Unity引擎的按钮Button代码笔记

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

/// <summary>
/// 
/// </summary>
public class EventBtn : MonoBehaviour {
    public Transform PanelBg;
    public Button UpBtn;
    public Button DownBtn;
    private float PanelHeight; 
    //public  Transform  ControlPanel;
    void Awake()
    {
        PanelHeight = PanelBg.GetComponent<Collider>().bounds.size.y;
       Debug.Log(PanelHeight);
    }
    void Start () {
         
	}  
	void Update () {
        UpBtn.onClick.AddListener(delegate ()
        {
            this.OnClickEvent(true);
        });
        DownBtn.onClick.AddListener(delegate ()
        {
            this.OnClickEvent(false);
        });
    }
    public void UpBtnEvent()
    {
        UpBtn.transform.localScale = Vector3.zero;
        Vector3 newPos = new Vector3(transform.position.x, transform.position.y + PanelHeight, transform.position.z);
        PanelBg.transform.position = Vector3.Slerp(transform.position, newPos, 3);
        DownBtn.transform.localScale = Vector3.one;
    }
    public void DownBtnEvent()
    {
        DownBtn.transform.localScale = Vector3.zero;
        Vector3 newPos = new Vector3(transform.position.x, transform.position.y - PanelHeight, transform.position.z);
        PanelBg.transform.position = Vector3.Slerp(transform.position, newPos, 3);
        UpBtn.transform.localScale = Vector3.one; 
    }
    public void OnClickEvent(bool trueOrFalse)
    {
        switch (trueOrFalse)
        {
            case true:
                UpBtn.transform.localScale = Vector3.zero;
                Vector3 newPos = new Vector3(transform.position.x, transform.position.y + PanelHeight, transform.position.z);
                PanelBg.transform.position = Vector3.Slerp(transform.position, newPos, 3);
                DownBtn.transform.localScale = Vector3.one;
                break;
            case false:
                DownBtn.transform.localScale = Vector3.zero;
                Vector3 newPos0 = new Vector3(transform.position.x, transform.position.y - PanelHeight, transform.position.z);
                PanelBg.transform.position = Vector3.Slerp(transform.position, newPos0, 3);
                UpBtn.transform.localScale = Vector3.one;
                break;
        }
    }
}