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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_BoxMaskOperation.h"
namespace blender::compositor {
BoxMaskOperation::BoxMaskOperation()
{
this->addInputSocket(DataType::Value);
this->addInputSocket(DataType::Value);
this->addOutputSocket(DataType::Value);
inputMask_ = nullptr;
inputValue_ = nullptr;
cosine_ = 0.0f;
sine_ = 0.0f;
}
void BoxMaskOperation::initExecution()
{
inputMask_ = this->getInputSocketReader(0);
inputValue_ = this->getInputSocketReader(1);
const double rad = (double)data_->rotation;
cosine_ = cos(rad);
sine_ = sin(rad);
aspectRatio_ = ((float)this->getWidth()) / this->getHeight();
}
void BoxMaskOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
float inputMask[4];
float inputValue[4];
float rx = x / this->getWidth();
float ry = y / this->getHeight();
const float dy = (ry - data_->y) / aspectRatio_;
const float dx = rx - data_->x;
rx = data_->x + (cosine_ * dx + sine_ * dy);
ry = data_->y + (-sine_ * dx + cosine_ * dy);
inputMask_->readSampled(inputMask, x, y, sampler);
inputValue_->readSampled(inputValue, x, y, sampler);
float halfHeight = data_->height / 2.0f;
float halfWidth = data_->width / 2.0f;
bool inside = (rx > data_->x - halfWidth && rx < data_->x + halfWidth &&
ry > data_->y - halfHeight && ry < data_->y + halfHeight);
switch (maskType_) {
case CMP_NODE_MASKTYPE_ADD:
if (inside) {
output[0] = MAX2(inputMask[0], inputValue[0]);
}
else {
output[0] = inputMask[0];
}
break;
case CMP_NODE_MASKTYPE_SUBTRACT:
if (inside) {
output[0] = inputMask[0] - inputValue[0];
CLAMP(output[0], 0, 1);
}
else {
output[0] = inputMask[0];
}
break;
case CMP_NODE_MASKTYPE_MULTIPLY:
if (inside) {
output[0] = inputMask[0] * inputValue[0];
}
else {
output[0] = 0;
}
break;
case CMP_NODE_MASKTYPE_NOT:
if (inside) {
if (inputMask[0] > 0.0f) {
output[0] = 0;
}
else {
output[0] = inputValue[0];
}
}
else {
output[0] = inputMask[0];
}
break;
}
}
void BoxMaskOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
MaskFunc mask_func;
switch (maskType_) {
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 BoxMaskOperation::apply_mask(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs,
MaskFunc mask_func)
{
const float op_w = this->getWidth();
const float op_h = this->getHeight();
const float half_w = data_->width / 2.0f;
const float half_h = data_->height / 2.0f;
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float op_ry = it.y / op_h;
const float dy = (op_ry - data_->y) / aspectRatio_;
const float op_rx = it.x / op_w;
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);
const bool inside = (rx > data_->x - half_w && rx < data_->x + half_w &&
ry > data_->y - half_h && ry < data_->y + half_h);
const float *mask = it.in(0);
const float *value = it.in(1);
*it.out = mask_func(inside, mask, value);
}
}
void BoxMaskOperation::deinitExecution()
{
inputMask_ = nullptr;
inputValue_ = nullptr;
}
} // namespace blender::compositor
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