DistanceModel.h

/*
 
MIT License
 
Copyright (c) 2017 FMI Open Development / Markus Peura, first.last@fmi.fi
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 
*/
/*
Part of Rack development has been done in the BALTRAD projects part-financed
by the European Union (European Regional Development Fund and European
Neighbourhood Partnership Instrument, Baltic Sea Region Programme 2007-2013)
*/
#ifndef DISTANCEMODEL_H_
#define DISTANCEMODEL_H_
 
#include <math.h>
 
#include "drain/util/BeanLike.h"
#include "drain/imageops/ImageOp.h"
 
#include "drain/UniTuple.h"
 
 
namespace drain
{
 
template <typename T>
class Bidirectional : public drain::UniTuple<T,2> {
public:
 
    T & forward;
    T & backward;
 
    Bidirectional(T forward=T(), T backward=T()) : forward(this->at(0)), backward(this->at(1)) {
        this->set(forward, backward);
    };
 
    Bidirectional(const Bidirectional & r) : forward(this->at(0)),  backward(this->at(1)) {
        this->set(r.forward, r.backward);
    };
 
    virtual inline
    void updateTuple(){
        if (isnan(backward))
            backward = forward;
    };
 
 
};
 
 
namespace image
{
 
 
class DistanceElement {
public:
 
    // Todo: sync with DistanceModel::float
    // typedef float float;
 
    const drain::Point2D<short int> diff;
 
    // Saves connection even with changing weights
    const float coeff;
 
    inline
    DistanceElement(short int di, short int dj, const float coeff) : diff(di,dj), coeff(coeff) {
    };
 
    inline
    DistanceElement(const DistanceElement & elem) : diff(elem.diff), coeff(elem.coeff) {
    };
 
    virtual
    ~DistanceElement(){
    };
 
 
};
 
inline
std::ostream & operator<<(std::ostream &ostr, const DistanceElement & d){
    //ostr.setf(std::ostream::showpos);
    ostr << std::showpos << d.diff << std::noshowpos << ": " << d.coeff;
    return ostr;
}
 
 
typedef std::vector<DistanceElement> DistanceNeighbourhood; // faster...
 
inline
std::ostream & operator<<(std::ostream &ostr, const DistanceNeighbourhood & chain){
    for (const DistanceElement & element: chain){
        ostr << element << '\n';
    }
    return ostr;
}
 
 
class DistanceModel : public BeanLike {
 
 
public:
 
    enum PIXEL_ADJACENCY {CONN_UNSET=0, CONN4=4, CONN8=8, KNIGHT=16};
 
    typedef PIXEL_ADJACENCY topol_t; // Needed? Consider topol_enum_t
 
 
    typedef drain::EnumFlagger<drain::SingleFlagger<PIXEL_ADJACENCY> > PixelAdjacencyFlagger;
    PixelAdjacencyFlagger pixelAdjacency;
 
    static
    const float nan_f; // = std::numeric_limits<float>::quiet_NaN();
 
    virtual ~DistanceModel(){};
 
    inline
    void setMax(float maxCodeValue){
        this->maxCodeValue = maxCodeValue;
    };
 
    inline
    float getMax() const {
        return maxCodeValue;
    };
 
 
    virtual 
    void setRadius(float horz, float vert=nan_f, float horzLeft=nan_f, float vertUp=nan_f) = 0;
 
    inline
    void setRadiusVerbatim(float horz, float vert=nan_f, float horzLeft=nan_f, float vertUp=nan_f){
        horzRadius.set(horz, horzLeft);
        vertRadius.set(vert, vertUp);
    };
 
    inline
    const Bidirectional<float> & getRadiusHorz() const {
        return horzRadius;
    }
 
    inline
    const Bidirectional<float> & getRadiusVert() const {
        return vertRadius;
    }
 
 
    virtual 
    void setDecrement(float horz, float vert = NAN, float horzRight = NAN, float vertUp = NAN) = 0; // , bool diag=true, bool knight=true) = 0;
 
    virtual
    DistanceElement getElement(short dx, short dy, bool forward=true) const = 0;
 
    void update();
 
    virtual
    void updateBean() const override;
 
    inline
    void setTopology(PIXEL_ADJACENCY topology){
        pixelAdjacency.set(topology);
        updateBean();
    };
 
    inline
    void setTopology(const std::string & topology){
        pixelAdjacency.set(topology);
        updateBean();
    };
 
 
 
    // static
    void createChain(DistanceNeighbourhood & chain, PIXEL_ADJACENCY topology = PIXEL_ADJACENCY::KNIGHT, bool forward=true) const;
 
    inline
    void createChain(DistanceNeighbourhood & chain, bool forward=true) const {
        createChain(chain, pixelAdjacency.getValue(), forward);
    }
 
    virtual
    float decrease(float value, float coeff) const = 0;
 
 
protected:
 
 
    DistanceModel(const std::string & name, const std::string & description = "") : BeanLike(name, description), horzRadius(11.0, nan_f), vertRadius(nan_f, nan_f) {
    // horzRadius(11.0, 12.0), vertRadius(-1.0, -1.0) {
    parameters.link("width",  horzRadius.tuple(), "pix").fillArray = true;
        parameters.link("height", vertRadius.tuple(), "pix").fillArray = true;
        parameters.link("topology", pixelAdjacencyStr = "16-CONNECTED", sprinter(EnumDict<DistanceModel::PIXEL_ADJACENCY>::dict.getKeys()).str());
        //drain::sprinter(drain::EnumDict<DataOrder::Oper>::dict.getKeys()).str()
        // ? update();
        setMax(255); // warning
        // drain::Logger mout(getImgLog(), __FUNCTION__, getName());
        // mout.warn(*this );
    };
 
    DistanceModel(const DistanceModel & dm) : BeanLike(dm), horzRadius(dm.horzRadius), vertRadius(dm.vertRadius){
        parameters.copyStruct(dm.getParameters(), dm, *this);
        // setTopology(dm.topology);
        setMax(dm.getMax()); // warning
    }
 
    mutable
    std::string pixelAdjacencyStr;  // number to string
 
 
    //  Horizontal distance(s); right and left steepness radii. Internal parameter applied upon initParams?
    drain::Bidirectional<float> horzRadius;
 
    //  Vertical distance(s); right and left steepness radii. Internal parameter applied upon initParams?
    drain::Bidirectional<float> vertRadius;
 
 
    drain::Bidirectional<float> horzDec;
 
    drain::Bidirectional<float> vertDec;
 
    float maxCodeValue;
 
 
 
};
 
 
}
}
    
#endif
// Drain