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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_HueSaturationValueCorrectOperation.h"
#include "BLI_math.h"
#include "BKE_colortools.h"
namespace blender::compositor {
HueSaturationValueCorrectOperation::HueSaturationValueCorrectOperation()
{
this->addInputSocket(DataType::Color);
this->addOutputSocket(DataType::Color);
this->m_inputProgram = nullptr;
}
void HueSaturationValueCorrectOperation::initExecution()
{
CurveBaseOperation::initExecution();
this->m_inputProgram = this->getInputSocketReader(0);
}
void HueSaturationValueCorrectOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float hsv[4], f;
this->m_inputProgram->readSampled(hsv, x, y, sampler);
/* adjust hue, scaling returned default 0.5 up to 1 */
f = BKE_curvemapping_evaluateF(this->m_curveMapping, 0, hsv[0]);
hsv[0] += f - 0.5f;
/* adjust saturation, scaling returned default 0.5 up to 1 */
f = BKE_curvemapping_evaluateF(this->m_curveMapping, 1, hsv[0]);
hsv[1] *= (f * 2.0f);
/* adjust value, scaling returned default 0.5 up to 1 */
f = BKE_curvemapping_evaluateF(this->m_curveMapping, 2, hsv[0]);
hsv[2] *= (f * 2.0f);
hsv[0] = hsv[0] - floorf(hsv[0]); /* mod 1.0 */
CLAMP(hsv[1], 0.0f, 1.0f);
output[0] = hsv[0];
output[1] = hsv[1];
output[2] = hsv[2];
output[3] = hsv[3];
}
void HueSaturationValueCorrectOperation::deinitExecution()
{
CurveBaseOperation::deinitExecution();
this->m_inputProgram = nullptr;
}
void HueSaturationValueCorrectOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
float hsv[4];
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
copy_v4_v4(hsv, it.in(0));
/* Adjust hue, scaling returned default 0.5 up to 1. */
float f = BKE_curvemapping_evaluateF(this->m_curveMapping, 0, hsv[0]);
hsv[0] += f - 0.5f;
/* Adjust saturation, scaling returned default 0.5 up to 1. */
f = BKE_curvemapping_evaluateF(this->m_curveMapping, 1, hsv[0]);
hsv[1] *= (f * 2.0f);
/* Adjust value, scaling returned default 0.5 up to 1. */
f = BKE_curvemapping_evaluateF(this->m_curveMapping, 2, hsv[0]);
hsv[2] *= (f * 2.0f);
hsv[0] = hsv[0] - floorf(hsv[0]); /* Mod 1.0. */
CLAMP(hsv[1], 0.0f, 1.0f);
copy_v4_v4(it.out, hsv);
}
}
} // namespace blender::compositor
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