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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2011, Blender Foundation.
*/
#include "COM_ChangeHSVOperation.h"
namespace blender::compositor {
ChangeHSVOperation::ChangeHSVOperation()
{
this->addInputSocket(DataType::Color);
this->addInputSocket(DataType::Value);
this->addInputSocket(DataType::Value);
this->addInputSocket(DataType::Value);
this->addOutputSocket(DataType::Color);
inputOperation_ = nullptr;
this->flags.can_be_constant = true;
}
void ChangeHSVOperation::initExecution()
{
inputOperation_ = getInputSocketReader(0);
hueOperation_ = getInputSocketReader(1);
saturationOperation_ = getInputSocketReader(2);
valueOperation_ = getInputSocketReader(3);
}
void ChangeHSVOperation::deinitExecution()
{
inputOperation_ = nullptr;
hueOperation_ = nullptr;
saturationOperation_ = nullptr;
valueOperation_ = nullptr;
}
void ChangeHSVOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float inputColor1[4];
float hue[4], saturation[4], value[4];
inputOperation_->readSampled(inputColor1, x, y, sampler);
hueOperation_->readSampled(hue, x, y, sampler);
saturationOperation_->readSampled(saturation, x, y, sampler);
valueOperation_->readSampled(value, x, y, sampler);
output[0] = inputColor1[0] + (hue[0] - 0.5f);
if (output[0] > 1.0f) {
output[0] -= 1.0f;
}
else if (output[0] < 0.0f) {
output[0] += 1.0f;
}
output[1] = inputColor1[1] * saturation[0];
output[2] = inputColor1[2] * value[0];
output[3] = inputColor1[3];
}
void ChangeHSVOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float *color = it.in(0);
const float hue = *it.in(1);
it.out[0] = color[0] + (hue - 0.5f);
if (it.out[0] > 1.0f) {
it.out[0] -= 1.0f;
}
else if (it.out[0] < 0.0f) {
it.out[0] += 1.0f;
}
const float saturation = *it.in(2);
const float value = *it.in(3);
it.out[1] = color[1] * saturation;
it.out[2] = color[2] * value;
it.out[3] = color[3];
}
}
} // namespace blender::compositor
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