createCanvas(windowWidth, windowWidth);

  angleMode(DEGREES);

  theta = 3800;

  rotSpeed = 1;

  numPoints = 32;

  colorMode(HSB, 100);

  strokeWeight(2);

  frameRate(2);

}

​

function draw() {

  //noLoop();

  background(0);

  scale(0.25);

  x = y = dx = dy = lastX = lastY = angle = high = 0;

  for (let i = 0; i < numPoints-20; i++) {

    r = angle;

    x = width<<1;

    y = height<<1;

    dx = r * cos(angle);

    dy = r * sin(angle);

    //z = r * tan(angle);

    if (r > high) {

      high = r;

    }

    stroke(map(r, 0, high, 0, 100), 100, 100);

    line(x + lastX, y + lastY, x + dx, y + dy);

    lastX = dx;

    lastY = dy;

    angle += theta / numPoints;

    // if(angle>=9000){noLoop();}

    //angle++;

  }

  print(angle);

  theta += rotSpeed;

}

​

function keyPressed() {

  if (keyCode === 32) {

  print(angle);

  } 

}

​