code: public static Point2D getBitmapCoordinate(GeoPosition c, int zoomLevel, TileFactoryInfo info)
      {
          return getBitmapCoordinate(c.getLatitude(), c.getLongitude(), zoomLevel, info);
      }
docs: Given a position (latitude/longitude pair) and a zoom level, return the appropriate point in <em>pixels</em>. The
  zoom level is necessary because pixel coordinates are in terms of the zoom level
  @param c A lat/lon pair
  @param zoomLevel the zoom level to extract the pixel coordinate for
  @param info the tile factory info
  @return the coordinate