{
  "params": {
    "size": {
      "type": "range",
      "min": 12,
      "max": 40,
      "step": 1,
      "default": 20,
      "label": "Diameter",
      "describe": "Wheel diameter in metres. 12 is a travelling fair wheel, 40 a seaside landmark."
    },
    "gondolas": {
      "type": "range",
      "min": 8,
      "max": 24,
      "step": 2,
      "default": 16,
      "label": "Gondolas",
      "describe": "Number of gondolas round the wheel. Capped so cars never touch on a small wheel."
    },
    "colours": {
      "type": "choice",
      "options": [
        "fairground",
        "classic",
        "pastel",
        "midnight"
      ],
      "default": "fairground",
      "label": "Colours",
      "describe": "fairground (white frame, red, yellow, blue and green cars), classic (steel blue frame, red cars), pastel (cream frame, soft candy cars), midnight (navy frame, gold and violet cars)."
    },
    "car": {
      "type": "choice",
      "options": [
        "cabin",
        "open"
      ],
      "default": "cabin",
      "label": "Car",
      "describe": "cabin (closed six-sided car with windows and a pointed roof) or open (bench seat in a tub under a little canopy)."
    }
  },
  "presets": {
    "seaside landmark": {
      "size": 34,
      "gondolas": 24,
      "colours": "classic"
    },
    "travelling fair": {
      "size": 14,
      "gondolas": 10,
      "colours": "fairground",
      "car": "open"
    },
    "candy wheel": {
      "colours": "pastel",
      "car": "open"
    }
  },
  "night": {
    "bulb": {
      "zone": "bulb",
      "color": "#ffe39a",
      "intensity": 1.6,
      "describe": "Bulbs along the spokes, rims and the hub glow warm."
    },
    "window": {
      "zone": "window",
      "color": "#ffd38a",
      "intensity": 0.7,
      "describe": "The ticket booth is lit."
    }
  }
}