diff options
Diffstat (limited to 'source/blender/blenkernel/intern/spline_nurbs.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/spline_nurbs.cc | 96 |
1 files changed, 50 insertions, 46 deletions
diff --git a/source/blender/blenkernel/intern/spline_nurbs.cc b/source/blender/blenkernel/intern/spline_nurbs.cc index bfb0d652b1a..85fb9730e83 100644 --- a/source/blender/blenkernel/intern/spline_nurbs.cc +++ b/source/blender/blenkernel/intern/spline_nurbs.cc @@ -26,21 +26,28 @@ using blender::float3; using blender::IndexRange; using blender::MutableSpan; using blender::Span; +using blender::fn::GVArray; +using blender::fn::GVArray_For_ArrayContainer; using blender::fn::GVArray_Typed; +using blender::fn::GVArrayPtr; -SplinePtr NURBSpline::copy() const +void NURBSpline::copy_settings(Spline &dst) const { - return std::make_unique<NURBSpline>(*this); + NURBSpline &nurbs = static_cast<NURBSpline &>(dst); + nurbs.knots_mode = knots_mode; + nurbs.resolution_ = resolution_; + nurbs.order_ = order_; } -SplinePtr NURBSpline::copy_settings() const +void NURBSpline::copy_data(Spline &dst) const { - std::unique_ptr<NURBSpline> copy = std::make_unique<NURBSpline>(); - copy_base_settings(*this, *copy); - copy->knots_mode = knots_mode; - copy->resolution_ = resolution_; - copy->order_ = order_; - return copy; + NURBSpline &nurbs = static_cast<NURBSpline &>(dst); + nurbs.positions_ = positions_; + nurbs.weights_ = weights_; + nurbs.knots_ = knots_; + nurbs.knots_dirty_ = false; + nurbs.radii_ = radii_; + nurbs.tilts_ = tilts_; } int NURBSpline::size() const @@ -268,18 +275,18 @@ Span<float> NURBSpline::knots() const } static void calculate_basis_for_point(const float parameter, - const int points_len, + const int size, const int order, Span<float> knots, MutableSpan<float> basis_buffer, NURBSpline::BasisCache &basis_cache) { /* Clamp parameter due to floating point inaccuracy. */ - const float t = std::clamp(parameter, knots[0], knots[points_len + order - 1]); + const float t = std::clamp(parameter, knots[0], knots[size + order - 1]); int start = 0; int end = 0; - for (const int i : IndexRange(points_len + order - 1)) { + for (const int i : IndexRange(size + order - 1)) { const bool knots_equal = knots[i] == knots[i + 1]; if (knots_equal || t < knots[i] || t > knots[i + 1]) { basis_buffer[i] = 0.0f; @@ -289,14 +296,14 @@ static void calculate_basis_for_point(const float parameter, basis_buffer[i] = 1.0f; start = std::max(i - order - 1, 0); end = i; - basis_buffer.slice(i + 1, points_len + order - 1 - i).fill(0.0f); + basis_buffer.slice(i + 1, size + order - 1 - i).fill(0.0f); break; } - basis_buffer[points_len + order - 1] = 0.0f; + basis_buffer[size + order - 1] = 0.0f; for (const int i_order : IndexRange(2, order - 1)) { - if (end + i_order >= points_len + order) { - end = points_len + order - 1 - i_order; + if (end + i_order >= size + order) { + end = size + order - 1 - i_order; } for (const int i : IndexRange(start, end - start + 1)) { float new_basis = 0.0f; @@ -326,18 +333,18 @@ static void calculate_basis_for_point(const float parameter, basis_cache.start_index = start; } -void NURBSpline::calculate_basis_cache() const +Span<NURBSpline::BasisCache> NURBSpline::calculate_basis_cache() const { if (!basis_cache_dirty_) { - return; + return basis_cache_; } std::lock_guard lock{basis_cache_mutex_}; if (!basis_cache_dirty_) { - return; + return basis_cache_; } - const int points_len = this->size(); + const int size = this->size(); const int eval_size = this->evaluated_points_size(); BLI_assert(this->evaluated_edges_size() > 0); basis_cache_.resize(eval_size); @@ -353,17 +360,17 @@ void NURBSpline::calculate_basis_cache() const Array<float> basis_buffer(this->knots_size()); const float start = knots[order - 