Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using it's URL and the proper URL extention.

+ add another resource

JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <script src="https://threejs.org/build/three.js"></script>

<script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>

<div id="scene-container"></div>
              
            
!

CSS

              
                body {
  margin: 0px;
  overflow: hidden;
  color: white;
  text-align: center;
}

h1 {
  position: absolute;
  width: 100%;
  z-index: 1;
  font-size: 1.5rem;
}

a {
  color: white;
}
a:hover {
  color: purple;
}

#scene-container {
  position: absolute;
  width: 100%;
  height: 100%;
}

              
            
!

JS

              
                function init() {
  const container = document.querySelector("#scene-container");

  const scene = new THREE.Scene();
  scene.background = new THREE.Color(0x8fbcd4);

  const camera = new THREE.PerspectiveCamera(
    35,
    container.clientWidth / container.clientHeight,
    0.1,
    1000
  );
  camera.position.set(-40, 40, 10);
  const controls = new THREE.OrbitControls(camera, container);

  const lights = createLights();
  const materials = createMaterials();
  const meshes = createMeshes(materials);

  scene.add(
    lights.ambient,
    lights.main,

    ...meshes.boxes
  );

  const renderer = createRenderer(container);

  setupOnWindowResize(camera, container, renderer);

  renderer.setAnimationLoop(() => {
    renderer.render(scene, camera);
  });

  setupSelectAndZoom(camera, container, controls, materials, meshes);
}

function createLights() {
  const ambient = new THREE.HemisphereLight(0xddeeff, 0x0f0e0d, 5);

  const main = new THREE.DirectionalLight(0xffffff, 5);
  main.position.set(10, 10, 10);

  return {
    ambient,
    main
  };
}

function createMaterials() {
  const main = new THREE.MeshStandardMaterial({
    color: 0xcccccc,
    flatShading: true,
    transparent: true,
    opacity: 0.8
  });

  main.color.convertSRGBToLinear();

  const highlight = new THREE.MeshStandardMaterial({
    color: 0xff4444,
    flatShading: true
  });

  highlight.color.convertSRGBToLinear();

  return {
    main,
    highlight
  };
}

function createMeshes(materials) {
  const geometry = new THREE.BoxBufferGeometry(1, 1, 1);
  geometry.translate(0, 0.5, 0);
  const boxes = [];

  for (let i = 0; i < 500; i++) {
    const mesh = new THREE.Mesh(geometry, materials.main);
    mesh.position.x = Math.random() * 60 - 30;
    mesh.position.y = 0;
    mesh.position.z = Math.random() * 60 - 30;
    mesh.scale.y = Math.random() * 10;
    mesh.updateMatrix();
    mesh.matrixAutoUpdate = false;

    boxes.push(mesh);
  }

  return {
    boxes
  };
}

function createRenderer(container) {
  const renderer = new THREE.WebGLRenderer({ antialias: true });
  renderer.setSize(container.clientWidth, container.clientHeight);

  renderer.setPixelRatio(window.devicePixelRatio);

  renderer.gammaFactor = 2.2;
  renderer.gammaOutput = true;

  renderer.physicallyCorrectLights = true;

  container.appendChild(renderer.domElement);

  return renderer;
}

function setupOnWindowResize(camera, container, renderer) {
  window.addEventListener("resize", () => {
    camera.aspect = container.clientWidth / container.clientHeight;
    camera.updateProjectionMatrix();

    renderer.setSize(container.clientWidth, container.clientHeight);
  });
}

init();

function setupSelectAndZoom(camera, container, controls, materials, meshes) {
  const selection = [];

  let isDragging = false;
  const mouse = new THREE.Vector2();
  const raycaster = new THREE.Raycaster();

  container.addEventListener(
    "mousedown",
    () => {
      isDragging = false;
    },
    false
  );

  container.addEventListener(
    "mousemove",
    () => {
      isDragging = true;
    },
    false
  );

  window.addEventListener(
    "mouseup",
    (event) => {
      if (isDragging) {
        isDragging = false;
        return;
      }

      isDragging = false;

      mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
      mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
      raycaster.setFromCamera(mouse, camera);

      const intersects = raycaster.intersectObjects(meshes.boxes);

      if (intersects.length > 0) {
        const mesh = intersects[0].object;

        if (selection.includes(mesh)) {
          mesh.material = materials.main;
          selection.splice(selection.indexOf(mesh), 1);
        } else {
          selection.push(mesh);
          mesh.material = materials.highlight;
        }

        if (selection.length > 0)
          zoomCameraToSelection(camera, controls, selection);
      }
    },
    false
  );
}

function zoomCameraToSelection(camera, controls, selection, fitRatio = 1.2) {
  const box = new THREE.Box3();

  for (const object of selection) box.expandByObject(object);

  const size = box.getSize(new THREE.Vector3());
  const center = box.getCenter(new THREE.Vector3());

  const maxSize = Math.max(size.x, size.y, size.z);
  const fitHeightDistance =
    maxSize / (2 * Math.atan((Math.PI * camera.fov) / 360));
  const fitWidthDistance = fitHeightDistance / camera.aspect;
  const distance = fitRatio * Math.max(fitHeightDistance, fitWidthDistance);

  const direction = controls.target
    .clone()
    .sub(camera.position)
    .normalize()
    .multiplyScalar(distance);

  controls.maxDistance = distance * 10;
  controls.target.copy(center);

  camera.near = distance / 100;
  camera.far = distance * 100;
  camera.updateProjectionMatrix();

  camera.position.copy(controls.target).sub(direction);

  controls.update();
}

              
            
!
999px

Console