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/*
* This file is part of the KDE project
*
* 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_random_sub_accessor.h"
#include "kis_paint_device.h"
KisRandomSubAccessorPixel::KisRandomSubAccessorPixel(KisPaintDeviceSP device) :
m_device(device), m_currentPoint( 0, 0 ), m_randomAccessor(device->createRandomAccessor(0,0, false))
{
}
KisRandomSubAccessorPixel::~KisRandomSubAccessorPixel()
{
}
void KisRandomSubAccessorPixel::sampledOldRawData(TQ_UINT8* dst)
{
const TQ_UINT8* pixels[4];
TQ_UINT8 weights[4];
int x = (int)floor(m_currentPoint.x());
int y = (int)floor(m_currentPoint.y());
double hsub = m_currentPoint.x() - x;
if(hsub < 0.0 ) hsub = 1.0 + hsub;
double vsub = m_currentPoint.y() - y;
if(vsub < 0.0 ) vsub = 1.0 + vsub;
weights[0] = (int)tqRound( ( 1.0 - hsub) * ( 1.0 - vsub) * 255 );
m_randomAccessor.moveTo(x, y);
pixels[0] = m_randomAccessor.oldRawData();
weights[1] = (int)tqRound( ( 1.0 - vsub) * hsub * 255 );
m_randomAccessor.moveTo(x+1, y);
pixels[1] = m_randomAccessor.oldRawData();
weights[2] = (int)tqRound( vsub * ( 1.0 - hsub) * 255 );
m_randomAccessor.moveTo(x, y+1);
pixels[2] = m_randomAccessor.oldRawData();
weights[3] = (int)tqRound( hsub * vsub * 255 );
m_randomAccessor.moveTo(x+1, y+1);
pixels[3] = m_randomAccessor.oldRawData();
m_device->colorSpace()->mixColors(pixels, weights, 4, dst);
}
void KisRandomSubAccessorPixel::sampledRawData(TQ_UINT8* dst)
{
const TQ_UINT8* pixels[4];
TQ_UINT8 weights[4];
int x = (int)floor(m_currentPoint.x());
int y = (int)floor(m_currentPoint.y());
double hsub = m_currentPoint.x() - x;
if(hsub < 0.0 ) hsub = 1.0 + hsub;
double vsub = m_currentPoint.y() - y;
if(vsub < 0.0 ) vsub = 1.0 + vsub;
weights[0] = (int)tqRound( ( 1.0 - hsub) * ( 1.0 - vsub) * 255 );
m_randomAccessor.moveTo(x, y);
pixels[0] = m_randomAccessor.rawData();
weights[1] = (int)tqRound( ( 1.0 - vsub) * hsub * 255 );
m_randomAccessor.moveTo(x+1, y);
pixels[1] = m_randomAccessor.rawData();
weights[2] = (int)tqRound( vsub * ( 1.0 - hsub) * 255 );
m_randomAccessor.moveTo(x, y+1);
pixels[2] = m_randomAccessor.rawData();
weights[3] = (int)tqRound( hsub * vsub * 255 );
m_randomAccessor.moveTo(x+1, y+1);
pixels[3] = m_randomAccessor.rawData();
m_device->colorSpace()->mixColors(pixels, weights, 4, dst);
}
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