moar data_path fixes

Author: monkstone

processing_app/topics/file_io/load_file.rb

@@ -6,7 +6,6 @@
 # pair of numbers is loaded each frame and used to draw a point on the screen.
 class LoadFile < Propane::App
   attr_reader :points, :count
-  X, Y = 0, 1
 
   def setup
     sketch_title 'Load File1'
@@ -18,14 +17,14 @@ def setup
     @points = []
     # The use of vanilla processing load_strings convenience method is
     # of dubious value in ruby processing when you can do this
-    File.open('data/positions.txt').each_line do |line|
-      points << line.split(/\t/).map! { |i| i.to_i * 2 }
+    File.open(data_path('positions.txt')).each_line do |line|
+      points << line.split.map! { |i| i.to_i * 2 }
     end
   end
 
   def draw
     return unless count < points.size
-    point(points[count][X], points[count][Y])
+    point(*points[count])
     @count += 1
   end
 

processing_app/topics/file_io/save_frames.rb

@@ -14,8 +14,6 @@ class SaveFrames < Propane::App
   def setup
     sketch_title 'Save Frames'
     @recording = false
-    directory = 'output'
-    Dir.mkdir(directory) unless File.exist?(directory)
   end
 
   def draw
@@ -30,14 +28,10 @@ def draw
       line(-100, 0, 100, 0)
       pop_matrix
     end
-
-    # If we are recording call saveFrame!
-    # The number signs (#) indicate to Processing to
-    # number the files automatically
-    save_frame(data_path('frames####.png')) if recording
+    # The '#' symbols makes Processing number the files automatically
+    save_frame(data_path('output/frames####.png')) if recording
     # Let's draw some stuff to tell us what is happening
-    # It's important to note that none of this will show up in the
-    # rendered files b/c it is drawn *after* saveFrame
+    # NB: Content created after this line does not show up rendered files
     text_align(CENTER)
     fill(255)
     if !recording