Display features from a WFS source as 3D meshes
import { Color, CubeTextureLoader } from 'three';
import { CSS2DObject } from 'three/examples/jsm/renderers/CSS2DRenderer.js';
import { MapControls } from 'three/examples/jsm/controls/MapControls.js';
import { createXYZ } from 'ol/tilegrid.js';
import { tile } from 'ol/loadingstrategy.js';
import Extent from '@giro3d/giro3d/core/geographic/Extent.js';
import Coordinates from '@giro3d/giro3d/core/geographic/Coordinates.js';
import GeoJSON from 'ol/format/GeoJSON.js';
import VectorSource from 'ol/source/Vector.js';
import TileWMS from 'ol/source/TileWMS.js';
import Instance from '@giro3d/giro3d/core/Instance.js';
import ColorLayer from '@giro3d/giro3d/core/layer/ColorLayer.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';
import FeatureCollection from '@giro3d/giro3d/entities/FeatureCollection.js';
import Map from '@giro3d/giro3d/entities/Map.js';
import TiledImageSource from '@giro3d/giro3d/sources/TiledImageSource.js';
// 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 a 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: 'EPSG:3946' });
// Adds the map that will contain the layers.
const map = new Map('planar', { extent });
instance.add(map);
// Adds a WMS imagery layer
const olSource = new TileWMS({
url: 'https://wxs.ign.fr/ortho/geoportail/r/wms',
projection: 'EPSG:3946',
params: {
LAYERS: ['HR.ORTHOIMAGERY.ORTHOPHOTOS'],
FORMAT: 'image/jpeg',
},
});
const wmsSource = new TiledImageSource({ source: olSource });
const colorLayer = new ColorLayer(
'wms_imagery',
{
source: wmsSource,
},
);
map.addLayer(colorLayer);
// define the source of our data
const busLinesSource = new VectorSource({
format: new GeoJSON(),
url: function url(tileExtent) {
return (
`${'https://download.data.grandlyon.com/wfs/rdata'
+ '?SERVICE=WFS'
+ '&VERSION=2.0.0'
+ '&request=GetFeature'
+ '&typename=tcl_sytral.tcllignebus_2_0_0'
+ '&outputFormat=application/json;%20subtype=geojson'
+ '&SRSNAME=EPSG:3946'
+ '&startIndex=0'
+ '&bbox='}${tileExtent.join(',')},EPSG:3946`
);
},
strategy: tile(createXYZ({ tileSize: 512 })),
});
// Create the `FeatureCollection` entity that will load our features as meshes.
const busLines = new FeatureCollection('bus lines', {
source: busLinesSource,
extent,
minLevel: 0,
maxLevel: 0,
elevation: 50,
// we can modify the mesh through the `style` property
style: feat => {
const lineName = feat.getProperties().ligne;
// color according to line name
let color;
if (lineName.startsWith('C')) {
color = new Color('red');
} else if (lineName.startsWith('S')) {
color = new Color('yellow');
} else {
color = new Color('blue');
}
return { color };
},
});
// Let's add our bus lines feature collection to the scene
instance.add(busLines);
// define another source
const busStopSource = new VectorSource({
format: new GeoJSON(),
url: function url(tileExtent) {
return (
`${'https://download.data.grandlyon.com/wfs/rdata'
+ '?SERVICE=WFS'
+ '&VERSION=2.0.0'
+ '&request=GetFeature'
+ '&typename=tcl_sytral.tclarret'
+ '&outputFormat=application/json; subtype=geojson'
+ '&SRSNAME=EPSG:3946'
+ '&bbox='}${tileExtent.join(',')},EPSG:3946`
);
},
strategy: tile(createXYZ({ tileSize: 512 })),
});
// Create the `FeatureCollection` entity that will load our features as meshes.
const busStops = new FeatureCollection('bus stops', {
source: busStopSource,
extent,
minLevel: 3,
maxLevel: 3,
elevation: 50,
// we can use the `style` callback, but it's also possible to modify the resulting mesh directly
// with the `onMeshCreated` option
onMeshCreated: mesh => {
mesh.material.size = 5;
mesh.material.sizeAttenuation = false;
mesh.material.color = new Color('#ffe44c');
},
});
instance.add(busStops);
// add a skybox background, just to look nicer :-)
const cubeTextureLoader = new CubeTextureLoader();
cubeTextureLoader.setPath('image/skyboxsun25deg_zup/');
const cubeTexture = cubeTextureLoader.load([
'px.jpg', 'nx.jpg',
'py.jpg', 'ny.jpg',
'pz.jpg', 'nz.jpg',
]);
instance.scene.background = cubeTexture;
// Place camera at the bottom left corner of the map
const cameraPosition = new Coordinates(
'EPSG:3946',
extent.west(), extent.south(), 10000,
).xyz();
instance.camera.camera3D.position.copy(cameraPosition);
// and look at the center of our extent
instance.camera.camera3D.lookAt(extent.center().xyz());
// we need to tell Giro3D we changed the camera position
instance.notifyChange(instance.camera.camera3D);
// Creates controls
const controls = new MapControls(
instance.camera.camera3D,
viewerDiv,
);
// MapControls needs a target, let's set it at our lookAt position
controls.target = extent.center().xyz();
controls.saveState();
controls.enableDamping = true;
controls.dampingFactor = 0.2;
instance.useTHREEControls(controls);
// display labels
const text = document.createElement('div');
text.className = 'label';
// Any CSS style is supported
text.style.color = '#ffffff';
text.style.padding = '0.2em 1em';
text.style.maxWidth = '200px';
text.style.border = '2px solid #cccccc';
text.style.backgroundColor = '#080808';
text.style.textAlign = 'center';
text.style.opacity = 0.7;
const wrapper = document.createElement('div');
wrapper.style.marginTop = '2rem';
wrapper.appendChild(text);
// then wrap it in a CSS2DObject
const label = new CSS2DObject(wrapper);
instance.add(label);
instance.domElement.addEventListener('mousemove', e => {
const picked = instance.pickObjectsAt(e, { radius: 2, limit: 1, where: [busStops, busLines] });
if (picked.length !== 0) {
const found = picked[0];
const obj = found.object;
if (found.layer === busStops) {
text.innerText = `Bus stop "${obj.userData.properties.nom}"`;
} else if (found.layer === busLines) {
text.innerText = `Bus line ${obj.userData.properties.ligne}`;
}
// Virtually any inner markup is supported, here we're just inserting text
label.name = text.innerText;
// take the middle vertex as position
label.position.set(found.point.x, found.point.y, found.point.z);
label.updateMatrixWorld();
label.visible = true;
instance.notifyChange(label);
}
});
Inspector.attach(document.getElementById('panelDiv'), instance);