@@ -1,40 +1,54 @@ require "rubygems" -require "RMagick" +require "rmagick" +require 'pp' -if !ARGV[0] - puts "Usage: polaroid.rb path-to-image" - exit +def exit_with_help_message + puts "Usage: #{$0} /path/to/image.png" + exit end -image = Magick::Image.read(ARGV[0]).first - -image.border!(18, 18, "#f0f0ff") - -# Bend the image -image.background_color = "none" - -amplitude = image.columns * 0.01 # vary according to taste -wavelength = image.rows * 2 - -image.rotate!(90) -image = image.wave(amplitude, wavelength) -image.rotate!(-90) - -# Make the shadow -shadow = image.flop -shadow = shadow.colorize(1, 1, 1, "gray75") # shadow color can vary to taste -shadow.background_color = "none" # was "none" -shadow.border!(10, 10, "white") -shadow = shadow.blur_image(0, 3) # shadow blurriness can vary according to taste - -# Composite image over shadow. The y-axis adjustment can vary according to taste. -image = shadow.composite(image, -amplitude/2, 5, Magick::OverCompositeOp) +module Magick + class Image + def polaroidify + image = self + image.border!(18, 18, "#f0f0ff") + image.background_color = "none" + + # Warpy + amplitude = image.columns * 0.01 + wavelength = image.rows * 2 + image.rotate!(90) + image = image.wave(amplitude, wavelength) + image.rotate!(-90) + + # Shadowy + shadow = image.flop + shadow = shadow.colorize(1, 1, 1, "gray75") + shadow.background_color = "none" + shadow.border!(10, 10, "white") + shadow = shadow.blur_image(0, 3) + + # Mergy + image = shadow.composite(image, -amplitude/2, 5, Magick::OverCompositeOp) + image.background_color = "white" + image.rotate!(-5) + image.trim! + + image + end + end +end -image.rotate!(-5) # vary according to taste -image.trim! +def write_to_file!(image) + out = @image_path.sub(/\./, "-print.") + puts "Writing #{out}" + image.write(out) +end -# Add -print to image basename, write to file. -out = ARGV[0].sub(/\./, "-print.") -puts "Writing #{out}" -image.write(out) +if $0 == __FILE__ + exit_with_help_message unless ARGV[0] && File.exists?(ARGV[0]) + @image_path = ARGV[0] + image = Magick::Image.read(@image_path).first.polaroidify + write_to_file!(image) +end \ No newline at end of file hacks/rb/polaroid.rb ae67b476546b21604d3cdaead620e602b20bfcae Marc Chung mchung@stargate.local http://github.com/mchung/mchung-code/commit/110fa07eb943c1a42b1926cdff298e2c1f9141bc 110fa07eb943c1a42b1926cdff298e2c1f9141bc 2008-07-06T11:48:34-07:00 2008-07-06T11:48:34-07:00 Idiomatic ruby style d6b7d558f97a3f565c1c5739cfe7032fbee15493 Marc Chung mchung@stargate.local