// All our dimensions and rendering units will use inches

  let units = 'in';

  // Set canvas dimensions to 3000 units

  let dimensions = [3000, 3000];

​

  // Create a canvas with dimensions in pixels

  createCanvas(dimensions[0], dimensions[1]);

​

  // Set background to black

  background(0);

​

  // Use a white stroke for the points

  stroke(255);

​

​

  // Make circles expand to edge of the canvas

  let maxRadius = min(width, height) / 2;

​

  // Draw points

  let points = 900;

  for (let i = 1; i <= points; i++) {

    let t = i / points;

    // Here phi is the golden ratio

    let phi = (sqrt(5) + 1) / 2;

    // Pick our angle based on the golden ratio

    let theta = 2 * PI * i * phi;

    // Get back a distance 0..1 based on the current step

    let distance = sqrt(t);

    // Find the cartesian point on a unit circle

    let x = cos(theta);

    let y = sin(theta);

    // Scale this point to our max dimensions

    let r = distance * maxRadius;

    // Find the point on the canvas

    let cx = width / 2 + x * r;

    let cy = height / 2 + y * r;

    // Now draw a circle at each point

    // Make them smaller when closer to centre

    let radius = 0.02 * pow(t, 0.5) * maxRadius;

    ellipse(cx, cy, radius * 2);

  }

}

​