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- Path: kdolan-mac.qualcomm.com!user
- From: xanthian@qualcomm.com (Kent Paul Dolan)
- Newsgroups: comp.sys.amiga.graphics,comp.sys.amiga.programmer,comp.sys.amiga.misc
- Subject: Re: Is there a CGM converter for the amiga?
- Date: 5 Mar 1996 05:35:42 GMT
- Organization: Birthright Party "The birthright of humankind is the stars."
- Message-ID: <xanthian-0403962135410001@kdolan-mac.qualcomm.com>
- References: <4gda7j$13o@news-a-eth.uni-c.dk> <ehb.02xd@draco.prima.ruhr.de> <4glvtm$ncp@news.uni-c.dk> <4gnsof$lst@serpens.rhein.de> <4gqpnv$45m@news.uni-c.dk>
- NNTP-Posting-Host: kdolan-mac.qualcomm.com
-
- In article <4gqpnv$45m@news.uni-c.dk>, perjac@inet.uni-c.dk (Per Jacobsen)
- wrote:
-
- > Michael van Elst (mlelstv@serpens.rhein.de) wrote:
- > > perjac@inet.uni-c.dk (Per Jacobsen) writes:
- >
- > > >Well since CGM is now an official MIME type it might show up on web
- > > >pages, a datatype would nice, but i haven't seen one yet.
- >
- > > Where is CGM specified ?
- >
- > I did a search and found that it's some sort of standard and one can buy
- > the specs from hm..some US standards commite, i don't know if they are on
- > the web.
-
- CGM (Computer Graphics Metafile) is an ISO and ANSI standard (naturally,
- my copy is at home and packed away, so I can't quote the number),
- available from American National Standards Institute, New York, New York,
- USA (I don't have the phone number, either) for very big bucks. It is
- actually three standards in one, one for a printable text encoding, one
- for a fairly verbose binary encoding, and one for a "save every bit you
- can squeeze out" binary encoding. I helped write it, but it's been twelve
- years, most of it is forgotten now.
-
- > I found a unix viewer with source on:
- >
- > ftp.cc.rl.ac.uk in /pub/graphics/ralcgm/
-
- Thanks for the pointer, I'll go take a look.
-
- > But it's a big program!
-
- Yeah, and arguably not worth porting any more; the CGM standard is _old_.
- It predates nicely typeset text, predates the dominance of raster graphics
- in the softcopy display market, predates any use of mixing data and code
- in "objects", etc. It was designed primarily to make it easy to make a
- tape copy of computer drawn engineering line drawing ("blueprint") data so
- it could be plotted later on an offline plotter, and has since been
- shoehorned into lots of commercial shrink wrapped software packages as an
- interchange format of last resort because for a long time it was the only
- international graphics archival standard going. It does have a raster
- encoding, but just barely, a of my copy.
-
- Its model of graphics, last time I looked, was pretty wimpy compared to
- the needs of photorealistic rendering, e.g.
-
- My copy is in one volume, I understand the most recent is in several
- volumes, each around US$100 in cost. Perhaps the functionality has gone
- up with the cost, though; I don't know.
-
- --
- Xanthian. | "..want the consequences of what you want.." |
- Kent, the man from xanth. | Neil A. Maxwell, LDS Apostle |
- Kent Paul Dolan ------------------------------------------------
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