code: func Vec2Add(dest, v1, v2 Vec2) {
  	dest[0] = v1[0] + v2[0]
  	dest[1] = v1[1] + v2[1]
  }
docs: // Vec2 functions
  // Vec2Add performs a vector addition. dest = v1 + v2
  //
  //     dest   [out] The result vector.
  //     v1     [in]  The base vector.
  //     v2     [in]  The vector to add to v1.