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3D Engine from scratch

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3Dinator

A 3D engine made completely from scratch
using only OpenGL
It's re-starting cuz I moved from SDL to OpenGL

Those meshes were made manually, so this bottle
is more amazing than the whole code

I changed the normal projection matrix for a vector because
it seems to be faster and cleaner (maybe idk)

Since I'm using .obj files now, I'll let the bottle live here

Mesh bottle = {
  // Bottom
  -0.5, -3, -1, 0, 0, 0, /* */ +0.5, -3, -1, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  +0.5, -3, -1, 0, 0, 0, /* */ +1, -3, -0.5, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  +1, -3, -0.5, 0, 0, 0, /* */ +1, -3, +0.5, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  +1, -3, +0.5, 0, 0, 0, /* */ +0.5, -3, +1, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  +0.5, -3, +1, 0, 0, 0, /* */ -0.5, -3, +1, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  -0.5, -3, +1, 0, 0, 0, /* */ -1, -3, +0.5, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  -1, -3, +0.5, 0, 0, 0, /* */ -1, -3, -0.5, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  -1, -3, -0.5, 0, 0, 0, /* */ -0.5, -3, -1, 0, 0, 0, /* */ +0, -3, +0, 0, 0, 0,
  // Faces
  -0.5, -3, -1, 0, 0, 0, /* */ -0.5, +1, -1, 0, 0, 0, /* */ +0.5, -3, -1, 0, 0, 0,
  -0.5, +1, -1, 0, 0, 0, /* */ +0.5, +1, -1, 0, 0, 0, /* */ +0.5, -3, -1, 0, 0, 0,
  +0.5, -3, -1, 0, 0, 0, /* */ +0.5, +1, -1, 0, 0, 0, /* */ +1, -3, -0.5, 0, 0, 0,
  +0.5, +1, -1, 0, 0, 0, /* */ +1, +1, -0.5, 0, 0, 0, /* */ +1, -3, -0.5, 0, 0, 0,
  +1, -3, -0.5, 0, 0, 0, /* */ +1, +1, -0.5, 0, 0, 0, /* */ +1, -3, +0.5, 0, 0, 0,
  +1, +1, -0.5, 0, 0, 0, /* */ +1, +1, +0.5, 0, 0, 0, /* */ +1, -3, +0.5, 0, 0, 0,
  +1, -3, +0.5, 0, 0, 0, /* */ +1, +1, +0.5, 0, 0, 0, /* */ +0.5, -3, +1, 0, 0, 0,
  +1, +1, +0.5, 0, 0, 0, /* */ +0.5, +1, +1, 0, 0, 0, /* */ +0.5, -3, +1, 0, 0, 0,
  +0.5, -3, +1, 0, 0, 0, /* */ +0.5, +1, +1, 0, 0, 0, /* */ -0.5, -3, +1, 0, 0, 0,
  +0.5, +1, +1, 0, 0, 0, /* */ -0.5, +1, +1, 0, 0, 0, /* */ -0.5, -3, +1, 0, 0, 0,
  -0.5, -3, +1, 0, 0, 0, /* */ -0.5, +1, +1, 0, 0, 0, /* */ -1, -3, +0.5, 0, 0, 0,
  -0.5, +1, +1, 0, 0, 0, /* */ -1, +1, +0.5, 0, 0, 0, /* */ -1, -3, +0.5, 0, 0, 0,
  -1, -3, +0.5, 0, 0, 0, /* */ -1, +1, +0.5, 0, 0, 0, /* */ -1, -3, -0.5, 0, 0, 0,
  -1, +1, +0.5, 0, 0, 0, /* */ -1, +1, -0.5, 0, 0, 0, /* */ -1, -3, -0.5, 0, 0, 0,
  -1, -3, -0.5, 0, 0, 0, /* */ -1, +1, -0.5, 0, 0, 0, /* */ -0.5, -3, -1, 0, 0, 0,
  -1, +1, -0.5, 0, 0, 0, /* */ -0.5, +1, -1, 0, 0, 0, /* */ -0.5, -3, -1, 0, 0, 0,
  // Curve
  -0.5, +1, -1, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0, /* */ +0.5, +1, -1, 0, 0, 0,
  -0.5, +1, -1, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0,
  +0.5, +1, -1, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0, /* */ +1, +1, -0.5, 0, 0, 0,
  +0.5, +1, -1, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0,
  +1, +1, -0.5, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0, /* */ +1, +1, +0.5, 0, 0, 0,
  +1, +1, -0.5, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0,
