blender::bke::curves::catmull_rom Namespace Reference

Functions
int	calculate_evaluated_num (int points_num, bool cyclic, int resolution)
void	interpolate_to_evaluated (GSpan src, bool cyclic, int resolution, GMutableSpan dst)
void	interpolate_to_evaluated (const GSpan src, const bool cyclic, const OffsetIndices< int > evaluated_offsets, GMutableSpan dst)
float4	calculate_basis (const float parameter)
template<typename T >
T	interpolate (const T &a, const T &b, const T &c, const T &d, const float parameter)
template<typename T >
static void	evaluate_segment (const T &a, const T &b, const T &c, const T &d, MutableSpan< T > dst)
template<typename T , typename RangeForSegmentFn >
static void	interpolate_to_evaluated (const Span< T > src, const bool cyclic, const RangeForSegmentFn &range_fn, MutableSpan< T > dst)
template<typename T >
static void	interpolate_to_evaluated (const Span< T > src, const bool cyclic, const int resolution, MutableSpan< T > dst)
template<typename T >
static void	interpolate_to_evaluated (const Span< T > src, const bool cyclic, const OffsetIndices< int > evaluated_offsets, MutableSpan< T > dst)

Function Documentation

calculate_basis()

float4 blender::bke::curves::catmull_rom::calculate_basis

(

const float

parameter

)

Definition at line 27 of file curve_catmull_rom.cc.

Referenced by interpolate().

calculate_evaluated_num()

int blender::bke::curves::catmull_rom::calculate_evaluated_num	(	int	points_num,
		bool	cyclic,
		int	resolution )

Calculate the number of evaluated points that interpolate_to_evaluated is expected to produce.

Parameters

points_num	The number of points in the curve.
resolution	The resolution for each segment.

Definition at line 16 of file curve_catmull_rom.cc.

References blender::bke::curves::segments_num().

Referenced by interpolate_to_evaluated().

evaluate_segment()

template<typename T >

static void blender::bke::curves::catmull_rom::evaluate_segment ( const T & a, const T & b, const T & c, const T & d, MutableSpan< T > dst )

static

Definition at line 41 of file curve_catmull_rom.cc.

References b, blender::IndexRange::drop_front(), blender::MutableSpan< T >::first(), blender::MutableSpan< T >::index_range(), interpolate(), and blender::MutableSpan< T >::size().

Referenced by interpolate_to_evaluated().

interpolate()

template<typename T >

T blender::bke::curves::catmull_rom::interpolate	(	const T &	a,
		const T &	b,
		const T &	c,
		const T &	d,
		const float	parameter )

Interpolate the control point values for the given parameter on the piecewise segment.

Parameters

a	Value associated with the first control point influencing the segment.
d	Value associated with the fourth control point.
parameter	Parameter in range [0, 1] to compute the interpolation for.

Definition at line 750 of file BKE_curves.hh.

References b, BLI_assert, calculate_basis(), blender::is_same_any_v, and blender::bke::attribute_math::mix4().

Referenced by evaluate_segment(), and blender::geometry::interpolate_catmull_rom().

interpolate_to_evaluated() [1/5]

void blender::bke::curves::catmull_rom::interpolate_to_evaluated	(	const GSpan	src,
		const bool	cyclic,
		const OffsetIndices< int >	evaluated_offsets,
		GMutableSpan	dst )

Evaluate the Catmull Rom curve. The placement of each segment in the #dst span is described by #evaluated_offsets.

Definition at line 156 of file curve_catmull_rom.cc.

References blender::bke::attribute_math::convert_to_static_type(), and blender::GSpan::type().

interpolate_to_evaluated() [2/5]

template<typename T >

static void blender::bke::curves::catmull_rom::interpolate_to_evaluated ( const Span< T > src, const bool cyclic, const int resolution, MutableSpan< T > dst )

static

Definition at line 113 of file curve_catmull_rom.cc.

References BLI_assert, calculate_evaluated_num(), interpolate_to_evaluated(), blender::MutableSpan< T >::size(), and blender::Span< T >::size().

interpolate_to_evaluated() [3/5]

template<typename T >

static void blender::bke::curves::catmull_rom::interpolate_to_evaluated ( const Span< T > src, const bool cyclic, const OffsetIndices< int > evaluated_offsets, MutableSpan< T > dst )

static

Definition at line 130 of file curve_catmull_rom.cc.

References interpolate_to_evaluated().

interpolate_to_evaluated() [4/5]

template<typename T , typename RangeForSegmentFn >

static void blender::bke::curves::catmull_rom::interpolate_to_evaluated ( const Span< T > src, const bool cyclic, const RangeForSegmentFn & range_fn, MutableSpan< T > dst )

static

Parameters

range_fn

Returns an index range describing where in the #dst span each segment should be evaluated to, and how many points to add to it. This is used to avoid the need to allocate an actual offsets array in typical evaluation use cases where the resolution is per-curve.

Definition at line 56 of file curve_catmull_rom.cc.

References blender::IndexRange::drop_back(), blender::IndexRange::drop_front(), evaluate_segment(), blender::MutableSpan< T >::first(), blender::Span< T >::first(), blender::Span< T >::index_range(), blender::IndexRange::last(), blender::MutableSpan< T >::last(), blender::Span< T >::last(), blender::threading::parallel_for(), range, blender::Span< T >::size(), and blender::MutableSpan< T >::slice().

interpolate_to_evaluated() [5/5]

void blender::bke::curves::catmull_rom::interpolate_to_evaluated	(	GSpan	src,
		bool	cyclic,
		int	resolution,
		GMutableSpan	dst )

Evaluate the Catmull Rom curve. The length of the #dst span should be calculated with calculate_evaluated_num and is expected to divide evenly by the #src span's segment size.

Definition at line 145 of file curve_catmull_rom.cc.

References blender::bke::attribute_math::convert_to_static_type(), and blender::GSpan::type().

Referenced by interpolate_to_evaluated(), and interpolate_to_evaluated().