createCanvas(400, 400);

}

​

function draw() {

  background(220);

  // ellipse(200,200, 20,20);

  drawSquare(200,200, 100);

}

​

function drawSquare(x, y, size) {

  drawLine(x,y, x,y+size);

  drawLine(x,y+size, x+size,y+size);

  drawLine(x+size,y+size, x+size,y);

  drawLine(x+size,y,y, x,y);

}

​

function drawLine(x1,y1, x2,y2) {

  drawLineStraight(x1,y1, x2,y2)

}

​

function drawLineStraight(x1,y1, x2,y2) {

  let xStep = (x2-x1)/100;

  let yStep = (y2-y1)/100;

  for (let i = 0; i < 100; i++) {

    ellipse( x1+i*xStep,y1+i*yStep, 2,2 );

  }

}

function drawLineDots(x1,y1, x2,y2) {

  let xStep = (x2-x1)/10;

  let yStep = (y2-y1)/10;

  for (let i = 0; i < 10; i++) {

    ellipse( x1+i*xStep,y1+i*yStep, 6,6 );

  }

}

​