processing + propane sketch

0413_halftone_dots.rb

#!/usr/bin/env jruby
# frozen_string_literal: false
require 'propane'

# halftone dots 
# propane graffiti by 8mana
# based on code by Casey Reas and Ben Fry

class HalftoneDots < Propane::App
  def settings
    size 480, 120
  end

  def setup
    sketch_title 'halftone dots'
  end

  def draw
    background 0
    $y = 32
    while $y <= height do
      $x = 12
      while $x <= width do
        ellipse $x + $y, $y, 16 - $y/10.0, 16 - $y/10.0
        $x += 15
      end
      $y += 8
    end
  end
end

HalftoneDots.new