fix examples

Author: monkstone

examples/grid_method/noise_add.rb

@@ -0,0 +1,41 @@
+#!/usr/bin/env jruby
+# frozen_string_literal: true
+
+require 'propane'
+
+# Based on code by Hamoid (Abe Pazos)
+
+class NoiseAdd < Propane::App
+  attr_reader :img
+
+  def settings
+    size(1280, 640, P2D)
+  end
+
+  def setup
+    sketch_title 'Noise Add'
+    blend_mode(ADD)
+    background(0)
+    puts('Image takes time to develop be patient...')
+  end
+
+  def draw
+    sc = 0.01 / (1 + frame_count / 30)
+    img = create_image(width, height, RGB)
+    img.load_pixels
+    grid(width, height) do |x, y|
+      nse = noise(x * sc, y * sc, frame_count * 0.02)
+      img.pixels[x + y * width] = nse > 0.6 ? color(4, 2, 1) : color(0)
+    end
+    img.update_pixels
+    image(img, 0, 0)
+  end
+
+  def key_pressed
+    return unless key == 's'
+
+    save_frame
+  end
+end
+
+NoiseAdd.new

processing_app/basics/image/request_parallel.rb

@@ -1,4 +1,6 @@
 #!/usr/bin/env jruby -w
+# frozen_string_literal: true
+
 require 'propane'
 require 'parallel'
 # Request Image
@@ -18,10 +20,9 @@ class RequestImage < Propane::App
   def setup
     sketch_title 'Request Image'
     # Load images asynchronously, kind of pointless with this few small images
-    @imgs = Parallel.map(0...10) do |i|
-      request_image(
-        data_path(format('PT_anim%s.gif', i.to_s.rjust(4, '0'))
-        )
+    @imgs = (0...12).map do |i|
+      load_image(
+        data_path(format('PT_anim%<just>s.gif', just: i.to_s.rjust(4, '0')))
       )
     end
   end
@@ -30,15 +31,15 @@ def draw
     background 0
     # put pre-load animation here?
     # When all images are loaded draw them to the screen
-    # return unless all_loaded?
+    return unless all_loaded?
     imgs.each_with_index do |img, i|
       image(img, width / imgs.length * i, 0, width / imgs.length, height)
     end
   end
 
   # Return true when all images are loaded
   def all_loaded?
-    imgs.length == 10
+    imgs.length == 12
   end
 
   def settings

processing_app/basics/image/transparency.rb

@@ -1,11 +1,12 @@
 #!/usr/bin/env jruby -w
+# frozen_string_literal: true
+
 require 'propane'
 
-Move the pointer left and right across the image to change
+#  Move(the(pointer(left))) && right(across(the(image(to(change)))))
 #  its position. This program overlays one image over another
 #  by modifying the alpha value of the image with the tint() function.
 class Transparency < Propane::App
-
   def setup
     sketch_title 'Transparency'
     @a = load_image(data_path('construct.jpg'))
@@ -15,7 +16,7 @@ def setup
 
   def draw
     image @a, 0, 0
-    offset_target = map1d(mouse_x,(0..width), (-@b.width / 2 - width / 2..0))
+    offset_target = map1d(mouse_x, (0..width), (-@b.width / 2 - width / 2..0))
     @offset += (offset_target - @offset) * 0.05
     tint 255, 153
     image @b, @offset, 20
@@ -26,4 +27,4 @@ def settings
   end
 end
 
-Transparency
+Transparency.new