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/*
* Copyright 2011, Blender Foundation.
*
* 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.
*
* Contributor:
* Jeroen Bakker
* Monique Dewanchand
*/
#include "COM_FlipOperation.h"
FlipOperation::FlipOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_COLOR);
this->addOutputSocket(COM_DT_COLOR);
this->setResolutionInputSocketIndex(0);
this->m_inputOperation = NULL;
this->m_flipX = true;
this->m_flipY = false;
}
void FlipOperation::initExecution()
{
this->m_inputOperation = this->getInputSocketReader(0);
}
void FlipOperation::deinitExecution()
{
this->m_inputOperation = NULL;
}
void FlipOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
{
float nx = this->m_flipX ? this->getWidth() - 1 - x : x;
float ny = this->m_flipY ? this->getHeight() - 1 - y : y;
this->m_inputOperation->read(output, nx, ny, sampler);
}
bool FlipOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
if (this->m_flipX) {
newInput.xmax = (this->getWidth() - 1 - input->xmin) + 1;
newInput.xmin = (this->getWidth() - 1 - input->xmax) - 1;
}
else {
newInput.xmin = input->xmin;
newInput.xmax = input->xmax;
}
if (this->m_flipY) {
newInput.ymax = (this->getHeight() - 1 - input->ymin) + 1;
newInput.ymin = (this->getHeight() - 1 - input->ymax) - 1;
}
else {
newInput.ymin = input->ymin;
newInput.ymax = input->ymax;
}
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
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