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Computer Graphics

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    $\begingroup$ Are you asking this because someone else has declared it to be a cheat? If so, it might help to give the context of what they said, otherwise people can only guess what you are trying to find out. $\endgroup$ Commented Dec 8, 2018 at 23:26
  • $\begingroup$ Yes, someone else said it was like a "cheat". Basically this cheat is better looking than using a Gouraud shaded model. But my question is how and why? $\endgroup$ Commented Dec 10, 2018 at 0:01
  • $\begingroup$ and why is this not necessary generally applicable to any surface? Is it because it's just a "cheat" made for sphere approximations? not any others? $\endgroup$ Commented Dec 10, 2018 at 0:01