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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_EllipseMaskOperation.h"
namespace blender::compositor {
EllipseMaskOperation::EllipseMaskOperation()
{
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Value);
input_mask_ = nullptr;
input_value_ = nullptr;
cosine_ = 0.0f;
sine_ = 0.0f;
}
void EllipseMaskOperation::init_execution()
{
input_mask_ = this->get_input_socket_reader(0);
input_value_ = this->get_input_socket_reader(1);
const double rad = (double)data_->rotation;
cosine_ = cos(rad);
sine_ = sin(rad);
aspect_ratio_ = ((float)this->get_width()) / this->get_height();
}
void EllipseMaskOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float input_mask[4];
float input_value[4];
float rx = x / MAX2(this->get_width() - 1.0f, FLT_EPSILON);
float ry = y / MAX2(this->get_height() - 1.0f, FLT_EPSILON);
const float dy = (ry - data_->y) / aspect_ratio_;
const float dx = rx - data_->x;
rx = data_->x + (cosine_ * dx + sine_ * dy);
ry = data_->y + (-sine_ * dx + cosine_ * dy);
input_mask_->read_sampled(input_mask, x, y, sampler);
input_value_->read_sampled(input_value, x, y, sampler);
const float half_height = (data_->height) / 2.0f;
const float half_width = data_->width / 2.0f;
float sx = rx - data_->x;
sx *= sx;
const float tx = half_width * half_width;
float sy = ry - data_->y;
sy *= sy;
const float ty = half_height * half_height;
bool inside = ((sx / tx) + (sy / ty)) <= (1.0f + FLT_EPSILON);
switch (mask_type_) {
case CMP_NODE_MASKTYPE_ADD:
if (inside) {
output[0] = MAX2(input_mask[0], input_value[0]);
}
else {
output[0] = input_mask[0];
}
break;
case CMP_NODE_MASKTYPE_SUBTRACT:
if (inside) {
output[0] = input_mask[0] - input_value[0];
CLAMP(output[0], 0, 1);
}
else {
output[0] = input_mask[0];
}
break;
case CMP_NODE_MASKTYPE_MULTIPLY:
if (inside) {
output[0] = input_mask[0] * input_value[0];
}
else {
output[0] = 0;
}
break;
case CMP_NODE_MASKTYPE_NOT:
if (inside) {
if (input_mask[0] > 0.0f) {
output[0] = 0;
}
else {
output[0] = input_value[0];
}
}
else {
output[0] = input_mask[0];
}
break;
}
}
void EllipseMaskOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
MaskFunc mask_func;
switch (mask_type_) {
case CMP_NODE_MASKTYPE_ADD:
mask_func = [](const bool is_inside, const float *mask, const float *value) {
return is_inside ? MAX2(mask[0], value[0]) : mask[0];
};
break;
case CMP_NODE_MASKTYPE_SUBTRACT:
mask_func = [](const bool is_inside, const float *mask, const float *value) {
return is_inside ? CLAMPIS(mask[0] - value[0], 0, 1) : mask[0];
};
break;
case CMP_NODE_MASKTYPE_MULTIPLY:
mask_func = [](const bool is_inside, const float *mask, const float *value) {
return is_inside ? mask[0] * value[0] : 0;
};
break;
case CMP_NODE_MASKTYPE_NOT:
mask_func = [](const bool is_inside, const float *mask, const float *value) {
if (is_inside) {
return mask[0] > 0.0f ? 0.0f : value[0];
}
return mask[0];
};
break;
}
apply_mask(output, area, inputs, mask_func);
}
void EllipseMaskOperation::apply_mask(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs,
MaskFunc mask_func)
{
const MemoryBuffer *input_mask = inputs[0];
const MemoryBuffer *input_value = inputs[1];
const float op_last_x = MAX2(this->get_width() - 1.0f, FLT_EPSILON);
const float op_last_y = MAX2(this->get_height() - 1.0f, FLT_EPSILON);
const float half_w = data_->width / 2.0f;
const float half_h = data_->height / 2.0f;
const float tx = half_w * half_w;
const float ty = half_h * half_h;
for (int y = area.ymin; y < area.ymax; y++) {
const float op_ry = y / op_last_y;
const float dy = (op_ry - data_->y) / aspect_ratio_;
float *out = output->get_elem(area.xmin, y);
const float *mask = input_mask->get_elem(area.xmin, y);
const float *value = input_value->get_elem(area.xmin, y);
for (int x = area.xmin; x < area.xmax; x++) {
const float op_rx = x / op_last_x;
const float dx = op_rx - data_->x;
const float rx = data_->x + (cosine_ * dx + sine_ * dy);
const float ry = data_->y + (-sine_ * dx + cosine_ * dy);
float sx = rx - data_->x;
sx *= sx;
float sy = ry - data_->y;
sy *= sy;
const bool inside = ((sx / tx) + (sy / ty)) <= (1.0f + FLT_EPSILON);
out[0] = mask_func(inside, mask, value);
mask += input_mask->elem_stride;
value += input_value->elem_stride;
out += output->elem_stride;
}
}
}
void EllipseMaskOperation::deinit_execution()
{
input_mask_ = nullptr;
input_value_ = nullptr;
}
} // namespace blender::compositor
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