{
  "params": {
    "style": {
      "type": "choice",
      "options": [
        "lattice",
        "monopole",
        "retrofit"
      ],
      "default": "retrofit",
      "label": "Style",
      "describe": "lattice (classic galvanised steel lattice tower), monopole (a single tapered steel tube with box arms, newer lines), retrofit (dark lattice festooned with loose cable bundles, a junction box with a status light, a neon warning band and glowing cyan insulators, the cyberpunk look)."
    },
    "height": {
      "type": "range",
      "min": 18,
      "max": 40,
      "step": 1,
      "default": 26,
      "label": "Height",
      "describe": "Height of the tower body in metres, 18 to 40; the earth-wire peak adds 2 m. The arms and the base widen with it."
    },
    "span": {
      "type": "range",
      "min": 20,
      "max": 60,
      "step": 2,
      "default": 30,
      "label": "Span",
      "describe": "Distance to the next pylon in metres, 20 to 60. Cables run half a span to each side along Z and sag about 4% of the span; place copies this far apart along Z."
    },
    "cables": {
      "type": "toggle",
      "default": true,
      "label": "Cables",
      "describe": "Draw the conductors and the earth wire out to half a span on both sides. Off gives the bare tower with its insulators."
    }
  },
  "presets": {
    "city feeder": {
      "style": "retrofit",
      "height": 22,
      "span": 24,
      "cables": true
    },
    "country line": {
      "style": "lattice",
      "height": 32,
      "span": 50,
      "cables": true
    },
    "modern monopole": {
      "style": "monopole",
      "height": 24,
      "span": 36,
      "cables": true
    }
  },
  "night": {
    "beacon": {
      "zone": "beacon",
      "color": "#ff2f2f",
      "intensity": 2,
      "describe": "Red aviation light on the peak."
    },
    "insulator": {
      "zone": "insulator",
      "color": "#3df0ff",
      "intensity": 1.4,
      "describe": "Retrofit insulators glow cyan."
    },
    "neon": {
      "zone": "neon",
      "intensity": 1.6,
      "describe": "The warning band and the junction box status light on the retrofit tower."
    }
  }
}