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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 2012, Blender Foundation.
*/
#include "COM_MaskOperation.h"
#include "BKE_lib_id.h"
#include "BKE_mask.h"
namespace blender::compositor {
MaskOperation::MaskOperation()
{
this->add_output_socket(DataType::Value);
mask_ = nullptr;
mask_width_ = 0;
mask_height_ = 0;
mask_width_inv_ = 0.0f;
mask_height_inv_ = 0.0f;
frame_shutter_ = 0.0f;
frame_number_ = 0;
raster_mask_handle_tot_ = 1;
memset(raster_mask_handles_, 0, sizeof(raster_mask_handles_));
}
void MaskOperation::init_execution()
{
if (mask_ && raster_mask_handles_[0] == nullptr) {
if (raster_mask_handle_tot_ == 1) {
raster_mask_handles_[0] = BKE_maskrasterize_handle_new();
BKE_maskrasterize_handle_init(
raster_mask_handles_[0], mask_, mask_width_, mask_height_, true, true, do_feather_);
}
else {
/* make a throw away copy of the mask */
const float frame = (float)frame_number_ - frame_shutter_;
const float frame_step = (frame_shutter_ * 2.0f) / raster_mask_handle_tot_;
float frame_iter = frame;
Mask *mask_temp = (Mask *)BKE_id_copy_ex(
nullptr, &mask_->id, nullptr, LIB_ID_COPY_LOCALIZE | LIB_ID_COPY_NO_ANIMDATA);
/* trick so we can get unkeyed edits to display */
{
MaskLayer *masklay;
MaskLayerShape *masklay_shape;
for (masklay = (MaskLayer *)mask_temp->masklayers.first; masklay;
masklay = masklay->next) {
masklay_shape = BKE_mask_layer_shape_verify_frame(masklay, frame_number_);
BKE_mask_layer_shape_from_mask(masklay, masklay_shape);
}
}
for (unsigned int i = 0; i < raster_mask_handle_tot_; i++) {
raster_mask_handles_[i] = BKE_maskrasterize_handle_new();
/* re-eval frame info */
BKE_mask_evaluate(mask_temp, frame_iter, true);
BKE_maskrasterize_handle_init(raster_mask_handles_[i],
mask_temp,
mask_width_,
mask_height_,
true,
true,
do_feather_);
frame_iter += frame_step;
}
BKE_id_free(nullptr, &mask_temp->id);
}
}
}
void MaskOperation::deinit_execution()
{
for (unsigned int i = 0; i < raster_mask_handle_tot_; i++) {
if (raster_mask_handles_[i]) {
BKE_maskrasterize_handle_free(raster_mask_handles_[i]);
raster_mask_handles_[i] = nullptr;
}
}
}
void MaskOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
if (mask_width_ == 0 || mask_height_ == 0) {
r_area = COM_AREA_NONE;
}
else {
r_area = preferred_area;
r_area.xmax = r_area.xmin + mask_width_;
r_area.ymax = r_area.ymin + mask_height_;
}
}
void MaskOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler /*sampler*/)
{
const float xy[2] = {
(x * mask_width_inv_) + mask_px_ofs_[0],
(y * mask_height_inv_) + mask_px_ofs_[1],
};
if (raster_mask_handle_tot_ == 1) {
if (raster_mask_handles_[0]) {
output[0] = BKE_maskrasterize_handle_sample(raster_mask_handles_[0], xy);
}
else {
output[0] = 0.0f;
}
}
else {
/* In case loop below fails. */
output[0] = 0.0f;
for (unsigned int i = 0; i < raster_mask_handle_tot_; i++) {
if (raster_mask_handles_[i]) {
output[0] += BKE_maskrasterize_handle_sample(raster_mask_handles_[i], xy);
}
}
/* until we get better falloff */
output[0] /= raster_mask_handle_tot_;
}
}
void MaskOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> UNUSED(inputs))
{
Vector<MaskRasterHandle *> handles = get_non_null_handles();
if (handles.size() == 0) {
output->fill(area, COM_VALUE_ZERO);
return;
}
float xy[2];
for (BuffersIterator<float> it = output->iterate_with({}, area); !it.is_end(); ++it) {
xy[0] = it.x * mask_width_inv_ + mask_px_ofs_[0];
xy[1] = it.y * mask_height_inv_ + mask_px_ofs_[1];
*it.out = 0.0f;
for (MaskRasterHandle *handle : handles) {
*it.out += BKE_maskrasterize_handle_sample(handle, xy);
}
/* Until we get better falloff. */
*it.out /= raster_mask_handle_tot_;
}
}
Vector<MaskRasterHandle *> MaskOperation::get_non_null_handles() const
{
Vector<MaskRasterHandle *> handles;
for (int i = 0; i < raster_mask_handle_tot_; i++) {
MaskRasterHandle *handle = raster_mask_handles_[i];
if (handle == nullptr) {
continue;
}
handles.append(handle);
}
return handles;
}
} // namespace blender::compositor
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