using UnityEngine;
using UnityEngine.UI;

public class AutoCanvasScaler : MonoBehaviour
{
    // 기준 해상도
    private static readonly Vector2 BASIC_RESOULUTION = new Vector2(1080, 1920);

    private void Awake()
    {
        float basic_Ratio = BASIC_RESOULUTION.x / BASIC_RESOULUTION.y;
        float curr_Device_Ratio = Screen.width / (float)Screen.height;

        float resultRatio = curr_Device_Ratio / basic_Ratio;

        // 1대1 비율에 가까움(탭, 아이패드 등)
        if (resultRatio > 1)
        {
            float match = 0.5f + (resultRatio - 1f);
            if (match < 0)
                match = 0;
            this.GetComponent<CanvasScaler>().matchWidthOrHeight = match;
        }
        // 한쪽 해상도가 더 길다.
        else
        {
            float match = 0.5f - resultRatio;
            if (match > 1)
                match = 1;
            this.GetComponent<CanvasScaler>().matchWidthOrHeight = match;
        }
    }
}