Radegast.Rendering.SceneWindow.GluPerspective C# (CSharp) Method

        private void GluPerspective(float fovy, float aspect, float zNear, float zFar)
        {
            float fH = (float)Math.Tan(fovy / 360 * (float)Math.PI) * zNear;
            float fW = fH * aspect;
            GL.Frustum(-fW, fW, -fH, fH, zNear, zFar);
        }