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
113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/*
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* Copyright 2011, 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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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "COM_ProjectorLensDistortionOperation.h"
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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ProjectorLensDistortionOperation::ProjectorLensDistortionOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_COLOR);
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this->addInputSocket(COM_DT_VALUE);
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this->addOutputSocket(COM_DT_COLOR);
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this->setComplex(true);
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this->m_inputProgram = NULL;
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this->m_dispersionAvailable = false;
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this->m_dispersion = 0.0f;
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}
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void ProjectorLensDistortionOperation::initExecution()
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{
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this->initMutex();
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this->m_inputProgram = this->getInputSocketReader(0);
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}
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void *ProjectorLensDistortionOperation::initializeTileData(rcti *rect)
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{
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updateDispersion();
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void *buffer = this->m_inputProgram->initializeTileData(NULL);
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return buffer;
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}
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void ProjectorLensDistortionOperation::executePixel(float output[4], int x, int y, void *data)
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{
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float inputValue[4];
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const float height = this->getHeight();
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const float width = this->getWidth();
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const float v = (y + 0.5f) / height;
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const float u = (x + 0.5f) / width;
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MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
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inputBuffer->readBilinear(inputValue, (u * width + this->m_kr2) - 0.5f, v * height - 0.5f);
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output[0] = inputValue[0];
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inputBuffer->read(inputValue, x, y);
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output[1] = inputValue[1];
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inputBuffer->readBilinear(inputValue, (u * width - this->m_kr2) - 0.5f, v * height - 0.5f);
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output[2] = inputValue[2];
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output[3] = 1.0f;
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}
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void ProjectorLensDistortionOperation::deinitExecution()
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{
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this->deinitMutex();
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this->m_inputProgram = NULL;
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}
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bool ProjectorLensDistortionOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
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{
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rcti newInput;
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if (this->m_dispersionAvailable) {
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newInput.ymax = input->ymax;
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newInput.ymin = input->ymin;
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newInput.xmin = input->xmin - this->m_kr2 - 2;
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newInput.xmax = input->xmax + this->m_kr2 + 2;
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}
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else {
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rcti dispInput;
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BLI_rcti_init(&dispInput, 0, 5, 0, 5);
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if (this->getInputOperation(1)->determineDependingAreaOfInterest(&dispInput, readOperation, output)) {
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return true;
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}
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newInput.xmin = input->xmin - 7; /* (0.25f * 20 * 1) + 2 == worse case dispersion */
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newInput.ymin = input->ymin;
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newInput.ymax = input->ymax;
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newInput.xmax = input->xmax + 7; /* (0.25f * 20 * 1) + 2 == worse case dispersion */
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}
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if (this->getInputOperation(0)->determineDependingAreaOfInterest(&newInput, readOperation, output)) {
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return true;
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}
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return false;
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}
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void ProjectorLensDistortionOperation::updateDispersion()
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{
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if (this->m_dispersionAvailable) return;
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this->lockMutex();
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if (!this->m_dispersionAvailable) {
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float result[4];
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this->getInputSocketReader(1)->readSampled(result, 1, 1, COM_PS_NEAREST);
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this->m_dispersion = result[0];
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this->m_kr = 0.25f * max_ff(min_ff(this->m_dispersion, 1.0f), 0.0f);
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this->m_kr2 = this->m_kr * 20;
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this->m_dispersionAvailable = true;
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}
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this->unlockMutex();
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}
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