unity 双重ScrollRect的水平移动与垂直移动叠加处理

为了记录下方便之后看，纯转载代码：转载地址：https://blog.csdn.net/zahll1993/article/details/51446856

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
public class VHScrollRect :ScrollRect
{

    public ScrollRect parentScroll; //创建列表的时候赋值（这个是对我来说是上下滑动的ScrollRect）

    public bool isVertical = false;

    private bool isSelf = false;

    public override void OnBeginDrag(PointerEventData eventData)
    {
        Vector2 touchDeltaPosition;
#if UNITY_EDITOR
        float delta_x = Input.GetAxis("Mouse X");
        float delta_y = Input.GetAxis("Mouse Y");
        touchDeltaPosition = new Vector2(delta_x, delta_y);
#endif

#if UNITY_ANDROID && !UNITY_EDITOR
        touchDeltaPosition = Input.GetTouch(0).deltaPosition;
#endif
        if (isVertical)
        {
            if (Mathf.Abs(touchDeltaPosition.x) < Mathf.Abs(touchDeltaPosition.y))
            {
                isSelf = true;
                base.OnBeginDrag(eventData);
            }
            else
            {
                isSelf = false;
                parentScroll.OnBeginDrag(eventData);
            }
        }
        else
        {
            if (Mathf.Abs(touchDeltaPosition.x) > Mathf.Abs(touchDeltaPosition.y))
            {
                isSelf = true;
                base.OnBeginDrag(eventData);
            }
            else
            {
                isSelf = false;
                parentScroll.OnBeginDrag(eventData);
            }
        }
    }

    public override void OnDrag(PointerEventData eventData)
    {
        if (isSelf)
        {
            base.OnDrag(eventData);
        }
        else
        {
            parentScroll.OnDrag(eventData);
        }
    }

 

    public override void OnEndDrag(PointerEventData eventData)
    {
        if (isSelf)
        {
            base.OnEndDrag(eventData);
        }
        else
        {
            parentScroll.OnEndDrag(eventData);
        }
    }

}