Multiple texture

by jmcjc5u

HTML

<div id="info">Multiple Material</div>
<script src="https://threejs.org/build/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.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() {
  scene = new THREE.Scene();

  camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
  camera.position.z = 150;
  scene.add(camera);

  renderer = new THREE.WebGLRenderer({antialias:true});
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setClearColor(0x888888);

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

  ////////////////////////////////////////////////////////////////////////////////////////
  var geom = new THREE.SphereGeometry(30, 10, 10);
  var material1 = new THREE.MeshBasicMaterial({
    color: 'cyan'
  });
  var material2 = new THREE.MeshBasicMaterial({
    color: 'red',
    wireframe: true,
  });

  // create a multimaterial
  var box = createMultiMaterialObject(geom, [material1, material2]);
  scene.add(box);

  // might need to deploy polygonOffset to remove aliasing artifact
}


function animate() {

	controls.update();
  requestAnimationFrame(animate);
  render();

}

//https://github.com/mrdoob/three.js/blob/dev/examples/jsm/utils/SceneUtils.js#L113
function createMultiMaterialObject( geometry, materials ) {

	const group = new THREE.Group();
	for ( let i = 0, l = materials.length; i < l; i ++ ) {
		group.add( new THREE.Mesh( geometry, materials[ i ] ) );
  }
	return group;

}

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