Центрирование 3d относительно размера экрана

public class FitObjectInScene : MonoBehaviour {
 
    public List<Transform> listFitGameObjects = new List<Transform>();
    List<Transform> listFitGameObjectStartPositions = new List<Transform>();
    private float screenSizeXStart;
    private float screenSizeYStart;
 
    private float screenSizeXNew;
    private float screenSizeYNew;
 
    private float screenSizeXOld;
    private float screenSizeYOld;
 
    float coeficientX = 0;
    float coeficientY = 0;
 
    void Start () {
        screenSizeXStart = Screen.width;
        screenSizeYStart = Screen.height;
        screenSizeXOld = screenSizeXStart;
        screenSizeYOld = screenSizeYStart;
 
        listFitGameObjectStartPositions = listFitGameObjects;
 
        ResizeScrean();
    }
    
    
    void LateUpdate () {
 
        ResizeScrean();
    }
 
    void ResizeScrean()
    {
        screenSizeXNew = Screen.width;
        screenSizeYNew = Screen.height;
 
        if (screenSizeXOld != screenSizeXNew || screenSizeYOld != screenSizeYNew)
        {
            coeficientX = screenSizeXNew / screenSizeXStart;
            coeficientY = screenSizeYNew / screenSizeYStart;
            float _x;
            float _y;
            float _z;
            for (int i = 0; i < listFitGameObjects.Count; i++)
            {
                _x = listFitGameObjectStartPositions[i].localPosition.x;
                _y = listFitGameObjectStartPositions[i].localPosition.y;
                _z = listFitGameObjectStartPositions[i].localPosition.z;
                listFitGameObjects[i].localPosition = new Vector3(_x * coeficientX, _y * coeficientY, _z);
            }
            screenSizeXOld = screenSizeXNew;
            screenSizeYOld = screenSizeYNew;
        }
    }
}