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

public class SinAlpha : MonoBehaviour
{
    [Range(0, 1)] public float amplitude = 0.5f;
    public float speed = 1;
    
    Graphic image;
    int a;
    

    private void Start()
    {
        image = GetComponent<Graphic>();
    }
    void Update()
    {
        Color c = image.color;
        c.a = amplitude + amplitude * Mathf.Sin(Time.time * speed)/2;
        image.color = c;
    }
}