Emitting Graphics through C

• To: "WWW CL" <www-cl@ai.mit.edu>
• Subject: Emitting Graphics through C
• From: "Byron Davies" <Byron_Davies@mesaqm.sps.mot.com>
• Date: 23 Feb 1996 12:50:54 -0700
• Sender: owner-www-cl@ai.mit.edu

At Motorola, I'm experimenting with CL-HTTP to display current, historical,
and projected manufacturing data on the (internal) web.  Our pre-web
application, in MCL, uses an outliner browser (Finder-like, implemented in
Fred) and graphical charts to display manufacturing data.

Converting the outliner browser to emit HTML is going well, though the style
of interaction is more like the pre-twist-down Finder.  It brings up a new web
page with every expansion instead of expanding in place with indentation.  (I
hope to do better with Java.)

I need some suggestions, however, on how to transmit graphics through CL-HTTP.
 Suppose I have created a view and painted graphics to it.  How do I then
convert that to GIF or JPEG for transmission?  I would strongly prefer not to
create an intermediate file.  Are there Lisp utilities, or do I need to link
in some foreign code?

Byron Davies
Motorola Semiconductor

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