sdf.py 文件源码

def get_key_bounds(self, level, cell_iarr):
        """
        Get index keys for index file supplied.

        level: int
            Requested level
        cell_iarr: array-like, length 3
            Requested cell from given level.

        Returns:
            lmax_lk, lmax_rk
        """
        shift = self.level-level
        level_buff = 0
        level_lk = self.get_key(cell_iarr + level_buff)
        level_rk = self.get_key(cell_iarr + level_buff) + 1
        lmax_lk = (level_lk << shift*3)
        lmax_rk = (((level_rk) << shift*3) -1)
        #print "Level ", level, np.binary_repr(level_lk, width=self.level*3), np.binary_repr(level_rk, width=self.level*3)
        #print "Level ", self.level, np.binary_repr(lmax_lk, width=self.level*3), np.binary_repr(lmax_rk, width=self.level*3)
        return lmax_lk, lmax_rk