wcsUtils.h

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/*
 * LSST Data Management System
 * Copyright 2017 LSST Corporation.
 *
 * 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 <http://www.lsstcorp.org/LegalNotices/>.
 */
 
#ifndef LSST_AFW_GEOM_DETAILS_WCSUTILS_H
#define LSST_AFW_GEOM_DETAILS_WCSUTILS_H
 
#include <memory>
#include <string>
 
#include "Eigen/Core"
 
#include "lsst/daf/base.h"
#include "lsst/geom/Point.h"
#include "lsst/afw/geom/SkyWcs.h"
 
namespace lsst {
namespace afw {
namespace geom {

std::shared_ptr<daf::base::PropertyList> createTrivialWcsMetadata(std::string const& wcsName,
                                                                  lsst::geom::Point2I const& xy0);

void deleteBasicWcsMetadata(daf::base::PropertySet& metadata, std::string const& wcsName);

Eigen::Matrix2d getCdMatrixFromMetadata(daf::base::PropertySet& metadata);

lsst::geom::Point2I getImageXY0FromMetadata(daf::base::PropertySet& metadata, std::string const& wcsName,
                                            bool strip = false);

Eigen::MatrixXd getSipMatrixFromMetadata(daf::base::PropertySet const& metadata, std::string const& name);

bool hasSipMatrix(daf::base::PropertySet const& metadata, std::string const& name);

std::shared_ptr<daf::base::PropertyList> makeSipMatrixMetadata(Eigen::MatrixXd const& matrix,
                                                               std::string const& name);

std::shared_ptr<daf::base::PropertyList> makeSimpleWcsMetadata(lsst::geom::Point2D const& crpix,
                                                               lsst::geom::SpherePoint const& crval,
                                                               Eigen::Matrix2d const& cdMatrix,
                                                               std::string const& projection = "TAN");

std::shared_ptr<daf::base::PropertyList> makeTanSipMetadata(lsst::geom::Point2D const& crpix,
                                                            lsst::geom::SpherePoint const& crval,
                                                            Eigen::Matrix2d const& cdMatrix,
                                                            Eigen::MatrixXd const& sipA,
                                                            Eigen::MatrixXd const& sipB);

std::shared_ptr<daf::base::PropertyList> makeTanSipMetadata(
        lsst::geom::Point2D const& crpix, lsst::geom::SpherePoint const& crval,
        Eigen::Matrix2d const& cdMatrix, Eigen::MatrixXd const& sipA, Eigen::MatrixXd const& sipB,
        Eigen::MatrixXd const& sipAp, Eigen::MatrixXd const& sipBp);
 
void stripWcsMetadata(daf::base::PropertySet &metadata);
 
}  // namespace geom
}  // namespace afw
}  // namespace lsst
 
#endif  // LSST_AFW_GEOM_DETAILS_WCSUTILS_H