memory test

dispose....

by Rebecca Chen

HTML

<div id="info">Memory test
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/107/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js">


</script>

CSS

#info {
  position: absolute;
  top: 2%;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffff00
}

body {
  overflow: hidden;
}

JavaScript

javascript:(function(){var script=document.createElement('script');script.onload=function(){var stats=new Stats();document.body.appendChild(stats.dom);requestAnimationFrame(function loop(){stats.update();requestAnimationFrame(loop)});};script.src='//mrdoob.github.io/stats.js/build/stats.min.js';document.head.appendChild(script);})()


// https://github.com/mrdoob/three.js/issues/5175

var scene, renderer, camera;
var mesh;

init();
animate();

function init() {
  var width = window.innerWidth;
  var height = window.innerHeight;

  renderer = new THREE.WebGLRenderer({
    antialias: true
  });
  renderer.setSize(width, height);
  renderer.setClearColor(0x888888);
  document.body.appendChild(renderer.domElement);

  scene = new THREE.Scene();

  camera = new THREE.PerspectiveCamera(45, width / height, 0.1, 10000);
  camera.position.set(0, 32, 80);
  camera.lookAt(new THREE.Vector3(0, 0, 0));

  let controls = new THREE.OrbitControls(camera, renderer.domElement);

  var gridXZ = new THREE.GridHelper(100, 10, 'red','white');
  scene.add(gridXZ);

  var pointLight = new THREE.PointLight(0xffffff);
  pointLight.position.set(0, 300, 200);
  scene.add(pointLight);
  var ambientLight = new THREE.AmbientLight(0x111111);
  scene.add(ambientLight);

  mesh = new THREE.Mesh(new THREE.TorusKnotGeometry(10, 3, 100, 100),
    new THREE.MeshLambertMaterial());
  scene.add(mesh);
}

function animate() {
  // clone is ok, only increment reference count
  //var clone = mesh.clone(); 

  scene.remove(mesh);
  // mesh.geometry.dispose();
  // mesh.material.dispose();

  mesh = new THREE.Mesh(new THREE.TorusKnotGeometry(10, 3, 100, 100),
    new THREE.MeshLambertMaterial());

  mesh.position.x = -200 * Math.random() + 100;
  mesh.position.z = -200 * Math.random() + 100;
  scene.add(mesh);

  requestAnimationFrame(animate);
  renderer.render(scene, camera);
}