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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_SplitOperation.h"
namespace blender::compositor {
SplitOperation::SplitOperation()
{
this->add_input_socket(DataType::Color);
this->add_input_socket(DataType::Color);
this->add_output_socket(DataType::Color);
image1Input_ = nullptr;
image2Input_ = nullptr;
}
void SplitOperation::init_execution()
{
/* When initializing the tree during initial load the width and height can be zero. */
image1Input_ = get_input_socket_reader(0);
image2Input_ = get_input_socket_reader(1);
}
void SplitOperation::deinit_execution()
{
image1Input_ = nullptr;
image2Input_ = nullptr;
}
void SplitOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler /*sampler*/)
{
int perc = x_split_ ? split_percentage_ * this->get_width() / 100.0f :
split_percentage_ * this->get_height() / 100.0f;
bool image1 = x_split_ ? x > perc : y > perc;
if (image1) {
image1Input_->read_sampled(output, x, y, PixelSampler::Nearest);
}
else {
image2Input_->read_sampled(output, x, y, PixelSampler::Nearest);
}
}
void SplitOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
rcti unused_area;
const bool determined = this->get_input_socket(0)->determine_canvas(COM_AREA_NONE, unused_area);
this->set_canvas_input_index(determined ? 0 : 1);
NodeOperation::determine_canvas(preferred_area, r_area);
}
void SplitOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const int percent = x_split_ ? split_percentage_ * this->get_width() / 100.0f :
split_percentage_ * this->get_height() / 100.0f;
const size_t elem_bytes = COM_data_type_bytes_len(get_output_socket()->get_data_type());
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const bool is_image1 = x_split_ ? it.x > percent : it.y > percent;
memcpy(it.out, it.in(is_image1 ? 0 : 1), elem_bytes);
}
}
} // namespace blender::compositor
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