itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
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HTML
<html>
<head>
<title>Itowns - Globe + WFS</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>
<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>
<div id="description">
<p><b>Building Information</b></p>
<ul id="info">
</ul>
</div>
<script type="text/javascript">
// Define projection that we will use (taken from https://epsg.io/3946, Proj4js section)
itowns.proj4.defs('EPSG:3946', '+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
// # Simple Globe viewer
// Define initial camera position
var positionOnGlobe = { longitude: 4.818, latitude: 45.7354, altitude: 3000 };
var meshes = [];
var linesBus = [];
var scaler;
// `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).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);
var color = new itowns.THREE.Color();
var tile;
function altitudeLine(properties, contour) {
var result;
var z = 0;
if (contour) {
result = itowns.DEMUtils.getElevationValueAt(view.tileLayer, contour, 0, tile);
if (!result) {
result = itowns.DEMUtils.getElevationValueAt(view.tileLayer, contour, 0);
}
tile = [result.tile];
if (result) {
z = result.z;
}
return z + 5;
}
}
function colorLine(properties) {
if (properties) {
var rgb = properties.couleur.split(' ');
return color.setRGB(rgb[0] / 255, rgb[1] / 255, rgb[2] / 255);
}
}
function acceptFeatureBus(properties) {
var line = properties.ligne + properties.sens;
if (linesBus.indexOf(line) === -1) {
linesBus.push(line);
return true;
}
return false;
}
var lyonTclBusSource = new itowns.WFSSource({
protocol: 'wfs',
url: 'https://download.data.grandlyon.com/wfs/rdata?',
version: '2.0.0',
typeName: 'tcl_sytral.tcllignebus',
projection: 'EPSG:3946',
extent: {
west: 1822174.60,
east: 1868247.07,
south: 5138876.75,
north: 5205890.19,
},
zoom: { min: 9, max: 9 },
format: 'geojson',
});
var lyonTclBusLayer = new itowns.GeometryLayer('WFS Bus lines', new itowns.THREE.Group(), {
name: 'lyon_tcl_bus',
update: itowns.FeatureProcessing.update,
convert: itowns.Feature2Mesh.convert({
color: colorLine,
altitude: altitudeLine }),
linewidth: 5,
filter: acceptFeatureBus,
source: lyonTclBusSource
});
view.addLayer(lyonTclBusLayer);
function colorBuildings(properties) {
if (properties.id.indexOf('bati_remarquable') === 0) {
return color.set(0x5555ff);
} else if (properties.id.indexOf('bati_industriel') === 0) {
return color.set(0xff5555);
}
return color.set(0xeeeeee);
}
function altitudeBuildings(properties) {
return properties.z_min - properties.hauteur;
}
function extrudeBuildings(properties) {
return properties.hauteur;
}
function acceptFeature(properties) {
return !!properties.hauteur;
}
scaler = function update(/* dt */) {
var i;
var mesh;
if (meshes.length) {
view.notifyChange(view.camera.camera3D, true);
}
for (i = 0; i < meshes.length; i++) {
mesh = meshes[i];
if (mesh) {
mesh.scale.z = Math.min(
1.0, mesh.scale.z + 0.1);
mesh.updateMatrixWorld(true);
}
}
meshes = meshes.filter(function filter(m) { return m.scale.z < 1; });
};
view.addFrameRequester(itowns.MAIN_LOOP_EVENTS.BEFORE_RENDER, scaler);
var wfsBuildingSource = new itowns.WFSSource({
url: 'https://wxs.ign.fr/3ht7xcw6f7nciopo16etuqp2/geoportail/wfs?',
version: '2.0.0',
typeName: 'BDTOPO_BDD_WLD_WGS84G:bati_remarquable,BDTOPO_BDD_WLD_WGS84G:bati_indifferencie,BDTOPO_BDD_WLD_WGS84G:bati_industriel',
projection: 'EPSG:4326',
ipr: 'IGN',
format: 'application/json',
zoom: { min: 14, max: 14 },
extent: {
west: 4.568,
east: 5.18,
south: 45.437,
north: 46.03,
},
});
var wfsBuildingLayer = new itowns.GeometryLayer('WFS Building', new itowns.THREE.Group(), {
update: itowns.FeatureProcessing.update,
convert: itowns.Feature2Mesh.convert({
color: colorBuildings,
batchId: function (property, featureId) { return featureId; },
altitude: altitudeBuildings,
extrude: extrudeBuildings }),
onMeshCreated: function scaleZ(mesh) {
mesh.scale.z = 0.01;
meshes.push(mesh);
},
filter: acceptFeature,
overrideAltitudeInToZero: true,
source: wfsBuildingSource
});
view.addLayer(wfsBuildingLayer);
var menuGlobe = new GuiTools('menuDiv', view);
// Listen for globe full initialisation event
view.addEventListener(itowns.GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, function () {
// eslint-disable-next-line no-console
console.info('Globe initialized');
view.controls.setTilt(45);
});
debug.createTileDebugUI(menuGlobe.gui, view);
function picking(event) {
if(view.controls.isPaused()) {
var htmlInfo = document.getElementById('info');
var intersects = view.pickObjectsAt(event, 3, 'WFS Building');
var properties;
var info;
var batchId;
htmlInfo.innerHTML = ' ';
if (intersects.length) {
batchId = intersects[0].object.geometry.attributes.batchId.array[intersects[0].face.a];
properties = intersects[0].object.feature.geometry[batchId].properties;
Object.keys(properties).map(function (objectKey) {
var value = properties[objectKey];
var key = objectKey.toString();
if (key[0] !== '_' && key !== 'geometry_name') {
info = value.toString();
htmlInfo.innerHTML +='<li><b>' + key + ': </b>' + info + '</li>';
}
});
}
}
}
for (var layer of view.getLayers()) {
if (layer.id === 'WFS Bus lines') {
layer.whenReady.then( function _(layer) {
var gui = debug.GeometryDebug.createGeometryDebugUI(menuGlobe.gui, view, layer);
debug.GeometryDebug.addMaterialLineWidth(gui, view, layer, 1, 10);
});
}
if (layer.id === 'WFS Building') {
layer.whenReady.then( function _(layer) {
var gui = debug.GeometryDebug.createGeometryDebugUI(menuGlobe.gui, view, layer);
debug.GeometryDebug.addWireFrameCheckbox(gui, view, layer);
window.addEventListener('mousemove', picking, false);
});
}
if (layer.id === 'WFS Route points') {
layer.whenReady.then( function _(layer) {
var gui = debug.GeometryDebug.createGeometryDebugUI(menuGlobe.gui, view, layer);
debug.GeometryDebug.addMaterialSize(gui, view, layer, 1, 200);
});
}
}
</script>
</body>
</html>