3D Tiles Point Cloud

#	Coordinate	Distance to camera
Double-click on the scene for picking

100%

import { Vector3 } from "three";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";

import Instance from "@giro3d/giro3d/core/Instance.js";
import Tiles3D from "@giro3d/giro3d/entities/Tiles3D.js";
import Tiles3DSource from "@giro3d/giro3d/sources/Tiles3DSource.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";

const tmpVec3 = new Vector3();

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 instance = new Instance({
  target: "view",
  crs: "EPSG:2154",
  backgroundColor: 0xcccccc,
});

// Configure Point Cloud
const pointcloud = new Tiles3D(
  new Tiles3DSource(
    "https://3d.oslandia.com/3dtiles/eglise_saint_blaise_arles/tileset.json",
  ),
);

function placeCamera(position, lookAt) {
  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.target.copy(lookAt);
  controls.enableDamping = true;
  controls.dampingFactor = 0.25;
  instance.view.setControls(controls);

  instance.notifyChange(instance.view.camera);
}

// add pointcloud to scene
function initializeCamera() {
  const bbox = pointcloud.root.boundingVolume.box
    .clone()
    .applyMatrix4(pointcloud.root.matrixWorld);

  instance.view.camera.far = 2.0 * bbox.getSize(tmpVec3).length();

  const ratio = bbox.getSize(tmpVec3).x / bbox.getSize(tmpVec3).z;
  const position = bbox.min
    .clone()
    .add(bbox.getSize(tmpVec3).multiply(new Vector3(0, 0, ratio * 0.5)));
  const lookAt = bbox.getCenter(tmpVec3);
  lookAt.z = bbox.min.z;
  placeCamera(position, lookAt);
}

instance.add(pointcloud).then(initializeCamera);

Inspector.attach("inspector", instance);

const resultsTable = document.getElementById("results-body");
const formatter = new Intl.NumberFormat();

function format(point) {
  return `x: ${formatter.format(point.x)}\n
            y: ${formatter.format(point.y)}\n
            z: ${formatter.format(point.z)}`;
}

instance.domElement.addEventListener("dblclick", (e) => {
  const picked = instance.pickObjectsAt(e, { radius: 5, limit: 10 });

  if (picked.length === 0) {
    const row = document.createElement("tr");
    const count = document.createElement("th");
    count.setAttribute("scope", "row");
    count.innerText = "-";
    const coordinates = document.createElement("td");
    coordinates.innerText = "-";
    const distanceToCamera = document.createElement("td");
    distanceToCamera.innerText = "-";
    row.append(count, coordinates, distanceToCamera);
    resultsTable.replaceChildren(row);
  } else {
    const rows = picked.map((p, i) => {
      const row = document.createElement("tr");
      const count = document.createElement("th");
      count.setAttribute("scope", "row");
      count.innerText = `${i + 1}`;
      const coordinates = document.createElement("td");
      coordinates.innerHTML = format(p.point);
      const distanceToCamera = document.createElement("td");
      distanceToCamera.innerText = formatter.format(p.distance);
      row.append(count, coordinates, distanceToCamera);
      return row;
    });
    resultsTable.replaceChildren(...rows);
  }
});

<!doctype html>
<html lang="en">
  <head>
    <title>3D Tiles Point Cloud</title>
    <meta charset="UTF-8" />
    <meta name="name" content="pointcloud" />
    <meta name="description" content="Display a 3D Tiles point cloud." />
    <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>

    <div class="side-pane-with-status-bar">
      <div class="card">
        <div class="card-body" style="max-width: 30vw; overflow: auto">
          <!-- Result table -->
          <table class="table small">
            <thead>
              <tr>
                <th scope="col">#</th>
                <th scope="col">Coordinate</th>
                <th scope="col">Distance to camera</th>
              </tr>
            </thead>
            <tbody id="results-body">
              <tr>
                <th scope="row" colspan="4">
                  Double-click on the scene for picking
                </th>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
    </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": "pointcloud",
    "dependencies": {
        "@giro3d/giro3d": "0.40.0"
    },
    "devDependencies": {
        "vite": "^3.2.3"
    },
    "scripts": {
        "start": "vite",
        "build": "vite build"
    }
}