HeavyFootprint.h

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/*
 * 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/>.
 */
 
#if !defined(LSST_DETECTION_HEAVY_FOOTPRINT_H)
#define LSST_DETECTION_HEAVY_FOOTPRINT_H
/*
 * Represent a set of pixels of an arbitrary shape and size, including values
 * for those pixels; a HeavyFootprint is a Footprint that also not only a
 * description of a region, but values within that region.
 */
#include <algorithm>
#include <list>
#include <cmath>
#include <memory>
#include "lsst/afw/detection/Footprint.h"
 
namespace lsst {
namespace afw {
namespace detection {
 
class HeavyFootprintCtrl;

template <typename ImagePixelT, typename MaskPixelT = lsst::afw::image::MaskPixel,
          typename VariancePixelT = lsst::afw::image::VariancePixel>
class HeavyFootprint
        : public afw::table::io::PersistableFacade<HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> >,
          public Footprint {
public:
    explicit HeavyFootprint(
            Footprint const& foot,
            lsst::afw::image::MaskedImage<ImagePixelT, MaskPixelT, VariancePixelT> const& mimage,
            HeavyFootprintCtrl const* ctrl = nullptr);

    explicit HeavyFootprint(Footprint const& foot, HeavyFootprintCtrl const* ctrl = nullptr);

    HeavyFootprint() = default;
    ~HeavyFootprint() override = default;
 
    HeavyFootprint(HeavyFootprint const& other) = default;
    HeavyFootprint(HeavyFootprint&& other) = default;
 
    HeavyFootprint& operator=(HeavyFootprint const&) = default;
    HeavyFootprint& operator=(HeavyFootprint&&) = default;

    bool isHeavy() const override { return true; }

    void insert(lsst::afw::image::MaskedImage<ImagePixelT, MaskPixelT, VariancePixelT>& mimage) const;

    void insert(lsst::afw::image::Image<ImagePixelT>& image) const;
 
    ndarray::Array<ImagePixelT, 1, 1> getImageArray() { return _image; }
    ndarray::Array<MaskPixelT, 1, 1> getMaskArray() { return _mask; }
    ndarray::Array<VariancePixelT, 1, 1> getVarianceArray() { return _variance; }
 
    ndarray::Array<ImagePixelT const, 1, 1> getImageArray() const { return _image; }
    ndarray::Array<MaskPixelT const, 1, 1> getMaskArray() const { return _mask; }
    ndarray::Array<VariancePixelT const, 1, 1> getVarianceArray() const { return _variance; }
 
    /* Returns the OR of all the mask pixels held in this HeavyFootprint. */
    MaskPixelT getMaskBitsSet() const {
        MaskPixelT maskbits = 0;
        for (typename ndarray::Array<MaskPixelT, 1, 1>::Iterator i = _mask.begin(); i != _mask.end(); ++i) {
            maskbits |= *i;
        }
        return maskbits;
    }

    double dot(HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> const& other) const;
 
protected:
    class Factory;  // factory class used for persistence, public only so we can instantiate it in .cc file
 
    std::string getPersistenceName() const override;
 
    void write(OutputArchiveHandle& handle) const override;
 
private:
    ndarray::Array<ImagePixelT, 1, 1> _image;
    ndarray::Array<MaskPixelT, 1, 1> _mask;
    ndarray::Array<VariancePixelT, 1, 1> _variance;
};

template <typename ImagePixelT, typename MaskPixelT, typename VariancePixelT>
HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> makeHeavyFootprint(
        Footprint const& foot,
        lsst::afw::image::MaskedImage<ImagePixelT, MaskPixelT, VariancePixelT> const& img,
        HeavyFootprintCtrl const* ctrl = nullptr) {
    return HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT>(foot, img, ctrl);
}

template <typename ImagePixelT, typename MaskPixelT, typename VariancePixelT>
std::shared_ptr<HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> > mergeHeavyFootprints(
        HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> const& h1,
        HeavyFootprint<ImagePixelT, MaskPixelT, VariancePixelT> const& h2);
}  // namespace detection
}  // namespace afw
}  // namespace lsst
 
#endif