More OO bubble yaml sketch

Author: monkstone

processing_app/topics/advanced_data/data/data.yml

@@ -1,22 +1,22 @@
 ---
-bubbles:
+emotions:
 - position:
-    x: 160
-    y: 103
+  - 160
+  - 103
   diameter: 43.19838
   label: Happy
 - position:
-    x: 372
-    y: 137
+  - 372
+  - 137
   diameter: 52.42526
   label: Sad
 - position:
-    x: 273
-    y: 235
+  - 273
+  - 235
   diameter: 61.14072
   label: Joyous
 - position:
-    x: 121
-    y: 179
+  - 121
+  - 179
   diameter: 44.758068
   label: Melancholy

processing_app/topics/advanced_data/library/bubble/bubble.rb

@@ -1,7 +1,6 @@
 # encoding: utf-8
 # frozen_string_literal: true
-
-# The bubble library, include BubbleStruct
+# The bubble library
 class Bubble
   include Processing::Proxy
 
@@ -38,15 +37,7 @@ def to_a
     [x, y, diameter, label]
   end
 
-  def to_hash
-    keys = %i[position diameter label]
-    values = [[['x', x], ['y', y]].to_h, diameter, label]
-    keys.zip(values).to_h
-  end
-
   def to_struct
     BubbleStruct.new(x, y, diameter, label)
   end
 end
-
-BubbleStruct = Struct.new(:x, :y, :diameter, :label)

processing_app/topics/advanced_data/library/bubble_yaml/bubble_yaml.rb

@@ -0,0 +1,4 @@
+require_relative 'lib/bubble_reader.rb'
+require_relative 'lib/bubble_writer.rb'
+require_relative 'lib/bubble.rb'
+require_relative 'lib/bubble_data.rb'

processing_app/topics/advanced_data/library/bubble_yaml/lib/bubble.rb

@@ -0,0 +1,44 @@
+# The Bubble class
+class Bubble
+  include Processing::Proxy
+  attr_reader :pos, :diameter, :name, :over
+
+  def initialize(pos, diameter, name)
+    @pos, @diameter, @name = pos, diameter, name
+    @over = false
+  end
+
+  def rollover(px, py)
+    distance = dist px, py, pos[X], pos[Y]
+    @over = (distance < diameter / 2.0)
+  end
+
+  def display
+    xpos = pos[X]
+    ypos = pos[Y]
+    display_bubble(xpos, ypos)
+    return unless over
+    display_label(xpos, ypos)
+  end
+
+  def display_bubble(xpos, ypos)
+    stroke 0
+    stroke_weight 2
+    no_fill
+    ellipse xpos, ypos, diameter, diameter
+  end
+
+  def display_label(xpos, ypos)
+    fill 0
+    text_align CENTER
+    text(name, xpos, ypos + diameter / 2.0 + 20)
+  end
+
+  def to_h
+    {
+      'position' => pos,
+      'diameter' => diameter,
+      'label' => name
+    }
+  end
+end

processing_app/topics/advanced_data/library/bubble_yaml/lib/bubble_data.rb

@@ -0,0 +1,18 @@
+MAX_BUBBLE = 10
+
+# Bubble data holder
+class BubbleData
+  attr_reader :bubbles
+  def initialize(bubbles)
+    @bubbles = bubbles
+  end
+
+  def add_bubble(bubble)
+    bubbles << bubble
+    bubbles.shift if bubbles.size > MAX_BUBBLE
+  end
+
+  def to_h
+    bubbles.map(&:to_h)
+  end
+end

processing_app/topics/advanced_data/library/bubble_yaml/lib/bubble_reader.rb

@@ -0,0 +1,10 @@
+require 'yaml'
+
+# yaml bubble reader
+class BubbleReader
+  attr_reader :hash
+
+  def read(path)
+    @hash = YAML.load_file(path)
+  end
+end

processing_app/topics/advanced_data/library/bubble_yaml/lib/bubble_writer.rb

@@ -0,0 +1,14 @@
+require 'yaml'
+
+# yaml bubble writer
+class BubbleWriter
+  attr_reader :hash
+
+  def initialize(type:, data:)
+    @hash = { type => data }
+  end
+
+  def write(path)
+    File.write(path, hash.to_yaml)
+  end
+end

processing_app/topics/advanced_data/load_save_yaml.rb

@@ -1,9 +1,7 @@
-require 'yaml'
+load_library :bubble_yaml
 
 attr_reader :bubbles, :bubble_data
 
- MAX_BUBBLE = 10
-
 def settings
   size(640, 360)
 end
@@ -23,87 +21,27 @@ def draw
 end
 
 def load_data
-  yaml = YAML.load_file(data_path('data.yml'))
-  # parse the source string
-  @bubble_data = BubbleData.new 'bubbles'
-  # get the bubble_data from the top level hash
-  data = bubble_data.extract_data yaml
-  # map the bubble_data array to an array of bubbles
+  data = BubbleReader.new.read(data_path('data.yml')).fetch('emotions')
   @bubbles = data.map do |point|
-    pos = point['position']
-    Bubble.new(pos['x'], pos['y'], point['diameter'], point['label'])
+    Bubble.new(point['position'], point['diameter'], point['label'])
   end
+  @bubble_data = BubbleData.new(bubbles)
 end
 
 def save_data
-  # demonstrate how easy it is to create json object from a hash in ruby
-  hash = bubble_data.to_hash
+  # demonstrate how easy it is to create yaml object from a hash in ruby
+  # you could easily store 'colors as well as 'emotions' bubbles
+  writer = BubbleWriter.new(type: 'emotions', data: bubble_data.to_h)
   # overwite existing 'data.yml'
-  open(data_path('data.yml'), 'w') { |file| file.write(hash.to_yaml) }
+  writer.write(data_path('data.yml'))
 end
 
 def mouse_pressed
   # create a new bubble instance, where mouse was clicked
   @bubble_data.add_bubble(
-    Bubble.new(mouse_x, mouse_y, rand(40..80), 'new label')
+    Bubble.new([mouse_x, mouse_y], rand(40..80), 'new label')
   )
   save_data
   # reload the yaml data from the freshly created file
   load_data
 end
-
-# Bubble data holder
-class BubbleData
-  attr_reader :name, :data
-  def initialize(name = 'bubbles')
-    @name = name
-    @bubbles = []
-  end
-
-  def add_bubble(bubble)
-    bubbles << bubble
-    bubbles.shift if bubbles.size > MAX_BUBBLE
-  end
-
-  def extract_data(yaml)
-    @bubbles = yaml[name]
-  end
-
-  def to_hash
-    { name => bubbles.map(&:to_hash) }
-  end
-end
-
-# The Bubble class
-class Bubble
-  attr_reader :x, :y, :diameter, :name, :over
-
-  def initialize(x, y, diameter, name)
-    @x, @y, @diameter, @name = x, y, diameter, name
-    @over = false
-  end
-
-  def rollover(px, py)
-    distance = dist px, py, x, y
-    @over = (distance < diameter / 2.0)
-  end
-
-  def display
-    stroke 0
-    stroke_weight 2
-    no_fill
-    ellipse x, y, diameter, diameter
-    return unless over
-    fill 0
-    text_align CENTER
-    text(name, x, y + diameter / 2.0 + 20)
-  end
-
-  def to_hash
-    {
-      'position' => { 'x' => x, 'y' => y },
-      'diameter' => diameter,
-      'label' => name
-    }
-  end
-end