import {
Vector3,
CubeTextureLoader,
DirectionalLight,
AmbientLight,
Fog,
Color,
MathUtils,
DoubleSide,
} from "three";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";
import GeoJSON from "ol/format/GeoJSON.js";
import VectorSource from "ol/source/Vector.js";
import { createXYZ } from "ol/tilegrid.js";
import { tile } from "ol/loadingstrategy.js";
import Instance from "@giro3d/giro3d/core/Instance.js";
import Extent from "@giro3d/giro3d/core/geographic/Extent.js";
import WmtsSource from "@giro3d/giro3d/sources/WmtsSource.js";
import ColorLayer from "@giro3d/giro3d/core/layer/ColorLayer.js";
import ElevationLayer from "@giro3d/giro3d/core/layer/ElevationLayer.js";
// NOTE: changing the imported name because we use the native `Map` object in this example.
import Giro3dMap from "@giro3d/giro3d/entities/Map.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";
import BilFormat from "@giro3d/giro3d/formats/BilFormat.js";
import FeatureCollection from "@giro3d/giro3d/entities/FeatureCollection.js";
Instance.registerCRS(
"EPSG:2154",
"+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs",
);
Instance.registerCRS(
"IGNF:WGS84G",
'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]',
);
const SKY_COLOR = new Color(0xf1e9c6);
const instance = new Instance({
target: "view",
crs: "EPSG:2154",
backgroundColor: SKY_COLOR,
});
const extent = new Extent(
"EPSG:2154",
-111629.52,
1275028.84,
5976033.79,
7230161.64,
);
// create a map
const map = new Giro3dMap({
extent,
backgroundColor: "gray",
lighting: {
enabled: true,
elevationLayersOnly: true,
},
discardNoData: true,
side: DoubleSide,
});
instance.add(map);
const noDataValue = -1000;
const url =
"https://data.geopf.fr/wmts?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities";
// Let's build the elevation layer from the WMTS capabilities
WmtsSource.fromCapabilities(url, {
layer: "ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES",
format: new BilFormat(),
noDataValue,
})
.then((elevationWmts) => {
map.addLayer(
new ElevationLayer({
name: "elevation",
extent: map.extent,
// We don't need the full resolution of terrain
// because we are not using any shading. This will save a lot of memory
// and make the terrain faster to load.
resolutionFactor: 0.25,
minmax: { min: 0, max: 5000 },
noDataOptions: {
replaceNoData: false,
},
source: elevationWmts,
}),
);
})
.catch(console.error);
// Let's build the color layer from the WMTS capabilities
WmtsSource.fromCapabilities(url, {
layer: "HR.ORTHOIMAGERY.ORTHOPHOTOS",
})
.then((orthophotoWmts) => {
map.addLayer(
new ColorLayer({
name: "color",
extent: map.extent,
source: orthophotoWmts,
}),
);
})
.catch(console.error);
const buildingSource = new VectorSource({
format: new GeoJSON(),
url: function url(bbox) {
return `${
"https://data.geopf.fr/wfs/ows" +
"?SERVICE=WFS" +
"&VERSION=2.0.0" +
"&request=GetFeature" +
"&typename=BDTOPO_V3:batiment" +
"&outputFormat=application/json" +
"&SRSNAME=EPSG:2154" +
"&startIndex=0" +
"&bbox="
}${bbox.join(",")},EPSG:2154`;
},
strategy: tile(createXYZ({ tileSize: 512 })),
});
const hoverColor = new Color("yellow");
// This is the style function that will assign a different style depending on a feature's attribute.
// The `feature` argument is an OpenLayers feature.
const buildingStyle = (feature) => {
const properties = feature.getProperties();
let fillColor = "#FFFFFF";
const hovered = properties.hovered ?? false;
const clicked = properties.clicked ?? false;
switch (properties.usage_1) {
case "Industriel":
fillColor = "#f0bb41";
break;
case "Agricole":
fillColor = "#96ff0d";
break;
case "Religieux":
fillColor = "#41b5f0";
break;
case "Sportif":
fillColor = "#ff0d45";
break;
case "Résidentiel":
fillColor = "#cec8be";
break;
case "Commercial et services":
fillColor = "#d8ffd4";
break;
}
const fill = clicked
? "yellow"
: hovered
? new Color(fillColor).lerp(hoverColor, 0.2) // Let's use a slightly brighter color for hover
: fillColor;
return {
fill: {
color: fill,
shading: true,
},
stroke: {
color: clicked ? "yellow" : hovered ? "white" : "black",
lineWidth: clicked ? 5 : undefined,
},
};
};
// Let's compute the extrusion offset of building polygons to give them walls.
const extrusionOffsetCallback = (feature) => {
const properties = feature.getProperties();
const buildingHeight = properties["hauteur"];
const extrusionOffset = -buildingHeight;
if (Number.isNaN(extrusionOffset)) {
return null;
}
return extrusionOffset;
};
const featureCollection = new FeatureCollection({
source: buildingSource,
extent,
extrusionOffset: extrusionOffsetCallback,
style: buildingStyle,
minLevel: 11,
maxLevel: 11,
});
instance.add(featureCollection);
// To make sure that the buildings remain correctly displayed whenever
// one entity become transparent (i.e it's opacity is less than 1), we need
// to set the render of the feature collection to be greater than the map's.
