Stellarium

Pole precession circles

Bug #1444323 reported by Alexander Wolf
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Stellarium
Fix Released
Wishlist
gzotti
Stellarium 0.14.0

Bug Description

Original message: https://sourceforge.net/p/stellarium/discussion/278769/thread/f8a6673f/

Stellarium could show the path of the precession cirles of the poles on the sky, so that you can see where it will go and how far in the future. Like this: http://www.germanicmythology.com/ASTRONOMY3/IMAGES/3Precession.gif

Related branches

lp:~georg-zotti/stellarium/gz_fix-ecliptic-obliquity
Alexander Wolf: Approve
gzotti: Needs Resubmitting
Diff: 2869 lines (+1419/-206)
28 files modified
README (+5/-1)
data/default_config.ini.cmake (+22/-6)
src/CMakeLists.txt (+19/-0)
src/core/StelCore.cpp (+82/-15)
src/core/StelCore.hpp (+61/-36)
src/core/StelObject.cpp (+39/-19)
src/core/StelObject.hpp (+12/-2)
src/core/StelObserver.cpp (+28/-2)
src/core/VecMath.hpp (+42/-2)
src/core/modules/GridLinesMgr.cpp (+273/-24)
src/core/modules/GridLinesMgr.hpp (+140/-17)
src/core/modules/Landscape.cpp (+6/-0)
src/core/modules/Planet.cpp (+62/-18)
src/core/modules/Planet.hpp (+9/-3)
src/core/modules/SolarSystem.cpp (+4/-0)
src/core/planetsephems/elp82b.h (+1/-1)
src/core/planetsephems/gust86.c (+1/-1)
src/core/planetsephems/gust86.h (+3/-3)
src/core/planetsephems/precession.c (+260/-0)
src/core/planetsephems/precession.h (+59/-0)
src/core/planetsephems/sidereal_time.c (+35/-20)
src/core/planetsephems/vsop87.h (+1/-1)
src/gui/ConfigurationDialog.cpp (+4/-1)
src/gui/LocationDialog.cpp (+1/-1)
src/gui/ViewDialog.cpp (+5/-1)
src/gui/viewDialog.ui (+89/-32)
src/tests/testPrecession.cpp (+121/-0)
src/tests/testPrecession.hpp (+35/-0)
lp:stellarium
Revision history for this message
gzotti (georg-zotti) wrote :

Well, it's not truly a circle, earth's axis tilt also changes. We could quite easily show small circles around the ecliptic poles, this refers to a "current" circle. (ArchaeoLines (untypical) or main program?)

Revision history for this message
Alexander Wolf (alexwolf) wrote :

I think this task requires some tool for some special celestial points, like planet trails. It can be implemented through method of scripting engine (it's very specific case of usage IMHO).

Revision history for this message
gzotti (georg-zotti) wrote :

r7605 in https://code.launchpad.net/~georg-zotti/stellarium/gz_fix-ecliptic-obliquity has introduced them.

Of course, I should likely prevent their display for non-earthbound observers...

Changed in stellarium:
assignee: nobody → gzotti (georg-zotti)
status: New → In Progress
Alexander Wolf (alexwolf)
Changed in stellarium:
milestone: none → 0.14.0
gzotti (georg-zotti)
Changed in stellarium:
status: In Progress → Fix Committed
Revision history for this message
Alexander Wolf (alexwolf) wrote :

A fix has been committed as revision 7748 of the trunk branch of Stellarium's Bazaar repository at Launchpad: http://bazaar.launchpad.net/~stellarium/stellarium/trunk/revision/7748

Alexander Wolf (alexwolf)
Changed in stellarium:
status: Fix Committed → Fix Released
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