Unity中手指控制模型的旋转以及缩放

最新推荐文章于 2025-07-04 16:14:58 发布

唐-三-藏

最新推荐文章于 2025-07-04 16:14:58 发布

阅读量4.3k

点赞数 7

CC 4.0 BY-SA版权

分类专栏： Unity

本文链接：https://blog.youkuaiyun.com/weixin_40650916/article/details/83383279

Unity 专栏收录该内容

7 篇文章

订阅专栏

本篇博客介绍了一个Unity中的FingerController类，该类通过触控输入实现对象的旋转和缩放操作。使用枚举FingerIE区分不同数量的手指触控，并通过协程分别处理一根手指旋转和两根手指缩放的功能。代码展示了如何监听触摸事件并根据不同的触摸状态调整游戏对象的旋转和缩放。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

直接上代码吧，主要是两个协程

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
public enum FingerIE
{
    zero,
    OneFinger,
    TwoFinger,
}
public class FingerController : MonoBehaviour
{

    public Vector3 initialRot;
    public Vector3 initialSca;
    public static FingerController instance;
    IEnumerator ie;
    FingerIE finger_num=FingerIE.zero;
    void Awake()
    {
        instance = this;
    }
    // Update is called once per frame
    void Update()
    {
       
        if (Input.touchCount == 0)
        {
            if (finger_num != FingerIE.zero)
            {
                StopCoroutine(ie);
                ie = null;
                finger_num = FingerIE.zero;
            }
        }
        else if (Input.touchCount == 1)
        {
            if (finger_num != FingerIE.OneFinger)
            {
                if (ie != null)
                {
                    StopCoroutine(ie);
                }
                ie = IMonitorMouseOneFinger();
                StartCoroutine(ie);
                finger_num = FingerIE.OneFinger;
            }
        }
        else if (Input.touchCount == 2)
        {
            if (finger_num != FingerIE.TwoFinger)
            {
                if (ie != null)
                {
                    StopCoroutine(ie);
                }
                ie = IIMonitorMouseTwoFinger();
                StartCoroutine(ie);
                finger_num = FingerIE.TwoFinger;
            }
        }
        
    }
    /// <summary>
    /// 一根手指控制转动
    /// </summary>
    /// <returns></returns>
    IEnumerator IMonitorMouseOneFinger()
    {

        Touch oneFingerTouch;
        while (true)
        {
            oneFingerTouch = Input.GetTouch(0);
            if (oneFingerTouch.phase == TouchPhase.Moved)
            {
                Vector2 deltaPos = oneFingerTouch.deltaPosition;
                transform.Rotate(-Vector3.forward * deltaPos.x * 0.2f, Space.World);
                transform.Rotate(-Vector3.left * deltaPos.y * 0.2f, Space.World);
            }
            yield return 0;
        }
    }
    /// <summary>
    /// 两个手指控制缩放
    /// </summary>
    /// <returns></returns>
    IEnumerator IIMonitorMouseTwoFinger()
    {
        Touch firstOldTouch;
        Touch secondOldTouch;
        Touch firstNewTouch;
        Touch secondNewTouch;
        float oldDistance;
        float newDistance;
        while (true)
        {
            firstOldTouch = Input.GetTouch(0);
            secondOldTouch = Input.GetTouch(1);
            oldDistance = Vector2.Distance(firstOldTouch.position, secondOldTouch.position);
            yield return 0;
            firstNewTouch = Input.GetTouch(0);
            secondNewTouch = Input.GetTouch(1);
            newDistance = Vector2.Distance(firstNewTouch.position, secondNewTouch.position);
            if (oldDistance > newDistance && this.transform.localScale.x > 0.25f)
            {
                this.transform.localScale -= Vector3.one * 0.1f;
            }
            else if (oldDistance < newDistance && this.transform.localScale.x < 2f)
            {
                this.transform.localScale += Vector3.one * 0.1f;
            }
        }
    }
    /// <summary>
    /// 复位
    /// </summary>
    public void ResetRot()
    {
        this.transform.localEulerAngles = initialRot;
        this.transform.localScale = initialSca;
    }
}