Zooms Photo In and Out

Photo.cs

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using DG.Tweening;
using System.Collections;


public class Photo : MonoBehaviour, IPointerUpHandler
{
    Texture rawImage;
    Image photo;
    RectTransform rect;
    Vector2 initRectSize;
    Vector2 initRectPos;
    private bool opened;
    private CanvasGroup bg;
    private Image zoom;

    void Start ()
    {
        photo = transform.FindChild("Image").GetComponent<Image>();
        rect = GetComponent<RectTransform>();
        initRectSize = rect.sizeDelta;
        initRectPos = rect.anchoredPosition;
        bg = transform.parent.FindChild("PhotoBg").GetComponent<CanvasGroup>();
        zoom = transform.FindChild("Zoom").GetComponent<Image>();
    }

    public void OnPointerUp(PointerEventData ped)
    {
        if (!opened)
        {
            Open();
        }
        else
        {
            Close();
        }

    }

    public void Open()
    {
        transform.DOKill();
        rect.DOSizeDelta(new Vector2(photo.mainTexture.width, photo.mainTexture.height), 0.5f);
        rect.DOAnchorPos(Vector2.zero, 0.5f);
        opened = true;
        Debug.Log(bg.name);
        bg.DOFade(0.75f, 0.25f);
        bg.blocksRaycasts = true;
        if (zoom)
            zoom.DOFade(0, 0.25f);
        bg.transform.SetAsLastSibling();
        transform.SetAsLastSibling();
    }

    public void Close()
    {
        transform.DOKill();
        rect.DOSizeDelta(initRectSize, 0.25f);
        rect.DOAnchorPos(initRectPos, 0.25f);
        opened = false;
        if (zoom)
            zoom.DOFade(1, 0.25f).SetDelay(0.25f);
        bg.DOFade(0.0f, 0.25f);
        bg.blocksRaycasts = false;
    }
}