[Kstars-devel] KStars vs Stellarium - Graphics

[Akarsh Simha]

> It's possible that it would be as easy as deriving SkyMap from
> QGLWidget instead of QWidget.  However, openGL has been attempted
> before for kstars, a long time ago.  OpenGL stores the items being
> drawn on-screen in a buffer list, and internally takes care of all of
> the screen and horizon clipping that we currently do manually.  As I
> recall, the problem was that it's slow to modify this list of drawable
> objects.  Since we want the stars to change apparent size as you zoom
> in/out, we'd be essentially rebuilding the list of drawn objects
> whenever the user zooms.

Stellarium seems to do it pretty fast. Maybe we should look into their
source code. Or maybe it's just that machines have gotten better!

Regards
Akarsh
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