The links to the samples in the table are not working :
http://www.newlisp.org/index.cgi?Postscript
To do some artwork i'm looking for a possibility to convert postscript which was generated with newLISP to an image-format like gif or png.
One way is ghostview and ghostscript, but there should be a simpler way .
The idea is to have a minimal portable system which you can put on you USB-Stick ( together with newLISP, which is no problem )
all links to images and example files are now restored:
http://www.newlisp.org/index.cgi?Postscript
Quote from: "didi"
It's easy to get PNG or something out of the HTML/Canvas module, as long as you have a capable browser.
Or, if you can do your graphics work entirely on a newLISP-GS canvas, there's a gs:export function which can create a PNG file of the current canvas.
I've used all 3 methods (examples on the blog); choose which one depending on the type of graphics you want to create, perhaps.
Thanks for your tip, is it possible to have a portable newlisp-gs version, so that you need not to install java ?
The program should really be portable, so that i can run it with an usb-stick on different windows-pc-systems . As always i'm looking for the smallest possible solution .
Just found PNGwriter on sourceforge.net , seem to be small and easy to use.
Thinking about an interface to newLISP .
Ok - pngwriter is easy at the first sight , but requires zlib, libpng, freetype ... not my dream-solution.
Quote from: "didi"
There is also the popular GD library:
//http://www.libgd.org/
With bindings for:
//http://www.libgd.org/Binders
* 1 C#
* 2 Clip
* 3 Common Lisp
* 4 D
* 5 Fly (Any Language)
* 6 Javascript
* 7 Lua
* 8 OCaml
* 9 Octave
* 10 Pascal
* 11 Perl
* 12 PHP
* 13 Python
* 14 REXX
* 15 Ruby
* 16 Scheme
* 17 Tcl
Although this is a very old binding, Fly is a quick way to start on Windows. At least for evaluation purposes. You write a Fly script from newLISP "on the fly" and then (exec ... it.
//ftp://ftp.unimelb.edu.au/pub/www/tools/unix/fly/fly-1.6.0.WinNT.zip
The PHP GD binding is included in the PHP distro, and I think it is the most used version... While writing and executing PHP scripts from newLISP maybe a pain, there is good documentation for PHP GD and many third party scripts to search out and study...
And there are Common Lisp and Scheme distros that maybe coerced into a newLISP version... Being that newLISP aspires to excel at CGI, this would be a great addition to standard newLISP modules... (hint, hint ;)
-- xytroxon
What is needed for newLISP are C bindings, for C++ bindings one would have to write extra code.
What what about:
http://www.imagemagick.org/script/
it has C bindings, one can import to newLISP
Command line tools and libraries are available for all mayor platforms and there is even a book how to use it:
http://www.imagemagick.org/script/binary-releases.php
Thanks Xytroxon , fly is with its 140kB really simple to use and generate gif-graphics and its portable - should be no problem to start it out of newLISP.
With GD maybe the same could be written generating png-graphics .
Thanks Lutz for the hint to imagemagick, it was the first program which immediately worked on my windows-pc . In some minutes i was able to generate graphics with text by using the convert program.
The convert program is only 180kB in size, but it needs different dlls which are some MB's . Maybe somehow it is possible to take only the things which are really needed .
It would be super to get a combination of newLISP and maybe a kind of fly under 1MB, and which is portable on an usb-stick .