title: How to change the zOrder of object with Threejs?
body: <p>I made a scene using the webgl renderer where I put multiple 3D objects that I can select and move. However when an object is selected, I'd like to draw its axes. No problem with drawing the lines to the center of the object but I'd like them to appear in front of anything else on the scene so that they are visible even if other objects are in front - Like in Blender.</p>
  
  <p>I tried to play with the renderDepth param but I don't think I understood how to use it and I didn't get any result.</p>
  
  <p>Thank you for your help.</p>