chunker.cc

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/*
 * LSST Data Management System
 * See COPYRIGHT file at the top of the source tree.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * 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 LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <https://www.lsstcorp.org/LegalNotices/>.
 */
#include "pybind11/pybind11.h"
#include "pybind11/stl.h"

#include <memory>

#include "lsst/sphgeom/Chunker.h"

namespace py = pybind11;
using namespace pybind11::literals;

namespace lsst {
namespace sphgeom {
namespace {

py::str toString(Chunker const & self) {
    return py::str("Chunker({!s}, {!s})")
            .format(self.getNumStripes(), self.getNumSubStripesPerStripe());
}


PYBIND11_MODULE(chunker, mod) {
    py::class_<Chunker, std::shared_ptr<Chunker>> cls(mod, "Chunker");

    cls.def(py::init<int32_t, int32_t>(), "numStripes"_a,
            "numSubStripesPerStripe"_a);

    cls.def("__eq__", &Chunker::operator==, py::is_operator());
    cls.def("__ne__", &Chunker::operator!=, py::is_operator());

    cls.def_property_readonly("numStripes", &Chunker::getNumStripes);
    cls.def_property_readonly("numSubStripesPerStripe",
                              &Chunker::getNumSubStripesPerStripe);

    cls.def("getChunksIntersecting", &Chunker::getChunksIntersecting,
            "region"_a);
    cls.def("getSubChunksIntersecting",
            [](Chunker const &self, Region const &region) {
                py::list results;
                for (auto const & sc: self.getSubChunksIntersecting(region)) {
                    results.append(py::make_tuple(sc.chunkId, sc.subChunkIds));
                }
                return results;
            },
            "region"_a);
    cls.def("getAllChunks", &Chunker::getAllChunks);
    cls.def("getAllSubChunks", &Chunker::getAllSubChunks, "chunkId"_a);

    cls.def("__str__", &toString);
    cls.def("__repr__", &toString);

    cls.def("__reduce__", [cls](Chunker const &self) {
        return py::make_tuple(cls,
                              py::make_tuple(self.getNumStripes(),
                                             self.getNumSubStripesPerStripe()));
    });
}

}  // <anonymous>
}  // sphgeom
}  // lsst