カメラコントロール

const html = `
  <style>
    html,body {
        margin: 0;
        width: 350px;
        background: white;
    }
    #wrapper {
        height: 100%;
        padding: 12px;
        box-sizing: border-box;
    }
    input {
        width: 60px;
    }
  </style>

  <div id="wrapper">
    <p>lng: <input type="number" id="lng" value="139.78" />°</p>
    <p>lat: <input type="number" id="lat" value="35.68" />°</p>
    <p>height: <input type="number" id="height" value="10000" /> m</p>
    <p>heading: <input type="number" id="heading" value="0" step="0.1"/></p>
    <p>pitch: <input type="number" id="pitch" value="-1.5" step="0.1"/></p>
    <p>roll:(work for fly to) <input type="number" id="roll" value="0" step="0.1"/></p>
    <p>range:(work for look at) <input type="number" id="range" value="10000" /> m</p>
    <p>duration: <input type="number" id="duration" value="2" /> s</p>
    <p><button id="fly">Fly to</button> <button id="look">Look at</button></p>
  </div>

  <script>
    const getValues = () => ({
      lng: parseFloat(document.getElementById("lng").value||0),
      lat: parseFloat(document.getElementById("lat").value||0),
      height: parseFloat(document.getElementById("height").value||0),
      heading: parseFloat(document.getElementById("heading").value||0),
      pitch: parseFloat(document.getElementById("pitch").value||0),
      roll: parseFloat(document.getElementById("roll").value||0),
      range: parseFloat(document.getElementById("range").value||0),
      duration: parseFloat(document.getElementById("duration").value||0),
    });

    document.getElementById("fly").addEventListener("click", () => {
      parent.postMessage({ fly: getValues() }, "*");
    });

    document.getElementById("look").addEventListener("click", () => {
      parent.postMessage({ look: getValues() }, "*");
    });
  </script>
`;

reearth.ui.show(html);

reearth.on("message", msg => {
  if (msg.fly) {
      reearth.camera.flyTo({
        lat: msg.fly.lat,            // degrees
        lng: msg.fly.lng,            // degrees
        height: msg.fly.height,      // meters
        heading: msg.fly.heading,    // radians
        pitch: msg.fly.pitch,        // radians
        roll: msg.fly.roll,          // radians
      }, {
        duration: msg.fly.duration   // seconds
      });
  } else if (msg.look) {
      reearth.camera.lookAt({
        lat: msg.look.lat,          // degrees
        lng: msg.look.lng,          // degrees
        height: msg.look.height,    // meters
        heading: msg.look.heading,  // radians
        pitch: msg.look.pitch,      // radians
        range: msg.look.range,      // meters
      }, {
        duration: msg.look.duration // seconds
      });
  }
});