class Vips::Size
Controls whether an operation should upsize, downsize, or both up and downsize.
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`:both` size both up and down
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`:up` only upsize
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`:down` only downsize
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`:force` change aspect ratio
Controls whether an operation should upsize, downsize, or both up and downsize.
`:both` size both up and down
`:up` only upsize
`:down` only downsize
`:force` change aspect ratio