path2d_stroker.c File Reference

#include <gpac/path2d.h>

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Data Structures
struct	FT_StrokeBorder
struct	FT_Stroker

Macros
#define	FT_SMALL_CONIC_THRESHOLD   ( GF_PI / 6 )
#define	FT_SMALL_CUBIC_THRESHOLD   ( GF_PI / 6 )
#define	FT_IS_SMALL(x)   ( (x) > -FIX_EPSILON && (x) < FIX_EPSILON )
#define	FT_ARC_CUBIC_ANGLE   ( GF_PI / 2 )
#define	FT_SIDE_TO_ROTATE(s)   ( GF_PI2 - (s) * GF_PI )
#define	GF_PATH_DOT_LEN   1
#define	GF_PATH_DOT_SPACE   2
#define	GF_PATH_DASH_LEN   3

Enumerations
enum	FT_StrokeTags { FT_STROKE_TAG_ON = 1, FT_STROKE_TAG_CUBIC = 2, FT_STROKE_TAG_BEGIN = 4, FT_STROKE_TAG_END = 8 }

Functions
static void	ft_conic_split (GF_Point2D *base)
static Bool	ft_conic_is_small_enough (GF_Point2D *base, Fixed *angle_in, Fixed *angle_out)
static void	ft_cubic_split (GF_Point2D *base)
static Bool	ft_cubic_is_small_enough (GF_Point2D *base, Fixed *angle_in, Fixed *angle_mid, Fixed *angle_out)
static s32	ft_stroke_border_grow (FT_StrokeBorder border, u32 new_points)
static void	ft_stroke_border_close (FT_StrokeBorder border)
static s32	ft_stroke_border_lineto (FT_StrokeBorder border, GF_Point2D *to, Bool movable)
static s32	ft_stroke_border_conicto (FT_StrokeBorder border, GF_Point2D *control, GF_Point2D *to)
static s32	ft_stroke_border_cubicto (FT_StrokeBorder border, GF_Point2D *control1, GF_Point2D *control2, GF_Point2D *to)
static s32	ft_stroke_border_arcto (FT_StrokeBorder border, GF_Point2D *center, Fixed radius, Fixed angle_start, Fixed angle_diff)
static s32	ft_stroke_border_moveto (FT_StrokeBorder border, GF_Point2D *to)
static s32	ft_stroke_border_get_counts (FT_StrokeBorder border, u32 *anum_points, u32 *anum_contours)
static void	ft_stroke_border_export (FT_StrokeBorder border, GF_Path *outline)
static s32	ft_stroker_arcto (FT_Stroker *stroker, s32 side)
static s32	ft_stroker_cap (FT_Stroker *stroker, Fixed angle, s32 side)
static s32	ft_stroker_inside (FT_Stroker *stroker, s32 side)
static s32	ft_stroker_outside (FT_Stroker *stroker, s32 side)
static s32	ft_stroker_process_corner (FT_Stroker *stroker)
static s32	ft_stroker_subpath_start (FT_Stroker *stroker, Fixed start_angle)
static s32	FT_Stroker_LineTo (FT_Stroker *stroker, GF_Point2D *to, Bool is_last)
static s32	FT_Stroker_ConicTo (FT_Stroker *stroker, GF_Point2D *control, GF_Point2D *to)
static s32	FT_Stroker_CubicTo (FT_Stroker *stroker, GF_Point2D *control1, GF_Point2D *control2, GF_Point2D *to)
static s32	FT_Stroker_BeginSubPath (FT_Stroker *stroker, GF_Point2D *to)
static s32	ft_stroker_add_reverse_left (FT_Stroker *stroker, Bool open)
static s32	FT_Stroker_EndSubPath (FT_Stroker *stroker, Bool do_close)
static s32	FT_Stroker_GetCounts (FT_Stroker *stroker, u32 *anum_points, u32 *anum_contours)
static s32	FT_Stroker_ParseOutline (FT_Stroker *stroker, GF_Path *outline)
static Fixed	gf_path_get_dash (GF_PenSettings *pen, u32 dash_slot, u32 *next_slot)
static GF_Err	gf_path_mergedashes (GF_Path *gp, u32 start_contour_index)
static GF_Err	evg_dash_subpath (GF_Path *dashed, GF_Point2D *pts, u32 nb_pts, GF_PenSettings *pen, Fixed length_scale)
static GF_Path *	gf_path_dash (GF_Path *path, GF_PenSettings *pen)
GF_Path *	gf_path_get_outline (GF_Path *path, GF_PenSettings pen)

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Data Structure Documentation

struct FT_StrokeBorderRec

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Data Fields
u32	num_points
u32	max_points
GF_Point2D *	points
u8 *	tags
Bool	movable
s32	start
Bool	valid

struct FT_Stroker

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Data Fields
Fixed	angle_in
Fixed	angle_out
GF_Point2D	center
Bool	first_point
Fixed	subpath_angle
GF_Point2D	subpath_start
u32	line_cap
u32	line_join
Fixed	miter_limit
Fixed	radius
Bool	valid
Bool	closing
FT_StrokeBorderRec	borders[2]

