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Size: 1.22 KB

Versions: 34

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Stored size: 1.22 KB

Contents

require 'RMagick'
include Magick

# Draw a big red Bezier curve on a transparent background.
img = Image.new(340, 120) {self.background_color = 'none'}
gc = Draw.new
gc.fill('none')
gc.stroke('red')
gc.stroke_linecap('round')
gc.stroke_width(10)
gc.bezier(20, 60, 20,-90, 320,210, 320,60)
gc.draw(img)

# Composite it onto a white background, draw a border around the result,
# write it to the "before" file.
before = img.copy
bg = Image.new(before.columns, before.rows) {self.background_color='white'}
before = bg.composite(before, CenterGravity, OverCompositeOp)
before.border!(1,1,'gray80')
before.write('shadow_before.gif')

begin
    # Create the shadow.
    shadow = img.shadow()
    # Composite the original image over the shadow, composite the result
    # onto a white background, add a border, write it to the "after" file.
    shadow = shadow.composite(img, NorthWestGravity, OverCompositeOp)
    bg = Image.new(shadow.columns, shadow.rows) {self.background_color='white'}
    after = bg.composite(shadow, CenterGravity, OverCompositeOp)
    after.border!(1,1,'gray80')
rescue NotImplementedError
    after = Image.read('images/notimplemented.gif').first
    after.resize!(before.columns, before.rows)
end

after.write('shadow_after.gif')

Version data entries

34 entries across 34 versions & 1 rubygems

Version Path
rmagick-1.10.0 doc/ex/shadow.rb
rmagick-1.10.1 doc/ex/shadow.rb
rmagick-1.11.0 doc/ex/shadow.rb
rmagick-1.13.0 doc/ex/shadow.rb
rmagick-1.11.1 doc/ex/shadow.rb
rmagick-1.12.0 doc/ex/shadow.rb
rmagick-1.15.1 doc/ex/shadow.rb
rmagick-1.15.10 doc/ex/shadow.rb
rmagick-1.14.1 doc/ex/shadow.rb
rmagick-1.14.0 doc/ex/shadow.rb
rmagick-1.15.0 doc/ex/shadow.rb
rmagick-1.15.14 doc/ex/shadow.rb
rmagick-1.15.12 doc/ex/shadow.rb
rmagick-1.15.11 doc/ex/shadow.rb
rmagick-1.15.15 doc/ex/shadow.rb
rmagick-1.15.13 doc/ex/shadow.rb
rmagick-1.15.3 doc/ex/shadow.rb
rmagick-1.15.2 doc/ex/shadow.rb
rmagick-1.15.16 doc/ex/shadow.rb
rmagick-1.15.17 doc/ex/shadow.rb