游戏引擎 Unity 鼠标控制 UI 放大、缩小、拖拽

文章目录

1. 代码2. 测试场景

1. 代码

using UnityEngine;

using UnityEngine.UI;

using UnityEngine.EventSystems;

public class UIDragZoom : MonoBehaviour, IDragHandler, IScrollHandler

{

private Vector2 originalSize;

private Vector2 originalPosition;

private RectTransform rectTransform;

private float minSize = 30f;

private float maxSize = 200f;

private void Start()

{

rectTransform = GetComponent();

originalSize = rectTransform.sizeDelta;

originalPosition = rectTransform.anchoredPosition;

}

public void OnDrag(PointerEventData eventData)

{

rectTransform.anchoredPosition += eventData.delta;

}

public void OnScroll(PointerEventData eventData)

{

float scroll = eventData.scrollDelta.y;

Vector2 newSize = rectTransform.sizeDelta + Vector2.one * scroll;

float temp = Mathf.Clamp(newSize.x, minSize, maxSize);

newSize = new Vector2(temp, temp);

rectTransform.sizeDelta = newSize;

}

public void ResetUI()

{

rectTransform.sizeDelta = originalSize;

rectTransform.anchoredPosition = originalPosition;

}

}

2. 测试场景

好文阅读

 您阅读本篇文章共花了：