UnityEditor.SceneView.GetMainCamera C# (CSharp) Method

        internal static Camera GetMainCamera()
        {
            Camera main = Camera.main;
            if (main != null)
            {
                return main;
            }
            Camera[] allCameras = Camera.allCameras;
            if ((allCameras != null) && (allCameras.Length == 1))
            {
                return allCameras[0];
            }
            return null;
        }