Demo链接:

https://download.csdn.net/download/qq_41973169/89446832https://download.csdn.net/download/qq_41973169/89446832

一、前言

Unity版本:2020.1.x

在Unity游戏开发中，滚动视图中元素的定位是一个常见需求。为了解决这个问题，我们可以编写一个名为 "ScrollLocate" 的脚本来实现这个功能。

二、效果 

三、完整代码

using UnityEngine;
using UnityEngine.UI;public class ScrollLocate : MonoBehaviour
{public RectTransform itemTransform;private ScrollRect _scrollRect;private RectTransform _contentTransform;private RectTransform _viewportTransform;private void Start(){_scrollRect = GetComponent<ScrollRect>();_contentTransform = _scrollRect.content;_viewportTransform = _scrollRect.viewport;}public void LocateTargetInViewport(){// 获取目标RectTransform和viewport的局部坐标边界Vector3[] itemCorners = new Vector3[4];itemTransform.GetWorldCorners(itemCorners);Vector3[] viewportCorners = new Vector3[4];_viewportTransform.GetWorldCorners(viewportCorners);// 转换世界坐标到内容局部坐标for (int i = 0; i < 4; i++){itemCorners[i] = _contentTransform.InverseTransformPoint(itemCorners[i]);viewportCorners[i] = _contentTransform.InverseTransformPoint(viewportCorners[i]);}// 获取边界值float viewportMinX = viewportCorners[0].x;float viewportMaxX = viewportCorners[2].x;float viewportMinY = viewportCorners[0].y;float viewportMaxY = viewportCorners[2].y;float itemMinX = itemCorners[0].x;float itemMaxX = itemCorners[2].x;float itemMinY = itemCorners[0].y;float itemMaxY = itemCorners[2].y;Vector2 contentPosition = _contentTransform.anchoredPosition;// 水平滚动处理if (_scrollRect.horizontal){if (itemMaxX > viewportMaxX) // Item超出右边界{float difference = itemMaxX - viewportMaxX;contentPosition.x -= difference;}else if (itemMinX < viewportMinX) // Item超出左边界{float difference = viewportMinX - itemMinX;contentPosition.x += difference;}}// 垂直滚动处理if (_scrollRect.vertical){if (itemMaxY > viewportMaxY) // Item超出上边界{float difference = itemMaxY - viewportMaxY;contentPosition.y -= difference;}else if (itemMinY < viewportMinY) // Item超出下边界{float difference = viewportMinY - itemMinY;contentPosition.y += difference;}}_contentTransform.anchoredPosition = contentPosition;}private void Update(){if (Input.GetKeyDown(KeyCode.Space)){LocateTargetInViewport();}}
}

有什么不对的地方或者不明白的地方可以直接问我