lv_draw_arc.h

Functions

void lv_draw_arc_dsc_init(lv_draw_arc_dsc_t *dsc)

void lv_draw_arc(struct _lv_layer_t *layer, const lv_draw_arc_dsc_t *dsc)

void lv_draw_arc_get_area(lv_coord_t x, lv_coord_t y, uint16_t radius, lv_value_precise_t start_angle, lv_value_precise_t end_angle, lv_coord_t w, bool rounded, lv_area_t *area)

Get an area the should be invalidated when the arcs angle changed between start_angle and end_ange

Parameters:

• x -- the x coordinate of the center of the arc

• y -- the y coordinate of the center of the arc

• radius -- the radius of the arc

• start_angle -- the start angle of the arc (0 deg on the bottom, 90 deg on the right)

• end_angle -- the end angle of the arc

• w -- width of the arc

• rounded -- true: the arc is rounded

• area -- store the area to invalidate here

struct lv_draw_arc_dsc_t

Public Members

lv_draw_dsc_base_t base

lv_color_t color

lv_coord_t width

lv_value_precise_t start_angle

lv_value_precise_t end_angle

lv_point_t center

uint16_t radius

const void *img_src

lv_opa_t opa

uint8_t rounded