Draw Circle with makecode and OLED

function circleBres (xc: number, yc: number, r: number) {
    y = r
    d = 3 - 2 * r
    drawCircle(xc, yc, x, y)
    while (y >= x) {
        x += 1
        if (d > 0) {
            y += -1
            d = d + 4 * (x - y) + 10
        } else {
            d = d + 4 * x + 6
        }
        drawCircle(xc, yc, x, y)
        basic.pause(100)
    }
}
input.onButtonPressed(Button.B, function () {
    circleBres(64, 32, 16)
})
function drawCircle (xc: number, yc: number, x: number, y: number) {
    OLED12864_I2C.pixel(xc + x, yc + y, 1)
    OLED12864_I2C.pixel(xc - x, yc + y, 1)
    OLED12864_I2C.pixel(xc + x, yc - y, 1)
    OLED12864_I2C.pixel(xc - x, yc - y, 1)
    OLED12864_I2C.pixel(xc + y, yc + x, 1)
    OLED12864_I2C.pixel(xc - y, yc + x, 1)
    OLED12864_I2C.pixel(xc + y, yc - x, 1)
    OLED12864_I2C.pixel(xc - y, yc - x, 1)
}
let x = 0
let d = 0
let y = 0
OLED12864_I2C.init(60)
OLED12864_I2C.zoom(false)