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";
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",
);
const extent = new Extent(
"EPSG:3946",
1837816.94334,
1847692.32501,
5170036.4587,
5178412.82698,
);
const instance = new Instance({
target: "view",
crs: extent.crs,
backgroundColor: 0x0a3b59,
});
const map = new 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({
dataProjection: "EPSG:3946",
data: {
url:
"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",
format: new GeoJSON(),
},
style,
});
const wfsLayer = new ColorLayer({
name: "lyon_tcl_bus",
extent,
source: wfsSource,
});
map.addLayer(wfsLayer);
instance.view.camera.position.set(1839739, 5171618, 910);
const controls = new MapControls(instance.view.camera, instance.domElement);
controls.target = new Vector3(1840839, 5172718, 0);
controls.saveState();
controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.maxPolarAngle = Math.PI / 2.3;
instance.view.setControls(controls);
const labelElement = document.createElement("div");
labelElement.classList.value = "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.value = "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[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("inspector", 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/latest/examples/css/example.css"
/>
</head>
<body>
<div id="view" class="m-0 p-0 w-100 h-100"></div>
<div
id="inspector"
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": "0.40.0"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}