Sergey Sharybin
7fa7ce297e
Think should be pretty much harmless since if this node was used for buffers with infinities it already showed artifacts. Now it should be more useful for mapping Z buffers.
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::executePixel(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->read(inputs, x, y, sampler);
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this->m_sourceMinOperation->read(inputs + 1, x, y, sampler);
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this->m_sourceMaxOperation->read(inputs + 2, x, y, sampler);
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this->m_destMinOperation->read(inputs + 3, x, y, sampler);
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this->m_destMaxOperation->read(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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