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1.5.0CVS/W32: Strange eclipse shadow of Ganymed on Jupiter

Posted: 13.01.2007, 22:45
by Adirondack
This eclipse bug occurs with OpenGL2 renderpath:
cel://Follow/Jupiter/1997-11-11T04:37:02.00829?x=AIco820EV0RB&y=SLotbd4jsbr+/////////w&z=4EVCZFjkQkIt&ow=-0.589647&ox=-0.023250&oy=-0.806419&oz=-0.038259&select=Jupiter&fov=21.351719&ts=0.000000&ltd=0&rf=2398099&lm=0

The shadow of Ganymed looks lika a shadow path, while the shadows of Io and Callisto are fine.


In addition, the cel://URL from above doesn't work with 1.4.1 !


Adirondack

Posted: 14.01.2007, 03:37
by selden
What kind of system do you have?

I don't see any problem with the moon shadows on my system at home. The shadows of moons more distant from Jupiter have a larger penumbra, but that's appropriate, I think. (Callisto's shadow has a larger penumbra than Ganymede's shadow, which is larger than Io's.)

URLs record locations in Celestia's "universal" xyz coordinate system. Solar system URLs recorded under 1.5.0 can't work with older versions of Celestia because v1.5.0 places the solar barycenter at [0,0,0]. Previous versions of Celestia place the sun ~250AU away from the origin. As a result, Solar system bodies are in different locations.

URLs recorded by v1.5.0pre3 (but not pre2 or pre1) and later will include a version number so Celestia will be able to determine which coordinates should be used. But not yet.

System specs:

1GB 3.4GHz P4-550, WinXP Pro SP2
256MB GF 7800GTX(*), ForceWare v93.71
Celestia v1.5.0pre1, v1.5.0 cvs
====
(*) -- a Christmas present ! :)

Posted: 14.01.2007, 14:39
by Johaen
It also looks correct on my machine, in the sig. I should note that I'm checking with 1.5.0 pre2, and not anything in CVS.

Here's what it looks like on my PC:
Image

Posted: 14.01.2007, 17:48
by Adirondack
What kind of system do you have?

512 MB 2.0 GHz P4, WinXP SP2
128 MB GF6600, ForceWare v77.77
Celestia v1.5.0 cvs (Dec 12, 2006)

Well, my ForceWare is pretty old.
I will update the driver and the cvs-version tonight.

Nevertheless the triple eclipse looks strange with 77.77:

Image

If its a driver issue, shouldn't look Io and Callisto as strange as Ganymed?


Adirondack

Posted: 14.01.2007, 18:37
by t00fri
Everything is fine with me. Nothing like the image above.

Bye Fridger

Posted: 15.01.2007, 00:30
by symaski62
Adirondack wrote:
What kind of system do you have?
512 MB 2.0 GHz P4, WinXP SP2
128 MB GF6600, ForceWare v77.77
Celestia v1.5.0 cvs (Dec 12, 2006)

Well, my ForceWare is pretty old.
I will update the driver and the cvs-version tonight.

Nevertheless the triple eclipse looks strange with 77.77:

Image

If its a driver issue, shouldn't look Io and Callisto as strange as Ganymed?


Adirondack


ok

http://www.nvidia.de/object/winxp_2k_93.71_de.html

:wink:

windows XP SP2, 256mb RAW, AMD +2000 1.7 GHZ
128mb GeForce FX 5200 ForceWare 93.71 (french)
celestia 1.5.0 pre 2

CEL:URL :wink:

Posted: 15.01.2007, 09:24
by Adirondack
It's a driver issue, in deed! :oops:
Everything works fine now with 93.71.

symaski62 wrote:CEL:URL :wink:
Yeah, yeah ... I will remember this the next time. :roll:

Adirondack