simulator/bbox.cpp (5bca604) - libetherpix · BlinkenArea

bbox.cpp

/*
 * EtherPix simulator
 *
 * Copyright 2017 Stefan Schuermans <stefan schuermans info>
 *
 * This program 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, version 3 of the License.
 *
 *
 * This program 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 Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "bbox.h"

/// constructor
BBox::BBox():
  m_init(false),
  m_x_min(0.0),
  m_x_max(0.0),
  m_y_min(0.0),
  m_y_max(0.0)
{
}

/// reset bounding box (de-initialize)
void BBox::reset()
{
  m_init = false;
  m_x_min = 0.0;
  m_x_max = 0.0;
  m_y_min = 0.0;
  m_y_max = 0.0;
}

// add a point to the bounding box
void BBox::add(double x, double y)
{
  if (m_init) {
    if (x < m_x_min) m_x_min = x;
    if (x > m_x_max) m_x_max = x;
    if (y < m_y_min) m_y_min = y;
    if (y > m_y_max) m_y_max = y;
  } else {
    m_init = true;
    m_x_min = x;
    m_x_max = x;
    m_y_min = y;
    m_y_max = y;
  }
}

/**
 * @brief get coordinates
 * @return whether coordinates were there
 */
bool BBox::get(double &x_min, double &x_max,
               double &y_min, double &y_max) const
{
  if (m_init) {
    x_min = m_x_min;
    x_max = m_x_max;
    y_min = m_y_min;
    y_max = m_y_max;
    return true;
  } else {
    return false;
  }
}

libetherpix

implement drawing pixels