The LED screen is a solid square of LEDs with five LEDs on each side.
To learn more about how you number the LEDs with x
and y
coordinates, see LED screen.
Find whether the LED you say on the LED screen is on or off.
led.point(0,0);
x
is a number that means the
horizontal spot on the LED screen (from left to right: 0, 1, 2, 3,
or 4)y
is a number that means the vertical
spot on the LED screen (from top to bottom: 0, 1, 2, 3, or 4)If a parameter is out of bounds (a value
other than 0 to 4), this function will return false
.
true
, that means the LED is on. If it is false
, that means the LED is off.This program turns the center LED (2, 2) off if it is already on. (If it is already off, this program leaves it off.)
if (led.point(2, 2)) {
led.unplot(2, 2)
}