124 lines
3.2 KiB
C++
124 lines
3.2 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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* Jeroen Bakker
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* Monique Dewanchand
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* Sergey Sharybin
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*/
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#include "COM_KeyingClipOperation.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_listbase.h"
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#include "BLI_math.h"
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KeyingClipOperation::KeyingClipOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_VALUE);
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this->addOutputSocket(COM_DT_VALUE);
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this->m_kernelRadius = 3;
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this->m_kernelTolerance = 0.1f;
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this->m_clipBlack = 0.0f;
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this->m_clipWhite = 1.0f;
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this->m_isEdgeMatte = false;
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this->setComplex(true);
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}
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void *KeyingClipOperation::initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers)
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{
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void *buffer = getInputOperation(0)->initializeTileData(rect, memoryBuffers);
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return buffer;
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}
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void KeyingClipOperation::executePixel(float *color, int x, int y, MemoryBuffer *inputBuffers[], void *data)
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{
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const int delta = this->m_kernelRadius;
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const float tolerance = this->m_kernelTolerance;
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MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
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float *buffer = inputBuffer->getBuffer();
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int bufferWidth = inputBuffer->getWidth();
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int bufferHeight = inputBuffer->getHeight();
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int i, j, count = 0, totalCount = 0;
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float value = buffer[(y * bufferWidth + x) * 4];
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bool ok = false;
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for (i = -delta + 1; i < delta; i++) {
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for (j = -delta + 1; j < delta; j++) {
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int cx = x + j, cy = y + i;
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if (i == 0 && j == 0)
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continue;
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if (cx >= 0 && cx < bufferWidth && cy >= 0 && cy < bufferHeight) {
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int bufferIndex = (cy * bufferWidth + cx) * 4;
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float currentValue = buffer[bufferIndex];
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if (fabsf(currentValue - value) < tolerance) {
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count++;
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}
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totalCount++;
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}
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}
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}
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ok = count >= (float) totalCount * 0.9f;
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if (this->m_isEdgeMatte) {
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if (ok)
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color[0] = 0.0f;
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else
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color[0] = 1.0f;
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}
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else {
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color[0] = value;
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if (ok) {
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if (color[0] < this->m_clipBlack)
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color[0] = 0.0f;
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else if (color[0] >= this->m_clipWhite)
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color[0] = 1.0f;
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else
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color[0] = (color[0] - this->m_clipBlack) / (this->m_clipWhite - this->m_clipBlack);
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}
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}
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}
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bool KeyingClipOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
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{
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rcti newInput;
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newInput.xmin = input->xmin - this->m_kernelRadius;
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newInput.ymin = input->ymin - this->m_kernelRadius;
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newInput.xmax = input->xmax + this->m_kernelRadius;
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newInput.ymax = input->ymax + this->m_kernelRadius;
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return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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