WarpedPsf.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
 * (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/>.
 */

#include "lsst/afw/geom/Point.h"
#include "lsst/afw/geom/Extent.h"
#include "lsst/afw/geom/XYTransform.h"
#include "lsst/afw/math/warpExposure.h"
#include "lsst/meas/algorithms/ImagePsf.h"

#ifndef LSST_AFW_DETECTION_WARPEDPSF_H
#define LSST_AFW_DETECTION_WARPEDPSF_H

namespace lsst { namespace meas { namespace algorithms {

class WarpedPsf : public ImagePsf {
public:

    WarpedPsf(
        CONST_PTR(afw::detection::Psf) undistortedPsf,
        CONST_PTR(afw::geom::XYTransform) distortion,
        CONST_PTR(afw::math::WarpingControl) control
        );
    WarpedPsf(
        CONST_PTR(afw::detection::Psf) undistortedPsf,
        CONST_PTR(afw::geom::XYTransform) distortion,
        std::string const& kernelName="lanczos3",
        unsigned int cache=10000
        );

    virtual afw::geom::Point2D getAveragePosition() const;

    virtual PTR(afw::detection::Psf) clone() const;

protected:

    virtual PTR(afw::detection::Psf::Image) doComputeKernelImage(
        afw::geom::Point2D const & position, afw::image::Color const & color
    ) const;

protected:
    PTR(afw::detection::Psf const) _undistortedPsf;
    PTR(afw::geom::XYTransform const) _distortion;

private:
    void _init();
    CONST_PTR(afw::math::WarpingControl) _warpingControl;

    virtual afw::geom::Box2I doComputeBBox(
        afw::geom::Point2D const & position,
        afw::image::Color const & color
    ) const;
};

}}} // namespace lsst::meas::algorithms

#endif  // LSST_MEAS_ALGORITHMS_WARPEDPSF_H