hw2 helper

texture map

by Leoooo

HTML

<div id="info">Alpha Map
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/94/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js">


</script>
<script src="https://jyunming-chen.github.io/tutsplus/js/KeyboardState.js"></script>

CSS

#info {
  position: absolute;
  top: 0px;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffff00
}

body {
  overflow: hidden;
}

JavaScript

var camera, scene, renderer;
var controls;

init();
animate();

function init() {
  renderer = new THREE.WebGLRenderer({
    antialias: true
  });

  renderer.setSize(window.innerWidth, window.innerHeight);
  document.body.appendChild(renderer.domElement);

  scene = new THREE.Scene();
  camera = new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 1000);
  camera.position.z = 100;
  window.addEventListener('resize', onWindowResize, false);

  var light = new THREE.PointLight(0xffffff, 1);
  light.position.set(50, 50, 50);
  scene.add(light);

  controls = new THREE.OrbitControls(camera, renderer.domElement)
  /////////////////////////////////////////////////////////////////////
  let loader = new THREE.TextureLoader();
  loader.crossOrigin = '';
  texture = loader.load('https://i.imgur.com/DrvlmNW.jpg');
  alpha = loader.load(' ');

  var texMat = new THREE.MeshPhongMaterial({
    map: texture,
    alphaMap: alpha,
    transparent: true,
    side: THREE.DoubleSide
  });
  var floor = new THREE.Mesh(new THREE.PlaneGeometry(80, 80), texMat);
  scene.add(floor);

  let box = new THREE.Mesh(new THREE.BoxGeometry(50, 50, 50), new THREE.MeshNormalMaterial())
  scene.add(box)
  box.position.z = -50
}

function onWindowResize() {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
}

function animate() {
  requestAnimationFrame(animate);
  render();
}

function render() {
  renderer.render(scene, camera);
}