Sha256: d01af46099b9110bfefa78685aaf929e52605cb83531cc5397369d70d0bade19
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Size: 787 Bytes
Versions: 38
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Stored size: 787 Bytes
Contents
#! /usr/local/bin/ruby -w
require 'RMagick'
include Magick
img = 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[][] = Pixel.new(0, MaxRGB)
# 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 = MaxRGB/2
# Change the blue channel of 8 pixels
# on column 10.
view[4,8][10].blue = MaxRGB
end
img.scale(5).write("viewex.gif")
exit
Version data entries
38 entries across 38 versions & 1 rubygems