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Contents
# Ccreate a semi-transparent title for an image.
require 'rmagick'
include Magick
puts <<END_INFO
This example uses a semi-transparent background color to create a title.
View the resulting image by entering the command: display image_opacity.miff
END_INFO
balloons = Image.read('../doc/ex/images/Hot_Air_Balloons_H.jpg').first
legend = Image.new(160, 50) { self.background_color = '#ffffffc0' }
gc = Draw.new
gc.annotate(legend, 0, 0, 0, 0, 'Balloon Day!\\nFri May 2 2003') do
self.gravity = CenterGravity
self.stroke = 'transparent'
self.fill = 'white'
self.pointsize = 18
end
result = balloons.composite(legend, SouthGravity, OverCompositeOp)
puts '...Writing image_opacity.miff'
result.write 'image_opacity.miff'
exit
Version data entries
13 entries across 13 versions & 3 rubygems