RadarDataPicker.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 RADAR_DATA_PICKER_H
#define RADAR_DATA_PICKER_H
 
 
#include <drain/TypeUtils.h>
#include <sstream>
 
 
#include <drain/image/Sampler.h>
#include <drain/image/AccumulatorGeo.h>
#include "data/Data.h"
 
// ##include "Geometry.h"
#include "RadarProj.h"
 
// // using namespace std;
 
namespace rack {
 
 
template <class OD>
class RadarDataPicker : public drain::image::SamplePicker {
 
public:
 
    RadarDataPicker(drain::ReferenceMap2<> & variableMap, const OD & odim) : drain::image::SamplePicker(variableMap), odim(odim) {
 
        variableMap.link("i", current_i = 0);
        variableMap.link("j", current_j = 0);
        variableMap.link("LON", lon = 0.0);
        variableMap.link("LAT", lat = 0.0);
        variableMap.link("X", x = 0.0);
        variableMap.link("Y", y = 0.0);
 
    }
 
    typedef SrcType<OD const> src_t;
 
    typedef PlainData<src_t> data_t;
 
    typedef DataSet<src_t> dataset_t;
 
    typedef std::map<std::string, const data_t &> map_t;
 
    // setPosition(i,j) in derived classes.
 
    // If returns true, also raw value should be stored.
    inline
    bool getValue(const data_t & data, double & value) const {
 
        value = data.data.template get<double>(this->current_i,this->current_j);
 
        return true;
 
        //if ((value != data.odim.nodata) && (value != data.odim.undetect)){
        /*
        if (data.odim.isValue(value)){
            value = data.odim.scaleForward(value);
            return true;
        }
        else {
            // Keep raw, maybe odd marker values of nodata/undetect!
            // value = 0.0;
            return false;
        }*/
    }
 
    inline
    bool handleValue(const data_t & data, double & value) const  {
        if (data.odim.isValue(value)){
            value = data.odim.scaleForward(value);
            return true;
        }
        else {
            // Keep raw, maybe odd marker values of nodata/undetect!
            // value = 0.0;
            return false;
        }
        return true;
    }
 
    void toStream(std::ostream &ostr = std::cout) const {
        // "RadarDataPicker "
        ostr << drain::TypeName<rack::RadarDataPicker<OD> >::name;
        ostr << this->width << "x" << this->height << "; " << "; " <<  odim << '\n';
    }
 
 
 
protected:
 
    mutable double x;
    mutable double y;
 
    mutable double lon;
    mutable double lat;
 
    const OD & odim;
 
 
};
 
template <class OD>
inline
std::ostream & operator<<(std::ostream &ostr, const RadarDataPicker<OD> & p){
    p.toStream(ostr);
    return ostr;
}
 
}
 
 
namespace rack {
 
class PolarDataPicker : public RadarDataPicker<PolarODIM> {
 
 
public:
 
 
    PolarDataPicker(drain::ReferenceMap2<> & variableMap, const PolarODIM & odim);
 
    virtual
    void setPosition(int i, int j) const;
 
    inline
    const RadarProj & getProjection() const {
        return proj;
    };
 
    /*
    virtual inline
    void writeHeader(char commentPrefix, std::ostream & ostr) const {   };
    */
 
    bool groundCoord = false;
 
 protected:
 
    //RadarProj4 proj;
    RadarProj proj;
 
    const double J2AZMDEG;
 
    // Elevation angle in radians
    const double eta;
 
    mutable double current_sin;
    mutable double current_cos;
    mutable double current_azm;
 
    mutable double current_range;
 
    mutable double current_height;
 
};
 
 
class CartesianDataPicker : public RadarDataPicker<CartesianODIM> {
 
public:
 
    CartesianDataPicker(drain::ReferenceMap2<> & variableMap, const CartesianODIM & odim);
 
    void setPosition(int i, int j) const;
 
    GeoFrame frame;
 
};
 
 
}  // rack::
 
namespace drain {
 
DRAIN_TYPENAME(rack::RadarDataPicker<rack::PolarODIM>);
DRAIN_TYPENAME(rack::RadarDataPicker<rack::CartesianODIM>);
 
} // Rack
 
 
#endif /* RADAR_DATA_PICKER_H */