blender-archive/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp

/*
 * 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; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

/** \file
 * \ingroup freestyle
 * \brief Functions taking 0D input
 */

#include "AdvancedFunctions0D.h"
#include "Canvas.h"

#include "../view_map/Functions0D.h"
#include "../view_map/SteerableViewMap.h"

namespace Freestyle {

namespace Functions0D {

int DensityF0D::operator()(Interface0DIterator &iter)
{
  Canvas *canvas = Canvas::getInstance();
  int bound = _filter.getBound();

  if ((iter->getProjectedX() - bound < 0) || (iter->getProjectedX() + bound > canvas->width()) ||
      (iter->getProjectedY() - bound < 0) || (iter->getProjectedY() + bound > canvas->height())) {
    result = 0.0;
    return 0;
  }

  RGBImage image;
  canvas->readColorPixels((int)iter->getProjectedX() - bound,
                          (int)iter->getProjectedY() - bound,
                          _filter.maskSize(),
                          _filter.maskSize(),
                          image);
  result = _filter.getSmoothedPixel<RGBImage>(
      &image, (int)iter->getProjectedX(), (int)iter->getProjectedY());

  return 0;
}

int LocalAverageDepthF0D::operator()(Interface0DIterator &iter)
{
  Canvas *iViewer = Canvas::getInstance();
  int bound = _filter.getBound();

  if ((iter->getProjectedX() - bound < 0) || (iter->getProjectedX() + bound > iViewer->width()) ||
      (iter->getProjectedY() - bound < 0) || (iter->getProjectedY() + bound > iViewer->height())) {
    result = 0.0;
    return 0;
  }

  GrayImage image;
  iViewer->readDepthPixels((int)iter->getProjectedX() - bound,
                           (int)iter->getProjectedY() - bound,
                           _filter.maskSize(),
                           _filter.maskSize(),
                           image);
  result = _filter.getSmoothedPixel(
      &image, (int)iter->getProjectedX(), (int)iter->getProjectedY());

  return 0;
}

int ReadMapPixelF0D::operator()(Interface0DIterator &iter)
{
  Canvas *canvas = Canvas::getInstance();
  result = canvas->readMapPixel(
      _mapName, _level, (int)iter->getProjectedX(), (int)iter->getProjectedY());
  return 0;
}

int ReadSteerableViewMapPixelF0D::operator()(Interface0DIterator &iter)
{
  SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
  result = svm->readSteerableViewMapPixel(
      _orientation, _level, (int)iter->getProjectedX(), (int)iter->getProjectedY());
  return 0;
}

int ReadCompleteViewMapPixelF0D::operator()(Interface0DIterator &iter)
{
  SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
  result = svm->readCompleteViewMapPixel(
      _level, (int)iter->getProjectedX(), (int)iter->getProjectedY());
  return 0;
}

int GetViewMapGradientNormF0D::operator()(Interface0DIterator &iter)
{
  SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
  float pxy = svm->readCompleteViewMapPixel(
      _level, (int)iter->getProjectedX(), (int)iter->getProjectedY());
  float gx = svm->readCompleteViewMapPixel(
                 _level, (int)iter->getProjectedX() + _step, (int)iter->getProjectedY()) -
             pxy;
  float gy = svm->readCompleteViewMapPixel(
                 _level, (int)iter->getProjectedX(), (int)iter->getProjectedY() + _step) -
             pxy;
  result = Vec2f(gx, gy).norm();
  return 0;
}

}  // end of namespace Functions0D

} /* namespace Freestyle */