Q3cPixelization.h

Go to the documentation of this file.

/*
 * LSST Data Management System
 * Copyright 2016 AURA/LSST.
 *
 * 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/>.
 */

#ifndef LSST_SPHGEOM_Q3CPIXELIZATION_H_
#define LSST_SPHGEOM_Q3CPIXELIZATION_H_


#include <cstdint>
#include <vector>

#include "ConvexPolygon.h"
#include "Pixelization.h"


namespace lsst {
namespace sphgeom {

class Q3cPixelization : public Pixelization {
public:
    static constexpr int MAX_LEVEL = 30;

    explicit Q3cPixelization(int level);

    int getLevel() const { return _level; }

    ConvexPolygon quad(uint64_t i) const;

    std::vector<uint64_t> neighborhood(uint64_t i) const;

    RangeSet universe() const override {
        return RangeSet(0, static_cast<uint64_t>(6) << 2 * _level);
    }

    std::unique_ptr<Region> pixel(uint64_t i) const override;

    uint64_t index(UnitVector3d const & v) const override;

    std::string toString(uint64_t i) const override;

private:
    int _level;

    RangeSet _envelope(Region const & r, size_t maxRanges) const override;
    RangeSet _interior(Region const & r, size_t maxRanges) const override;
};

}} // namespace lsst::sphgeom

#endif // LSST_SPHGEOM_Q3CPIXELIZATION_H_