def re_center(self, x, y, lat, lon):
        '''re-center view for pixel x,y'''
        state = self.state
        if lat is None or lon is None:
            return
        (lat2,lon2) = self.coordinates(x, y)
        distance = mp_util.gps_distance(lat2, lon2, lat, lon)
        bearing  = mp_util.gps_bearing(lat2, lon2, lat, lon)
        (state.lat, state.lon) = mp_util.gps_newpos(state.lat, state.lon, bearing, distance)
def re_center ( self , x , y , lat , lon ) : state = self . state if lat is None or lon is None : return ( lat2 , lon2 ) = self . coordinates ( x , y ) distance = mp_util . gps_distance ( lat2 , lon2 , lat , lon ) bearing = mp_util . gps_bearing ( lat2 , lon2 , lat , lon ) ( state . lat , state . lon ) = mp_util . gps_newpos ( state . lat , state . lon , bearing , distance )
re-center view for pixel x,y