Scale

Report bugs, bug fixes and workarounds here.
Topic author
DAllen
Posts: 4
Joined: 29.08.2006
With us: 18 years 2 months

Scale

Post #1by DAllen » 29.08.2006, 16:19

I don?€™t know if it me, but objects seem smaller than they are suppose to be, from earths orbit the moon looks like nothing more than a dot that blends in with the rest of the stars, wouldn?€™t be able to find it if I didn?€™t have render moon labels checked. But I know this isn?€™t correct because I can see the moon just fine by looking out my window

I tried changing the field of view to about 6 that seemed a more appropriate size, but that made navigation even more awkward.

:(

Avatar
Cham M
Posts: 4324
Joined: 14.01.2004
Age: 60
With us: 20 years 10 months
Location: Montreal

Post #2by Cham » 29.08.2006, 16:53

This is all about FOV (field of view). Just check the angular size at bottom-right of your screen. You can change it easily using shift-drag the mouse.
"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!"

Topic author
DAllen
Posts: 4
Joined: 29.08.2006
With us: 18 years 2 months

Post #3by DAllen » 29.08.2006, 17:57

I said I tried to change the field of view but it makes navigating harder, you lose that good virtual feel you get with default FOV has, and getting around is like trying to walk while looking threw binoculars. It?€™s makes for a nicer screen shot but its very disorienting for getting around.

Avatar
Cham M
Posts: 4324
Joined: 14.01.2004
Age: 60
With us: 20 years 10 months
Location: Montreal

Post #4by Cham » 29.08.2006, 19:57

I don't get it. Using a FOV of about 35 or 45 degrees is perfect to me. What is your problem, exactly ? You can see the Moon like in real life just by changing the FOV and the distance (zooming with ctrl-mouse) at the same time. This is like a real camera, that's alll.
"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!"

Malenfant
Posts: 1412
Joined: 24.08.2005
With us: 19 years 3 months

Post #5by Malenfant » 29.08.2006, 21:29

I think I read somewhere that humans naturally have a field of view of about 120 degrees... and if you try looking at a FOV that big in Celestia you'll see it's quite distorted and things look tiny.

The problem is that we're trying to cram an entire field of view going out to infinity onto a small computer screen a few feet away from your eyes. Unfortunately this is going to mean that things aren't going to look quite the size that they appear to be in reality.

In other words, it's a feature, not a bug. Yes, if you want to see detail you'll have to zoom in to a small FOV, and yes that does mean it's like walking around looking through binoculars. But I'm afraid you'll just have to adapt to it.
My Celestia page: Spica system, planetary magnitudes script, updated demo.cel, Quad system

Kolano
Posts: 125
Joined: 15.02.2005
With us: 19 years 9 months
Location: New Jersey

Post #6by Kolano » 30.08.2006, 05:04

To Cham's point...

Try to imagine a camera that takes a 120' picture. One that takes a picture as wide across as your vision from peripheral to peripheral. That would be a really wide camera angle, and a similarly wide picture.

If you now imagine the picture taken by that camera held in your hand, how big is the Moon?

Celestia can only offer a small window on what one might be able to see, or I guess more acurately, could offer a similar window but if it did so things would be even smaller.

---------------
To your original point,

Yes, the moon does appear like a spec when viewed in celectia "from earths orbit", but consider how big the earth is then. Even if it is cut off the screen, how big would it be if you had a big enough screen to show it? I'd guess only < a meter or so wide. Given relative distance (which could vary widely), it doesn't seem all that strange that the moon is shown small.
System:
Asus A8N-SLI Premium nForce4 SLI
AMD Athlon 64 X2 4200+
2xeVGA GeForce 7800 GTX 256MB
2gb Dual Channel DDR (400) 3200


Return to “Bugs”