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module Vips
# When the edges of an image are extended, you can specify
# how you want the extension done.
# See {Image#embed}, {Image#conv}, {Image#affine} and
# so on.
#
# * `:black` new pixels are black, ie. all bits are zero.
# * `:copy` each new pixel takes the value of the nearest edge pixel
# * `:repeat` the image is tiled to fill the new area
# * `:mirror` the image is reflected and tiled to reduce hash edges
# * `:white` new pixels are white, ie. all bits are set
# * `:background` colour set from the @background property
class Extend < Symbol
end
end
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