Celestia Forums

Problem:
Eclipse shadows are cast by undrawn objects.

If one creates an ssc file defining a set of (spherical) objects at the same location
and uses Beginning and Ending declarations to control when they are supposed to be drawn,
Eclipse shadows are cast by the undrawn objects
causing half of the drawn object to be in the dark.

If one types a Ctrl-E several times, turning eclipse shadows off and on, one can see the dark side become visible and then become shaded again.

If one inserts an invalid declaration, so that only the first object in the ssc file is drawn, no eclipse shadows are seen.



This can be seen by installing this Addon:
http://www.lns.cornell.edu/~seb/celestia/begend.zip
(Which I've updated to comply with current Addon directory standards. It also includes a Cel:// url to take you to this viewpoint.)

System config:
256MB 500MHz P3, WinXP Pro SP1
128MB GF4 Ti4200, drivers v 56.72
Celestia built from CVS 21-Jul-04

Hey, THAT was fast !

It was just yesterday that I started playing around with my idea of an addon showing shells of the earths interior. I planned to check for some faulty ssc definition today. I didn't even THINK of asking about that problem, or that it could be more severe. So I can put this aside until the bug is fixed.

maxim

(Really quick the responses on this forum...)

I just checked in the fix for this 'shadows of the undrawn' problem.

--Chris

Chris,

Thanks!

I'll try it this evening.

Yup: the problem is fixed in the current CVS code.