circle_and_rectangles.rb

#!/usr/bin/env jruby
require 'picrate'
# After a sketch by Marc Edwards at Bjango
# https:#github.com/bjango/Processing-SVG-experiments
class CircleRectangle < Processing::App
  load_library :svg

  def settings
    size(250, 250)                        # Set up a 250×250 canvas.
  end

  def setup
    sketch_title 'Simple Example'
    begin_record(SVG, data_path('simple.svg')) # Start recording drawing operations to this file.
    no_loop                                   # Only run draw once.
  end

  def draw
    no_stroke                      # Turn off the border on objects we’re about to draw.
    fill(color('#4bbcf6'))          # Set the fill colour to light blue.
    rect(50, 50, 100, 100)         # Draw a rectangle on the canvas and to the SVG file.
    fill(color('#5721a5'))         # Set the fill colour to purple.
    ellipse(150, 150, 100, 100)    # Draw a circle on the canvas and to the SVG file.
    end_record                     # Save and close the SVG file recording.
  end
end

CircleRectangle.new