7a395e2e7f
The last good commit wasf57e4c5b98. After this one more fix was committed, this one is preserved as well:67bd678887.
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
/* SPDX-FileCopyrightText: 2011 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "COM_ProjectorLensDistortionOperation.h"
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#include "COM_ConstantOperation.h"
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namespace blender::compositor {
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ProjectorLensDistortionOperation::ProjectorLensDistortionOperation()
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{
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this->add_input_socket(DataType::Color);
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this->add_input_socket(DataType::Value);
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this->add_output_socket(DataType::Color);
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flags_.can_be_constant = true;
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dispersion_ = 0.0f;
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}
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void ProjectorLensDistortionOperation::init_data()
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{
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NodeOperation *dispersion_input = get_input_operation(1);
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if (dispersion_input->get_flags().is_constant_operation) {
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dispersion_ = static_cast<ConstantOperation *>(dispersion_input)->get_constant_elem()[0];
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}
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kr_ = 0.25f * max_ff(min_ff(dispersion_, 1.0f), 0.0f);
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kr2_ = kr_ * 20;
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}
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void ProjectorLensDistortionOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
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{
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set_determined_canvas_modifier([=](rcti &canvas) {
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/* Ensure screen space. */
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BLI_rcti_translate(&canvas, -canvas.xmin, -canvas.ymin);
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});
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NodeOperation::determine_canvas(preferred_area, r_area);
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}
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void ProjectorLensDistortionOperation::get_area_of_interest(const int input_idx,
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const rcti &output_area,
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rcti &r_input_area)
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{
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if (input_idx == 1) {
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/* Dispersion input is used as constant only. */
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r_input_area = COM_CONSTANT_INPUT_AREA_OF_INTEREST;
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return;
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}
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r_input_area.ymax = output_area.ymax;
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r_input_area.ymin = output_area.ymin;
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r_input_area.xmin = output_area.xmin - kr2_ - 2;
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r_input_area.xmax = output_area.xmax + kr2_ + 2;
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}
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void ProjectorLensDistortionOperation::update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs)
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{
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const MemoryBuffer *input_image = inputs[0];
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const float height = this->get_height();
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const float width = this->get_width();
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float color[4];
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for (BuffersIterator<float> it = output->iterate_with({}, area); !it.is_end(); ++it) {
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const float v = (it.y + 0.5f) / height;
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const float u = (it.x + 0.5f) / width;
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input_image->read_elem_bilinear((u * width + kr2_) - 0.5f, v * height - 0.5f, color);
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it.out[0] = color[0];
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input_image->read_elem(it.x, it.y, color);
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it.out[1] = color[1];
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input_image->read_elem_bilinear((u * width - kr2_) - 0.5f, v * height - 0.5f, color);
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it.out[2] = color[2];
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it.out[3] = 1.0f;
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}
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}
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} // namespace blender::compositor
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