(model
  (params
    (number wall 2mm :label "House wall" :min 1.5 :max 3 :step 0.5)
    (number roof_clearance 0.3mm :label "Roof clearance" :min 0.2 :max 0.6 :step 0.1)
    (toggle house_print_layout true :label "House print layout (changes export)"))
  (part house
    (let* ((outside (cylinder 18mm 28mm))
           (room (translate 0 0 2mm (cylinder (- 18mm wall) 27mm)))
           (doorway (translate 0 -16mm 9mm
             (rotate 90deg 0 0 (cylinder 8.5mm 18mm :align '(center center center))))))
      (difference outside room doorway)))
  (part roof
    (let* ((rim-radius (+ 18mm roof_clearance))
           (skirt-height 3mm)
           (cap (cone 26mm 2mm 26mm))
           (rim-opening (translate 0 0 -1mm (cylinder rim-radius (+ skirt-height 1mm))))
           (inside (translate 0 0 skirt-height (cone rim-radius 0mm rim-radius))))
      (translate (if house_print_layout 52mm 0mm) 0 (if house_print_layout 0mm 25mm)
        (difference cap rim-opening inside))))
  (verify
    (tag separate-house-and-roof)
    (metric pieces (stl connected-component-count))
    (expect pieces (= 2))))