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/*
* Copyright 2012, 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:
* Dalai Felinto
* Daniel Salazar
*/
#include "COM_MapRangeOperation.h"
MapRangeOperation::MapRangeOperation() : NodeOperation()
{
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addInputSocket(COM_DT_VALUE);
this->addOutputSocket(COM_DT_VALUE);
this->m_inputOperation = NULL;
this->m_useClamp = FALSE;
}
void MapRangeOperation::initExecution()
{
this->m_inputOperation = this->getInputSocketReader(0);
this->m_sourceMinOperation = this->getInputSocketReader(1);
this->m_sourceMaxOperation = this->getInputSocketReader(2);
this->m_destMinOperation = this->getInputSocketReader(3);
this->m_destMaxOperation = this->getInputSocketReader(4);
}
void MapRangeOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
{
float inputs[8]; /* includes the 5 inputs + 3 pads */
float value;
float source_min, source_max;
float dest_min, dest_max;
this->m_inputOperation->read(inputs, x, y, sampler);
this->m_sourceMinOperation->read(inputs + 1, x, y, sampler);
this->m_sourceMaxOperation->read(inputs + 2, x, y, sampler);
this->m_destMinOperation->read(inputs + 3, x, y, sampler);
this->m_destMaxOperation->read(inputs + 4, x, y, sampler);
value = inputs[0];
source_min = inputs[1];
source_max = inputs[2];
dest_min = inputs[3];
dest_max = inputs[4];
value = (value - source_min) / (source_max - source_min);
value = dest_min + value * (dest_max - dest_min);
if (this->m_useClamp) {
if (dest_max > dest_min) {
CLAMP(value, dest_min, dest_max);
}
else {
CLAMP(value, dest_max, dest_min);
}
}
output[0] = value;
}
void MapRangeOperation::deinitExecution()
{
this->m_inputOperation = NULL;
this->m_sourceMinOperation = NULL;
this->m_sourceMaxOperation = NULL;
this->m_destMinOperation = NULL;
this->m_destMaxOperation = NULL;
}
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