itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
94 lines (77 loc) • 4.22 kB
HTML
<html>
<head>
<title>Itowns - Globe</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="css/example.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>
<script src="js/GUI/GuiTools.js"></script>
<script src="../dist/itowns.js"></script>
<script src="js/GUI/LoadingScreen.js"></script>
<script src="../dist/debug.js"></script>
<script type="text/javascript">
// Define initial camera position
// Coordinate can be found on https://www.geoportail.gouv.fr/carte
// setting is "coordonnée geographiques en degres decimaux"
// Position near Annecy lake.
// var positionOnGlobe = { longitude: 6.2230, latitude: 45.8532, altitude: 5000 };
// Position near Gerbier mountain.
var positionOnGlobe = { longitude: 4.22, latitude: 44.844, altitude: 4000 };
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
var viewerDiv = document.getElementById('viewerDiv');
// Instanciate iTowns GlobeView*
var view = new itowns.GlobeView(viewerDiv, positionOnGlobe);
var menuGlobe = new GuiTools('menuDiv', view);
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).then(menuGlobe.addLayerGUI.bind(menuGlobe));
});
// 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).then(menuGlobe.addLayerGUI.bind(menuGlobe));
}
itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
function addMeshToScene() {
// creation of the new mesh (a cylinder)
var THREE = itowns.THREE;
var geometry = new THREE.CylinderGeometry(0, 10, 60, 8);
var material = new THREE.MeshBasicMaterial({ color: 0xff0000 });
var mesh = new THREE.Mesh(geometry, material);
// get the position on the globe, from the camera
var cameraTargetPosition = view.controls.getLookAtCoordinate();
// position of the mesh
var meshCoord = cameraTargetPosition;
meshCoord.altitude += 30;
// position and orientation of the mesh
mesh.position.copy(meshCoord.as(view.referenceCrs));
mesh.lookAt(new THREE.Vector3(0, 0, 0));
mesh.rotateX(Math.PI / 2);
// update coordinate of the mesh
mesh.updateMatrixWorld();
// add the mesh to the scene
view.scene.add(mesh);
// make the object usable from outside of the function
view.mesh = mesh;
}
// Listen for globe full initialisation event
view.addEventListener(itowns.GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, function globeInitialized() {
// eslint-disable-next-line no-console
console.info('Globe initialized');
addMeshToScene();
view.controls.setTilt(60, true);
});
</script>
</body>
</html>