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                <script type="text/javascript" src=""></script>

<script type="text/javascript" src=""></script>



                body {
  margin: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;


                const { DeckGL, GeoJsonLayer, ArcLayer } = deck;

const air_ports = ''

// 空港の GeoJSON を取得して Deck.GL のレイヤーを設置
fetch(air_ports).then(res => {
  return res.json()
}).then(data => {
  const layers = [
    new GeoJsonLayer({
      id: 'airports',
      data: data,
      filled: true,
      pointRadiusMinPixels: 2,
      pointRadiusScale: 1000,
      getRadius: () => 5,
      getFillColor: [255, 255, 100, 90],
      pickable: true,
      autoHighlight: true,

  for (let i = 0; i < data.features.length; i++) {
    const airport = data.features[i]
    if ('cf04_00030' !== {
      continue // 羽田以外は除外
    const arc = new ArcLayer({
      id: `arcs-${i}`,
      data: air_ports,
      greatCircle: true,
      wrapLongitude: true,
      dataTransform: d => {
        return d.features
      getSourcePosition: () => airport.geometry.coordinates,
      getTargetPosition: f => f.geometry.coordinates,
      getSourceColor: [200, 0, 80],
      getTargetColor: [150, 200, 255],
      getWidth: 1,


  new DeckGL({
    mapStyle: 'geolonia/midnight',
    initialViewState: {
      latitude: 37.092,
      longitude: 138.219,
      zoom: 6,
      bearing: 0,
      pitch: 60,
    controller: true,
    layers: layers

// コンテキストメニューを無効化
document.body.addEventListener('contextmenu', e => {