Draw a circle (pixel algorithm)

circle.js

//First attempt: O(r^2)
function drawCircle(cx, cy, r) {
    var dim = 100

    for (let i = -r; i<=r; i+=1) {
        for (let j = -r; j<=r; j+=1) {
            if (
                Math.round(Math.sqrt(i*i + j*j)) === r
            ) drawPixel(i + cx, j + cy)
        }
    }
}

function drawPixel(x, y) {
    console.log(x, y)
}








//Second attempt: O(r)
function drawCircle(cx, cy, r) {
    let x = 0 + r
    let y = 0

    let eighth = 1

    drawPixel(x, y, r, cx, cy)

    while (x > y) {
        y++

        if (!possiblyDrawPixel(x, y, r, cx, cy)) {
            x--
            drawPixel(x, y, r, cx, cy)
        }
    }

}

function possiblyDrawPixel(i, j, r, cx, cy) {
    if ( Math.round(Math.sqrt(i*i + j*j)) === r) {
        drawPixel(i + cx, j + cy)
        return true
    }
    else return false
}

function drawPixel(x, y) {
    console.log(x, y)
}

interface RowCol {
     row: number,
     col: number,
}
const drawCircle = (cx: number, cy: number, r: number) => {
    const positions: RowCol[] = [];
    for (let i = -r; i <= r; i += 1) {
        for (let j = -r; j <= r; j += 1) {
            if (
                Math.round(Math.sqrt(i * i + j * j)) === r
            ) {
                positions.push({
                    row: i + cx,
                    col: j + cy,
                })
            }
        }
    }
    return positions;
}

drawCircle(5,5, 4);

works perfect to me!!!!
thanks!!!!