{
  "params": {
    "floors": {
      "type": "range",
      "min": 10,
      "max": 60,
      "step": 1,
      "default": 30,
      "label": "Floors",
      "describe": "Number of storeys, 10 to 60, at 3.6 m each: 30 floors is 108 m to the roof, 60 floors 216 m. The crown adds 6 to 40 m."
    },
    "crown": {
      "type": "choice",
      "options": [
        "flat",
        "spire",
        "stepped"
      ],
      "default": "spire",
      "label": "Crown",
      "describe": "flat (parapet, plant room and antenna masts), spire (receding blocks under a tall needle), stepped (art-deco ziggurat with floodlit edges and a mast)."
    },
    "glass": {
      "type": "choice",
      "options": [
        "sky blue",
        "teal",
        "bronze",
        "silver",
        "emerald",
        "smoke"
      ],
      "default": "sky blue",
      "label": "Glass",
      "describe": "Glass tint: sky blue, teal, bronze (warm brown, 1980s), silver (pale reflective), emerald (green), smoke (dark grey)."
    },
    "setbacks": {
      "type": "toggle",
      "default": true,
      "label": "Setbacks",
      "describe": "Step the tower in two or three tiers that get narrower as it rises, with roof terraces at each step. Off gives one straight shaft."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 999,
      "step": 1,
      "default": 11,
      "label": "Seed",
      "describe": "Variation seed: footprint size and proportion, facade system (grid, ribbon, pinstripe or deco piers), spandrel colours, podium, where the setbacks fall, plant floors and which offices are lit at night."
    }
  },
  "presets": {
    "art deco landmark": {
      "floors": 48,
      "crown": "stepped",
      "glass": "bronze",
      "setbacks": true,
      "seed": 4
    },
    "glass headquarters": {
      "floors": 36,
      "crown": "flat",
      "glass": "teal",
      "setbacks": false,
      "seed": 23
    },
    "needle tower": {
      "floors": 55,
      "crown": "spire",
      "glass": "silver",
      "setbacks": true,
      "seed": 77
    }
  },
  "night": {
    "window": {
      "zone": "window",
      "color": "#ffe2a6",
      "intensity": 1,
      "describe": "A seeded share of office floors glows warm."
    },
    "lobby": {
      "zone": "lobby",
      "color": "#fff3d6",
      "intensity": 1.2,
      "describe": "The street lobby is lit."
    },
    "crown": {
      "zone": "crown",
      "color": "#fff0cc",
      "intensity": 1.3,
      "describe": "Floodlit crown edges on the stepped and spire crowns."
    },
    "beacon": {
      "zone": "beacon",
      "color": "#ff3b2f",
      "intensity": 1.6,
      "describe": "Red aviation beacons on the masts and spire."
    }
  }
}