World: r3wp

Sorry about that.

>> do http://home.tiscali.dk/john.niclasen/postscript/postscript.r
connecting to: home.tiscali.dk

** User Error: Error.  Target url: http://home.tiscali.dk/john.niclasen/postscript/postscript.r
could not be retr
ieved.  Server respons...

** Near: do http://home.tiscali.dk/john.niclasen/postscript/postscript.r
>>

Local cache?

less haste less waste ! :)

no,it's a 404 response.

same here

It worked for me just before, now it doesn't!?? Weird, I get same 
error now.

I'll check with ftp ...

Strange, I can see the script on the server with ftp, but I can't 
reach it with browser or rebol.

Any ideas?

must be a case problem.

works here ok, must be a connection problem

yes, try now

now it works

Now it works. It seems, it take a little time, before tiscali makes 
content reachable.

Ok, looks okay.  But each element needs to be placed on the page.

?

you need to tell the postscript engine where to place the text.

eg. 72 72 moveto

which is one inch from the left bottom edge

It's a start.
What happen, if you leave out that part?

nothing happens I suspect.

there's also a postscript preamble or header.

%!PS-Adobe-3.0
%%Creator: Synapse-EMR 3.01
%%LanguageLevel: 2

Oh, misunderstood.
Try:
s: postscript [font ["Times-Roman" 20] [at 72x72 "Hello World!"]]

You can position with AT pair!

Now the dialect has to be defined precisely with all the functionality, 
we want.

gsave
 .75 setgray
 /Helvetica-Bold findfont 72 scalefont setfont
 72 100 moveto
 (Hello World!)	 show
 grestore

I would save the state and then restore it.

I need to learn more about PostScript.

Do you have to specify the pen colour or not ?

this ..  .75 setgray uses a gray colour for the text.

The dialect can't cope with that yet.

This is a good start though.

So far, you can specify font, set position and print text.

so, you need also the %! at the beginning, and a showpage at the 
end.

things like 'box can be defined as a function in postscript.

Desitions have to be made about the dialect structure. Should the 
outer block consist of font-specifications and pages, or isn't that 
structure the best for PS? A better understanding of PS is needed 
to answer.

so, you would probably need some predefined functions that are also 
emitted.

Is the main aim to do text, or translate draw images?

I would aim for an implementation of PS functionality as a REBOL 
dialect. Nothing to do with draw yet.

we have Gabriele's pdf dialect to use a model.

his dialect must cover the same problems .. as pdf is a subset of 
postscript.

at 72x72 font Helvetica-Bold 6.0 "Hello World!"

I'll look at all the PS operators to get a view of the whole thing. 
Then define a structure for the dialect (probably top-concept of 
a page), and then implement the operators most needed.

this looks easier to write.

Would it be normal in PS to define the font before anything else, 
and then describe pages with paths? Is that the structure?

I wonder if we can't just use Gabriele's dialect and build a different 
emitter.

I'm not sure .. I've only read about postscript in the last day.

It'll take time for me to read others dialect rules. It'll probably 
be faster for me to make the dialect, so I know, what's going on 
everywhere.