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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_MapValueOperation.h"
namespace blender::compositor {
MapValueOperation::MapValueOperation()
{
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Value);
input_operation_ = nullptr;
flags.can_be_constant = true;
}
void MapValueOperation::init_execution()
{
input_operation_ = this->get_input_socket_reader(0);
}
void MapValueOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float src[4];
input_operation_->read_sampled(src, x, y, sampler);
TexMapping *texmap = settings_;
float value = (src[0] + texmap->loc[0]) * texmap->size[0];
if (texmap->flag & TEXMAP_CLIP_MIN) {
if (value < texmap->min[0]) {
value = texmap->min[0];
}
}
if (texmap->flag & TEXMAP_CLIP_MAX) {
if (value > texmap->max[0]) {
value = texmap->max[0];
}
}
output[0] = value;
}
void MapValueOperation::deinit_execution()
{
input_operation_ = nullptr;
}
void MapValueOperation::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 input = *it.in(0);
TexMapping *texmap = settings_;
float value = (input + texmap->loc[0]) * texmap->size[0];
if (texmap->flag & TEXMAP_CLIP_MIN) {
if (value < texmap->min[0]) {
value = texmap->min[0];
}
}
if (texmap->flag & TEXMAP_CLIP_MAX) {
if (value > texmap->max[0]) {
value = texmap->max[0];
}
}
it.out[0] = value;
}
}
} // namespace blender::compositor
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