itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
110 lines (94 loc) • 4.48 kB
HTML
<html>
<head>
<title>Itowns - Planar + vector-tiles</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="css/example.css">
<link rel="stylesheet" type="text/css" href="css/LoadingScreen.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.min.js"></script>
</head>
<body>
<div id="viewerDiv"></div>
<div id="debug" width="400" height="300"></div>
<script src="js/GUI/GuiTools.js"></script>
<script src="../dist/itowns.js"></script>
<script src="../dist/debug.js"></script>
<script src="js/GUI/LoadingScreen.js"></script>
<script src="js/plugins/FeatureToolTip.js"></script>
<script>
// # Planar view with one single layer of vector tile
// Define geographic extent: CRS, min/max X, min/max Y
var extent = new itowns.Extent(
'EPSG:3857',
-20037508.342789244, 20037508.342789244,
-20037508.342789255, 20037508.342789244);
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
var viewerDiv = document.getElementById('viewerDiv');
// Instanciate PlanarView
var view = new itowns.PlanarView(viewerDiv, extent, { maxSubdivisionLevel: 20 });
var menuGlobe = new GuiTools('menuDiv', view, 300);
// eslint-disable-next-line no-new
new itowns.PlanarControls(view, {
// We do not want the user to zoom out too much
maxAltitude: 40000000,
// We want to keep the rotation disabled, to only have a view from the top
enableRotation: false,
// Faster zoom in/out speed
zoomInFactor: 0.5,
zoomOutFactor: 0.5,
// Don't zoom too much on smart zoom
smartZoomHeightMax: 100000,
});
// Turn in the right angle
itowns.CameraUtils.transformCameraToLookAtTarget(view, view.camera.camera3D, { tilt: 90 });
setupLoadingScreen(viewerDiv, view);
FeatureToolTip.init(viewerDiv, view);
var count = 0;
// Add a vector tile layer
function isValidData(data, extentDestination) {
// re-use the same vector tiles by interval 4
// var z = extentDestination.zoom - 2;
return false;
}
var mvtSource = new itowns.VectorTilesSource({
style: 'https://raw.githubusercontent.com/Oslandia/postile-openmaptiles/master/style.json',
// eslint-disable-next-line no-template-curly-in-string
url: 'https://osm.oslandia.io/data/v3/${z}/${x}/${y}.pbf',
attribution: {
name: 'OpenStreetMap',
url: 'http://www.openstreetmap.org/',
},
filter: function (layer) { return ['fill', 'line'].includes(layer.type) },
zoom: {
min: 2,
max: 16,
},
});
var mvtLayer = new itowns.ColorLayer('MVT', {
isValidData: isValidData,
source: mvtSource,
});
view.addLayer(mvtLayer).then(function _(layer) {
FeatureToolTip.addLayer(layer, {
filterGeometries: function _(geometries) {
var uniqueClasses = [];
return geometries.filter(function _(g) {
if (g.geometry.properties.class && !uniqueClasses.includes(g.geometry.properties.class)) {
uniqueClasses.push(g.geometry.properties.class);
return true;
}
});
},
filterAllProperties: false,
format: function _(n, p) {
if (p !== undefined && n == 'class') return p;
}
});
return layer;
}).then(menuGlobe.addLayerGUI.bind(menuGlobe));
// Request redraw
view.notifyChange(true);
debug.createTileDebugUI(menuGlobe.gui, view);
</script>
</body>
</html>