安卓 触屏旋转、缩放、拖拽

公共函数，不放入任何模型上

using UnityEngine;using System.Collections;public class Globe : MonoBehaviour {public static int AugmentationObjectState = 0;//增强物体的状态：0表示没有检测到识别图； 1表示在识别图之上；2表示脱离识别图，但仍存在。// Use this for initializationvoid Start () {}// Update is called once per framevoid Update () {}}

放在需要旋转、缩放、拖拽的模型上

using UnityEngine;using System.Collections;public class GetModelScale : MonoBehaviour {public Vector3 go_modelDefaultScale;// Use this for initializationvoid Start () {}// Update is called once per framevoid Update () {go_modelDefaultScale = this.transform.localScale;}}

放在需要旋转、缩放、拖拽的模型上

using UnityEngine;using System.Collections;public class TouchToRotateAndScaleModel : MonoBehaviour {public GameObject go_model;private Vector3 go_modelCurScale;private Vector3 go_modelDefaultScale;  private float curScale = 1.0f; private float olddis = 0.0f;private float newdis = 0.0f;    private float RoatedSpeed = 100.0F;    public float y;    public float z;private Transform pickedObject = null;    // Use this for initialization    void Start()    {        y = 90;    }    // Update is called once per frame    void Update()    {//旋转功能if (Input.touchCount==1)        {if(Input.touches[0].phase == TouchPhase.Moved)//手指移动{ y += Input.GetAxis("Mouse X") * Time.deltaTime * RoatedSpeed;z += Input.GetAxis("Mouse Y") * Time.deltaTime * RoatedSpeed;if (z <= -90){z = Mathf.Ceil(-90);}if (z >= 90){z = Mathf.Ceil(90);}transform.eulerAngles = new Vector3(0, y, -z);}                   }//缩放功能if(Input.touchCount == 2){if (go_modelDefaultScale != go_model.GetComponent<GetModelScale>().go_modelDefaultScale)                          {                                                                 go_modelDefaultScale = go_modelCurScale = go_model.GetComponent<GetModelScale>().go_modelDefaultScale;       }if(Input.GetTouch(0).phase==TouchPhase.Moved||Input.GetTouch(1).phase==TouchPhase.Moved){var pos1=Input.GetTouch(0).position;var pos2=Input.GetTouch(1).position;newdis=Vector2.Distance(pos1,pos2);curScale = go_modelCurScale.x / go_modelDefaultScale.x;  if(newdis < olddis){go_model.transform.localScale -= go_modelDefaultScale * Time.deltaTime;}if(newdis>olddis) {go_model.transform.localScale += go_modelDefaultScale * Time.deltaTime;}go_modelCurScale = go_model.transform.localScale;  olddis=newdis;}}//拖动功能if(Input.touchCount == 3){if(Globe.AugmentationObjectState == 2 ){foreach (Touch touch in Input.touches) {Debug.Log("Touching at: " + touch.position);if (touch.phase == TouchPhase.Began) {Debug.Log("Touch phase began at: " + touch.position);pickedObject = go_model.transform;} else if (touch.phase == TouchPhase.Moved) {Debug.Log("Touch phase Moved");if (pickedObject != null) {Vector2 screenDelta = touch.deltaPosition;float halfScreenWidth = 0.5f * Screen.width;float halfScreenHeight = 0.5f * Screen.height;float dx = screenDelta.x / halfScreenWidth;float dy = screenDelta.y / halfScreenHeight;Vector3 objectToCamera = pickedObject.transform.position - Camera.main.transform.position;float distance = objectToCamera.magnitude;float fovRad = Camera.main.fieldOfView * Mathf.Deg2Rad;float motionScale = distance * Mathf.Tan(fovRad/2);Vector3 translationInCameraRef = new Vector3(motionScale * dx, motionScale * dy, 0);Vector3 translationInWorldRef =Camera.main.transform.TransformDirection(translationInCameraRef);pickedObject.position += translationInWorldRef;}} else if (touch.phase == TouchPhase.Ended) {Debug.Log("Touch phase Ended");pickedObject = null;}}}}    }}