Texture Animation

by Rebecca Chen

HTML

<div id="info">Texture Coordinate Transformation
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js"></script>
<script src="https://dl.dropboxusercontent.com/u/3587259/Code/Threejs/OrbitControls.js">
</script>

CSS

#info {
  position: absolute;
  top: 1%;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffee12;
}

body {
  overflow: hidden;
}

JavaScript

var renderer, scene, camera, controls;
var texture, mesh;

init();
animate();

function texturedFace() {
  var geometry = new THREE.Geometry();
  geometry.vertices.push(
    new THREE.Vector3(-50, 50, 0),
    new THREE.Vector3(-50, -50, 0),
    new THREE.Vector3(50, -50, 0),
    new THREE.Vector3(50, 50, 0)
  );

  var face;
  face = new THREE.Face3(0, 1, 2);
  face.materialIndex = 0;
  geometry.faces.push(face);
  face = new THREE.Face3(0, 2, 3);
  face.materialIndex = 0;
  geometry.faces.push(face);

  geometry.faceVertexUvs[0].push([new THREE.Vector2(0, 1), new THREE.Vector2(0, 0), new THREE.Vector2(1, 0)]);
  geometry.faceVertexUvs[0].push([new THREE.Vector2(0, 1), new THREE.Vector2(1, 0), new THREE.Vector2(1, 1)]);

	geometry.computeBoundingSphere();
  geometry.computeFaceNormals();
  geometry.computeVertexNormals();

  // CORS:
  // http://stackoverflow.com/questions/24087757/three-js-and-loading-a-cross-domain-image
  THREE.ImageUtils.crossOrigin = '';
  texture = THREE.ImageUtils.loadTexture('http://i.imgur.com/ggZYfVC.jpg');
  //texture.repeat.set(, 14);
  texture.wrapS = THREE.RepeatWrapping;
  texture.wrapT = THREE.RepeatWrapping;
  texture.minFilter = THREE.LinearMipMapLinearFilter;

  return new THREE.Mesh(geometry,
    new THREE.MeshBasicMaterial({
      map: texture,
      side: THREE.DoubleSide
    }));
}

function init() {
  scene = new THREE.Scene();
  camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 5000);
  camera.position.z = 200;
  renderer = new THREE.WebGLRenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setClearColor(0x888888);

  document.body.appendChild(renderer.domElement);
  controls = new THREE.OrbitControls(camera, renderer.domElement);

  //////////////////////////////////////////////////////////
  mesh = texturedFace();
  scene.add(mesh);
}

function animate() {
  controls.update();

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