diff options
Diffstat (limited to 'source/blender/blenkernel/intern/curve_eval.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/curve_eval.cc | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/curve_eval.cc b/source/blender/blenkernel/intern/curve_eval.cc index 8529e7ad194..78dafe34b4f 100644 --- a/source/blender/blenkernel/intern/curve_eval.cc +++ b/source/blender/blenkernel/intern/curve_eval.cc @@ -13,6 +13,8 @@ #include "BKE_anonymous_attribute.hh" #include "BKE_curve.h" +#include "BKE_curves.hh" +#include "BKE_geometry_set.hh" #include "BKE_spline.hh" using blender::Array; @@ -23,8 +25,15 @@ using blender::Map; using blender::MutableSpan; using blender::Span; using blender::StringRefNull; +using blender::VArray; +using blender::VArray_Span; using blender::Vector; using blender::bke::AttributeIDRef; +using blender::bke::OutputAttribute; +using blender::bke::OutputAttribute_Typed; +using blender::bke::ReadAttributeLookup; +using blender::fn::GVArray; +using blender::fn::GVArray_GSpan; blender::Span<SplinePtr> CurveEval::splines() const { @@ -336,6 +345,186 @@ std::unique_ptr<CurveEval> curve_eval_from_dna_curve(const Curve &dna_curve) return curve_eval_from_dna_curve(dna_curve, *BKE_curve_nurbs_get_for_read(&dna_curve)); } +static void copy_attributes_between_components(const GeometryComponent &src_component, + GeometryComponent &dst_component, + Span<std::string> skip) +{ + src_component.attribute_foreach( + [&](const AttributeIDRef &id, const AttributeMetaData meta_data) { + if (id.is_named() && skip.contains(id.name())) { + return true; + } + + GVArray src_attribute = src_component.attribute_try_get_for_read( + id, meta_data.domain, meta_data.data_type); + if (!src_attribute) { + return true; + } + GVArray_GSpan src_attribute_data{src_attribute}; + + OutputAttribute dst_attribute = dst_component.attribute_try_get_for_output_only( + id, meta_data.domain, meta_data.data_type); + if (!dst_attribute) { + return true; + } + dst_attribute.varray().set_all(src_attribute_data.data()); + dst_attribute.save(); + return true; + }); +} + +std::unique_ptr<CurveEval> curves_to_curve_eval(const Curves &curves) +{ + CurveComponent src_component; + src_component.replace(&const_cast<Curves &>(curves), GeometryOwnershipType::ReadOnly); + const blender::bke::CurvesGeometry &geometry = blender::bke::CurvesGeometry::wrap( + curves.geometry); + + VArray_Span<float> nurbs_weights{ + src_component.attribute_get_for_read<float>("nurbs_weight", ATTR_DOMAIN_POINT, 0.0f)}; + VArray_Span<int> nurbs_orders{ + src_component.attribute_get_for_read<int>("nurbs_order", ATTR_DOMAIN_CURVE, 4)}; + VArray_Span<int8_t> nurbs_knots_modes{ + src_component.attribute_get_for_read<int8_t>("knots_mode", ATTR_DOMAIN_CURVE, 0)}; + + VArray_Span<int8_t> handle_types_right{ + src_component.attribute_get_for_read<int8_t>("handle_type_right", ATTR_DOMAIN_POINT, 0)}; + VArray_Span<int8_t> handle_types_left{ + src_component.attribute_get_for_read<int8_t>("handle_type_left", ATTR_DOMAIN_POINT, 0)}; + + /* Create splines with the correct size and type. */ + VArray<int8_t> curve_types = geometry.curve_types(); + std::unique_ptr<CurveEval> curve_eval = std::make_unique<CurveEval>(); + for (const int curve_index : curve_types.index_range()) { + const IndexRange point_range = geometry.range_for_curve(curve_index); + + std::unique_ptr<Spline> spline; + switch (curve_types[curve_index]) { + case CURVE_TYPE_POLY: { + spline = std::make_unique<PolySpline>(); + spline->resize(point_range.size()); + break; + } + case CURVE_TYPE_BEZIER: { + std::unique_ptr<BezierSpline> bezier_spline = std::make_unique<BezierSpline>(); + bezier_spline->resize(point_range.size()); + bezier_spline->handle_types_left().copy_from(handle_types_left.slice(point_range)); + bezier_spline->handle_types_right().copy_from(handle_types_right.slice(point_range)); + + spline = std::move(bezier_spline); + break; + } + case