PointMatchTriplet.cpp

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#include "PointMatchTriplet.h"
 
PointMatchTriplet::PointMatchTriplet(int x,
                                     int y,
                                     double correlation) :
  m_x (x),
  m_y (y),
  m_correlation (correlation)
{
}
 
double PointMatchTriplet::correlation () const
{
  return m_correlation;
}
 
bool PointMatchTriplet::operator<(const PointMatchTriplet &other) const
{
  // Sorting algorithm wants to sort by ascending correlation, but we want to sort by descending correlation. We
  // compensate by comparing correlations numerically and flipping the result
 
  bool isLess = false;
 
  if (m_correlation == other.correlation ()) {
 
    // To reduce jumping around, we prefer points on the left when the correlations are equal
    isLess = (m_x < other.x());
 
  } else {
 
    isLess = !(m_correlation < other.correlation ());
 
  }
 
  return isLess;
}
 
QPoint PointMatchTriplet::point() const
{
  return QPoint (m_x,
                 m_y);
}
 
int PointMatchTriplet::x() const
{
  return m_x;
}
 
int PointMatchTriplet::y() const
{
  return m_y;
}