  +1, +1, +0.5, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0, /* */ +0.5, +1, +1, 0, 0, 0,
  +1, +1, +0.5, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0,
  +0.5, +1, +1, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0, /* */ -0.5, +1, +1, 0, 0, 0,
  +0.5, +1, +1, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0,
  -0.5, +1, +1, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0, /* */ -1, +1, +0.5, 0, 0, 0,
  -0.5, +1, +1, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0,
  -1, +1, +0.5, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0, /* */ -1, +1, -0.5, 0, 0, 0,
  -1, +1, +0.5, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0,
  -1, +1, -0.5, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0, /* */ -0.5, +1, -1, 0, 0, 0,
  -1, +1, -0.5, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0,
  // Neck
  -0.1, +3, -0.2, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0,
  -0.1, +3, -0.2, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0, /* */ -0.2, +3, -0.1, 0, 0, 0,
  +0.1, +3, -0.2, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0,
  +0.1, +3, -0.2, 0, 0, 0, /* */ +0.1, 2, -0.2, 0, 0, 0, /* */ -0.1, +3, -0.2, 0, 0, 0,
  +0.2, +3, -0.1, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0,
  +0.2, +3, -0.1, 0, 0, 0, /* */ +0.2, 2, -0.1, 0, 0, 0, /* */ +0.1, +3, -0.2, 0, 0, 0,
  +0.2, +3, +0.1, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0,
  +0.2, +3, +0.1, 0, 0, 0, /* */ +0.2, 2, +0.1, 0, 0, 0, /* */ +0.2, +3, -0.1, 0, 0, 0,
  +0.1, +3, +0.2, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0,
  +0.1, +3, +0.2, 0, 0, 0, /* */ +0.1, 2, +0.2, 0, 0, 0, /* */ +0.2, +3, +0.1, 0, 0, 0,
  -0.1, +3, +0.2, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0,
  -0.1, +3, +0.2, 0, 0, 0, /* */ -0.1, 2, +0.2, 0, 0, 0, /* */ +0.1, +3, +0.2, 0, 0, 0,
  -0.2, +3, +0.1, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0,
  -0.2, +3, +0.1, 0, 0, 0, /* */ -0.2, 2, +0.1, 0, 0, 0, /* */ -0.1, +3, +0.2, 0, 0, 0,
  -0.2, +3, -0.1, 0, 0, 0, /* */ -0.1, 2, -0.2, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0,
  -0.2, +3, -0.1, 0, 0, 0, /* */ -0.2, 2, -0.1, 0, 0, 0, /* */ -0.2, +3, +0.1, 0, 0, 0,
  // Top 
  -0.1, +3, -0.2, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ +0.1, +3, -0.2, 0, 0, 0,
  +0.1, +3, -0.2, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ +0.2, +3, -0.1, 0, 0, 0,
  +0.2, +3, -0.1, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ +0.2, +3, +0.1, 0, 0, 0,
  +0.2, +3, +0.1, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ +0.1, +3, +0.2, 0, 0, 0,
  +0.1, +3, +0.2, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ -0.1, +3, +0.2, 0, 0, 0,
  -0.1, +3, +0.2, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ -0.2, +3, +0.1, 0, 0, 0,
  -0.2, +3, +0.1, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ -0.2, +3, -0.1, 0, 0, 0,
  -0.2, +3, -0.1, 0, 0, 0, /* */ +0, +3, +0, 0, 0, 0, /* */ -0.1, +3, -0.2, 0, 0, 0
};

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3D Engine from scratch

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