/*********************************************************************/
/*                                                                   */
/* Copyright 2022-2023 Rémi Synave - remi.synave@univ-littoral.fr    */
/*                                                                   */
/* This file is part of DSL.                                         */
/* This software uses Qt to build the Graphical User Interface       */
/* https://www.qt.io/                                                */
/*                                                                   */
/* DSL 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.                            */
/*                                                                   */
/* DSL 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 GNU General Public License */
/* along with DSL. If not, see <http://www.gnu.org/licenses/>.       */
/*                                                                   */
/*********************************************************************/

#ifndef STRENGTHLINE_HPP
#define STRENGTHLINE_HPP

#include <iostream>
#include <cmath>

#include <QPoint>
#include <QImage>


class StrengthLine
{
private:
  QPoint *p1 = NULL, *p2 = NULL;

  std::pair < float, float > equation () const;

public:
  StrengthLine (double ax = 0.0, double ay = 0.0, double bx = 1.0, double by = 1.0);
  StrengthLine (QPoint * p1 = new QPoint (0, 0), QPoint * p2 =
		new QPoint (1, 1));
  QPoint* getP1() const;
  QPoint* getP2() const;
  std::pair < QPoint *, QPoint * > toDraw (QImage * img) const;
  std::pair < QPoint *, QPoint * > toDraw (int imgWidth, int imgHeight) const;
  std::pair < QPoint *, QPoint * > interpolateToEdge (QImage * img) const;
  std::pair < QPoint *, QPoint * > interpolateToEdge (int imgWidth, int imgHeight) const;
  float ea_score(const StrengthLine *sl, double imgWidth, double imgHeight) const;
  float distance(const StrengthLine *sl, double imgWidth, double imgHeight) const;

  static StrengthLine* getRandomLine (QImage * img);
  static StrengthLine* getRandomLine (int width, int height);

  friend std::ostream& operator<<(std::ostream&, const StrengthLine);
};

#endif