Associations.h

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// -*- LSST-C++ -*-
/*
 * This file is part of jointcal.
 *
 * Developed for the LSST Data Management System.
 * This product includes software developed by the LSST Project
 * (https://www.lsst.org).
 * See the COPYRIGHT file at the top-level directory of this distribution
 * for details of code ownership.
 *
 * 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 GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef LSST_JOINTCAL_ASSOCIATIONS_H
#define LSST_JOINTCAL_ASSOCIATIONS_H

#include <string>
#include <iostream>
#include <list>

#include "lsst/afw/table/Source.h"
#include "lsst/afw/geom/SkyWcs.h"
#include "lsst/afw/image/Calib.h"
#include "lsst/afw/image/VisitInfo.h"
#include "lsst/daf/base/PropertySet.h"
#include "lsst/geom/Box.h"
#include "lsst/sphgeom/Circle.h"

#include "lsst/jointcal/RefStar.h"
#include "lsst/jointcal/FittedStar.h"
#include "lsst/jointcal/CcdImage.h"
#include "lsst/jointcal/Point.h"
#include "lsst/jointcal/JointcalControl.h"

#include "lsst/afw/table/SortedCatalog.h"

namespace lsst {
namespace jointcal {

using RefFluxMapType = std::map<std::string, std::vector<double>>;

class Associations {
public:
    CcdImageList ccdImageList;      // the catalog handlers
    RefStarList refStarList;        // e.g. GAIA or SDSS reference stars
    FittedStarList fittedStarList;  // stars that are going to be fitted

    // These are strictly speaking not needed anymore (after DM-4043),
    // but keeping them seems cleaner then exposing the lists themselves.
    size_t refStarListSize() { return refStarList.size(); }
    size_t fittedStarListSize() { return fittedStarList.size(); }

    Associations()
            : _commonTangentPoint(Point(std::numeric_limits<double>::quiet_NaN(),
                                        std::numeric_limits<double>::quiet_NaN())) {}

    Associations(CcdImageList const &imageList)
            : ccdImageList(imageList),
              _commonTangentPoint(Point(std::numeric_limits<double>::quiet_NaN(),
                                        std::numeric_limits<double>::quiet_NaN())) {}

    Associations(Associations const &) = delete;
    Associations(Associations &&) = delete;
    Associations &operator=(Associations const &) = delete;
    Associations &operator=(Associations &&) = delete;

    void computeCommonTangentPoint();

    void setCommonTangentPoint(lsst::geom::Point2D const &commonTangentPoint);

    Point getCommonTangentPoint() const { return _commonTangentPoint; }

    void createCcdImage(afw::table::SourceCatalog &catalog, std::shared_ptr<lsst::afw::geom::SkyWcs> wcs,
                        std::shared_ptr<lsst::afw::image::VisitInfo> visitInfo,
                        lsst::geom::Box2I const &bbox, std::string const &filter,
                        std::shared_ptr<afw::image::PhotoCalib> photoCalib,
                        std::shared_ptr<afw::cameraGeom::Detector> detector, int visit, int ccd,
                        lsst::jointcal::JointcalControl const &control);

    void addCcdImage(std::shared_ptr<CcdImage> const ccdImage) { ccdImageList.push_back(ccdImage); }

    void associateCatalogs(const double matchCutInArcsec = 0, const bool useFittedList = false,
                           const bool enlargeFittedList = true);

    void collectRefStars(afw::table::SimpleCatalog &refCat, geom::Angle matchCut,
                         std::string const &fluxField, float refCoordinateErr, bool rejectBadFluxes = false);

    void deprojectFittedStars();

/* If Color is "g-i", then the color is assigned from columns "g" and "i" of the colored catalog. */
#ifdef TODO
    void setFittedStarColors(std::string const &dicStarListName, std::string const &color,
                             double matchCutArcSec);
#endif

    void prepareFittedStars(int minMeasurements);

    CcdImageList const &getCcdImageList() const { return ccdImageList; }

    unsigned getNFilters() const { return 1; }

    lsst::sphgeom::Circle computeBoundingCircle() const;

    int nCcdImagesValidForFit() const;

    size_t nFittedStarsWithAssociatedRefStar() const;

private:
    void associateRefStars(double matchCutInArcsec, const AstrometryTransform *transform);

    void assignMags();

    void selectFittedStars(int minMeasurements);

    void normalizeFittedStars() const;

    Point _commonTangentPoint;
};

}  // namespace jointcal
}  // namespace lsst
#endif  // LSST_JOINTCAL_ASSOCIATIONS_H