using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
public class ShiYuanOnDrag : UIBehaviour, IDragHandler, IPointerDownHandler, IEndDragHandler, IBeginDragHandler
{
RectTransform _rectTransform;
private RectTransform _parent;
private float _parentWidtth;
private float _parentHeight;
protected override void Awake()
{
base.Awake();
_parent = transform.parent as RectTransform;
_parentWidtth = ((float)(_parent.rect.width - 50)) / 2;
_parentHeight = (float)(_parent.rect.height - 50) / 2;
_rectTransform = GetComponent<RectTransform>();
}
public void OnDrag(PointerEventData eventData)
{
// if (_rectTransform.anchoredPosition.x < _parentWidtth &&
// _rectTransform.anchoredPosition.x > -_parentWidtth &&
// _rectTransform.anchoredPosition.y < _parentHeight &&
// _rectTransform.anchoredPosition.y > -_parentHeight
// )
// {
_rectTransform.anchoredPosition += eventData.delta;
// }
}
public void OnPointerDown(PointerEventData eventData)
{
transform.SetAsLastSibling();
}
public void OnEndDrag(PointerEventData eventData)
{
// if (_rectTransform.anchoredPosition.x < _parentWidtth &&
// _rectTransform.anchoredPosition.x > -_parentWidtth &&
// _rectTransform.anchoredPosition.y < _parentHeight &&
// _rectTransform.anchoredPosition.y > -_parentHeight
// )
// {
// _rectTransform.anchoredPosition += eventData.delta;
// }
if (_rectTransform.anchoredPosition.x < -_parentWidtth)
{
_rectTransform.SetLocalPosX(-_parentWidtth);
}
if (_rectTransform.anchoredPosition.x > _parentWidtth)
{
_rectTransform.SetLocalPosX(_parentWidtth);
}
if (_rectTransform.anchoredPosition.y < -_parentHeight)
{
_rectTransform.SetLocalPosY(-_parentHeight);
}
if (_rectTransform.anchoredPosition.y > _parentHeight)
{
_rectTransform.SetLocalPosY(_parentHeight);
}
}
public void OnBeginDrag(PointerEventData eventData)
{
if (_rectTransform.anchoredPosition.x < -_parentWidtth)
{
_rectTransform.SetLocalPosX(-_parentWidtth);
}
if (_rectTransform.anchoredPosition.x > _parentWidtth)
{
_rectTransform.SetLocalPosX(_parentWidtth);
}
if (_rectTransform.anchoredPosition.y < -_parentHeight)
{
_rectTransform.SetLocalPosY(-_parentHeight);
}
if (_rectTransform.anchoredPosition.y > _parentHeight)
{
_rectTransform.SetLocalPosY(_parentHeight);
}
}
}
原文地址:https://blog.csdn.net/qq_36848370/article/details/113650365
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