path2d.h File Reference

2D Vectorial Path. More...

#include <gpac/maths.h>
#include <gpac/tools.h>

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Data Structures
struct	GF_Path
	2D Path Object More...
struct	GF_DashSettings
	Custom dash pattern The custom dash pattern object is used to specify custom dashes when outlining a path. More...
struct	GF_PenSettings
	Pen properties. More...

Enumerations
enum	GF_Path2DArcCloseType { GF_PATH2D_ARC_OPEN =0 , GF_PATH2D_ARC_CLOSE , GF_PATH2D_ARC_PIE }
enum	{ GF_PATH_CURVE_ON = 1 , GF_PATH_CLOSE = 5 , GF_PATH_CURVE_CONIC = 0 , GF_PATH_CURVE_CUBIC = 2 }
enum	{ GF_PATH_FILL_ZERO_NONZERO = 1 , GF_PATH_FILL_EVEN = 1<<1 , GF_PATH_BBOX_DIRTY = 1<<2 , GF_PATH_FLATTENED = 1<<3 }
enum	{   GF_POLYGON_COMPLEX , GF_POLYGON_COMPLEX_CCW , GF_POLYGON_COMPLEX_CW , GF_POLYGON_CONVEX_CCW ,   GF_POLYGON_CONVEX_CW , GF_POLYGON_CONVEX_LINE }
enum	{ GF_PATH_LINE_CENTER = 0 , GF_PATH_LINE_INSIDE , GF_PATH_LINE_OUTSIDE }
enum	{ GF_LINE_CAP_FLAT = 0 , GF_LINE_CAP_ROUND , GF_LINE_CAP_SQUARE , GF_LINE_CAP_TRIANGLE }
enum	{ GF_LINE_JOIN_MITER = 0 , GF_LINE_JOIN_ROUND , GF_LINE_JOIN_BEVEL , GF_LINE_JOIN_MITER_SVG }
enum	{   GF_DASH_STYLE_PLAIN = 0 , GF_DASH_STYLE_DASH , GF_DASH_STYLE_DOT , GF_DASH_STYLE_DASH_DOT ,   GF_DASH_STYLE_DASH_DASH_DOT , GF_DASH_STYLE_DASH_DOT_DOT , GF_DASH_STYLE_CUSTOM , GF_DASH_STYLE_SVG }

Functions
GF_Path *	gf_path_new ()
	path constructor
void	gf_path_del (GF_Path *gp)
	path destructor
void	gf_path_reset (GF_Path *gp)
	path reset
GF_Path *	gf_path_clone (GF_Path *gp)
	path copy constuctor
GF_Err	gf_path_close (GF_Path *gp)
	path close
GF_Err	gf_path_add_move_to (GF_Path *gp, Fixed x, Fixed y)
	path moveTo
GF_Err	gf_path_add_move_to_vec (GF_Path *gp, GF_Point2D *pt)
	starts new contour
GF_Err	gf_path_add_line_to (GF_Path *gp, Fixed x, Fixed y)
	adds line to path
GF_Err	gf_path_add_line_to_vec (GF_Path *gp, GF_Point2D *pt)
	adds line to path
GF_Err	gf_path_add_cubic_to (GF_Path *gp, Fixed c1_x, Fixed c1_y, Fixed c2_x, Fixed c2_y, Fixed x, Fixed y)
	adds cubic to path
GF_Err	gf_path_add_cubic_to_vec (GF_Path *gp, GF_Point2D *c1, GF_Point2D *c2, GF_Point2D *pt)
	adds cubic to path
GF_Err	gf_path_add_quadratic_to (GF_Path *gp, Fixed c_x, Fixed c_y, Fixed x, Fixed y)
	adds quadratic to path
GF_Err	gf_path_add_quadratic_to_vec (GF_Path *gp, GF_Point2D *c, GF_Point2D *pt)
	adds quadratic to path
GF_Err	gf_path_add_rect_center (GF_Path *gp, Fixed cx, Fixed cy, Fixed w, Fixed h)
	adds rectangle to path
GF_Err	gf_path_add_rect (GF_Path *gp, Fixed ox, Fixed oy, Fixed w, Fixed h)
	adds rectangle to path
GF_Err	gf_path_add_ellipse (GF_Path *gp, Fixed cx, Fixed cy, Fixed a_axis, Fixed b_axis)
	adds ellipse to path
GF_Err	gf_path_add_bezier (GF_Path *gp, GF_Point2D *pts, u32 nb_pts)
	adds N-1 bezier curve to path
GF_Err	gf_path_add_arc_to (GF_Path *gp, Fixed end_x, Fixed end_y, Fixed fa_x, Fixed fa_y, Fixed fb_x, Fixed fb_y, Bool cw)
	adds arc as described in MPEG-4 BIFS to path
GF_Err	gf_path_add_svg_arc_to (GF_Path *gp, Fixed end_x, Fixed end_y, Fixed r_x, Fixed r_y, Fixed x_axis_rotation, Bool large_arc_flag, Bool sweep_flag)
	adds arc as described in SVG to path
GF_Err	gf_path_add_arc (GF_Path *gp, Fixed radius, Fixed start_angle, Fixed end_angle, GF_Path2DArcCloseType close_type)
	adds arc to path
GF_Err	gf_path_add_subpath (GF_Path *gp, GF_Path *subpath, GF_Matrix2D *mx)
	concatenates path
GF_Err	gf_path_get_control_bounds (GF_Path *gp, GF_Rect *rc)
	gets path control bounds
GF_Err	gf_path_get_bounds (GF_Path *gp, GF_Rect *rc)
	gets path bounds
void	gf_path_flatten (GF_Path *gp)
	flattens path
GF_Path *	gf_path_get_flatten (GF_Path *gp)
	gets flatten copy of path
Bool	gf_path_point_over (GF_Path *gp, Fixed x, Fixed y)
	point over path testing
Bool	gf_path_is_empty (GF_Path *gp)
	path init testing
GF_PathIterator *	gf_path_iterator_new (GF_Path *gp)
	path iterator constructor
void	gf_path_iterator_del (GF_PathIterator *it)
	path iterator destructor
Fixed	gf_path_iterator_get_length (GF_PathIterator *it)
	get path length
Bool	gf_path_iterator_get_transform (GF_PathIterator *it, Fixed offset, Bool follow_tangent, GF_Matrix2D *mat, Bool smooth_edges, Fixed length_after_point)
	gets transformation matrix at given point on path
u32	gf_polygone2d_get_convexity (GF_Point2D *pts, u32 nb_pts)
GF_Path *	gf_path_get_outline (GF_Path *path, GF_PenSettings pen)

Detailed Description

2D Vectorial Path.

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