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Tangram simple demo

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simple-demo

The simplest possible Tangram setup.

Forked from https://github.com/tangrams/simple-demo

tangram-demo screenshot

index.html

<!doctype html>
<!--
    Tangram: real-time WebGL rendering for OpenStreetMap

    //github.com/tangrams/tangram
    //mapzen.com
-->
<html lang="en-us">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Simple demo – Tangram</title>
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.1/dist/leaflet.css" />

    <style>
        body {
            margin: 0px;
            border: 0px;
            padding: 0px;
        }

        #map {
            height: 100%;
            width: 100%;
            position: absolute;
        }

    </style>
  </head>

  <body>
    <div id="map"></div>

    <!-- leaflet -->
    <script src="https://unpkg.com/leaflet@1.0.1/dist/leaflet.js"></script>

    <!-- Main tangram library -->
    <script src="https://mapzen.com/tangram/0.10/tangram.min.js"></script>

    <!-- Demo setup -->
    <script>
      
        var map = L.map('map');

        var layer = Tangram.leafletLayer({
            scene: 'scene.yaml',
            attribution: '<a href="https://mapzen.com/tangram" target="_blank">Tangram</a> | &copy; OSM contributors | <a href="https://mapzen.com/" target="_blank">Mapzen</a>'
        });

        layer.addTo(map);

        map.setView([40.70531887544228, -74.00976419448853], 15);

    </script>

  </body>
</html>

LICENSE

The MIT License (MIT)

Copyright (c) 2014 Mapzen

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

scene.yaml

cameras:
    camera1:
        type: perspective

lights:
    light1:
        type: directional
        direction: [0, 1, -.5]
        diffuse: .3
        ambient: 1

sources:
    osm:
        type: TopoJSON
        url: https://tile.mapzen.com/mapzen/vector/v1/all/{z}/{x}/{y}.topojson?api_key=mapzen-QF1osLn
        max_zoom: 16

layers:
    earth:
        data: { source: osm }
        draw:
            polygons:
                order: function() { return feature.sort_rank; }
                color: '#ddeeee'

    landuse:
        data: { source: osm }
        draw:
            polygons:
                order: function() { return feature.sort_rank; }
                color: '#aaffaa'

    water:
        data: { source: osm }
        draw:
            polygons:
                order: function() { return feature.sort_rank; }
                color: '#88bbee'

    roads:
        data: { source: osm }
        filter:
            not: { kind: [path, rail, ferry] }
        draw:
            lines:
                order: function() { return feature.sort_rank; }
                color: gray
                width: 8
                cap: round
        highway:
            filter:
                kind: highway
            draw:
                lines:
                    order: function() { return feature.sort_rank; }
                    color: '#cc6666'
                    width: 12
                    outline:
                        color: grey
                        width: 1.5
        minor_road:
            filter:
                kind: minor_road
            draw:
                lines:
                    order: function() { return feature.sort_rank; }
                    color: lightgrey
                    width: 5

    buildings:
        data: { source: osm }
        draw:
            polygons:
                order: function() { return feature.sort_rank; }
                color: |
                    function () {
                        var h = feature.height || 20;
                        h = Math.min((h + 50)/ 255, .8); // max brightness: .8
                        h = Math.max(h, .4); // min brightness: .4
                        return [h, h, h];
                    }
        3d-buildings:
            filter: { $zoom: { min: 15 } }
            draw:
                polygons:
                    extrude: function () { return feature.height > 20 || $zoom >= 16; }