function requestAnimationFrameEngine() {
  requestAnimationFrame(requestAnimationFrameEngine);

  if (!_engine.running) {
    return;
  }

  _engine.render();
}
/**
 * RequestAnimationFrame wrapper for Engine rendering.
 * @private
 */
RequestAnimationFrame wrapper for Engine rendering.
@private
RequestAnimationFrame wrapper for Engine rendering . @private
function requestAnimationFrameEngine() {
  requestAnimationFrame(requestAnimationFrameEngine);
  if (!_engine.running) {
    return;
  }
  _engine.render();
}
function requestAnimationFrameEngine ( ) { requestAnimationFrame ( requestAnimationFrameEngine ) ; if ( ! _engine . running ) { return ; } _engine . render ( ) ; }
RequestAnimationFrame wrapper for Engine rendering.
RequestAnimationFrame wrapper for Engine rendering .