Macro Definition Documentation

#define FT_SMALL_CONIC_THRESHOLD   ( GF_PI / 6 )

#define FT_SMALL_CUBIC_THRESHOLD   ( GF_PI / 6 )

#define FT_IS_SMALL

(

x

)

( (x) > -FIX_EPSILON && (x) < FIX_EPSILON )

#define FT_ARC_CUBIC_ANGLE   ( GF_PI / 2 )

#define FT_SIDE_TO_ROTATE

(

s

)

( GF_PI2 - (s) * GF_PI )

#define GF_PATH_DOT_LEN   1

#define GF_PATH_DOT_SPACE   2

#define GF_PATH_DASH_LEN   3

Enumeration Type Documentation

enum FT_StrokeTags

Enumerator
FT_STROKE_TAG_ON
FT_STROKE_TAG_CUBIC
FT_STROKE_TAG_BEGIN
FT_STROKE_TAG_END

Function Documentation

static void ft_conic_split ( GF_Point2D *  base )

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static Bool ft_conic_is_small_enough ( GF_Point2D *  base, Fixed *  angle_in, Fixed *  angle_out  )

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static void ft_cubic_split ( GF_Point2D *  base )

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static Bool ft_cubic_is_small_enough ( GF_Point2D *  base, Fixed *  angle_in, Fixed *  angle_mid, Fixed *  angle_out  )

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static s32 ft_stroke_border_grow ( FT_StrokeBorder  border, u32  new_points  )

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static void ft_stroke_border_close ( FT_StrokeBorder  border )

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static s32 ft_stroke_border_lineto ( FT_StrokeBorder  border, GF_Point2D *  to, Bool  movable  )

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static s32 ft_stroke_border_conicto ( FT_StrokeBorder  border, GF_Point2D *  control, GF_Point2D *  to  )

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static s32 ft_stroke_border_cubicto ( FT_StrokeBorder  border, GF_Point2D *  control1, GF_Point2D *  control2, GF_Point2D *  to  )

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static s32 ft_stroke_border_arcto ( FT_StrokeBorder  border, GF_Point2D *  center, Fixed  radius, Fixed  angle_start, Fixed  angle_diff  )

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static s32 ft_stroke_border_moveto ( FT_StrokeBorder  border, GF_Point2D *  to  )

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static s32 ft_stroke_border_get_counts ( FT_StrokeBorder  border, u32 *  anum_points, u32 *  anum_contours  )

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static void ft_stroke_border_export ( FT_StrokeBorder  border, GF_Path *  outline  )

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static s32 ft_stroker_arcto ( FT_Stroker *  stroker, s32  side  )

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static s32 ft_stroker_cap ( FT_Stroker *  stroker, Fixed  angle, s32  side  )

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static s32 ft_stroker_inside ( FT_Stroker *  stroker, s32  side  )

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static s32 ft_stroker_outside ( FT_Stroker *  stroker, s32  side  )

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static s32 ft_stroker_process_corner ( FT_Stroker *  stroker )

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static s32 ft_stroker_subpath_start ( FT_Stroker *  stroker, Fixed  start_angle  )

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static s32 FT_Stroker_LineTo ( FT_Stroker *  stroker, GF_Point2D *  to, Bool  is_last  )

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static s32 FT_Stroker_ConicTo ( FT_Stroker *  stroker, GF_Point2D *  control, GF_Point2D *  to  )

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static s32 FT_Stroker_CubicTo ( FT_Stroker *  stroker, GF_Point2D *  control1, GF_Point2D *  control2, GF_Point2D *  to  )

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static s32 FT_Stroker_BeginSubPath ( FT_Stroker *  stroker, GF_Point2D *  to  )

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static s32 ft_stroker_add_reverse_left ( FT_Stroker *  stroker, Bool  open  )

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static s32 FT_Stroker_EndSubPath ( FT_Stroker *  stroker, Bool  do_close  )

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static s32 FT_Stroker_GetCounts ( FT_Stroker *  stroker, u32 *  anum_points, u32 *  anum_contours  )

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static s32 FT_Stroker_ParseOutline ( FT_Stroker *  stroker, GF_Path *  outline  )

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static Fixed gf_path_get_dash ( GF_PenSettings *  pen, u32  dash_slot, u32 *  next_slot  )

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static GF_Err gf_path_mergedashes ( GF_Path *  gp, u32  start_contour_index  )

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static GF_Err evg_dash_subpath ( GF_Path *  dashed, GF_Point2D *  pts, u32  nb_pts, GF_PenSettings *  pen, Fixed  length_scale  )

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static GF_Path* gf_path_dash ( GF_Path *  path, GF_PenSettings *  pen  )

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