blender::ed::greasepencil::trim Namespace Reference

Classes
struct	Segment
struct	Segments

Enumerations
enum	Side : uint8_t { Start = 0 , End = 1 }
enum	Distance : uint8_t { Min = 0 , Max = 1 }

Functions
static float	get_intersection_distance_of_segments (const float2 &co_a, const float2 &co_b, const float2 &co_c, const float2 &co_d)
static void	get_intersections_of_curve_with_curves (const int src_curve, const bke::CurvesGeometry &src, const Span< float2 > screen_space_positions, const Span< rcti > screen_space_curve_bounds, MutableSpan< bool > r_is_intersected_after_point, MutableSpan< float2 > r_intersection_distance)
static void	expand_trim_segment_direction (Segment &segment, const int direction, const bke::CurvesGeometry &src, const Span< bool > is_intersected_after_point, const Span< float2 > intersection_distance, MutableSpan< bool > point_is_in_segment)
static void	expand_trim_segment (Segment &segment, const bke::CurvesGeometry &src, const Span< bool > is_intersected_after_point, const Span< float2 > intersection_distance, MutableSpan< bool > point_is_in_segment)
bke::CurvesGeometry	trim_curve_segments (const bke::CurvesGeometry &src, const Span< float2 > screen_space_positions, const Span< rcti > screen_space_curve_bounds, const IndexMask &curve_selection, const Vector< Vector< int > > &selected_points_in_curves, const bool keep_caps)

Variables
static constexpr int	BBOX_PADDING = 2
static constexpr float	DISTANCE_FACTOR_THRESHOLD = 0.01f

Enumeration Type Documentation

Distance

enum blender::ed::greasepencil::trim::Distance : uint8_t

Enumerator
Min
Max

Definition at line 907 of file grease_pencil_geom.cc.

Side

enum blender::ed::greasepencil::trim::Side : uint8_t

Enumerator
Start
End

Definition at line 906 of file grease_pencil_geom.cc.

Function Documentation

expand_trim_segment()

void blender::ed::greasepencil::trim::expand_trim_segment ( Segment & segment, const bke::CurvesGeometry & src, const Span< bool > is_intersected_after_point, const Span< float2 > intersection_distance, MutableSpan< bool > point_is_in_segment )

static

Expand a trim segment of one point by walking along the curve in both directions.

Definition at line 1230 of file grease_pencil_geom.cc.

References expand_trim_segment(), and expand_trim_segment_direction().

Referenced by expand_trim_segment(), and trim_curve_segments().

expand_trim_segment_direction()

void blender::ed::greasepencil::trim::expand_trim_segment_direction ( Segment & segment, const int direction, const bke::CurvesGeometry & src, const Span< bool > is_intersected_after_point, const Span< float2 > intersection_distance, MutableSpan< bool > point_is_in_segment )

static

Expand a trim segment by walking along the curve in forward or backward direction. A trim segments ends at an intersection with another curve, or at the outer end of the curve.

Definition at line 1154 of file grease_pencil_geom.cc.

References DISTANCE_FACTOR_THRESHOLD, End, expand_trim_segment_direction(), Max, Min, blender::bke::CurvesGeometry::points_by_curve(), and Start.

Referenced by expand_trim_segment(), and expand_trim_segment_direction().

get_intersection_distance_of_segments()

float blender::ed::greasepencil::trim::get_intersection_distance_of_segments ( const float2 & co_a, const float2 & co_b, const float2 & co_c, const float2 & co_d )

static

Get the intersection distance of two line segments a-b and c-d. The intersection distance is defined as the normalized distance (0..1) from point a to the intersection point of a-b and c-d.

Definition at line 1017 of file grease_pencil_geom.cc.

References blender::math::clamp(), distance(), get_intersection_distance_of_segments(), and blender::math::length().

Referenced by get_intersection_distance_of_segments(), and get_intersections_of_curve_with_curves().

get_intersections_of_curve_with_curves()

void blender::ed::greasepencil::trim::get_intersections_of_curve_with_curves ( const int src_curve, const bke::CurvesGeometry & src, const Span< float2 > screen_space_positions, const Span< rcti > screen_space_curve_bounds, MutableSpan< bool > r_is_intersected_after_point, MutableSpan< float2 > r_intersection_distance )

static

For a curve, find all intersections with other curves.

Definition at line 1050 of file grease_pencil_geom.cc.

References BBOX_PADDING, BLI_rcti_do_minmax_v(), BLI_rcti_init_minmax(), BLI_rcti_isect(), BLI_rcti_pad(), blender::bke::CurvesGeometry::curves_range(), blender::bke::CurvesGeometry::cyclic(), ELEM, blender::IndexRange::first(), FLT_MAX, get_intersection_distance_of_segments(), get_intersections_of_curve_with_curves(), is_cyclic(), blender::math::isect_seg_seg(), Max, blender::math::max(), Min, blender::math::min(), blender::math::normalize(), blender::bke::CurvesGeometry::points_by_curve(), and size().

Referenced by get_intersections_of_curve_with_curves(), and trim_curve_segments().

trim_curve_segments()

bke::CurvesGeometry blender::ed::greasepencil::trim::trim_curve_segments	(	const bke::CurvesGeometry &	src,
		const Span< float2 >	screen_space_positions,
		const Span< rcti >	screen_space_curve_bounds,
		const IndexMask &	curve_selection,
		const Vector< Vector< int > > &	selected_points_in_curves,
		const bool	keep_caps )

Definition at line 1247 of file grease_pencil_geom.cc.

References blender::Vector< T, InlineBufferCapacity, Allocator >::append(), blender::ed::greasepencil::compute_topology_change(), blender::ed::greasepencil::trim::Segments::create_segment(), blender::bke::CurvesGeometry::curves_range(), blender::bke::CurvesGeometry::cyclic(), DISTANCE_FACTOR_THRESHOLD, End, expand_trim_segment(), blender::IndexRange::first(), blender::index_mask::IndexMask::foreach_index(), get_intersections_of_curve_with_curves(), blender::ed::greasepencil::trim::Segment::intersection_distance, is_cyclic(), blender::ed::greasepencil::trim::Segment::is_intersected, blender::IndexRange::last(), blender::threading::EnumerableThreadSpecific< T >::local(), blender::ed::greasepencil::trim::Segments::merge_adjacent_segments(), blender::ed::greasepencil::trim::Segment::point_range, blender::bke::CurvesGeometry::points_by_curve(), blender::bke::CurvesGeometry::points_num(), pos, blender::ed::greasepencil::trim::Segments::segments, Start, and trim_curve_segments().

Referenced by trim_curve_segments(), and blender::ed::sculpt_paint::greasepencil::trim_stroke_ends().

Variable Documentation

BBOX_PADDING

int blender::ed::greasepencil::trim::BBOX_PADDING = 2

staticconstexpr

Definition at line 911 of file grease_pencil_geom.cc.

Referenced by get_intersections_of_curve_with_curves().

DISTANCE_FACTOR_THRESHOLD

float blender::ed::greasepencil::trim::DISTANCE_FACTOR_THRESHOLD = 0.01f

staticconstexpr

Definition at line 915 of file grease_pencil_geom.cc.

Referenced by expand_trim_segment_direction(), and trim_curve_segments().