手指觸摸滑動物體帶慣性的旋轉 以及放大縮小（用插件easytouch 控制物體的旋轉和縮放）

using UnityEngine;

using UnityEngine.UI;

using System.Collections;

public class AR_TouchController : MonoBehaviour {

public GameObject[] scaleGameobject = new GameObject[]{} ;

public GameObject objectToRotate;

public float rotateSpead;

public float   scaleSpeed;

public bool smothMovement;

private bool interactive = true;

static AR_TouchController myInstance;

static int instances = 0;

public static AR_TouchController Instance

{

get

{

if (myInstance == null ) {

myInstance = FindObjectOfType( typeof(AR_TouchController )) as AR_TouchController;

}

return myInstance;

}

}

//Called at the biginning of the game

void Start()

{

//Calibrates the myInstance static variable

instances++;

if (instances > 1) {

// Debug.LogError ("Warning: There are more than one AR_TouchController at the level");

}else {

myInstance = this;

}

ResourceModel.myEvent += FindSon;

}

// Subscribe to events

void OnEnable(){

EasyTouch.On_SwipeStart += On_SwipeStart;

EasyTouch.On_Swipe += On_Swipe;

EasyTouch.On_SwipeEnd += On_SwipeEnd;

EasyTouch.On_PinchIn += On_PinchIn;

EasyTouch.On_PinchOut += On_PinchOut;

EasyTouch.On_PinchEnd += On_PinchEnd;

}

void OnDisable(){

UnsubscribeEvent();

}

void OnDestroy(){

UnsubscribeEvent();

}

void UnsubscribeEvent(){

EasyTouch.On_SwipeStart -= On_SwipeStart;

EasyTouch.On_Swipe -= On_Swipe;

EasyTouch.On_SwipeEnd -= On_SwipeEnd;

EasyTouch.On_PinchIn -= On_PinchIn;

EasyTouch.On_PinchOut -= On_PinchOut;

EasyTouch.On_PinchEnd -= On_PinchEnd;

}

// At the swipe beginning 

private void On_SwipeStart( Gesture gesture){

//Pich = objectToRotate.transform.eulerAngles.y;

//Yaw = objectToRotate.transform.eulerAngles.x;

}

float Yaw = 0;

float Pich = 0;

float targetYaw = 0;

float targetPich = 0;

// During the swipe

private void On_Swipe(Gesture gesture){

if (interactive) {

targetYaw = gesture.deltaPosition.x;

targetPich = gesture.deltaPosition.y;

if (smothMovement) {

// Yaw = Mathf.Lerp (Yaw, targetYaw, Time.deltaTime * rotateSpead);

// Pich = Mathf.Lerp (Pich, targetPich, Time.deltaTime * rotateSpead);

} else {

Yaw = Mathf.Lerp (Yaw, targetYaw, 1);

Pich = Mathf.Lerp (Pich, targetPich, 1);

}

}

}

void Update(){

if (objectToRotate == null)

return;

Yaw = Mathf.Lerp (Yaw, targetYaw, Time.deltaTime * rotateSpead);

Pich = Mathf.Lerp (Pich, targetPich, Time.deltaTime * rotateSpead);

//Debug.Log ("Yaw: " + Yaw + "  targetYaw:" + targetYaw);

if ((Yaw != targetYaw) || (Pich != targetPich)) {

objectToRotate.transform.Rotate (transform.up, -Mathf.Deg2Rad * Yaw * 20 * rotateSpead, Space.Self);

objectToRotate.transform.Rotate (transform.right, Mathf.Deg2Rad * Pich * 20 * rotateSpead, Space.World);

}

}

// At the swipe end 

private void On_SwipeEnd(Gesture gesture){

//Pich = objectToRotate.transform.eulerAngles.y;

//Yaw = objectToRotate.transform.eulerAngles.x;

targetYaw = 0;

targetPich = 0;

}

// At the pinch in

private void On_PinchIn(Gesture gesture){

if (interactive) {

float zoom = Time.deltaTime * gesture.deltaPinch * scaleSpeed;

Vector3 scale = objectToRotate.transform.localScale;

float zoomX = Mathf.Clamp (scale.x - zoom, 0.1f,3);

float zoomY = Mathf.Clamp (scale.y - zoom, 0.1f,3);

float zoomZ = Mathf.Clamp (scale.z - zoom, 0.1f,3);

objectToRotate.transform.localScale = new Vector3 (zoomX, zoomY, zoomZ);

//Debug.Log (objectToRotate.transform.localScale);

}

}

// At the pinch out

private void On_PinchOut(Gesture gesture){

if (interactive) {

float zoom = Time.deltaTime * gesture.deltaPinch * scaleSpeed;

Vector3 scale = objectToRotate.transform.localScale;

float zoomX = Mathf.Clamp (scale.x + zoom, 0.1f,3);

float zoomY = Mathf.Clamp (scale.y + zoom, 0.1f,3);

float zoomZ = Mathf.Clamp (scale.z + zoom, 0.1f,3);

objectToRotate.transform.localScale = new Vector3 (zoomX, zoomY, zoomZ);

//Debug.Log (zoomX);

}

}

// At the pinch end

private void On_PinchEnd(Gesture gesture){

}

// public mathod

public void SetTouchable(bool canTouch){

interactive = canTouch;

}

void FindSon(){

for (int i=0;i<scaleGameobject.Length;i++)

{

if (scaleGameobject [i].transform.childCount >= 1) {

objectToRotate = scaleGameobject [i].transform.GetChild (0).transform.transform.gameObject;

}

}

}

}