import { MathUtils } from "three/src/math/MathUtils.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 { Color, Vector3 } from "three";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";
import Instance from "@giro3d/giro3d/core/Instance.js";
import Extent from "@giro3d/giro3d/core/geographic/Extent.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";
import FeatureCollection from "@giro3d/giro3d/entities/FeatureCollection.js";
import Coordinates from "@giro3d/giro3d/core/geographic/Coordinates";
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",
);
const extent = new Extent(
"EPSG:2154",
-111629.52,
1275028.84,
5976033.79,
7230161.64,
);
const instance = new Instance({
target: "view",
crs: extent.crs,
});
// This is a GeoJSON with the default crs EPSG:4326
const arrondissementSource = new VectorSource({
format: new GeoJSON(),
url: "./data/paris_arrondissements.geojson",
});
function getHue(area) {
const minArea = 991153;
const maxArea = 16372542;
const hue = MathUtils.mapLinear(area, minArea, maxArea, 0.2, 0.8);
return MathUtils.clamp(hue, 0, 1);
}
// Creates the entity. The features will automatically be reprojected before being displayed.
const arrondissements = new FeatureCollection({
source: arrondissementSource,
extent,
ignoreZ: true,
minLevel: 0,
maxLevel: 0,
style: (feature) => {
// The style depends on the polygon's area
const t = getHue(feature.get("surface"));
const highlight = feature.get("highlight");
const brightness = highlight ? 1 : 0.7;
const color = new Color().setHSL(0, t, brightness * t, "srgb");
return {
fill: {
color,
depthTest: false,
renderOrder: 1,
},
stroke: highlight
? {
color: "white",
depthTest: false,
renderOrder: 2,
}
: null,
};
},
});
arrondissements.name = "arrondissements";
instance.add(arrondissements);
// Another GeoJSON in EPSG:3857
// Although this is non-standard in recent versions of
// the GeoJSON specification, OpenLayers and Giro3D still
// support GeoJSON files that have a different CRS than EPSG:4326.
const perimeterqaaSource = new VectorSource({
format: new GeoJSON(),
url: "./data/perimetreqaa.geojson",
});
const perimeterqaa = new FeatureCollection({
source: perimeterqaaSource,
extent,
ignoreZ: true,
minLevel: 0,
maxLevel: 0,
style: (feature) => {
const highlight = feature.get("highlight");
return {
fill: {
color: highlight ? "#5d914d" : "#41822d",
depthTest: false,
opacity: 0.7,
renderOrder: 3,
},
stroke: {
color: "#85f516",
lineWidth: highlight ? 4 : 1,
depthTest: false,
renderOrder: 4,
},
};
},
});
perimeterqaa.name = "perimeterqaa";
instance.add(perimeterqaa);
// A WFS source in EPSG:3857
const bdTopoSource = new VectorSource({
format: new GeoJSON(),
url: function url(bbox) {
return `${
"https://data.geopf.fr/wfs/ows" +
"?SERVICE=WFS" +
"&VERSION=2.0.0" +
"&request=GetFeature" +
"&typename=BDTOPO_V3:batiment" +
"&outputFormat=application/json" +
"&SRSNAME=EPSG:3857" +
"&startIndex=0" +
"&bbox="
}${bbox.join(",")},EPSG:3857`;
},
strategy: tile(createXYZ({ tileSize: 512 })),
});
const buildings = new FeatureCollection({
source: bdTopoSource,
// we specify that FeatureCollection should reproject the features before displaying them
dataProjection: "EPSG:3857",
// We are working on a flat, 2D scene, so we must ignore the Z coordinate of features, if any.
ignoreZ: true,
extent,
style: (feature) => {
const properties = feature.getProperties();
const highlighted = properties.highlight;
let color = "#FFFFFF";
if (highlighted) {
color = "cyan";
} else {
if (properties.usage_1 === "Résidentiel") {
color = "#9d9484";
} else if (properties.usage_1 === "Commercial et services") {
color = "#b0ffa7";
}
}
return {
fill: {
color,
depthTest: false,
renderOrder: 5,
},
stroke: {
color: "black",
renderOrder: 6,
depthTest: false,
},
};
},
minLevel: 11,
maxLevel: 11,
});
buildings.name = "buildings";
instance.add(buildings);
const position = new Coordinates("EPSG:2154", 652212.5, 6860754.1, 27717.3);
const lookAtCoords = new Coordinates("EPSG:2154", 652338.3, 6862087.1, 200);
const lookAt = new Vector3(lookAtCoords.x, lookAtCoords.y, lookAtCoords.z);
instance.view.camera.position.set(position.x, position.y, position.z);
instance.view.camera.lookAt(lookAt);
const controls = new MapControls(instance.view.camera, instance.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.target.copy(lookAt);
controls.saveState();
instance.view.setControls(controls);
// information on click
const resultTable = document.getElementById("results");
let previousObjects = [];
const objectsToUpdate = [];
function createResultTable(values) {
resultTable.innerHTML = "";
for (const value of values) {
const child = document.createElement("li");
// child.classList.add('list-group-item');
child.innerText = value;
resultTable.appendChild(child);
}
}
function pick(e) {
instance.notifyChange();
// pick objects
const pickedObjects = instance.pickObjectsAt(e, {
radius: 2,
where: [arrondissements, perimeterqaa],
});
// Reset highlights
previousObjects.forEach((o) => o.userData.feature.set("highlight", false));
const tableValues = [];
if (pickedObjects.length !== 0) {
resultTable.innerHTML = "";
for (const p of pickedObjects) {
const obj = p.object;
const feature = obj.userData.feature;
const entity = obj.userData.parentEntity;
objectsToUpdate.push(obj);
if (entity === arrondissements) {
tableValues.push(feature.get("l_ar"));
}
if (entity === perimeterqaa) {
tableValues.push("Improved Accessibility Zone");
}
// highlight it
feature.set("highlight", true);
}
}
createResultTable(tableValues);
instance.notifyChange([...previousObjects, ...objectsToUpdate]);
previousObjects = [...objectsToUpdate];
objectsToUpdate.length = 0;
}
instance.domElement.addEventListener("mousemove", pick);
Inspector.attach("inspector", instance);
