Object to appear in FULL in camera view no matter the size

Questions & Answers
1

Hi everyone. I’m very very new to Unity so please go easy on me but basically I have a problem that I do not know how to solve for the life of me. So I have to create a maze Generator(which I have done) but how can I make sure that the entire maze will be within camera view and with minimum white space? Any answers or code snippets would be very appreciated. Thank you so much.

2

This script will work with orthographic cameras. You can make the script work with perspective cameras but it will take a bit of tinkering. Added comments for further explanation. To work right, you need to make sure that the center of your maze and the camera are aligned.

using UnityEngine;

public class FillScreen : MonoBehaviour
{
    public float perspectiveCompensation = 0.95f;

    void Start()
    {
        Camera cam = Camera.main;
        Bounds bounds = GetComponent<MeshRenderer>().bounds;
        Vector2 screenSize = new Vector2(Screen.width, Screen.height);

        //Get the position on screen.
        Vector2 screenPosition = cam.WorldToScreenPoint(bounds.center);
        //Get the position on screen from the position + the bounds of the object.
        Vector2 sizePosition = cam.WorldToScreenPoint(bounds.center + bounds.size);
        //By subtracting the screen position from the size position, we get the size of the object on screen.
        Vector2 objectSize = sizePosition - screenPosition;
        //Calculate how many times the object can be scaled up.
        Vector2 scaleFactor = screenSize / objectSize;
        //The maximum scale is the one form the longest side, with the lowest scale factor.
        float maximumScale = Mathf.Min(scaleFactor.x, scaleFactor.y);

        if (cam.orthographic)
        {
            //Scale the orthographic size.
            cam.orthographicSize = cam.orthographicSize / maximumScale;
        }
        else
        {
            //Set the scale of the object.
            transform.localScale = transform.localScale * maximumScale * perspectiveCompensation;
        }
    }
}