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vectorcraft/docs
dotCooCoo 19ab993479 EPS: an image drawn more than once writes its samples once
An image placed several times in an EPS file (the pieces of an envelope
or a Warp effect, copies of one image, a symbol's instances) wrote its
whole ASCII85 data at every placement: 200 copies for one envelope at
the default fidelity, enough for a large photo to pass the 256 MB page
limit and lose pieces.

The samples of such an image are now written once in the setup as
VCim<i>, and each placement reads them from there:
- Level 3: a ReusableStreamDecode stream, rewound with resetfile and
  read through a new FlateDecode filter at each placement.
- Level 2: an array of strings of at most 49,152 compressed bytes, fed
  to RunLengthDecode by a procedure.

An image placed once is written where it is drawn, byte for byte as
before. The page limit counts a repeated image's samples once, and a
colorized image is reused per ink.
2026-11-13 05:38:06 -08:00
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