MapBox.cc

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/*
 * LSST Data Management System
 * Copyright 2017 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 <vector>
 
#include "ndarray.h"
 
#include "astshim/base.h"
#include "astshim/detail/utils.h"
#include "astshim/MapBox.h"
#include "astshim/Mapping.h"
 
namespace ast {
 
MapBox::MapBox(Mapping const& map, std::vector<double> const& lbnd, std::vector<double> const& ubnd,
               int minOutCoord, int maxOutCoord)
        : lbndIn(lbnd),
          ubndIn(ubnd),
          minOutCoord(minOutCoord),
          maxOutCoord(maxOutCoord),  // if 0 then _compute will set it to # of outputs
          lbndOut(),
          ubndOut(),
          xl(),
          xu() {
    _compute(map, lbnd, ubnd, minOutCoord, maxOutCoord);
}
 
void MapBox::_compute(Mapping const& map, std::vector<double> const& lbnd, std::vector<double> const& ubnd,
                      int minOutCoord, int maxOutCoord) {
    int const nin = map.getNIn();
    int const nout = map.getNOut();
    detail::assertEqual(lbnd.size(), "lbnd.size()", static_cast<std::size_t>(nin), "NIn");
    detail::assertEqual(ubnd.size(), "ubnd.size()", static_cast<std::size_t>(nin), "NIn");
    if (maxOutCoord == 0) {
        maxOutCoord = nout;
        this->maxOutCoord = maxOutCoord;  // DM-10008
    } else if ((maxOutCoord < 0) || (maxOutCoord > nout)) {
        std::ostringstream os;
        os << "maxOutCoord = " << maxOutCoord << " not in range [1, " << nout << "], or 0 for all remaining";
        throw std::invalid_argument(os.str());
    }
    if ((minOutCoord < 0) || (minOutCoord > maxOutCoord)) {
        std::ostringstream os;
        os << "minOutCoord = " << minOutCoord << " not in range [1, " << maxOutCoord << "]";
        throw std::invalid_argument(os.str());
    }
    int const npoints = 1 + maxOutCoord - minOutCoord;
    lbndOut.reserve(npoints);
    ubndOut.reserve(npoints);
    xl = ndarray::allocate(ndarray::makeVector(npoints, nout));
    xu = ndarray::allocate(ndarray::makeVector(npoints, nout));
    bool const forward = true;
    double lbndOut_i;
    double ubndOut_i;
    for (int i = 0, outcoord = minOutCoord; outcoord <= maxOutCoord; ++i, ++outcoord) {
        auto xlrow = xl[i];
        auto xurow = xu[i];
        astMapBox(map.getRawPtr(), lbnd.data(), ubnd.data(), forward, outcoord, &lbndOut_i, &ubndOut_i,
                  xlrow.getData(), xurow.getData());
        assertOK();
        lbndOut.push_back(lbndOut_i);
        ubndOut.push_back(ubndOut_i);
    }
 
    // convert AST__BAD to nan
    detail::astBadToNan(lbndOut);
    detail::astBadToNan(ubndOut);
    detail::astBadToNan(xl);
    detail::astBadToNan(xu);
}
 
}  // namespace ast