/*
 * (C) Copyright 1996-2016 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/*! \file IsoHelper.h
    \brief Definition of the Template class IsoHelper.

    Magics Team - ECMWF 2010

    Started: Thu 11-Mar-2010

    Changes:

*/

#ifndef IsoHelper_H
#define IsoHelper_H

#include "magics.h"

#include "IntervalMap.h"
#include "Polyline.h"

#include <condition_variable>
#include <mutex>

namespace magics {


struct IsoData {
public:
    IsoData() { more_ = true; }
    deque<std::pair<double, pair<std::pair<double, double>, pair<double, double> > > > segments_;
    // deque<Shape*> shapes_;

    bool more_;

    std::mutex mutex_;
    std::condition_variable cond_;
};


class IsoHelper {
public:
    IsoHelper(int, vector<Polyline*>&, IsoData& data);
    void run();


protected:
    //! Method to print string about this class on to a stream of type ostream (virtual).
    void print(ostream&) const;


    int n_;

    vector<Polyline*>& lines_;
    map<double, vector<Polyline*> > helpers_;


    double level_;
    IsoData& data_;


    // void reduce(vector<Shape*>&);
    void concatenate_back(vector<Polyline*>& lines, Polyline* poly);
    void concatenate_front(vector<Polyline*>& lines, Polyline* poly);

private:
    //! Copy constructor - No copy allowed
    IsoHelper(const IsoHelper&);
    //! Overloaded << operator to copy - No copy allowed
    IsoHelper& operator=(const IsoHelper&);

    // -- Friends
    //! Overloaded << operator to call print().
    friend ostream& operator<<(ostream& s, const IsoHelper& p) {
        p.print(s);
        return s;
    }
};


}  // namespace magics
#endif
