unity手指触摸放大缩小，旋转，双击，长按

r囧r小猫 2022-04-12 13:44 253阅读 0赞

模型放大缩小：

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class Enlarge : MonoBehaviour {
    
        Vector2 oldPos1;
        Vector2 oldPos2;
    
    	// Use this for initialization
    	void Start () {
    		
    	}
    	
    	// Update is called once per frame
    	void Update () {
            if(Input.touchCount == 2)
            {
                if(Input .GetTouch(0).phase==TouchPhase.Moved||Input .GetTouch(1).phase == TouchPhase.Moved)
                {
                    Vector2 newPos1 = Input.GetTouch(0).position;
                    Vector2 newPos2 = Input.GetTouch(1).position;
                    if (IsEnlarge(oldPos1, oldPos2, newPos1, newPos2))
                    {
                        float oldScale = transform.localScale.x;
                        float newScale = oldScale * 1.025f;
                        transform.localScale = new Vector3(newScale, newScale, newScale);
                    }
                    else
                    {
                        float oldScale = transform.localScale.x;
                        float newScale = oldScale / 1.025f;
                        transform.localScale = new Vector3(newScale, newScale, newScale);
                    }
                    oldPos1 = newPos1;
                    oldPos2 = newPos2;
                }
            }
    		
    	}
        //手势判断
        bool IsEnlarge(Vector2 oP1,Vector2 oP2,Vector2 nP1,Vector2 nP2)
        {
            float length1 = Mathf.Sqrt((oP1.x - oP2.x) * (oP1.x - oP2.x) + (oP1.y - oP2.y) * (oP1.y - oP2.y));
            float length2 = Mathf.Sqrt((nP1.x - nP2.x) * (nP1.x - nP2.x) + (nP1.y - nP2.y) * (nP1.y - nP2.y));
            if (length1 < length2)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
    }

手指滑动模型旋转：

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class AiXiRotate : MonoBehaviour {
    
        float Xspeed = 150f;
    
    	// Use this for initialization
    	void Start () {
    		
    	}
    	
    	// Update is called once per frame
    	void Update () {
    		if(Input.GetMouseButton(0))
            {
                if(Input.touchCount == 1)
                {
                    if(Input.GetTouch(0).phase == TouchPhase.Moved)//触摸的一根手指滑动
                    {
                        transform .Rotate(Vector3.up* Input.GetAxis("Mouse X") * (-Xspeed) * Time.deltaTime);
                    }
                }
            }
    	}
    }

双击和长按手机屏幕：在这里必须得双击屏幕里的模型或长按模型使模型销毁

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    using UnityEngine.UI;
    
    public class TouchTap : MonoBehaviour {
    
        private float touchTime;
        private bool newTouch=false ;
        public Text text;
    
    	// Use this for initialization
    	void Start () {
    		
    	}
    	
    	// Update is called once per frame
    	void Update () {
    		if(Input.GetMouseButtonDown(0))
            {
                //从相机发出一条射线
                Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
                RaycastHit hitInfo;
                if(Physics.Raycast(ray,out hitInfo))
                {
                    //if (hitInfo.collider.gameObject.name == "AiXi(Clone)")
                    //{
                    //    if (Input.GetMouseButtonDown(0))
                    //    {
                    //        newTouch = true;
                    //        touchTime = Time.time;
                    //        Debug.Log(newTouch);
                    //    }
                    //     if(Input.GetMouseButtonUp(0))
                    //    {
                    //        newTouch = false;
                    //        Debug.Log(newTouch);
                    //    }
                    //}
    
                    if (hitInfo.collider.gameObject.name == "AiXi(Clone)")
                    {
                        //双击模型使模型销毁
                        if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Began)//几个手指碰到屏幕&&刚点击屏幕
                        {
                            if (Input.GetTouch(0).tapCount == 2)
                            {
                                Destroy(hitInfo.collider.gameObject);
                            }
    
                        }
                        //长按
                        if (Input.touchCount == 1)
                        {
                            Touch touch = Input.GetTouch(0);
                            if (touch.phase == TouchPhase.Began)
                            {
                                newTouch = true;
                                touchTime = Time.time;
                            }
                            else if (touch.phase == TouchPhase.Stationary)//手指触摸屏幕但没有移动
                            {
                                if (newTouch == true && Time.time - touchTime > 1f)
                                {
                                    newTouch = false;
                                    Destroy(hitInfo.collider.gameObject);
                                }
                            }
                            else
                            {
                                newTouch = false;
                            }
                        }
                    }
    
                }
            }
    	}
    }