blender::geometry::curve_constraints Namespace Reference

Functions
void	compute_segment_lengths (OffsetIndices< int > points_by_curve, Span< float3 > positions, const IndexMask &curve_selection, MutableSpan< float > r_segment_lengths)
void	solve_length_constraints (OffsetIndices< int > points_by_curve, const IndexMask &curve_selection, Span< float > segment_lenghts, MutableSpan< float3 > positions)
void	solve_length_and_collision_constraints (OffsetIndices< int > points_by_curve, const IndexMask &curve_selection, Span< float > segment_lengths, Span< float3 > start_positions, const Mesh &surface, const bke::CurvesSurfaceTransforms &transforms, MutableSpan< float3 > positions)

Detailed Description

The code below uses a prefix naming convention to indicate the coordinate space: cu: Local space of the curves object that is being edited. su: Local space of the surface object. wo: World space.

Function Documentation

compute_segment_lengths()

void blender::geometry::curve_constraints::compute_segment_lengths	(	OffsetIndices< int >	points_by_curve,
		Span< float3 >	positions,
		const IndexMask &	curve_selection,
		MutableSpan< float >	r_segment_lengths )

Definition at line 21 of file curve_constraints.cc.

References BLI_assert, blender::math::distance(), blender::index_mask::IndexMask::foreach_segment(), length(), blender::MutableSpan< T >::size(), and blender::offset_indices::OffsetIndices< T >::total_size().

Referenced by blender::ed::sculpt_paint::CurvesConstraintSolver::initialize().

solve_length_and_collision_constraints()

void blender::geometry::curve_constraints::solve_length_and_collision_constraints	(	OffsetIndices< int >	points_by_curve,
		const IndexMask &	curve_selection,
		Span< float >	segment_lengths,
		Span< float3 >	start_positions,
		const Mesh &	surface,
		const bke::CurvesSurfaceTransforms &	transforms,
		MutableSpan< float3 >	positions )

Definition at line 62 of file curve_constraints.cc.

References BKE_bvhtree_from_mesh_get(), BLI_bvhtree_ray_cast(), BLI_SCOPED_DEFER, BVHTREE_FROM_CORNER_TRIS, blender::MutableSpan< T >::copy_from(), blender::bke::CurvesSurfaceTransforms::curves_to_surface, blender::math::dot(), blender::index_mask::IndexMask::foreach_segment(), free_bvhtree_from_mesh(), BVHTreeRayHit::index, blender::math::length_squared(), blender::math::normalize(), blender::math::normalize_and_get_length(), pow2f(), BVHTreeFromMesh::raycast_callback, blender::MutableSpan< T >::slice(), blender::Span< T >::slice(), solve_length_constraints(), blender::bke::CurvesSurfaceTransforms::surface_to_curves, blender::bke::CurvesSurfaceTransforms::surface_to_curves_normal, blender::math::transform_direction(), blender::math::transform_point(), and BVHTreeFromMesh::tree.

Referenced by blender::ed::sculpt_paint::CurvesConstraintSolver::solve_step().

solve_length_constraints()

void blender::geometry::curve_constraints::solve_length_constraints	(	OffsetIndices< int >	points_by_curve,
		const IndexMask &	curve_selection,
		Span< float >	segment_lenghts,
		MutableSpan< float3 >	positions )

Definition at line 41 of file curve_constraints.cc.

References BLI_assert, blender::index_mask::IndexMask::foreach_segment(), blender::math::normalize(), blender::Span< T >::size(), and blender::offset_indices::OffsetIndices< T >::total_size().

Referenced by solve_length_and_collision_constraints(), and blender::ed::sculpt_paint::CurvesConstraintSolver::solve_step().