c1bc70b711
A lot of files were missing copyright field in the header and
the Blender Foundation contributed to them in a sense of bug
fixing and general maintenance.
This change makes it explicit that those files are at least
partially copyrighted by the Blender Foundation.
Note that this does not make it so the Blender Foundation is
the only holder of the copyright in those files, and developers
who do not have a signed contract with the foundation still
hold the copyright as well.
Another aspect of this change is using SPDX format for the
header. We already used it for the license specification,
and now we state it for the copyright as well, following the
FAQ:
https://reuse.software/faq/
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BLI_length_parameterize.hh"
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#include "BLI_task.hh"
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namespace blender::length_parameterize {
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void sample_uniform(const Span<float> lengths,
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const bool include_last_point,
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MutableSpan<int> r_segment_indices,
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MutableSpan<float> r_factors)
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{
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const int count = r_segment_indices.size();
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BLI_assert(count > 0);
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BLI_assert(lengths.size() >= 1);
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BLI_assert(std::is_sorted(lengths.begin(), lengths.end()));
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if (count == 1) {
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r_segment_indices[0] = 0;
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r_factors[0] = 0.0f;
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return;
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}
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const float total_length = lengths.last();
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const float step_length = total_length / (count - include_last_point);
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threading::parallel_for(IndexRange(count), 512, [&](const IndexRange range) {
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SampleSegmentHint hint;
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for (const int i : range) {
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/* Use minimum to avoid issues with floating point accuracy. */
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const float sample_length = std::min(total_length, i * step_length);
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sample_at_length(lengths, sample_length, r_segment_indices[i], r_factors[i], &hint);
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}
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});
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}
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void sample_at_lengths(const Span<float> accumulated_segment_lengths,
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const Span<float> sample_lengths,
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MutableSpan<int> r_segment_indices,
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MutableSpan<float> r_factors)
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{
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BLI_assert(
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std::is_sorted(accumulated_segment_lengths.begin(), accumulated_segment_lengths.end()));
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BLI_assert(std::is_sorted(sample_lengths.begin(), sample_lengths.end()));
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const int count = sample_lengths.size();
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BLI_assert(count == r_segment_indices.size());
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BLI_assert(count == r_factors.size());
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threading::parallel_for(IndexRange(count), 512, [&](const IndexRange range) {
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SampleSegmentHint hint;
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for (const int i : range) {
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const float sample_length = sample_lengths[i];
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sample_at_length(
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accumulated_segment_lengths, sample_length, r_segment_indices[i], r_factors[i], &hint);
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}
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});
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}
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} // namespace blender::length_parameterize
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