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Compression controls how much of the image is compressed into the
facets and the setting is a percentage of the image size. How the
facets are filled depends partly on the Width
setting too.
Since Compression only compresses and doesn't expand, a small setting
can select less than enough of the image to fill the facets. For
example if Width is 20 and compression is 5, then only 5% of the
image is selected for filling the facets and that's not enough to
fill the width of 20%. When this happens the plugin ignores the
Compression setting and fills the facets with enough of the image
to fill the facets with an uncompressed sample.
So Compression starts to work when it selects a part of the
image that's greater than the facet width. The position in the image
relative to the outer edge where the compression sample begins
is also dependent on the Depth setting.
See the Depth help page for more information
about how that works.
The following example shows Compression at two different settings.
Compression = 50
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Compression = 100
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