Manuel Castilla
153b45037f
Adds full frame implementation to Channel Key, Chroma Key, Color Key, Color Spill, Cryptomatte, Difference Key, Distance Key, Keying, Keying Screen and Luminance Key nodes. The other nodes in "Matte" sub-menu are submitted separately. No functional changes. Part of T88150. Reviewed By: jbakker Differential Revision: https://developer.blender.org/D12220
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
/*
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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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* Copyright 2011, Blender Foundation.
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*/
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#include "COM_DifferenceMatteOperation.h"
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#include "BLI_math.h"
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namespace blender::compositor {
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DifferenceMatteOperation::DifferenceMatteOperation()
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{
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addInputSocket(DataType::Color);
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addInputSocket(DataType::Color);
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addOutputSocket(DataType::Value);
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this->m_inputImage1Program = nullptr;
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this->m_inputImage2Program = nullptr;
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flags.can_be_constant = true;
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}
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void DifferenceMatteOperation::initExecution()
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{
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this->m_inputImage1Program = this->getInputSocketReader(0);
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this->m_inputImage2Program = this->getInputSocketReader(1);
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}
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void DifferenceMatteOperation::deinitExecution()
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{
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this->m_inputImage1Program = nullptr;
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this->m_inputImage2Program = nullptr;
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}
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void DifferenceMatteOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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float inColor1[4];
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float inColor2[4];
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const float tolerance = this->m_settings->t1;
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const float falloff = this->m_settings->t2;
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float difference;
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float alpha;
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this->m_inputImage1Program->readSampled(inColor1, x, y, sampler);
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this->m_inputImage2Program->readSampled(inColor2, x, y, sampler);
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difference = (fabsf(inColor2[0] - inColor1[0]) + fabsf(inColor2[1] - inColor1[1]) +
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fabsf(inColor2[2] - inColor1[2]));
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/* average together the distances */
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difference = difference / 3.0f;
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/* make 100% transparent */
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if (difference <= tolerance) {
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output[0] = 0.0f;
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}
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/* In the falloff region, make partially transparent. */
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else if (difference <= falloff + tolerance) {
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difference = difference - tolerance;
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alpha = difference / falloff;
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/* Only change if more transparent than before. */
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if (alpha < inColor1[3]) {
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output[0] = alpha;
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}
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else { /* leave as before */
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output[0] = inColor1[3];
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}
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}
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else {
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/* foreground object */
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output[0] = inColor1[3];
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}
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}
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void DifferenceMatteOperation::update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs)
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{
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for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
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const float *color1 = it.in(0);
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const float *color2 = it.in(1);
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float difference = (fabsf(color2[0] - color1[0]) + fabsf(color2[1] - color1[1]) +
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fabsf(color2[2] - color1[2]));
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/* Average together the distances. */
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difference = difference / 3.0f;
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const float tolerance = m_settings->t1;
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const float falloff = m_settings->t2;
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/* Make 100% transparent. */
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if (difference <= tolerance) {
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it.out[0] = 0.0f;
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}
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/* In the falloff region, make partially transparent. */
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else if (difference <= falloff + tolerance) {
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difference = difference - tolerance;
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const float alpha = difference / falloff;
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/* Only change if more transparent than before. */
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if (alpha < color1[3]) {
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it.out[0] = alpha;
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}
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else { /* Leave as before. */
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it.out[0] = color1[3];
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}
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}
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else {
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/* Foreground object. */
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it.out[0] = color1[3];
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}
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}
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}
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} // namespace blender::compositor
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