SeparableXYTransform.h

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// -*- lsst-c++ -*-

/*
 * LSST Data Management System
 * Copyright 2015 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/>.
 */

/*
 * Class representing a 2D transform for which the pixel
 * distortions in the x- and y-directions are separable.
 */

#ifndef LSST_AFW_GEOM_SEPARABLEXYTRANSFORM_H
#define LSST_AFW_GEOM_SEPARABLEXYTRANSFORM_H

#include "lsst/afw/geom/XYTransform.h"

namespace lsst {
namespace afw {
namespace geom {

class Functor;

class SeparableXYTransform : public XYTransform {
public:
    SeparableXYTransform(Functor const& xfunctor, Functor const& yfunctor);

    SeparableXYTransform(SeparableXYTransform const&);
    SeparableXYTransform(SeparableXYTransform&&);
    SeparableXYTransform& operator=(SeparableXYTransform const&);
    SeparableXYTransform& operator=(SeparableXYTransform&&);

    virtual ~SeparableXYTransform() = default;

    virtual std::shared_ptr<XYTransform> clone() const;

    virtual Point2D forwardTransform(Point2D const& point) const;

    virtual Point2D reverseTransform(Point2D const& point) const;

    Functor const& getXfunctor() const;

    Functor const& getYfunctor() const;

private:
    std::shared_ptr<Functor> _xfunctor;
    std::shared_ptr<Functor> _yfunctor;
};

}  // namespace geom
}  // namespace af
}  // namespace lsst

#endif  // LSST_AFW_GEOM_SEPARABLEXYTRANSFORM_H