Sha256: c710b993b4aa32e092937ca7982a081d803f52ad0bb6bd00c183595e761a5701
Contents?: true
Size: 794 Bytes
Versions: 13
Compression:
Stored size: 794 Bytes
Contents
#!/usr/bin/env ruby -w require 'rmagick' img = Magick::Image.new(40, 40) {self.background_color = 'lightcyan2'} # The view is 400 pixels square, starting # column 10, row 5 from the top of the image. img.view(10, 5, 20, 20) do |view| # Set all the pixels in the view to green. view[][] = Magick::Pixel.new(0, Magick::QuantumRange) # Change the top and bottom rows to red. view[0][] = 'red' view[-1,1][] = 'red' # Set 6 pixels to black. view[[13,15]][[12,14,16]] = 'black' # Set 1 pixel to yellow. view[5][7] = 'yellow' # Change the green channel of all the # pixels on row 8. view[8][].green = Magick::QuantumRange/2 # Change the blue channel of 8 pixels # on column 10. view[4,8][10].blue = Magick::QuantumRange end img.scale(5).write('viewex.gif') exit
Version data entries
13 entries across 13 versions & 3 rubygems