Here is an example sketch by Joshua Davis, that has been refactored for JRubyArt. Download the hype library from github. Unzip the library in the processing libraries folder, rename the folder hype, rename distribution folder to library, rename the HYPE.jar to hype.jar. Check that you can see the library from the processing-3.2.1 ide. Note that we can use snake case in place of camel case, for constants use :: and not . to call.

bar_chart.rb

# encoding: utf-8
load_library :hype
include_package 'hype'

def settings
  size(640, 640)
end

def setup
  sketch_title('Method Chaining')
  H.init(self)
  # background is a static java method and should be called this way
  H.background(color('#242424')) # we need quotes for web color string
  rect1 = HRect.new(100)
  rect1.rounding(10) # set corner rounding
  rect1.stroke_weight(6) # set stroke weight
  rect1.stroke(color('#000000'), 150) # set stroke color and alpha
  rect1.fill(color('#FF6600')) # set fill color
  rect1.anchor_at(H::CENTER) # set where anchor point is / key point for rotation and positioning
  rect1.rotation(45) # set rotation of the rect
  rect1.loc(100, height / 2) # set x and y location
  H.add(rect1)

  # here's the same code / with method chaining

  rect2 = HRect.new(100)
  rect2.rounding(10)
       .stroke_weight(6)
       .stroke(color('#000000'), 150)
       .fill(color('#FF9900'))
       .anchor_at(H::CENTER)
       .rotation(45)
       .loc(247, height / 2)
  H.add(rect2)

  # here's the same code / minus the hard returns and indentation (tabs are bad)

  rect3 = HRect.new(100)
  rect3.rounding(10).stroke_weight(6).stroke(color('#000000'), 150).fill(color('#FFCC00')).anchor_at(H::CENTER).rotation(45).loc(394, height / 2)
  H.add(rect3)

  H.draw_stage # paint the stage

  # here is the non HYPE version / basic processing syntax

  push_matrix
  stroke_weight(6)
  stroke(color('#000000'), 150)
  fill(color('#FF3300'))
  translate(width - 100, (height / 2))
  rotate(45.radians)
  rect(0, 0, 100, 100, 10, 10, 10, 10)
  pop_matrix
  stroke_weight(1)
  stroke(color('#0095a8'))
  line(0, height / 2, width, height / 2)
end