var scalar = 1;  // set the radius of circle

var startX = 200;   // set the x-coordinate for the circle center

var startY = 200;   // set the y-coordinate for the circle center

​

function setup() {

  createCanvas(400, 400);

    background(255);

  angleMode(DEGREES);   // change the angle mode from radians to degrees

}

​

function draw() {

  x = startX + scalar * cos(angle);

  y = startY + scalar * sin(angle);

  ellipse(x, y, 4);

  angle++;  // increment angle for the next frame

  scalar += 0.05

}