Pixelization.h

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/*
 * 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_PIXELIZATION_H_
#define LSST_SPHGEOM_PIXELIZATION_H_


#include <string>

#include "RangeSet.h"


namespace lsst {
namespace sphgeom {

class Region;
class UnitVector3d;


class Pixelization {
public:
    virtual ~Pixelization() {}

    virtual RangeSet universe() const = 0;

    virtual std::unique_ptr<Region> pixel(uint64_t i) const = 0;

    virtual uint64_t index(UnitVector3d const & v) const = 0;

    virtual std::string toString(uint64_t i) const = 0;

    RangeSet envelope(Region const & r, size_t maxRanges = 0) const {
        return _envelope(r, maxRanges);
    }

    RangeSet interior(Region const & r, size_t maxRanges = 0) const {
        return _interior(r, maxRanges);
    }

private:
    virtual RangeSet _envelope(Region const & r, size_t maxRanges) const = 0;
    virtual RangeSet _interior(Region const & r, size_t maxRanges) const = 0;
};

}} // namespace lsst::sphgeom

#endif // LSST_SPHGEOM_PIXELIZATION_H_