Could you please provide a URL of the viewpoint when you look at Pharos and see the orbit breaks?
As I said, I don't see them when I look.
Moon satellite orbit bug
Here it is, Selden :
cel://Follow/Ast 23/2004-08-07T00:26:27.08099?x=uyxOkgPrDFLzrY0&y=4TK08HySsR/R6f/+/////w&z=GcgKCK8/0DchHbf//////w&ow=0.061785&ox=-0.713806&oy=0.009604&oz=-0.697547&select=Ast 23&fov=38.300716&ts=1.000000<d=0&rf=578995&lm=39
cel://Follow/Ast 23/2004-08-07T00:26:27.08099?x=uyxOkgPrDFLzrY0&y=4TK08HySsR/R6f/+/////w&z=GcgKCK8/0DchHbf//////w&ow=0.061785&ox=-0.713806&oy=0.009604&oz=-0.697547&select=Ast 23&fov=38.300716&ts=1.000000<d=0&rf=578995&lm=39
Last edited by Cham on 18.09.2006, 22:35, edited 2 times in total.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"
There's a problem with those URL's. I can't use them !!
Here's another one without a space in it :
cel://Follow/Vuna/2004-08-07T00:26:59.8 ... 7811&lm=32
Picture below :
Here's another one without a space in it :
cel://Follow/Vuna/2004-08-07T00:26:59.8 ... 7811&lm=32
Picture below :
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"
Cham wrote:There's a problem with those URL's. I can't use them !!
Hi Cham, you may need to edit the Celestia URLs to get them to work properly in this forum. First, you need to replace all the spaces with %20. This will make the URL very long, so you may find it helpful to give the URL an alias so it is shorter. I did this with the URL I posted earlier in this thread and it worked fine.
Perhaps Celstia needs to change the format in which it outputs the URLs? Replacing the spaces with %20 should be sufficient.
Cham,
I think perhaps I've been able to reproduce your "breaks", but I'm not sure.
The only way I can see anything like what you see is if I enable anti-aliasing.
Here's what I see with the maximum anti-aliasing enabled. It's labelled 8xS on my Nvidia GF 6600 GT. I'm sure that's 8x antialiasing, but I'm not sure what the S stands for.
and here's what I see with anti-aliasing disabled entirely.
Note that the anti-aliased lines become very dim where the non-anti-aliased lines step from one scanline to the next. When I look at a lower resolution version of the same screengrab, the dim line segments become invisible.
What does changing the anti-aliasing setting do to the lines on your Mac?
I think perhaps I've been able to reproduce your "breaks", but I'm not sure.
The only way I can see anything like what you see is if I enable anti-aliasing.
Here's what I see with the maximum anti-aliasing enabled. It's labelled 8xS on my Nvidia GF 6600 GT. I'm sure that's 8x antialiasing, but I'm not sure what the S stands for.
and here's what I see with anti-aliasing disabled entirely.
Note that the anti-aliased lines become very dim where the non-anti-aliased lines step from one scanline to the next. When I look at a lower resolution version of the same screengrab, the dim line segments become invisible.
What does changing the anti-aliasing setting do to the lines on your Mac?
Selden
Selden,
the problem I have isn't related to antialisasing (well, actually, I didn't tested without antialiasing, since it's my card which is doing it automatically). Look on the picture below. The "holes" are always "close" to the front object, and as you can see, it doesn't seems to be related to antialiasing. Also, I recall you that I never had these holes in any other version of Celestia :
Please, stop time in Celestia, use the URL below and CLICK-FOLLOW the asteroid Ast 75 shown here (it isn't selected in the URL because of that space problem in the name). VERY SLIGHTLY move your point of view around that asteroid to see the behavior of the blue lines in the background. What I get is changing and moving "holes". Sometimes, the curves get drawn correctly (holes may disappear), but moving gently may put some other holes again.
cel://Follow/Vuna/2004-08-07T00:28:19.7 ... 8327&lm=32
the problem I have isn't related to antialisasing (well, actually, I didn't tested without antialiasing, since it's my card which is doing it automatically). Look on the picture below. The "holes" are always "close" to the front object, and as you can see, it doesn't seems to be related to antialiasing. Also, I recall you that I never had these holes in any other version of Celestia :
Please, stop time in Celestia, use the URL below and CLICK-FOLLOW the asteroid Ast 75 shown here (it isn't selected in the URL because of that space problem in the name). VERY SLIGHTLY move your point of view around that asteroid to see the behavior of the blue lines in the background. What I get is changing and moving "holes". Sometimes, the curves get drawn correctly (holes may disappear), but moving gently may put some other holes again.
cel://Follow/Vuna/2004-08-07T00:28:19.7 ... 8327&lm=32
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"
Cham,
What color depth is your system configured to use? If it's set for only 16bit color and not 24bit color, for example, it might explain why dim segments of lines are not being drawn and why you have problems seeing differences among Fridger's galaxy labels.
Unfortunately, I am unable to persuade Windows Celestia to draw dashed lines like those you see, even when varying anti-aliasing and color depth.
In order to avoid the URL space problem, you might consider renaming your Asteroids to be AST_nn, with an underscore instead of a space.
I did encounter another problem, though: Mac URLs currently are not compatible with Windows URLs. Using your URL, my viewpoint wound up far away from the asteroid.
What color depth is your system configured to use? If it's set for only 16bit color and not 24bit color, for example, it might explain why dim segments of lines are not being drawn and why you have problems seeing differences among Fridger's galaxy labels.
Unfortunately, I am unable to persuade Windows Celestia to draw dashed lines like those you see, even when varying anti-aliasing and color depth.
In order to avoid the URL space problem, you might consider renaming your Asteroids to be AST_nn, with an underscore instead of a space.
I did encounter another problem, though: Mac URLs currently are not compatible with Windows URLs. Using your URL, my viewpoint wound up far away from the asteroid.
Selden
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chris
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Cham wrote:Selden,
Fridger's labels are all fine now, with his new code.
My monitor's bit depth is full 32 bit (or 24 bit?).
Do you have an ATI graphics card in your system Cham? I wonder if the gaps you're seen are caused by the way that ATI chips clip lines. Drawing orbits can present some challenging clipping precision issues for graphics hardware. I'll do some investigation with your add-on; I have an instrumented version of Celestia that dumps information on z clipping.
--Chris
Chris,
my video card is an ATI x850 XT (256 MB). System is OS X Tiger 10.4.7.
As I mentioned, the orbits didn't have any problems with all the previous versions of Celestia.
my video card is an ATI x850 XT (256 MB). System is OS X Tiger 10.4.7.
As I mentioned, the orbits didn't have any problems with all the previous versions of Celestia.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"
I'm now totally confident that the orbit bug (holes and dash curve) is correlated to the presence of an object in front. Here's another example :
Moving the point of view away from the object removes the holes systematically. The bug is very easy to reproduce on my system. It occurs only if there's an object on the foreground. Is it another depth sorting bug ?
Moving the point of view away from the object removes the holes systematically. The bug is very easy to reproduce on my system. It occurs only if there's an object on the foreground. Is it another depth sorting bug ?
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"