -q.w);
	}
}

// iOS gyroscope example
//
// Create a cube with camera vector names on the faces.
// Allow the iPhone to show named faces as it is oriented.

using UnityEngine;
using UnityEngine.iOS;

public class ExampleScript : MonoBehaviour
{
    // Faces for 6 sides of the cube
    private GameObject[] quads = new GameObject[6];

    // Textures for each quad, should be +X, +Y etc
    // with appropriate colors, red, green, blue, etc
    public Texture[] labels;

    void Start()
    {
        // make camera solid colour and based at the origin
        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;

        // create the six quads forming the sides of a cube
        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);
    }

    // make a quad for one side of the cube
    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);
    }

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

    // The Gyroscope is right-handed.  Unity is left handed.
    // Make the necessary change to the camera.
    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);
    }
}

iOS Screen-shot showing +Z, +Y and -X

Properties