get_pixels.rb in rmagick-3.0.0

- old
+ new

@@ -6,11 +6,11 @@
 # full-color on the left to monochrome on the right.
 
 # Read the colorful picture of a rock formation. Scale
 # it to 300 pixels high because we don't want a big picture.
 rocks = Magick::Image.read('images/Red_Rocks.jpg').first
-rocks.scale!(250.0/rocks.rows)
+rocks.scale!(250.0 / rocks.rows)
 
 # Make a monochrome copy. See Image#quantize for details
 grayrocks = rocks.quantize(256, Magick::GRAYColorspace)
 
 rows = grayrocks.rows
@@ -23,25 +23,23 @@
 # element slightly more opaque than its predecessor.
 step = Magick::TransparentOpacity / cols.to_f
 opacity_steps = Array.new(cols)
 cols.times do |x|
   opacity_steps[x] = Magick::TransparentOpacity - Integer(x * step)
-  if opacity_steps[x] < Magick::OpaqueOpacity
-    opacity_steps[x] = Magick::OpaqueOpacity
-  end
+  opacity_steps[x] = Magick::OpaqueOpacity if opacity_steps[x] < Magick::OpaqueOpacity
 end
 
 # Get each row of pixels from the mono image.
 # Copy the pre-computed opacity values to the pixels.
 # Store the pixels back.
 rows.times do |y|
   pixels = grayrocks.get_pixels(0, y, cols, 1)
-  pixels.each_with_index { |p,x| p.opacity = opacity_steps[x] }
+  pixels.each_with_index { |p, x| p.opacity = opacity_steps[x] }
   grayrocks.store_pixels(0, y, cols, 1, pixels)
 end
 
 # Composite the mono version of the image over the color version.
 grayrocks.matte = true
 combine = rocks.composite(grayrocks, Magick::CenterGravity, Magick::OverCompositeOp)
-#combine.display
+# combine.display
 combine.write 'get_pixels.jpg'
 exit