{
  "params": {
    "bays": {
      "type": "range",
      "min": 1,
      "max": 7,
      "step": 1,
      "default": 3,
      "label": "Bays",
      "describe": "Number of 2 m bays including the gate bay, 1 to 7. The run is 2 × bays metres between end posts, centred on the origin along X; the gate sits in the middle bay."
    },
    "style": {
      "type": "choice",
      "options": [
        "picket",
        "slat",
        "iron"
      ],
      "default": "picket",
      "label": "Style",
      "describe": "picket (1 m pointed boards, cottage front garden), slat (1.5 m horizontal boards, modern backyard privacy fence), iron (1.2 m black railings with spear tops between brick piers)."
    },
    "gate": {
      "type": "choice",
      "options": [
        "single",
        "double",
        "none"
      ],
      "default": "single",
      "label": "Gate",
      "describe": "single (a 1 m pedestrian gate in the middle of its bay, short fence either side), double (two leaves filling the whole 2 m bay, a driveway or wide garden gate), none (plain fence, every bay the same)."
    },
    "finish": {
      "type": "choice",
      "options": [
        "white",
        "cream",
        "sage",
        "blue",
        "natural"
      ],
      "default": "white",
      "label": "Finish",
      "describe": "Paint: white, cream, sage (green), blue, or natural (bare wood; on iron it means classic black)."
    },
    "open": {
      "type": "range",
      "min": 0,
      "max": 90,
      "step": 5,
      "default": 0,
      "label": "Gate open",
      "describe": "How far the gate stands open, degrees (0 shut, 90 wide open). Leaves swing into the garden (toward -Z)."
    }
  },
  "presets": {
    "cottage front gate": {
      "style": "picket",
      "gate": "single",
      "finish": "white",
      "bays": 3
    },
    "backyard privacy": {
      "style": "slat",
      "gate": "single",
      "finish": "natural",
      "bays": 4
    },
    "manor railings": {
      "style": "iron",
      "gate": "double",
      "finish": "natural",
      "bays": 5,
      "open": 30
    }
  },
  "night": null
}