title: AndEngine setRotationCenter moves rotated objects
body: <p>I am trying to rotate an object from one point which is changing while rotating.</p>
  
  <p>When I call to setRotationCenter(float,float) the IMAGE of the object moves to some arbitrary point. This only happens with rotated objects, I mean, if I call setRotationCenter in an object with rotation=0, everything works well.</p>
  
  <p>My Class extends Sprite.
  I am not overriding setRotationCenter.
  My AndEngine version has not been updated for long.</p>
  
  <p>I post a log of what I am doing and numbers I got. All should be ok looking at them, but I am actually seing my object in the screen moving along vector v(1,1) (notice that is the increment of rotation center)</p>
  
  <pre><code>log item touch event previous rotation 30.0
  log item touch event previous rotation center 150.0: 150.0
  log item touch event previous position 100.0: 150.0
  log item touch event CALL TO setRotationCenter(151.0,151.0);
  log item touch event current rotation 30.0
  log item touch event current rotation center 151.0: 151.0
  log item touch event current position 100.0: 150.0
  
  log item touch event previous rotation 30.0
  log item touch event previous rotation center 151.0: 151.0
  log item touch event previous position 100.0: 150.0
  log item touch event CALL TO setRotationCenter(152.0,152.0);
  log item touch event current rotation 30.0
  log item touch event current rotation center 152.0: 152.0
  log item touch event current position 100.0: 150.0
  </code></pre>