Differential D14877 Diff 51346 source/blender/geometry/intern/resample_curves.cc

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source/blender/geometry/intern/resample_curves.cc

/* SPDX-License-Identifier: GPL-2.0-or-later */		/* SPDX-License-Identifier: GPL-2.0-or-later */

#include "BLI_length_parameterize.hh"		#include "BLI_length_parameterize.hh"
#include "BLI_task.hh"		#include "BLI_task.hh"

#include "FN_field.hh"		#include "FN_field.hh"
#include "FN_multi_function_builder.hh"		#include "FN_multi_function_builder.hh"

#include "BKE_attribute_math.hh"		#include "BKE_attribute_math.hh"
#include "BKE_curves.hh"		#include "BKE_curves.hh"
		#include "BKE_curves_utils.hh"
#include "BKE_geometry_fields.hh"		#include "BKE_geometry_fields.hh"

#include "GEO_resample_curves.hh"		#include "GEO_resample_curves.hh"

namespace blender::geometry {		namespace blender::geometry {

static fn::Field<int> get_count_input_max_one(const fn::Field<int> &count_field)		static fn::Field<int> get_count_input_max_one(const fn::Field<int> &count_field)
{		{
▲ Show 20 Lines • Show All 172 Lines • ▼ Show 20 Lines	static void copy_between_curves(const bke::CurvesGeometry &src_curves,
const GMutableSpan dst)		const GMutableSpan dst)
{		{
attribute_math::convert_to_static_type(src.type(), [&](auto dummy) {		attribute_math::convert_to_static_type(src.type(), [&](auto dummy) {
using T = decltype(dummy);		using T = decltype(dummy);
copy_between_curves(src_curves, dst_curves, unselected_ranges, src.typed<T>(), dst.typed<T>());		copy_between_curves(src_curves, dst_curves, unselected_ranges, src.typed<T>(), dst.typed<T>());
});		});
}		}

/**
* Copy the size of every curve in #curve_ranges to the corresponding index in #counts.
*/
static void fill_curve_counts(const bke::CurvesGeometry &src_curves,
const Span<IndexRange> curve_ranges,
MutableSpan<int> counts)
{
threading::parallel_for(curve_ranges.index_range(), 512, [&](IndexRange ranges_range) {
for (const IndexRange curves_range : curve_ranges.slice(ranges_range)) {
for (const int i : curves_range) {
counts[i] = src_curves.points_for_curve(i).size();
}
}
});
}

/**
* Turn an array of sizes into the offset at each index including all previous sizes.
*/
static void accumulate_counts_to_offsets(MutableSpan<int> counts_to_offsets)
{
int total = 0;
for (const int i : counts_to_offsets.index_range().drop_back(1)) {
const int count = counts_to_offsets[i];
BLI_assert(count > 0);
counts_to_offsets[i] = total;
total += count;
}
counts_to_offsets.last() = total;
}

static Curves *resample_to_uniform(const CurveComponent &src_component,		static Curves *resample_to_uniform(const CurveComponent &src_component,
const fn::Field<bool> &selection_field,		const fn::Field<bool> &selection_field,
const fn::Field<int> &count_field)		const fn::Field<int> &count_field)
{		{
const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(		const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(
src_component.get_for_read()->geometry);		src_component.get_for_read()->geometry);

/* Create the new curves without any points and evaluate the final count directly		/* Create the new curves without any points and evaluate the final count directly
Show All 14 Lines	static Curves *resample_to_uniform(const CurveComponent &src_component,
evaluator.set_selection(selection_field);		evaluator.set_selection(selection_field);
evaluator.add_with_destination(count_field, dst_offsets);		evaluator.add_with_destination(count_field, dst_offsets);
evaluator.evaluate();		evaluator.evaluate();
const IndexMask selection = evaluator.get_evaluated_selection_as_mask();		const IndexMask selection = evaluator.get_evaluated_selection_as_mask();
const Vector<IndexRange> unselected_ranges = selection.extract_ranges_invert(		const Vector<IndexRange> unselected_ranges = selection.extract_ranges_invert(
src_curves.curves_range(), nullptr);		src_curves.curves_range(), nullptr);

/* Fill the counts for the curves that aren't selected and accumulate the counts into offsets. */		/* Fill the counts for the curves that aren't selected and accumulate the counts into offsets. */
fill_curve_counts(src_curves, unselected_ranges, dst_offsets);		bke::curves::fill_curve_counts(src_curves, unselected_ranges, dst_offsets);
accumulate_counts_to_offsets(dst_offsets);		bke::curves::accumulate_counts_to_offsets(dst_offsets);
dst_curves.resize(dst_offsets.last(), dst_curves.curves_num());		dst_curves.resize(dst_offsets.last(), dst_curves.curves_num());

/* All resampled curves are poly curves. */		/* All resampled curves are poly curves. */
dst_curves.fill_curve_types(selection, CURVE_TYPE_POLY);		dst_curves.fill_curve_types(selection, CURVE_TYPE_POLY);

VArray<bool> curves_cyclic = src_curves.cyclic();		VArray<bool> curves_cyclic = src_curves.cyclic();
VArray<int8_t> curve_types = src_curves.curve_types();		VArray<int8_t> curve_types = src_curves.curve_types();
Span<float3> evaluated_positions = src_curves.evaluated_positions();		Span<float3> evaluated_positions = src_curves.evaluated_positions();
▲ Show 20 Lines • Show All 153 Lines • ▼ Show 20 Lines	Curves *resample_to_evaluated(const CurveComponent &src_component,
MutableSpan<int> dst_offsets = dst_curves.offsets_for_write();		MutableSpan<int> dst_offsets = dst_curves.offsets_for_write();

src_curves.ensure_evaluated_offsets();		src_curves.ensure_evaluated_offsets();
threading::parallel_for(selection.index_range(), 4096, [&](IndexRange range) {		threading::parallel_for(selection.index_range(), 4096, [&](IndexRange range) {
for (const int i : selection.slice(range)) {		for (const int i : selection.slice(range)) {
dst_offsets[i] = src_curves.evaluated_points_for_curve(i).size();		dst_offsets[i] = src_curves.evaluated_points_for_curve(i).size();
}		}
});		});
fill_curve_counts(src_curves, unselected_ranges, dst_offsets);		bke::curves::fill_curve_counts(src_curves, unselected_ranges, dst_offsets);
accumulate_counts_to_offsets(dst_offsets);		bke::curves::accumulate_counts_to_offsets(dst_offsets);

dst_curves.resize(dst_offsets.last(), dst_curves.curves_num());		dst_curves.resize(dst_offsets.last(), dst_curves.curves_num());

/* Create the correct number of uniform-length samples for every selected curve. */		/* Create the correct number of uniform-length samples for every selected curve. */
Span<float3> evaluated_positions = src_curves.evaluated_positions();		Span<float3> evaluated_positions = src_curves.evaluated_positions();
MutableSpan<float3> dst_positions = dst_curves.positions_for_write();		MutableSpan<float3> dst_positions = dst_curves.positions_for_write();

AttributesForInterpolation attributes;		AttributesForInterpolation attributes;
▲ Show 20 Lines • Show All 64 Lines • Show Last 20 Lines