itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
177 lines (146 loc) • 7.6 kB
HTML
<html>
<head>
<title>Itowns - Globe + vector-tiles 3d</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="css/example.css">
<link rel="stylesheet" type="text/css" href="css/LoadingScreen.css">
<link rel="stylesheet" type="text/css" href="css/widgets.css">
<link rel="stylesheet" type="text/css" href="css/mapbox.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.min.js"></script>
</head>
<body>
<div id="viewerDiv"></div>
<!-- Import iTowns source code -->
<script src="../dist/itowns.js"></script>
<script src="../dist/debug.js"></script>
<!-- Import iTowns LoadingScreen and GuiTools plugins -->
<script src="js/GUI/GuiTools.js"></script>
<script src="js/GUI/LoadingScreen.js"></script>
<div id="description">
<p><b>Building Information</b></p>
<ul id="info">
</ul>
</div>
<div id='map'>
<a href="http://mapbox.com/about/maps" class='mapbox-logo' target="_blank">Mapbox</a>
<div class="mapbox-attribution-container">
<a href="https://www.mapbox.com/about/maps/">© Mapbox | </a>
<a href="http://www.openstreetmap.org/copyright">© OpenStreetMap | </a>
<a href="https://www.mapbox.com/map-feedback/" target="_blank"><strong>Improve this map</strong></a>
</div>
</div>
<script type="text/javascript">
// ---------- CREATE A GlobeView FOR SUPPORTING DATA VISUALIZATION : ----------
// Define camera initial position
const placement = {
coord: new itowns.Coordinates('EPSG:4326', 5.223762, 46.192268),
range: 5000,
tilt: 45,
};
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
const viewerDiv = document.getElementById('viewerDiv');
// Create a GlobeView
const view = new itowns.GlobeView(viewerDiv, placement);
// Define poles texture
view.tileLayer.noTextureColor = new itowns.THREE.Color(0x95c1e1);
// Disable atmosphere lighting
view.getLayerById('atmosphere').visible = false;
view.getLayerById('atmosphere').fog.enable = false;
// Setup loading screen and debug menu
setupLoadingScreen(viewerDiv, view);
const debugMenu = new GuiTools('menuDiv', view, 300);
// ---------- DISPLAY CONTEXTUAL DATA : ----------
// Add one imagery layer to the scene. This layer's properties are
// defined in a json file, but it could be defined as a plain js
// object. See `Layer` documentation for more info.
const ortho = itowns.Fetcher.json('./layers/JSONLayers/Ortho.json')
.then(function _(config) {
config.source = new itowns.WMTSSource(config.source);
var layer = new itowns.ColorLayer('Ortho', config);
return view.addLayer(layer);
});
// Add an elevation layer, whose properties are defined in a json
// file.
function addElevationLayerFromConfig(config) {
config.source = new itowns.WMTSSource(config.source);
view.addLayer(new itowns.ElevationLayer(config.id, config))
.then(debugMenu.addLayerGUI.bind(debugMenu));
}
itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json')
.then(addElevationLayerFromConfig);
// ---------- DISPLAY VECTOR TILED BUILDING DATA AS 3D MESHES : ----------
// Define the source of the building data. We use the mapbox Streets v8 tileset and Style JSON
// https://docs.mapbox.com/data/tilesets/reference/mapbox-streets-v8/
const buildingsSource = new itowns.VectorTilesSource({
style: 'mapbox://styles/mapbox/streets-v8',
accessToken: 'pk.eyJ1IjoiZnRvcm9tYW5vZmYiLCJhIjoiY2xrc2Zpa2o3MDQxNTNxcG5sczJyaTlncyJ9.5KFKdMLIiy-b_fAjSVhjCQ',
filter: (layer) => {
return layer.id === 'building';
},
});
// Get buildings ground elevation
function altitudeBuildings(properties, ctx) {
if (ctx.coordinates) {
return itowns.DEMUtils.getElevationValueAt(view.tileLayer, ctx.coordinates);
}
}
// Create a FeatureGeometryLayer to support building data.
var buildingsLayer = new itowns.FeatureGeometryLayer('VTBuilding',{
batchId: function (property, featureId) { return featureId; },
source: buildingsSource,
zoom: {
min: 15,
},
style: {
fill: {
// the building with type = roof doesn't have same properties as the others
base_altitude: (p, ctx) => {
return (altitudeBuildings(p, ctx) || 0) + (p.min_height || 0);
},
extrusion_height: (p) => {
return p.height || 0;
},
},
}
});
// Add the FeatureGeometryLayer to the scene and to the debug menu.
view.addLayer(buildingsLayer);
// ---------- DEBUG TOOLS : ----------
debug.createTileDebugUI(debugMenu.gui, view);
function picking(event) {
if(view.controls.isPaused) {
var htmlInfo = document.getElementById('info');
var intersects = view.pickObjectsAt(event, 3, 'VTBuilding');
var properties;
var info;
var batchId;
htmlInfo.innerHTML = ' ';
if (intersects.length) {
batchId = intersects[0].object.geometry.attributes.batchId.array[intersects[0].face.a];
properties = intersects[0].object.feature.geometries[batchId].properties;
Object.keys(properties).map(function (objectKey) {
var value = properties[objectKey];
if (value) {
var key = objectKey.toString();
if (key[0] !== '_' && key !== 'geometry_name') {
info = value.toString();
htmlInfo.innerHTML +='<li><b>' + key + ': </b>' + info + '</li>';
}
}
});
}
}
}
for (var layer of view.getLayers()) {
if (layer.id === 'VTBuilding') {
layer.whenReady.then( function _(layer) {
var gui = debug.GeometryDebug.createGeometryDebugUI(debugMenu.gui, view, layer);
debug.GeometryDebug.addWireFrameCheckbox(gui, view, layer);
window.addEventListener('mousemove', picking, false);
});
}
}
</script>
</body>
</html>