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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_InvertOperation.h"
InvertOperation::InvertOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_COLOR);
this->addOutputSocket(COM_DT_COLOR);
this->m_inputValueProgram = NULL;
this->m_inputColorProgram = NULL;
this->m_color = true;
this->m_alpha = false;
setResolutionInputSocketIndex(1);
}
void InvertOperation::initExecution()
{
this->m_inputValueProgram = this->getInputSocketReader(0);
this->m_inputColorProgram = this->getInputSocketReader(1);
}
void InvertOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
float inputValue[4];
float inputColor[4];
this->m_inputValueProgram->readSampled(inputValue, x, y, sampler);
this->m_inputColorProgram->readSampled(inputColor, x, y, sampler);
const float value = inputValue[0];
const float invertedValue = 1.0f - value;
if (this->m_color) {
output[0] = (1.0f - inputColor[0]) * value + inputColor[0] * invertedValue;
output[1] = (1.0f - inputColor[1]) * value + inputColor[1] * invertedValue;
output[2] = (1.0f - inputColor[2]) * value + inputColor[2] * invertedValue;
}
else {
copy_v3_v3(output, inputColor);
}
if (this->m_alpha)
output[3] = (1.0f - inputColor[3]) * value + inputColor[3] * invertedValue;
else
output[3] = inputColor[3];
}
void InvertOperation::deinitExecution()
{
this->m_inputValueProgram = NULL;
this->m_inputColorProgram = NULL;
}
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