[fpc-pascal] Graphing library
greim at schleibinger.com
Mon Nov 16 09:46:52 CET 2020
there is a bachelor thesis from Jörg Winkler, 2013 in the net (in German):
"OpenGL-basierter logischer Gerätetreiber für ein Grafisches Kernsystem"
Entwicklung eines logischen GKS Gerätetreibers
auf der Basis von OpenGL
It includes the source code (in C) . Seems to be a GKS to OpenGL software.
AFAIK the author is on GitHub, so may be you can ask him for some details or the source files:
--- original message ---
On November 15, 2020, 11:25 PM GMT+1 fpc-pascal at lists.freepascal.org wrote:
I don't know if this can help you, but in the 1980s I worked with
a library called GKS (graphic kernel system)
which I used to build such graphics like the following example:
This programs that did this were written in Pascal at that time.
It still works today for me (the customer still uses this
although is it C today, and GKS is not available any more.
What I did: the original GKS calls are written to files (some sort
of GKS metafile, but not the
original 1980s format), and then this file format is read by a C
which translates this (proprietary) format to HPGL. The HPGL files
are either sent to
HP plotters or translated to PDF using public domain software; see
the file above.
(GOUTHGPL was a Pascal program in the 1990s, too).
IMO, you could easily write the "GKS metafile format" with
in fact, it is simply is a sort of logfile of the GKS calls.
Here is an old paper about the GKS system:
The translator GOUTHGPL supports only a small subset of GKS; see
again the example picture above.
If you are interested for more details, you could contact me
Am 15.11.2020 um 09:33 schrieb Darius
Blaszyk via fpc-pascal:
> I am looking for a simple to use non-visual graphing> library to produce x-y plots in a raster file format (similar> to how pyplot works). Rather than developing something from> scratch or writing a wrapper to GNU plot (additional> dependency), I was hoping something like this already would> exist that I could build upon.
> Thank you for any tips!
> Rgds, Darius
> _______________________________________________>fpc-pascal maillist - fpc-pascal at lists.freepascal.org>https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
--- end of original message ---
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the fpc-pascal