createCanvas(400, 400);

}

​

function draw() {

  background(20);

  center = createVector(width / 2, height / 2);

  mouse = createVector(mouseX, mouseY);

  strokeWeight(4)

  stroke(200)

  // line(0, 0, mouse.x, mouse.y)

  // line(0, 0, center.x, center.y)

  stroke(220);

  mouse.sub(center);

  mouse.normalize()

  mouse.mult(80);

  let m = mouse.mag();

  rect(0, 0, m, 20)

  translate(width / 2, height / 2);

  line(0, 0, mouse.x, mouse.y);

  stroke(150,0,0)

  line(0, 0, 0, height);

  line(0, 0, width, 0);

}