1]; - const float end = is_cyclic_ ? knots[points_len + order - 1] : knots[points_len]; + const float end = is_cyclic_ ? knots[size + order - 1] : knots[size]; const float step = (end - start) / this->evaluated_edges_size(); float parameter = start; for (const int i : IndexRange(eval_size)) { BasisCache &basis = basis_cache[i]; calculate_basis_for_point( - parameter, points_len + (is_cyclic_ ? order - 1 : 0), order, knots, basis_buffer, basis); + parameter, size + (is_cyclic_ ? order - 1 : 0), order, knots, basis_buffer, basis); BLI_assert(basis.weights.size() <= order); for (const int j : basis.weights.index_range()) { - const int point_index = (basis.start_index + j) % points_len; + const int point_index = (basis.start_index + j) % size; basis.weights[j] *= control_weights[point_index]; } @@ -371,50 +378,47 @@ void NURBSpline::calculate_basis_cache() const } basis_cache_dirty_ = false; + return basis_cache_; } template<typename T> -void interpolate_to_evaluated_points_impl(Span<NURBSpline::BasisCache> weights, - const blender::VArray<T> &source_data, - MutableSpan<T> result_data) +void interpolate_to_evaluated_impl(Span<NURBSpline::BasisCache> weights, + const blender::VArray<T> &src, + MutableSpan<T> dst) { - const int points_len = source_data.size(); - BLI_assert(result_data.size() == weights.size()); - blender::attribute_math::DefaultMixer<T> mixer(result_data); + const int size = src.size(); + BLI_assert(dst.size() == weights.size()); + blender::attribute_math::DefaultMixer<T> mixer(dst); - for (const int i : result_data.index_range()) { + for (const int i : dst.index_range()) { Span<float> point_weights = weights[i].weights; const int start_index = weights[i].start_index; - for (const int j : point_weights.index_range()) { - const int point_index = (start_index + j) % points_len; - mixer.mix_in(i, source_data[point_index], point_weights[j]); + const int point_index = (start_index + j) % size; + mixer.mix_in(i, src[point_index], point_weights[j]); } } mixer.finalize(); } -blender::fn::GVArrayPtr NURBSpline::interpolate_to_evaluated_points( - const blender::fn::GVArray &source_data) const +GVArrayPtr NURBSpline::interpolate_to_evaluated(const GVArray &src) const { - BLI_assert(source_data.size() == this->size()); + BLI_assert(src.size() == this->size()); - if (source_data.is_single()) { - return source_data.shallow_copy(); + if (src.is_single()) { + return src.shallow_copy(); } - this->calculate_basis_cache(); - Span<BasisCache> weights(basis_cache_); + Span<BasisCache> basis_cache = this->calculate_basis_cache(); - blender::fn::GVArrayPtr new_varray; - blender::attribute_math::convert_to_static_type(source_data.type(), [&](auto dummy) { + GVArrayPtr new_varray; + blender::attribute_math::convert_to_static_type(src.type(), [&](auto dummy) { using T = decltype(dummy); if constexpr (!std::is_void_v<blender::attribute_math::DefaultMixer<T>>) { Array<T> values(this->evaluated_points_size()); - interpolate_to_evaluated_points_impl<T>(weights, source_data.typed<T>(), values); - new_varray = std::make_unique<blender::fn::GVArray_For_ArrayContainer<Array<T>>>( - std::move(values)); + interpolate_to_evaluated_impl<T>(basis_cache, src.typed<T>(), values); + new_varray = std::make_unique<GVArray_For_ArrayContainer<Array<T>>>(std::move(values)); } }); @@ -436,7 +440,7 @@ Span<float3> NURBSpline::evaluated_positions() const evaluated_position_cache_.resize(eval_size); /* TODO: Avoid copying the evaluated data from the temporary array. */ - GVArray_Typed<float3> evaluated = Spline::interpolate_to_evaluated_points(positions_.as_span()); + GVArray_Typed<float3> evaluated = Spline::interpolate_to_evaluated(positions_.as_span()); evaluated->materialize(evaluated_position_cache_); position_cache_dirty_ = false; |