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

public class CameraRectAutoFit : MonoBehaviour
{
    float targetaspect = 16.0f / 9.0f;
    // Start is called before the first frame update
    void Start()
    {
        // determine the game window's current aspect ratio
        float windowaspect = (float)Screen.width / (float)Screen.height;
        // current viewport height should be scaled by this amount
        float scaleheight = windowaspect / targetaspect;
        // obtain camera component so we can modify its viewport
        Camera camera = Camera.main;
        // if scaled height is less than current height, add letterbox
        if (scaleheight <= 1.0f)
        {
            Rect rect = camera.rect;
            rect.width = 1.0f;
            rect.height = scaleheight;
            rect.x = 0;
            rect.y = (1.0f - scaleheight) / 2.0f;
            camera.rect = rect;
        }
        else // add pillarbox
        {
            float scalewidth = 1.0f / scaleheight;
            Rect rect = camera.rect;
            rect.width = scalewidth;
            rect.height = 1.0f;
            rect.x = (1.0f - scalewidth) / 2.0f;
            rect.y = 0;
            camera.rect = rect;
        }
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}