map.renderOrder = 0;
featureCollection.renderOrder = 1;
// Add a sunlight
const sun = new DirectionalLight("#ffffff", 2);
sun.position.set(1, 0, 1).normalize();
sun.updateMatrixWorld(true);
instance.scene.add(sun);
// We can look below the floor, so let's light also a bit there
const sun2 = new DirectionalLight("#ffffff", 0.5);
sun2.position.set(0, 1, 1);
sun2.updateMatrixWorld();
instance.scene.add(sun2);
// Add an ambient light
const ambientLight = new AmbientLight(0xffffff, 0.2);
instance.scene.add(ambientLight);
instance.view.camera.position.set(
913349.2364044407,
6456426.459171033,
1706.0108044011636,
);
const lookAt = new Vector3(913896, 6459191, 200);
instance.view.camera.lookAt(lookAt);
const controls = new MapControls(instance.view.camera, instance.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.4;
controls.target.copy(lookAt);
controls.saveState();
instance.view.setControls(controls);
// add a skybox background
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;
// information on click
const resultTable = document.getElementById("results");
let lastCameraPosition = new Vector3(0, 0, 0);
const tempVec3 = new Vector3(0, 0, 0);
function truncate(value, length) {
if (value == null) {
return null;
}
const text = `${value}`;
if (text.length < length) {
return text;
}
return text.substring(0, length) + "…";
}
// Fill the attribute table with the objects' attributes.
function fillTable(objects) {
resultTable.innerHTML = "";
document.getElementById("card").style.display =
objects.length > 0 ? "block" : "none";
for (const obj of objects) {
if (!obj.userData.feature) {
continue;
}
const p = obj.userData.feature.getProperties();
const entries = [];
for (const [key, value] of Object.entries(p)) {
if (key !== "geometry" && key !== "clicked" && key !== "hovered") {
const entry = `<tr>
<td title="${key}"><code>${truncate(key, 12)}</code></td>
<td title="${value}">${truncate(value, 18) ?? "<code>null</code>"}</td>
</tr>`;
entries.push(entry);
}
}
resultTable.innerHTML += `
<table class="table table-sm table-striped">
<thead>
<tr>
<th scope="col">Name</th>
<th scope="col">Value</th>
</tr>
</thead>
<tbody>
${entries.join("")}
</tbody>
</table>
`;
}
}
const previousHovered = [];
const previousClicked = [];
const objectsToUpdate = [];
function pick(e, click) {
const pickedObjects = instance.pickObjectsAt(e, {
where: [featureCollection],
});
if (click) {
previousClicked.forEach((obj) =>
obj.userData.feature.set("clicked", false),
);
} else {
previousHovered.forEach((obj) =>
obj.userData.feature.set("hovered", false),
);
}
const property = click ? "clicked" : "hovered";
objectsToUpdate.length = 0;
if (pickedObjects.length > 0) {
const picked = pickedObjects[0];
const obj = picked.object;
const { feature } = obj.userData;
feature.set(property, true);
objectsToUpdate.push(obj);
}
if (click) {
fillTable(objectsToUpdate);
}
// To avoid updating all the objects and lose a lot of performance,
// we only update the objects that have changed.
const updatedObjects = [
...previousHovered,
...previousClicked,
...objectsToUpdate,
];
if (click) {
previousClicked.splice(0, previousClicked.length, ...objectsToUpdate);
} else {
previousHovered.splice(0, previousHovered.length, ...objectsToUpdate);
}
if (updatedObjects.length > 0) {
featureCollection.updateStyles(updatedObjects);
}
}
const hover = (e) => pick(e, false);
const click = (e) => pick(e, true);
instance.domElement.addEventListener("mousemove", hover);
instance.domElement.addEventListener("click", click);
const DOWN_VECTOR = new Vector3(0, 0, -1);
const EARTH_RADIUS = 6_3781_000;
const tmpVec3 = new Vector3();
const fog = new Fog(SKY_COLOR, 1, 2);
instance.scene.fog = fog;
function processFogAndClippingPlanes(camera) {
// Compute the tilt, in radians, of the camera.
const tilt = DOWN_VECTOR.angleTo(camera.camera.getWorldDirection(tmpVec3));
const altitude = MathUtils.clamp(camera.camera.position.z, 20, 100000);
const maxFarPlane = 9_999_999;
const actualTilt = MathUtils.clamp(tilt, 0, Math.PI / 3);
const horizon = Math.sqrt(2 * altitude * EARTH_RADIUS) * 0.2;
camera.maxFarPlane = MathUtils.mapLinear(
actualTilt,
0,
Math.PI / 3,
maxFarPlane,
horizon,
);
fog.far = camera.far;
fog.near = MathUtils.lerp(camera.near, camera.far, 0.2);
}
instance.addEventListener("after-camera-update", (event) =>
processFogAndClippingPlanes(event.camera),
);
processFogAndClippingPlanes(instance.view);
Inspector.attach("inspector", instance);
