`on-yz` coordinate bug

[rambip]

The draw.on-yz function should be named draw.on-zy, because the vector $(a, b)$ will be mapped to $a \vec{e_z} + b \vec{e_y}$.

Here is a proof:

#canvas(
  {
      draw.rotate(y: 90deg)
      draw.on-yz({
        draw.line((0, 0), (1, 0))
      })
  }
)

Since the world is rotated around y, y should not change and z should become x or -x

This means we expect this:

But what we get is this:

[rambip]

Oh, I realized I misread the docs: this is intended.

But to be honest, this is still error-prone, and the docs would be nicer with a clear mention like this one:

⚠️ conceptually, this function should be called on-zy, since the first coordinate will be mapped to z, and the second to y. Here is the change of coordinates: ...