Distortion.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
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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#ifndef LSST_AFW_GEOM_ELLIPSES_Distortion_h_INCLUDED
#define LSST_AFW_GEOM_ELLIPSES_Distortion_h_INCLUDED

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

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

class ConformalShear;
class ReducedShear;

class Distortion : public detail::EllipticityBase {
public:

    explicit Distortion(std::complex<double> const & complex) : detail::EllipticityBase(complex) {}

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

    Distortion(Distortion const & other) : detail::EllipticityBase(other.getComplex()) {}

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

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

    Distortion & operator=(Distortion const & other) {
        _complex = other._complex;
        return *this;
    }

    Distortion & operator=(ConformalShear const & other);

    Distortion & operator=(ReducedShear const & other);

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

    Jacobian dAssign(ConformalShear const & other);

    Jacobian dAssign(ReducedShear const & other);

    double getAxisRatio() const;

    void normalize();

    static std::string getName() { return "Distortion"; }

};

}}}} // namespace lsst::afw::geom::ellipses

#endif // !LSST_AFW_GEOM_ELLIPSES_Distortion_h_INCLUDED