CARTO for deck.gl

CARTO for deck.gl

Lighting

This example shows how to apply Lighting Effects to your visualizations.

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<html>
  <head>
    <script src="https://unpkg.com/deck.gl@^8.5.0/dist.min.js"></script>
    <script src="https://unpkg.com/@deck.gl/carto@^8.5.0/dist.min.js"></script>

    <script src="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.js"></script>
    <link href="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.css" rel="stylesheet" />
  </head>

  <body style="margin: 0; padding: 0;">
    <div id="map" style="width: 100vw; height: 100vh"></div>
  </body>

  <script type="text/javascript">
    const material = {
      ambient: 0.2,
      diffuse: 0.6,
      shininess: 32,
      specularColor: [232, 232, 247]
    };

    const lightingEffect = new deck.LightingEffect({
      light1: new deck.AmbientLight({
        color: [255, 255, 255],
        intensity: 1.0
      }),
      light2: new deck.DirectionalLight({
        color: [255, 255, 255],
        intensity: 2.0,
        direction: [-1, -2, -3],
        _shadow: true
      })
    });

    lightingEffect.shadowColor = [0, 0, 0, 0.3];

    const theme = {
      buildingColor: [232, 232, 247],
      material,
      effects: [lightingEffect]
    };

    async function initialize() {
      deck.carto.setDefaultCredentials({
        username: 'public',
        apiKey: 'default_public',
      });

      const deckgl = new deck.DeckGL({
        container: 'map',
        mapStyle: deck.carto.BASEMAP.POSITRON_NOLABELS,
        initialViewState: {
          longitude: -74.012,
          latitude: 40.705,
          zoom: 14.5,
          pitch: 40,
          bearing: 0
        },
        controller: true,
        layers: [
          // This is only needed when using shadow effects
          new deck.PolygonLayer({
            id: 'ground-layer',
            data: [[[-74.0, 40.7], [-74.02, 40.7], [-74.02, 40.72], [-74.0, 40.72]]],
            getPolygon: f => f,
            stroked: false,
            getFillColor: [0, 0, 0, 0]
          }),
          new deck.carto.CartoLayer({
            id: 'buildings-layer',
            type: deck.carto.MAP_TYPES.QUERY,
            data: 'SELECT the_geom_webmercator, height FROM lower_manhattan_buildings',
            extruded: true,
            getElevation: f => f.properties.height,
            getFillColor: theme.buildingColor
          })
        ],
        effects: theme.effects
      });
    }

    initialize();    
  </script>
</html>