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- From: idg10@cl.cam.ac.uk (I.D. Griffiths)
- Subject: Re: EPS files
- Message-ID: <1993Jan12.111800.15139@infodev.cam.ac.uk>
- Sender: news@infodev.cam.ac.uk (USENET news)
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- Organization: U of Cambridge Computer Lab, UK
- References: <ARM200-921214124010-52326667*@MHS <1992Dec23.155806.22223@gec-rl-hrc.co.uk>
- Date: Tue, 12 Jan 1993 11:18:00 GMT
- Lines: 31
-
- In article <1992Dec23.155806.22223@gec-rl-hrc.co.uk>, rknight@gec-rl-hrc.co.uk (Roger Knight (B21)) writes:
- |> I recently tried to export the EPS from Mentor Graphics CAD tools into
- |> !Artworks with no success whatsoever. Have CC produced a proper EPS
- |> interpreter for !Artworks? I suspect they've hard-coded the macros which
- |> Corel Draw, Adobe etc. use in their EPS files instead of reading the
- |> full PS prolog.
- |>
-
- Well, they've written a postscript interpretter, it's called Showpage...
- EPS files are generally files produced by drawing packages which expect to
- have a number of library commands built in (e.g. fountain fills and the
- like) but don't actually include these commands in the file, since they
- are being used to transfer information, rather than being printable, and
- rely on the package loading them to know what these routines do.
-
- Writing a general interpretter to take prologs including these routines and
- translating them into and Artworks file would be very inefficient, since
- it would not be able to turn objects into anything much more sophisticated
- than paths (so a bit like exporting something with graduated fills and
- blends into draw - it works but you loose a lot of information) and would
- also be rather hard, since you would need to have a postscript interpretter,
- which you don't need to read EPS files (since they're not really programs, but
- a postscript representation of a data structure), and then you would have
- problems with programs possibly not terminating, and it all gets a bit
- horrid.
-
- So no basically. Artworks is designed to import from the EPS files it can
- export to, and if it manages much better than this, then you're simply
- lucky.
-
- Ian Griffiths
-