Hi!
Start with src/modules/GridLinesMgr.(hpp|cpp). When you understand how
it works, it should be moderately easy to make e.g. a variant of
ecliptic of date starting at Spica. You should however not touch
precession code, unless you need to implement a particular Indian model.
But then you need different models for everything!
Out of cultural astronomy interest: Do you have some english-language
papers on this coordinate system? Is there a single "Indian" tradition,
or are there several different "schools"? Maybe this tradition could be
added in the description of the "Indian" skyculture. However, the main
program cannot show this. Maybe a future "Cultures" plugin?
Good luck!
Georg
Am 25.09.2017 13:31, schrieb Shriramana Sharma:
Hello. I'm a student/researcher of traditional Indian astronomy where
the longitudes of bodies are given w.r.t. a zero point diametrically
opposite Spica i.e. so that the longitude of Spica is fixed at 180°.
I would like to use Stellarium to illustrate the movement of the
planets with this grid of reference displayed as an alternate to the
ecliptic of date. I realize I will have to tweak the precession code
for this (IIUC).
Please guide as to where in the code I should dig to find this. I have
downloaded the 0.16.1 tarball.
Thank you!
--
Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा
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--
Dipl.-Ing. Dr. Georg Zotti
Ludwig Boltzmann Institute for
Archaeological Prospection and
Virtual Archaeology
(LBI ArchPro)
Hohe Warte 38
A-1190 Wien
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