Sha256: 522a6d5099f186b78124ebf47051cbbf653928b8f6c45634b1a40ab80f478369
Contents?: true
Size: 1.55 KB
Versions: 8
Compression:
Stored size: 1.55 KB
Contents
module Vips
# Operations can hint to the VIPS image IO
# system about the kind of demand geometry they prefer.
#
# These demand styles are given below in order of increasing
# restrictiveness. When demanding output from a pipeline,
# vips_image_generate()
# will use the most restrictive of the styles requested by the operations
# in the pipeline.
#
# * `:thinstrip` --- This operation would like to output strips
# the width of the image and a few pels high. This is option suitable
# for point-to-point operations, such as those in the arithmetic
# package.
#
# This option is only efficient for cases where each output pel depends
# upon the pel in the corresponding position in the input image.
#
# * `:fatstrip` --- This operation would like to output strips
# the width of the image and as high as possible. This option is
# suitable for area operations which do not violently transform
# coordinates, such as vips_conv().
#
# * `:smalltile` --- This is the most general demand format.
# Output is demanded in small (around 100x100 pel) sections. This style
# works reasonably efficiently, even for bizzare operations like 45
# degree rotate.
#
# * `:any` --- This image is not being demand-read from a disc
# file (even indirectly) so any demand style is OK. It's used for
# things like vips_black() where the pixels are calculated.
class DemandStyle
end
end
Version data entries
8 entries across 8 versions & 2 rubygems