7a395e2e7f
The last good commit wasf57e4c5b98. After this one more fix was committed, this one is preserved as well:67bd678887.
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* SPDX-FileCopyrightText: 2012 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "COM_MapRangeOperation.h"
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namespace blender::compositor {
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MapRangeOperation::MapRangeOperation()
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{
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this->add_input_socket(DataType::Value);
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this->add_input_socket(DataType::Value);
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this->add_input_socket(DataType::Value);
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this->add_input_socket(DataType::Value);
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this->add_input_socket(DataType::Value);
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this->add_output_socket(DataType::Value);
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use_clamp_ = false;
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flags_.can_be_constant = true;
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}
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/* The code below assumes all data is inside range +- this, and that input buffer is single channel
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*/
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#define BLENDER_ZMAX 10000.0f
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void MapRangeOperation::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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for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
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const float source_min = *it.in(1);
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const float source_max = *it.in(2);
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if (fabsf(source_max - source_min) < 1e-6f) {
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it.out[0] = 0.0f;
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continue;
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}
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float value = *it.in(0);
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const float dest_min = *it.in(3);
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const float dest_max = *it.in(4);
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if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) {
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value = (value - source_min) / (source_max - source_min);
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value = dest_min + value * (dest_max - dest_min);
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}
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else if (value > BLENDER_ZMAX) {
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value = dest_max;
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}
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else {
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value = dest_min;
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}
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if (use_clamp_) {
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if (dest_max > dest_min) {
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CLAMP(value, dest_min, dest_max);
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}
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else {
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CLAMP(value, dest_max, dest_min);
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}
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}
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it.out[0] = value;
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}
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}
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} // namespace blender::compositor
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