CURVE_TYPE_NURBS: { + std::unique_ptr<NURBSpline> nurb_spline = std::make_unique<NURBSpline>(); + nurb_spline->resize(point_range.size()); + nurb_spline->weights().copy_from(nurbs_weights.slice(point_range)); + nurb_spline->set_order(nurbs_orders[curve_index]); + nurb_spline->knots_mode = static_cast<NURBSpline::KnotsMode>( + nurbs_knots_modes[curve_index]); + + spline = std::move(nurb_spline); + break; + } + case CURVE_TYPE_CATMULL_ROM: + /* Not supported yet. */ + BLI_assert_unreachable(); + continue; + } + spline->positions().fill(float3(0)); + spline->tilts().fill(0.0f); + spline->radii().fill(0.0f); + curve_eval->add_spline(std::move(spline)); + } + + CurveComponentLegacy dst_component; + dst_component.replace(curve_eval.get(), GeometryOwnershipType::Editable); + + copy_attributes_between_components(src_component, + dst_component, + {"curve_type", + "nurbs_weight", + "nurbs_order", + "knots_mode", + "handle_type_right", + "handle_type_left"}); + + return curve_eval; +} + +Curves *curve_eval_to_curves(const CurveEval &curve_eval) +{ + Curves *curves = blender::bke::curves_new_nomain(curve_eval.total_control_point_size(), + curve_eval.splines().size()); + CurveComponent dst_component; + dst_component.replace(curves, GeometryOwnershipType::Editable); + + blender::bke::CurvesGeometry &geometry = blender::bke::CurvesGeometry::wrap(curves->geometry); + geometry.offsets().copy_from(curve_eval.control_point_offsets()); + MutableSpan<int8_t> curve_types = geometry.curve_types(); + + OutputAttribute_Typed<float> nurbs_weight; + OutputAttribute_Typed<int> nurbs_order; + OutputAttribute_Typed<int8_t> nurbs_knots_mode; + if (curve_eval.has_spline_with_type(CURVE_TYPE_NURBS)) { + nurbs_weight = dst_component.attribute_try_get_for_output_only<float>("nurbs_weight", + ATTR_DOMAIN_POINT); + nurbs_order = dst_component.attribute_try_get_for_output_only<int>("nurbs_order", + ATTR_DOMAIN_CURVE); + nurbs_knots_mode = dst_component.attribute_try_get_for_output_only<int8_t>("knots_mode", + ATTR_DOMAIN_CURVE); + } + OutputAttribute_Typed<int8_t> handle_type_right; + OutputAttribute_Typed<int8_t> handle_type_left; + if (curve_eval.has_spline_with_type(CURVE_TYPE_BEZIER)) { + handle_type_right = dst_component.attribute_try_get_for_output_only<int8_t>( + "handle_type_right", ATTR_DOMAIN_POINT); + handle_type_left = dst_component.attribute_try_get_for_output_only<int8_t>("handle_type_left", + ATTR_DOMAIN_POINT); + } + + for (const int curve_index : curve_eval.splines().index_range()) { + const Spline &spline = *curve_eval.splines()[curve_index]; + curve_types[curve_index] = curve_eval.splines()[curve_index]->type(); + + const IndexRange point_range = geometry.range_for_curve(curve_index); + + switch (spline.type()) { + case CURVE_TYPE_POLY: + break; + case CURVE_TYPE_BEZIER: { + const BezierSpline &src = static_cast<const BezierSpline &>(spline); + handle_type_right.as_span().slice(point_range).copy_from(src.handle_types_right()); + handle_type_left.as_span().slice(point_range).copy_from(src.handle_types_left()); + break; + } + case CURVE_TYPE_NURBS: { + const NURBSpline &src = static_cast<const NURBSpline &>(spline); + nurbs_knots_mode.as_span()[curve_index] = static_cast<int8_t>(src.knots_mode); + nurbs_order.as_span()[curve_index] = src.order(); + nurbs_weight.as_span().slice(point_range).copy_from(src.weights()); + break; + } + case CURVE_TYPE_CATMULL_ROM: { + BLI_assert_unreachable(); + break; + } + } + } + + nurbs_weight.save(); + nurbs_order.save(); + nurbs_knots_mode.save(); + handle_type_right.save(); + handle_type_left.save(); + + CurveComponentLegacy src_component; + src_component.replace(&const_cast<CurveEval &>(curve_eval), GeometryOwnershipType::ReadOnly); + + copy_attributes_between_components(src_component, dst_component, {}); + + return curves; +} + void CurveEval::assert_valid_point_attributes() const { #ifdef DEBUG |