lvgl.arc

Display an arc.

Syntax

lvgl.arc([parent], {settings})

parent:arc({settings})

Parameters

See the API page for parameter description and common settings.

Note: 'w', 'h' and 'size' should not be used with lvgl.arc. Use 'radius' instead.

Arc specific settings:

Name	Type	Description	Default if not set
thickness	Number	Sets the width of the line used to draw the arc.	1
radius	Number or Function	Sets the radius of the arc	0
startAngle	Number or Function	Sets the starting angle or the arc. Measured in degrees - 0 - 360. 0 is to the right (3 o'clock).	0
endAngle	Number or Function	Sets the ending angle for the arc.	360
opacity	Number or Function	Sets the opacity. Note: range is 0 (transparent) to 255 (opaque).	255 (opaque)
rounded	Boolean	If true makes the ends of the arc round.	false
bgColor	Color or Function	Sets the color of the background arc.	not used
bgOpacity	Number or Function	Sets the opacity of the background arc.	0 (not visible)
bgStartAngle	Number or Function	Sets the starting angle or the background arc. Measured in degrees - 0 - 360. 0 is to the right (3 o'clock).	0
bgEndAngle	Number or Function	Sets the ending angle for the arc.	360

Notes:

Arcs object have two elements a foreground arc and a background arc. By default the background arc is not shown. To show the background arc set both the bgColor and bgOpacity properties.

If opacity or bgOpacity is less than 255 (fully opaque) and rounded is set to true, the ends of the arc will not draw correctly. This is an Lvgl limitation.

Example:

lvgl.arc({radius=30, thickness=8, startAngle=155, endAngle=25,
          bgStartAngle=120, bgEndAngle=60, bgColor=GREY, bgOpacity=255,
          color=RED, rounded=true})

Return values

LVGL object

API Status

	Avail	Status	Comment
BW radios
Color radios		active

Change log

EdgeTX version	Change
2.11.0	Introduced