itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
125 lines (90 loc) • 5.12 kB
HTML
<html>
<head>
<title>Itowns - Minimap widget</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">
<!-- Import stylesheet for itowns Widgets plugin. This stylesheet is included in the bundles if you downloaded
them, or it can be found in `node_modules/itowns/examples/css` if you installed iTowns with npm. Otherwise, it
can be found here : https://raw.githubusercontent.com/iTowns/itowns/master/examples/css/widgets.css -->
<link rel="stylesheet" type="text/css" href="css/widgets.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.min.js"></script>
</head>
<body>
<!-- Add a description -->
<div id="description">
Double click on the minimap to travel to the cursor location.
</div>
<!-- Create a container for itowns viewer -->
<div id="viewerDiv"></div>
<!-- Import iTowns source code -->
<script src="../dist/itowns.js"></script>
<script src="../dist/debug.js"></script>
<!-- Import iTowns Widgets plugin -->
<script src="../dist/itowns_widgets.js"></script>
<!-- Import iTowns LoadingScreen and GuiTools plugins -->
<script src="js/GUI/LoadingScreen.js"></script>
<script src="js/GUI/GuiTools.js"></script>
<script type="text/javascript">
// ---------- CREATE A GlobeView FOR SUPPORTING DATA VISUALIZATION : ----------
// Define camera initial position
const placement = {
coord: new itowns.Coordinates('EPSG:4326', 2.351323, 48.856712),
range: 6000,
tilt: 50,
}
// `viewerDiv` contains iTowns' rendering area (`<canvas>`)
const viewerDiv = document.getElementById('viewerDiv');
// Create a GlobeView
const view = new itowns.GlobeView(viewerDiv, placement);
// Setup loading screen and debug menu
setupLoadingScreen(viewerDiv, view);
const debugMenu = new GuiTools('menuDiv', view);
// ---------- 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.
itowns.Fetcher.json('layers/JSONLayers/Ortho.json').then((config) => {
config.source = new itowns.WMTSSource(config.source);
view.addLayer(
new itowns.ColorLayer(config.id, config),
).then(debugMenu.addLayerGUI.bind(debugMenu));
});
// Add two elevation layers, each with a different level of detail. Here again, each layer's 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);
itowns.Fetcher.json('layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
// ---------- ADD MINIMAP WIDGET : ----------
// Create a ColorLayer that shall be displayed on the minimap.
const minimapColorLayer = new itowns.ColorLayer('minimap', {
source: new itowns.VectorTilesSource({
style: "https://data.geopf.fr/annexes/ressources/vectorTiles/styles/PLAN.IGN/standard.json",
// We don't display mountains and plot related data to ease visualisation
filter: (layer) => !layer['source-layer'].includes('oro_')
&& !layer['source-layer'].includes('parcellaire'),
}),
addLabelLayer: { performance: true },
});
// Create a minimap.
const minimap = new itowns_widgets.Minimap(view, minimapColorLayer, {
cursor: '+',
size: 200,
});
// ---------- ADD INTERACTION WITH MINIMAP : ----------
// When double-clicking the minimap, travel to the cursor location.
const cursorCoordinates = new itowns.Coordinates(minimap.view.referenceCrs);
minimap.domElement.addEventListener('dblclick', (event) => {
minimap.view.pickTerrainCoordinates(event, cursorCoordinates);
view.controls.lookAtCoordinate({ coord: cursorCoordinates });
});
// ---------- DEBUG TOOLS : ----------
debug.createTileDebugUI(debugMenu.gui, view);
</script>
</body>
</html>