itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
106 lines (96 loc) • 5.21 kB
HTML
<html>
<head>
<title>Itowns - Globe/Gpx</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">
</head>
<body>
<div id="viewerDiv"></div>
<script src="../dist/itowns.js"></script>
<script src="js/GUI/LoadingScreen.js"></script>
<script type="text/javascript">
// # Loading gpx file
// Define initial camera position
var positionOnGlobe = { longitude: 0.089, latitude: 42.8989, altitude: 80000 };
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
var viewerDiv = document.getElementById('viewerDiv');
// Instanciate iTowns GlobeView*
var view = new itowns.GlobeView(viewerDiv, positionOnGlobe);
setupLoadingScreen(viewerDiv, view);
// 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);
});
// Add two elevation layers.
// These will deform iTowns globe geometry to represent terrain elevation.
function addElevationLayerFromConfig(config) {
config.source = new itowns.WMTSSource(config.source);
var layer = new itowns.ElevationLayer(config.id, config);
view.addLayer(layer);
}
itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
// update the waypoint
var distance, scale, point = new itowns.THREE.Vector3();
var size = new itowns.THREE.Vector2();
function updatePointScale(renderer, scene, camera) {
point.copy(this.geometry.boundingSphere.center).applyMatrix4(this.matrixWorld);;
distance = camera.position.distanceTo(point);
renderer.getSize(size);
scale = Math.max(2, Math.min(100, distance / size.y));
this.scale.set(scale, scale, scale);
this.updateMatrixWorld();
}
var waypointGeometry = new itowns.THREE.BoxGeometry(1, 1, 80);
var waypointMaterial = new itowns.THREE.MeshBasicMaterial({ color: 0xffffff });
// Listen for globe full initialisation event
var waypoints = [];
view.addEventListener(itowns.GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, function () {
console.info('Globe initialized');
itowns.Fetcher.xml('https://raw.githubusercontent.com/iTowns/iTowns2-sample-data/master/ULTRA2009.gpx')
.then(gpx => itowns.GpxParser.parse(gpx, {
buildExtent: true,
crsIn: 'EPSG:4326',
crsOut: view.referenceCrs,
mergeFeatures: true,
}))
.then(features => itowns.Feature2Mesh.convert({
color: new itowns.THREE.Color(0xff0000),
})(features))
.then(function (mesh) {
if (mesh) {
mesh.traverse((m) => {
if (m.type == 'Line') {
m.material.linewidth = 5;
}
if (m.type == 'Points') {
var vertices = m.feature.vertices;
for (var i = 0; i < vertices.length; i++) {
var waypoint = new itowns.THREE.Mesh(waypointGeometry, waypointMaterial);
waypoint.position.set(
vertices[i * 3],
vertices[i * 3 + 1],
vertices[i * 3 + 2]);
waypoint.lookAt(0, 0, 0);
waypoint.onBeforeRender = updatePointScale;
waypoint.updateMatrixWorld();
waypoints.push(waypoint);
}
}
});
mesh.add(...waypoints);
mesh.updateMatrixWorld();
view.scene.add(mesh);
view.controls.setTilt(45, true);
}
});
});
</script>
</body>
</html>