Lukas Tönne
c566e408e4
Distinguish the 3 different methods for acquiring pixel color values (executePixel, executePixelSampled, executePixelFiltered). This makes it easier to keep track of the different sampling methods (and works nicer with IDEs that do code parsing). Differential Revision: http://developer.blender.org/D7
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*
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* Copyright 2012, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor:
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* Dalai Felinto
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* Daniel Salazar
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*/
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#include "COM_MapRangeOperation.h"
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MapRangeOperation::MapRangeOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_VALUE);
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this->addInputSocket(COM_DT_VALUE);
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this->addInputSocket(COM_DT_VALUE);
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this->addInputSocket(COM_DT_VALUE);
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this->addInputSocket(COM_DT_VALUE);
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this->addOutputSocket(COM_DT_VALUE);
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this->m_inputOperation = NULL;
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this->m_useClamp = FALSE;
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}
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void MapRangeOperation::initExecution()
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{
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this->m_inputOperation = this->getInputSocketReader(0);
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this->m_sourceMinOperation = this->getInputSocketReader(1);
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this->m_sourceMaxOperation = this->getInputSocketReader(2);
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this->m_destMinOperation = this->getInputSocketReader(3);
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this->m_destMaxOperation = this->getInputSocketReader(4);
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}
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/* The code below assumes all data is inside range +- this, and that input buffer is single channel */
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#define BLENDER_ZMAX 10000.0f
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void MapRangeOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
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{
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float inputs[8]; /* includes the 5 inputs + 3 pads */
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float value;
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float source_min, source_max;
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float dest_min, dest_max;
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this->m_inputOperation->readSampled(inputs, x, y, sampler);
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this->m_sourceMinOperation->readSampled(inputs + 1, x, y, sampler);
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this->m_sourceMaxOperation->readSampled(inputs + 2, x, y, sampler);
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this->m_destMinOperation->readSampled(inputs + 3, x, y, sampler);
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this->m_destMaxOperation->readSampled(inputs + 4, x, y, sampler);
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value = inputs[0];
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source_min = inputs[1];
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source_max = inputs[2];
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dest_min = inputs[3];
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dest_max = inputs[4];
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if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) {
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value = (value - source_min) / (source_max - source_min);
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value = dest_min + value * (dest_max - dest_min);
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}
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else if (value > BLENDER_ZMAX)
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value = dest_max;
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else
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value = dest_min;
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if (this->m_useClamp) {
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if (dest_max > dest_min) {
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CLAMP(value, dest_min, dest_max);
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}
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else {
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CLAMP(value, dest_max, dest_min);
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}
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}
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output[0] = value;
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}
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void MapRangeOperation::deinitExecution()
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{
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this->m_inputOperation = NULL;
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this->m_sourceMinOperation = NULL;
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this->m_sourceMaxOperation = NULL;
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this->m_destMinOperation = NULL;
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this->m_destMaxOperation = NULL;
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}
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