title: Understanding MeshLambertMaterial Three.js
body: <p>I have this code, it works perfectly:</p>
  
  <pre><code>mesh = new THREE.Mesh( new THREE.SphereGeometry( 500, 60, 40 ), new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'images/texture01.jpg' ) } ) );
  mesh.scale.x = -1;
  scene.add( mesh );
  </code></pre>
  
  <p>But when the material change to MeshLambertMaterial, the object is not displayed and no shows errors. </p>
  
  <p>I need it for this type of material to play with the opacity ..</p>
  
  <p>Thanks!!</p>