ReducedShear.h

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

/*
 * LSST Data Management System
 * Copyright 2008, 2009, 2010 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
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 *
 * 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.
 *
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#ifndef LSST_AFW_GEOM_ELLIPSES_ReducedShear_h_INCLUDED
#define LSST_AFW_GEOM_ELLIPSES_ReducedShear_h_INCLUDED

#include "lsst/afw/geom/ellipses/EllipticityBase.h"

namespace lsst {
namespace afw {
namespace geom {
namespace ellipses {

class Distortion;

class ConformalShear;

class ReducedShear : public detail::EllipticityBase {
public:
    explicit ReducedShear(std::complex<double> const& complex) : detail::EllipticityBase(complex) {}

    explicit ReducedShear(double e1 = 0.0, double e2 = 0.0) : detail::EllipticityBase(e1, e2) {}

    ReducedShear(ReducedShear const& other) : detail::EllipticityBase(other.getComplex()) {}
    // Delegate to copy-constructor for backwards compatibility
    ReducedShear(ReducedShear&& other) : ReducedShear(other) {}
    ~ReducedShear() = default;

    explicit ReducedShear(Distortion const& other) { this->operator=(other); }

    explicit ReducedShear(ConformalShear const& other) { this->operator=(other); }

    ReducedShear& operator=(ReducedShear const& other) {
        _complex = other._complex;
        return *this;
    }
    // Delegate to copy-assignment for backwards compatibility
    ReducedShear& operator=(ReducedShear&& other) { return *this = other; }

    ReducedShear& operator=(Distortion const& other);

    ReducedShear& operator=(ConformalShear const& other);

    Jacobian dAssign(ReducedShear const& other) {
        _complex = other._complex;
        return Jacobian::Identity();
    }

    Jacobian dAssign(Distortion const& other);

    Jacobian dAssign(ConformalShear const& other);

    double getAxisRatio() const;

    void normalize() {}

    static std::string getName() { return "ReducedShear"; }
};
}  // namespace ellipses
}  // namespace geom
}  // namespace afw
}  // namespace lsst

#endif  // !LSST_AFW_GEOM_ELLIPSES_ReducedShear_h_INCLUDED