UnityEditor.SceneView.GetVerticalFOV C# (CSharp) Method

        internal float GetVerticalFOV(float aspectNeutralFOV)
        {
            float f = (Mathf.Tan((aspectNeutralFOV * 0.5f) * 0.01745329f) * 0.7071068f) / Mathf.Sqrt(this.m_Camera.aspect);
            return ((Mathf.Atan(f) * 2f) * 57.29578f);
        }