Sam El-Husseini e3975e65e5 pxt-microbit Accessibility PR (#529 )

* Accessibility changes

2017-09-07 13:42:08 -07:00

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Point

Find whether the LED you say on the LED screen is on or off.

led.point(0,0);

Parameters

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.

Returns

a boolean. If it is true, that means the LED is on. If it is false, that means the LED is off.

~hint

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.

~

Example: Toggle 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)
}

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