_spatialCell.py

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# This file is part of afw.
#
# Developed for the LSST Data Management System.
# This product includes software developed by the LSST Project
# (https://www.lsst.org).
# See the COPYRIGHT file at the top-level directory of this distribution
# for details of code ownership.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
from lsst.pex.exceptions import NotFoundError
from ._math import SpatialCellCandidateIterator, SpatialCell
 
__all__ = []  # import this module only for its side effects
 
 
def spatialCellCandidateIter(self):
    while True:
        try:
            yield self.__deref__()
        except NotFoundError:
            return
        self.__incr__()
 
 
SpatialCellCandidateIterator.__iter__ = spatialCellCandidateIter
 
 
def spatialCellIter(self):
    return self.begin().__iter__()
 
 
SpatialCell.__iter__ = spatialCellIter
 
 
def spatialCellGetitem(self, idx):
    idx = int(idx)
    num_cells = len(self)
    if idx < -num_cells or idx >= num_cells:
        raise IndexError("idx={} < -{} or >= {})".format(idx,
                                                         num_cells, num_cells))
    if idx < 0:
        idx += num_cells
    for i, cell in enumerate(self):
        if i >= idx:
            return cell
 
 
SpatialCell.__getitem__ = spatialCellGetitem