Stroke structures

This section gives details on stroke structures.

vg_lite_path_t structure

Defined under Vector Path Structures - vg_lite_path_t structure.

(additional members added for stroke from March 2022)

Parent topic:Stroke structures

vg_lite_path_list_t structure

The structure vg_lite_path_list_ptr points to the vg_lite_path_list structure that provides divided path data according to MOVE/MOVE_REL. (from Aug 2023)

Used (vg_lite_path_list_ptr) in structures: vg_lite_stroke_t.

vg_lite_path_list_t members	Type	Description
path_points	vg_lite_path_point_ptr
path_end	vg_lite_path_point_ptr
point_count	vg_lite_uint32_t
next	vg_lite_path_list_ptr
closed	vg_lite_uint8_t

Parent topic:Stroke structures

vg_lite_path_point_t structure

The structure vg_lite_path_point_ptr points to the vg_lite_path_point structure which provides path detail (from March 2022)

Used (vg_lite_path_point_ptr) in structures: vg_lite_path_point_t, vg_lite_stroke_conversion. vg_lite_sub_path_t.

vg_lite_path_point_t members	Type	Description
x	vg_lite_float_t	X coordinate
y	vg_lite_float_t	Y coordinate
flatten_flag	vg_lite_uint8_t	Flatten flag for flattened path
curve_type	vg_lite_uint8_t	Curve type for the stroke path
tangentX	vg_lite_float_t	X tangent (Note: #define centerX tangent)
tangentY	vg_lite_float_t	Y tangent (Note: #define centerX tangent)
length	vg_lite_float_t	Line length
prev	vg_lite_path_point_ptr	Pointer to the previous point node

Parent topic:Stroke structures

vg_lite_stroke_t structure

The structure provides stroke parameters and pointers to temp storage for a stroke sub path. Refer to the function vg_lite_set_stroke parameter descriptions for additional description for some members. (from March 2022)

Used in structure: vg_lite_path_t.

vg_lite_stroke_t members	Type	Description
cap_style	vg_lite_cap_style_t	Stroke cap style
join_style	vg_lite_join_style_t	Stroke joint style
line_width	vg_lite_float_t	Stroke line width
miter_limit	vg_lite_float_t	Stroke miter limit
*dash_pattern	vg_lite_float_t	Pointer to stroke dash pattern
pattern_count	vg_lite_uint32_t	Number of dash pattern repetitions
dash_phase	vg_lite_float_t	Stroke dash phrase
dash_length	vg_lite_float_t	Stroke dash initial length
dash_index	vg_lite_uint32_t	Stroke dash initial index
half_width	vg_lite_float_t	Half line width
pattern_length	vg_lite_float_t	Total length of stroke dash patterns.
miter_square	vg_lite_float_t	For fast checking
path_points	vg_lite_path_point_ptr	Temp storage for stroke sub path
path_end	vg_lite_path_point_ptr	Temp storage for stroke sub path
point_count	unint32_t	Temp storage for stroke sub path
left_point	vg_lite_path_point_ptr	Temp storage for stroke sub path
right_pont	vg_lite_path_point_ptr	Temp storage for stroke sub path
stroke_points	vg_lite_path_point_ptr	Temp storage for stroke sub path
stroke_end	vg_lite_path_point_ptr	Temp storage for stroke sub path
stroke_count	vg_lite_uint32_t	Temp storage for stroke sub path
path_list_divide	vg_lite_path_list_ptr	Divide stroke path according to move or move_rel for avoiding implicit closure. (from Aug 2023)
cur_list	vg_lite_path_list_ptr	Pointer to current divided path data. (from Aug 2023)
add_end	vg_lite_uint8_t	Flag that adds end_path in driver (from Aug 2023)
dash_reset	vg_lite_uint8_t	(from Aug 2023)
stroke_paths	vg_lite_sub_path_ptr
last_stroke	vg_lite_sub_path_ptr
swing_handling	vg_lite_uint32_t
swing_deltax	vg_lite_float_t
swing_deltay	vg_lite_float_t
swing_start	vg_lite_path_point_ptr
swing_stroke	vg_lite_path_point_ptr
swing_length	vg_lite_float_t
swing_centlen	vg_lite_float_t
swing_count	vg_lite_uint32_t
need_swing	vg_lite_uint8_t
swing_ccw	vg_lite_uint8_t
stroke_length	vg_lite_float_t
stroke_size	vg_lite_uint32_t
fattened	vg_lite_uint8_t	The stroke line is a fat line.
closed	vg_lite_uint8_t

Parent topic:Stroke structures

vg_lite_sub_path_t structure

The structure vg_lite_sub_path_ptr points to the vg_lite_sub_path structure that provides sub path detail and a pointer to the next sub path. (from March 2022)

Used in structure: vg_lite_stroke_conversion.

vg_lite_path_point_t members	Type	Description
next	vg_lite_sub_path_ptr	Pointer to the next sub path
point_count	vg_lite_uint32_t	Number of points in the sub path
point_list	vg_lite_path_point_ptr	Pointer to the point list.
end_point	vg_lite_path_point_ptr	Pointer to the last point.
closed	vg_lite_uint8_t	Indicates whether or not the path is closed.
length	vg_lite_float_t	Length of the sub path.

Parent topic:Stroke structures

Parent topic:Stroke operations