itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
91 lines (69 loc) • 3.22 kB
HTML
<html>
<head>
<title>Itowns - FileSource - Handle fetching step</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" class="viewer"></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 type="text/javascript">
/* global itowns, setupLoadingScreen, GuiTools, ToolTip */
// ---------- CREATE A GlobeView : ----------
// Define camera initial position
const placement = {
coord: new itowns.Coordinates('EPSG:4326', 3.05, 48.95),
range: 70000,
};
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
const viewerDiv = document.getElementById('viewerDiv');
// Instantiate iTowns 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 is defined in a json file but it could be defined as a plain js
// object. See Layer* for more info.
itowns.Fetcher.json('./layers/JSONLayers/Ortho.json').then(function _(config) {
config.source = new itowns.WMTSSource(config.source);
var layer = new itowns.ColorLayer('Ortho', config);
view.addLayer(layer).then(debugMenu.addLayerGUI.bind(debugMenu));
});
// ---------- DEFINE DATA SOURCE FROM FETCHED DATA : ----------
// Handle fetching step.
// Should you implement a custom fetcher, it would need to be called here.
itowns.Fetcher.json(
'https://raw.githubusercontent.com/iTowns/iTowns2-sample-data/master/lyon-roads.geojson',
).then((fetched) => {
// Then, create a FileSource, passing it the data just fetched. We also need to specify the `format` or the
// `parser` parameter so that iTowns knows which parser it can use.
const sourceFromFetchedData = new itowns.FileSource({
fetchedData: fetched,
crs: 'EPSG:4326',
format: 'application/json',
});
view.addLayer(new itowns.ColorLayer('Roads', {
source: sourceFromFetchedData,
style: {
stroke: { color: 'yellow' },
},
})).then(debugMenu.addLayerGUI.bind(debugMenu));
});
view.addEventListener(itowns.GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, function () {
// Organize the order with which layers are superposing.
itowns.ColorLayersOrdering.moveLayerToIndex(view, 'Ortho', 0);
// Move the camera to visualize all data.
view.controls.lookAtCoordinate(view.getLayerById('Roads').source.extent, false);
});
</script>
</body>
</html>