title: Conversion of lat/lng coordinates to pixels on a given rotated map
body: <p>How do I convert lat/lng coordinates to pixels on a rotated map (a div)?</p>
  
  <p>The twist is that the map does not point towards north, but is tilted 10 degrees... and my high school math is failing me!</p>
  
  <p>I've found a couple of other questions that does the <a href="https://stackoverflow.com/questions/8898120/conversion-of-lat-lng-coordinates-to-pixels-on-a-given-map-with-javascript">conversion on a north-facing map</a>
  which points to <a href="http://www.learntby.me/javascript/latLngconversion.php" rel="nofollow noreferrer">here</a>.</p>
  
  <p>I am however not complete sure how to do it when the map is rotated.</p>
  
  <p>The map is a 3*3km map of a location in London.</p>
  
  <p>I'm using javascript, but any language will do :-)</p>