Method rotate

src/Geoscape/Globe.cpp:1054–1061

* Rotates the globe by a set amount. Necessary * since the globe keeps rotating while a button * is pressed down. */

 * is pressed down.
 */
void Globe::rotate()
{
	_cenLon += _rotLon * ((110 - Options::geoScrollSpeed) / 100.0) / (_zoom+1);
	_cenLat += _rotLat * ((110 - Options::geoScrollSpeed) / 100.0) / (_zoom+1);
	_game->getSavedGame()->setGlobeLongitude(_cenLon);
	_game->getSavedGame()->setGlobeLatitude(_cenLat);
	invalidate();
}

/**
 * Draws the whole globe, part by part.