[Stellarium-pubdevel] How to implement alternate lat/lon grid?

2017-09-25 Thread 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

Re: [Stellarium-pubdevel] How to implement alternate lat/lon grid?

2017-09-25 Thread Georg Zotti
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 ne