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/*
* This file is part of Chalk
*
* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
*
* 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 2 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 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.
*/
#include "kis_perspectivetransform_worker.h"
#include "kis_iterators_pixel.h"
#include "kis_paint_device.h"
#include "kis_perspective_math.h"
#include "kis_progress_display_interface.h"
#include "kis_random_sub_accessor.h"
#include "kis_selection.h"
KisPerspectiveTransformWorker::KisPerspectiveTransformWorker(KisPaintDeviceSP dev, const KisPoint& topLeft, const KisPoint& topRight, const KisPoint& bottomLeft, const KisPoint& bottomRight, KisProgressDisplayInterface *progress)
: KisProgressSubject(), m_dev(dev), m_cancelRequested(false), m_progress(progress)
{
TQRect m_r;
if(m_dev->hasSelection())
m_r = m_dev->selection()->selectedExactRect();
else
m_r = m_dev->exactBounds();
/* if(m_dev->hasSelection())
m_dev->selection()->clear();*/
kdDebug() << "r = " << m_r << endl;
double* b = KisPerspectiveMath::computeMatrixTransfoToPerspective(topLeft, topRight, bottomLeft, bottomRight, m_r);
for(int i = 0; i < 3; i++)
{
for(int j = 0; j < 3; j++)
{
kdDebug() << "sol[" << 3*i+j << "]=" << b[3*i+j] << endl;
m_matrix[i][j] = b[3*i+j];
}
}
delete b;
}
KisPerspectiveTransformWorker::~KisPerspectiveTransformWorker()
{
}
double norm2(const KisPoint& p)
{
return sqrt(p.x() * p.x() + p.y() * p.y() );
}
void KisPerspectiveTransformWorker::run()
{
kdDebug() << "r = " << m_r << endl;
//TODO: understand why my caching of the rect didn't work...
if(m_dev->hasSelection())
{
m_r = m_dev->selection()->selectedExactRect();
}
else
{
m_r = m_dev->exactBounds();
}
// KisColorSpace * cs = m_dev->colorSpace();
kdDebug() << "r = " << m_r << endl;
KisRectIteratorPixel dstIt = m_dev->createRectIterator(m_r.x(), m_r.y(), m_r.width(), m_r.height(), true);
KisPaintDeviceSP srcdev = new KisPaintDevice(*m_dev.data());
{ // ensure that the random sub accessor is deleted first
KisRandomSubAccessorPixel srcAcc = srcdev->createRandomSubAccessor();
// Initialise progress
if(m_progress)
m_progress->setSubject(this, true, true);
m_lastProgressReport = 0;
m_progressStep = 0;
m_progressTotalSteps = m_r.width() * m_r.height();
//Action
while(!dstIt.isDone())
{
if(dstIt.isSelected())
{
KisPoint p;
double sf = ( dstIt.x() * m_matrix[2][0] + dstIt.y() * m_matrix[2][1] + 1.0);
sf = (sf == 0.) ? 1. : 1./sf;
p.setX( ( dstIt.x() * m_matrix[0][0] + dstIt.y() * m_matrix[0][1] + m_matrix[0][2] ) * sf );
p.setY( ( dstIt.x() * m_matrix[1][0] + dstIt.y() * m_matrix[1][1] + m_matrix[1][2] ) * sf );
srcAcc.moveTo( p );
srcAcc.sampledOldRawData( dstIt.rawData() );
// TODO: Should set alpha = alpha*(1-selectedness)
// cs->setAlpha( dstIt.rawData(), 255, 1);
} else {
// cs->setAlpha( dstIt.rawData(), 0, 1);
}
m_progressStep ++;
if(m_lastProgressReport != (m_progressStep * 100) / m_progressTotalSteps)
{
m_lastProgressReport = (m_progressStep * 100) / m_progressTotalSteps;
emit notifyProgress(m_lastProgressReport);
}
if (m_cancelRequested) {
break;
}
++dstIt;
}
}
}
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