Arc

obj:arc

Property	Value	Default	Description
min	int16	0	minimum value of the indicator
max	int16	100	maximum value of the indicator
val	int16	0	current value of the indicator
rotation	int16	0	offset to the 0 degree position
type	0-2	0	0 = normal, 1 = symmetrical, 2 = reverse
adjustable	bool	false	Add knob that the user can operate to change the value
start_angle	0-360		start angle of the arc background (see note)
end_angle	0-360		end angle of the arc background (see note)
start_angle10	0-360		start angle of the arc indicator (see note)
end_angle10	0-360		end angle of the arc indicator (see note)

Note

Zero degree is at the middle right (3 o'clock) of the object and the degrees are increasing in a clockwise direction. The angles should be in the [0-360] range.
min, max and val also support negative values.

Tip

To adjust the size of the knob, use pad_top20, pad_bottom20, pad_left20, pad_right20 styling properties. If you increase the knob beyond the margins of the object, you also need to increase pad_top, pad_bottom, pad_left, pad_right for the arc itself.
Check out value styling to display a textual value in the middle of the arc.

Example jsonl

{"page":1,"id":9,"obj":"arc","x":20,"y":75,"w":200,"h":200,"min":15,"max":35,"border_side":0,"type":0,"rotation":0,"start_angle":135,"end_angle":45,"start_angle10":135,"end_angle10":45,"adjustable":true}

While pressing and dragging the arc object the following events are sent: down (old value), changed (repeatedly until released) and up (value at the moment of releasing it):

{"event":"down","val":21}
{"event":"changed","val":22}
{"event":"changed","val":23}
{"event":"changed","val":25}
{"event":"changed","val":27}
{"event":"changed","val":29}
{"event":"up","val":31}