title: OpenLayers 3 - Display text on map, text size relative to zoom
body: <p>I'm currently working on OL3 and trying to display a text on my map. No problem with that, I'm using the text property of ol.style to display it.</p>
  
  <p>My problem is the following: this text has always the same size. ie: if I'm unzooming max or zooming max, it's still the same size on the screen. I want it to grow while zooming, and shrink while unzooming to keep the text's size relative to the ground.</p>
  
  <p>I drew the expected result in the following image: 
  <a href="http://i.stack.imgur.com/dvp1e.png" rel="nofollow">Expected result</a></p>
  
  <p>Is anyone having an idea? Maybe without using a ol.style text?</p>