Unity手势,单指移动,双指旋转缩放

Unity手势,单指移动,双指旋转缩放

今天记录一份代码,unity自带的手势做一点简单的入门级的操作
Unity手势,单指移动,双指旋转缩放_第1张图片

上代码


using UnityEngine;
using UnityEngine.UI;
///
/// 点击屏幕实现缩放与旋转,移动
///
public class EasyTouchManager5_Demo : MonoBehaviour
{

private Touch oldTouch1;  //上次触摸点1(手指1)  
private Touch oldTouch2;  //上次触摸点2(手指2)  
//这是场景里的文本,我打log用的,不用可以删掉
public Text _text;//****************************
private string text;//****************************

void Update()
{

    //没有触摸  
    if (Input.touchCount <= 0)
    {
        //Debug.Log("Input.touchCount = 0");
        
        return;
    }

    ////单点触摸, 水平上下移动
    if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved)
    {
        Debug.Log("单点触摸, 水平上下移动");
        text = "单点触摸, 水平上下移动";//****************************
        _text.text = text;//****************************
        var deltaposition = Input.GetTouch(0).deltaPosition;
        transform.Translate(new Vector3(deltaposition.x * 0.01f, deltaposition.y * 0.01f, 0f),Space.World);
    }
    //单点触摸, 水平上下旋转  
    if (2 == Input.touchCount)
    {
        Debug.Log("单点触摸, 水平上下旋转  ");
        text = "单点触摸, 水平上下旋转";//****************************
        _text.text = text;//****************************
        Touch touch = Input.GetTouch(0);
        Vector2 deltaPos = touch.deltaPosition;
        transform.Rotate(Vector3.down * deltaPos.x, Space.World);
        transform.Rotate(Vector3.right * deltaPos.y, Space.World);
    }

    //多点触摸, 放大缩小  
    Touch newTouch1 = Input.GetTouch(0);
    Touch newTouch2 = Input.GetTouch(1);

    //第2点刚开始接触屏幕, 只记录,不做处理  
    if (newTouch2.phase == TouchPhase.Began)
    {
        oldTouch2 = newTouch2;
        oldTouch1 = newTouch1;
        return;
    }

    //计算老的两点距离和新的两点间距离,变大要放大模型,变小要缩放模型  
    float oldDistance = Vector2.Distance(oldTouch1.position, oldTouch2.position);
    float newDistance = Vector2.Distance(newTouch1.position, newTouch2.position);

    //两个距离之差,为正表示放大手势, 为负表示缩小手势  
    float offset = newDistance - oldDistance;

    //放大因子, 一个像素按 0.01倍来算(100可调整)  
    float scaleFactor = offset / 100f;
    Vector3 localScale = transform.localScale;
    Vector3 scale = new Vector3(localScale.x + scaleFactor,
                                localScale.y + scaleFactor,
                                localScale.z + scaleFactor);

    //最小缩放到 0.3 倍  
    if (scale.x > 0.3f && scale.y > 0.3f && scale.z > 0.3f)
    {
        transform.localScale = scale;
    }

    //记住最新的触摸点,下次使用  
    oldTouch1 = newTouch1;
    oldTouch2 = newTouch2;

}

}

#不过还是有些缺陷的,旋转和缩放会同时进行,后变有时间我再更新一下

提示:脚本挂在被操作物体哦

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