Region.cc

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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/>.
 */


#include <stdexcept>

#include "lsst/sphgeom/Region.h"

#include "lsst/sphgeom/Box.h"
#include "lsst/sphgeom/Circle.h"
#include "lsst/sphgeom/ConvexPolygon.h"
#include "lsst/sphgeom/Ellipse.h"


namespace lsst {
namespace sphgeom {

std::unique_ptr<Region> Region::decode(uint8_t const * buffer, size_t n) {
    if (buffer == nullptr || n == 0) {
        throw std::runtime_error("Byte-string is not an encoded Region");
    }
    uint8_t type = *buffer;
    if (type == Box::TYPE_CODE) {
        return Box::decode(buffer, n);
    } else if (type == Circle::TYPE_CODE) {
        return Circle::decode(buffer, n);
    } else if (type == ConvexPolygon::TYPE_CODE) {
        return ConvexPolygon::decode(buffer, n);
    } else if (type == Ellipse::TYPE_CODE) {
        return Ellipse::decode(buffer, n);
    }
    throw std::runtime_error("Byte-string is not an encoded Region");
}

}} // namespace lsst:sphgeom