Add a water polygon

0.10.1

Add a water polygon with Entity API

add_water_polygon.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Add a water polygon</title>
  <meta property="og:description" content="Add a water polygon with Entity API" />
  <meta name="mapray-version" content="0.10.1">
  <meta name="mapray-api-status" content="experimental">
  <script src="./v0.10.6/mapray.min.js"></script>
  <script src="./v0.10.6/maprayui.min.js"></script>
  <link rel="stylesheet" href="./v0.10.6/mapray.css">
  <style>
    body {margin: 0; padding: 0;}
    html, body, div#mapray-container { height: 100%; }
    .caption {
        position: absolute; top: 0; left: 0; margin: 10px;
        font: 13px/1.5 sans-serif; background: rgba(255,255,255,0.85);
        border-radius: 3px; padding: 8px 10px; width: 16em;
    }
    .caption input { width: 100%; }
  </style>
</head>

<body>
    <div id="mapray-container"></div>
    <div class="caption">
        <label for="time">2026-06-21 <span id="time_value">18:40</span> JST</label>
        <input type="range" id="time" min="960" max="1170" step="5" value="1120">
    </div>
</body>
</html>

<script>
 const cloudApi = new mapray.cloud.CloudApiV2({
        tokenType: mapray.cloud.CloudApi.TokenType.ACCESS_TOKEN,
        token: "<YOUR_MAPRAY_ACCESS_TOKEN>"
    });

    // Create viewer
    const uiviewer = new maprayui.StandardUIViewer( "mapray-container", { 
        dem_provider: new mapray.StandardDemProvider( cloudApi.getDefaultDemAsResource() ),
        sun_visualizer: new mapray.SunVisualizer( 32 ),
        atmosphere: new mapray.Atmosphere()
    } );

 // Setup camera position
 uiviewer.setCameraPosition( {
     longitude: 139.025780,
     latitude: 35.193548,
     height: 773.081850,
 } );

 uiviewer.setLookAtPosition( {
     longitude: 139.020532,
     latitude: 35.197264,
     height: 724.5,
 } );

 // Create WaterPolygonEntityVisualizer
 const waterPolygonEntityVisualizer = new mapray.WaterPolygonEntityVisualizer();

 // Create and Add WaterPolygonEntity
 const waterPolygonEntity = new mapray.WaterPolygonEntity( uiviewer.viewer.scene );
 waterPolygonEntity.altitude_mode = mapray.AltitudeMode.ABSOLUTE;
 waterPolygonEntity.setVisualizer( waterPolygonEntityVisualizer );
 waterPolygonEntity.addOuterBoundary( [
     138.97781691339844, 35.235532645650316, 728.0,
     138.9840645149059, 35.23800239288863, 728.0,
     138.98526768243218, 35.23879309100957, 728.0,
     138.98667262862796, 35.23935825011423, 728.0,
     138.98773803854797, 35.23905522498528, 728.0,
     138.9902448141511, 35.23825038096923, 728.0,
     138.991714137299, 35.238197231358676, 728.0,
     138.99319493481565, 35.237663433629244, 728.0,
     138.9953599309971, 35.2373858941149, 728.0,
     138.9967977385083, 35.2369396897476, 728.0,
     138.99844257559621, 35.23643495614961, 728.0,
     139.00124460646938, 35.23532763563798, 728.0,
     139.00373780211888, 35.23419111209799, 728.0,
     139.0137643012769, 35.23096761486226, 728.0,
     139.03687374637494, 35.21098346424906, 728.0,
     139.03692114157428, 35.19668248606167, 728.0,
     139.0313799008832, 35.18467463558891, 728.0,
     139.0189806978822, 35.17886221869787, 728.0,
     139.00267571465494, 35.18200236548421, 728.0,
     138.99251961020272, 35.19223120279554, 728.0,
     138.9847557375266, 35.208946027386745, 728.0,
     138.97804529082168, 35.225931671613914, 728.0,
 ] );
 uiviewer.viewer.scene.addEntity( waterPolygonEntity );

 /**
  * Sun direction in GOCS (ECEF) for a UTC time.
  * Meeus ch.25 low-precision solar position + GMST rotation (error < 0.02 deg).
  */
 function sunDirectionGocs( date ) {
     const DEG = Math.PI / 180;
     const jd = date.getTime() / 86400000 + 2440587.5;
     const t  = ( jd - 2451545.0 ) / 36525.0;
     const L0 = 280.46646 + 36000.76983 * t;
     const M  = ( 357.52911 + 35999.05029 * t ) * DEG;
     const C  = 1.914602 * Math.sin( M ) + 0.019993 * Math.sin( 2 * M ) + 0.000289 * Math.sin( 3 * M );
     const lambda = ( L0 + C ) * DEG;
     const eps = ( 23.4392911 - 0.0130042 * t ) * DEG;
     const ra  = Math.atan2( Math.cos( eps ) * Math.sin( lambda ), Math.cos( lambda ) );
     const dec = Math.asin( Math.sin( eps ) * Math.sin( lambda ) );
     let gmst = ( 280.46061837 + 360.98564736629 * ( jd - 2451545.0 ) ) % 360;
     if ( gmst < 0 ) gmst += 360;
     const lon = ra - gmst * DEG;
     return [ Math.cos( dec ) * Math.cos( lon ), Math.cos( dec ) * Math.sin( lon ), Math.sin( dec ) ];
 }

 // The view faces a bearing of 311 deg, towards Mt. Fuji. Around the summer
 // solstice the sun sets at about 298 deg near 19:00, just left of the view centre.
 const time = document.getElementById( "time" );
 const updateSun = function () {
     const minutes = Number( time.value );
     const hh = String( Math.floor( minutes / 60 ) ).padStart( 2, "0" );
     const mm = String( minutes % 60 ).padStart( 2, "0" );
     document.getElementById( "time_value" ).textContent = hh + ":" + mm;
     uiviewer.viewer.sun.setSunDirection( sunDirectionGocs( new Date( "2026-06-21T" + hh + ":" + mm + ":00+09:00" ) ) );
 };
 time.addEventListener( "input", updateSun );
 updateSun();
</script>

Info

このサンプルコードは、<YOUR_MAPRAY_ACCESS_TOKEN>を、あなたのMapray CloudのアカウントのOrganization Tokenに置き換えるまで、期待通りに動作しません。