fn cube(sideLength, center) {
  l = sideLength / 2
  x = center[0]
  y = center[1]
  p0 = [-l + x, -l + y]
  p1 = [-l + x, l + y]
  p2 = [l + x, l + y]
  p3 = [l + x, -l + y]

  return startSketchOn(XY)
    |> startProfile(at = p0)
    |> line(endAbsolute = p1)
    |> line(endAbsolute = p2)
    |> line(endAbsolute = p3)
    |> line(endAbsolute = p0)
    |> close()
    |> extrude(length = sideLength)
}

myCube = cube(sideLength = 40, center = [0, 0])