Display a WFS layer on a Map.
import { getUid } from 'ol';
import { Stroke, Style } from 'ol/style.js';
import { GeoJSON } from 'ol/format.js';
import TileWMS from 'ol/source/TileWMS.js';
import { MathUtils, Vector3 } from 'three';
import { MapControls } from 'three/examples/jsm/controls/MapControls.js';
import { CSS2DObject } from 'three/examples/jsm/renderers/CSS2DRenderer.js';
import Extent from '@giro3d/giro3d/core/geographic/Extent.js';
import Instance from '@giro3d/giro3d/core/Instance.js';
import Map from '@giro3d/giro3d/entities/Map.js';
import ColorLayer from '@giro3d/giro3d/core/layer/ColorLayer.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';
import TiledImageSource from '@giro3d/giro3d/sources/TiledImageSource.js';
import VectorSource from '@giro3d/giro3d/sources/VectorSource.js';
import Coordinates from '@giro3d/giro3d/core/geographic/Coordinates';
// Define projection that we will use (taken from https://epsg.io/3946, Proj4js section)
Instance.registerCRS(
'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',
);
// Define geographic extent: CRS, min/max X, min/max Y
const extent = new Extent('EPSG:3946', 1837816.94334, 1847692.32501, 5170036.4587, 5178412.82698);
// `viewerDiv` will contain Giro3D' rendering area (the canvas element)
const viewerDiv = document.getElementById('viewerDiv');
// Instantiate Giro3D
const instance = new Instance(viewerDiv, {
crs: extent.crs(),
renderer: {
clearColor: 0x0a3b59,
},
});
const map = new Map('map', { extent });
instance.add(map);
// Adds a WMS imagery layer
const colorSource = new TiledImageSource({
source: new TileWMS({
url: 'https://data.geopf.fr/wms-r',
projection: 'EPSG:3946',
params: {
LAYERS: ['HR.ORTHOIMAGERY.ORTHOPHOTOS'],
FORMAT: 'image/jpeg',
},
}),
});
const colorLayer = new ColorLayer({
name: 'orthoimagery',
extent,
source: colorSource,
});
map.addLayer(colorLayer);
const featureColors = new window.Map();
function getColor(id) {
if (featureColors.has(id)) {
return featureColors.get(id);
}
const hue = MathUtils.randFloat(30, 340);
const color = `hsl(${hue}, 70%, 50%)`;
featureColors.set(id, color);
return color;
}
const style = feature => {
const id = getUid(feature);
const highlight = feature.get('highlight');
const width = highlight ? 10 : 6;
const color = getColor(id);
return [
new Style({
zIndex: highlight ? 10 : 0,
stroke: new Stroke({
color: 'white',
width,
}),
}),
new Style({
zIndex: highlight ? 10 : 0,
stroke: new Stroke({
color,
width: width - 2,
}),
}),
];
};
// Adds a WFS imagery layer
const wfsSource = new VectorSource({
format: new GeoJSON(),
dataProjection: 'EPSG:3946',
data:
'https://download.data.grandlyon.com/wfs/rdata' +
'?SERVICE=WFS' +
'&VERSION=2.0.0' +
'&request=GetFeature' +
'&typename=tcl_sytral.tcllignebus_2_0_0' +
'&outputFormat=application/json;%20subtype=geojson' +
'&SRSNAME=EPSG:3946' +
'&startIndex=0',
style,
});
const wfsLayer = new ColorLayer({
name: 'lyon_tcl_bus',
extent,
source: wfsSource,
});
map.addLayer(wfsLayer);
// Creates controls
const controls = new MapControls(instance.camera.camera3D, instance.domElement);
instance.camera.camera3D.position.set(1839739, 5171618, 910);
controls.target = new Vector3(1840839, 5172718, 0);
controls.saveState();
controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.maxPolarAngle = Math.PI / 2.3;
instance.useTHREEControls(controls);
const labelElement = document.createElement('div');
labelElement.classList = 'badge rounded-pill text-bg-light';
labelElement.style.marginTop = '2rem';
const lineName = document.createElement('span');
lineName.style.marginLeft = '0.5rem';
const lineNumber = document.createElement('span');
lineNumber.classList = 'badge rounded-pill';
lineNumber.style.color = 'white';
lineNumber.style.background = 'red';
lineNumber.innerText = '32';
labelElement.appendChild(lineNumber);
labelElement.appendChild(lineName);
const label = new CSS2DObject(labelElement);
label.visible = false;
instance.add(label);
let previousFeature;
function pickFeatures(mouseEvent) {
const pickResult = instance.pickObjectsAt(mouseEvent);
const picked = pickResult.at(0);
function resetPickedFeatures() {
if (previousFeature) {
previousFeature.set('highlight', false);
wfsSource.updateFeature(previousFeature);
}
if (label.visible) {
label.visible = false;
}
previousFeature = null;
}
if (picked) {
const { x, y } = picked.point;
const coordinates = new Coordinates(instance.referenceCrs, x, y);
const features = wfsLayer.getVectorFeaturesAtCoordinate(coordinates, {
radius: 3,
xTileRes: 2,
yTileRes: 2,
});
if (features.length > 0) {
const firstFeature = features[features.length - 1];
previousFeature?.set('highlight', false);
firstFeature.set('highlight', true);
if (previousFeature !== firstFeature) {
wfsSource.updateFeature(previousFeature, firstFeature);
previousFeature = firstFeature;
}
label.position.set(x, y, 0);
label.visible = true;
lineNumber.style.background = getColor(getUid(firstFeature));
lineNumber.innerText = firstFeature.get('ligne');
lineName.innerText = firstFeature.get('nom_trace');
label.updateMatrixWorld(true);
} else {
resetPickedFeatures();
}
} else {
resetPickedFeatures();
}
}
instance.domElement.addEventListener('mousemove', pickFeatures);
Inspector.attach(document.getElementById('panelDiv'), instance);
<!doctype html>
<html lang="en">
<head>
<title>Draped WFS</title>
<meta charset="UTF-8" />
<meta name="name" content="wfs" />
<meta name="description" content="Display a WFS layer on a Map." />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="icon" href="https://giro3d.org/images/favicon.svg" />
<link href="https://giro3d.org/assets/bootstrap-custom.css" rel="stylesheet" />
<script src="https://giro3d.org/assets/bootstrap.bundle.min.js"></script>
<link
rel="stylesheet"
type="text/css"
href="https://giro3d.org/next/css/example.css"
/>
</head>
<body>
<div id="viewerDiv" class="m-0 p-0 w-100 h-100"></div>
<div id="panelDiv" class="position-absolute top-0 start-0 mh-100 overflow-auto"></div>
<script type="module" src="index.js"></script>
<script>
/* activate popovers */
const popoverTriggerList = [].slice.call(
document.querySelectorAll('[data-bs-toggle="popover"]'),
);
popoverTriggerList.map(
// bootstrap is used as script in the template, disable warning about undef
// eslint-disable-next-line no-undef
popoverTriggerEl =>
new bootstrap.Popover(popoverTriggerEl, {
trigger: 'hover',
placement: 'left',
content: document.getElementById(
popoverTriggerEl.getAttribute('data-bs-content'),
).innerHTML,
html: true,
}),
);
</script>
</body>
</html>
{
"name": "wfs",
"dependencies": {
"@giro3d/giro3d": "git+https://gitlab.com/giro3d/giro3d.git"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}