File talk:Gouraud Shading applied to seashell graphics complex in Mathematica.svg

Is this image really Gouraud shaded?

My understanding is that Gouraud shading is when you linearly interpolate the brightness of each vertex so that each face is shown with a gradient and the surface as a whole appears smooth. But this image shows each polygon with a uniform brightness, and the resulting surface looks cleanly divided into rectangular faces. Am I missing something, or is this file incorrectly titled? Justinkunimune (talk) 18:05, 3 October 2022 (UTC)