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85 lines
3.1 KiB
85 lines
3.1 KiB
/*
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* This file is part of the KDE project
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*
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* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "kis_random_sub_accessor.h"
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#include "kis_paint_device.h"
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KisRandomSubAccessorPixel::KisRandomSubAccessorPixel(KisPaintDeviceSP device) :
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m_device(device), m_currentPoint( 0, 0 ), m_randomAccessor(device->createRandomAccessor(0,0, false))
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{
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}
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KisRandomSubAccessorPixel::~KisRandomSubAccessorPixel()
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{
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}
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void KisRandomSubAccessorPixel::sampledOldRawData(TQ_UINT8* dst)
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{
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const TQ_UINT8* pixels[4];
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TQ_UINT8 weights[4];
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int x = (int)floor(m_currentPoint.x());
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int y = (int)floor(m_currentPoint.y());
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double hsub = m_currentPoint.x() - x;
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if(hsub < 0.0 ) hsub = 1.0 + hsub;
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double vsub = m_currentPoint.y() - y;
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if(vsub < 0.0 ) vsub = 1.0 + vsub;
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weights[0] = (int)tqRound( ( 1.0 - hsub) * ( 1.0 - vsub) * 255 );
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m_randomAccessor.moveTo(x, y);
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pixels[0] = m_randomAccessor.oldRawData();
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weights[1] = (int)tqRound( ( 1.0 - vsub) * hsub * 255 );
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m_randomAccessor.moveTo(x+1, y);
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pixels[1] = m_randomAccessor.oldRawData();
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weights[2] = (int)tqRound( vsub * ( 1.0 - hsub) * 255 );
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m_randomAccessor.moveTo(x, y+1);
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pixels[2] = m_randomAccessor.oldRawData();
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weights[3] = (int)tqRound( hsub * vsub * 255 );
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m_randomAccessor.moveTo(x+1, y+1);
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pixels[3] = m_randomAccessor.oldRawData();
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m_device->colorSpace()->mixColors(pixels, weights, 4, dst);
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}
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void KisRandomSubAccessorPixel::sampledRawData(TQ_UINT8* dst)
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{
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const TQ_UINT8* pixels[4];
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TQ_UINT8 weights[4];
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int x = (int)floor(m_currentPoint.x());
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int y = (int)floor(m_currentPoint.y());
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double hsub = m_currentPoint.x() - x;
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if(hsub < 0.0 ) hsub = 1.0 + hsub;
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double vsub = m_currentPoint.y() - y;
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if(vsub < 0.0 ) vsub = 1.0 + vsub;
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weights[0] = (int)tqRound( ( 1.0 - hsub) * ( 1.0 - vsub) * 255 );
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m_randomAccessor.moveTo(x, y);
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pixels[0] = m_randomAccessor.rawData();
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weights[1] = (int)tqRound( ( 1.0 - vsub) * hsub * 255 );
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m_randomAccessor.moveTo(x+1, y);
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pixels[1] = m_randomAccessor.rawData();
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weights[2] = (int)tqRound( vsub * ( 1.0 - hsub) * 255 );
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m_randomAccessor.moveTo(x, y+1);
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pixels[2] = m_randomAccessor.rawData();
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weights[3] = (int)tqRound( hsub * vsub * 255 );
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m_randomAccessor.moveTo(x+1, y+1);
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pixels[3] = m_randomAccessor.rawData();
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m_device->colorSpace()->mixColors(pixels, weights, 4, dst);
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}
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