{
  "params": {
    "height": {
      "type": "range",
      "min": 20,
      "max": 60,
      "step": 2,
      "default": 40,
      "label": "Height",
      "describe": "Height of the mast in metres, from the ground to the slewing ring under the jib."
    },
    "jibLength": {
      "type": "range",
      "min": 25,
      "max": 60,
      "step": 1,
      "default": 42,
      "label": "Jib length",
      "describe": "Reach of the jib in metres. The counter-jib and its counterweights grow with it."
    },
    "colour": {
      "type": "choice",
      "options": [
        "yellow",
        "red",
        "white",
        "orange"
      ],
      "default": "yellow",
      "label": "Colour",
      "describe": "Paint of the lattice mast and jib: yellow (classic), red, white or orange."
    },
    "top": {
      "type": "choice",
      "options": [
        "hammerhead",
        "flat-top"
      ],
      "default": "hammerhead",
      "label": "Top",
      "describe": "hammerhead (tower head peak with tie bars holding the jib) or flat-top (no peak, deeper self-supporting jib, common on city sites)."
    }
  },
  "presets": {
    "city site": {
      "top": "flat-top",
      "colour": "white",
      "height": 48,
      "jibLength": 50
    },
    "small crane": {
      "height": 24,
      "jibLength": 28,
      "colour": "orange"
    },
    "skyline giant": {
      "height": 60,
      "jibLength": 60,
      "colour": "red"
    }
  },
  "night": {
    "beacon": {
      "zone": "beacon",
      "color": "#ff2a1f",
      "intensity": 2,
      "describe": "Red aviation lights on the peak and on the tips of the jib and counter-jib."
    },
    "window": {
      "zone": "window",
      "color": "#ffd79a",
      "intensity": 0.9,
      "describe": "The operator cab is lit."
    }
  }
}