Yesterday I have posted a patch to sourceforge which enables arrow heads
to get filled. I have tested it only for postscript and x11 terminal.
Petr Mikulik has sent me an email where he suggests me to discuss my patch
at gnuplot-beta mailing list.
Here is what he wrote:
Comment By: Petr Mikulik (mikulik)
Date: 2002-07-22 18:21
Logged In: YES
Interesting patch, this functionality is really missing. I
have the following comments:
1. It uses PM3D functionality. Please accompany such code
with #ifdef PM3D ... #endif, and test whether it compiles
without PM3D defined.
2. Your patch changes terminal API for arrows. This is a
major change which should be discussed at info-gnuplot-beta
mailing list. Please subscribe.
Thus, in order not to crash gnuplot when output is directed
to terminals not using do_arrow(), but having their own
_arrow() routine (e.g. fig, metapost, et al), I propose:
1. Don't change terminal API but use the same nasty hack
I've done for head length+angle using global variables:
int curr_arrow_headlength; /* access head length + angle
without changing API */
double curr_arrow_headangle; /* angle in degrees */
With that, I think the patch could be submitted -- but
please discuss at gnuplot-beta anyway.
2. Propose a change of the _arrow() terminal API so that the
last parameter is a structure with head options. This would
make it consistent over all terminals and would get rid of
those nasty hacks.
Thus, my questions are:
What do you think, should I introduce a hack in order to avoid changing
the API? Or would it be better to change the API as Petr has suggested?
I would prefer a change of the API since this would make future
Harald Harders Langer Kamp 8
Institut f=FCr Werkstoffe D-38106 Braunschweig
Technische Universit=E4t Braunschweig Germany
E-Mail: h.harders@... Tel: +49 (0)5 31 - 3 91 - 30 62
WWW : http://www.tu-bs.de/institute/ifw/ Fax: +49 (0)5 31 - 3 91 - 30 58