title: Three.js change light intensity dynamically
body: <p>Is there a way that i have not seen to change the light intensity of directional lights on the fly? Or even ambient light?</p>
  
  <pre><code>ambientLight = new THREE.AmbientLight(0xffffff);
  scene.add(ambientLight);            
  
  directionalLightL = new THREE.DirectionalLight(0xffffff, dLight, 0);
  directionalLightL.position.set(dlpX, dlpY, dlpZ);
  scene.add(directionalLightL);
  </code></pre>
  
  <p>So that is done initially to render, but how can i change just one specific lights intensity afterwards? Remove/re-add the light? Find it in the dom and change it? Something in the API i have not noticed?</p>