stars

Started by StickerSticker, January 19, 2007, 03:45:07 pm

Previous topic - Next topic

StickerSticker

Is there/will there be some way to make stars randomly positioned all over the place? I know there really isn't one right now... but maybe you could do it with the nodes somehow, lol.

Will

no but you can place a starfield image in the backround to have stars int he scene.

search for it in the Terragen 2 disscusion fourm and there are sevral threads about it.

Regards,

Will
The world is round... so you have to use spherical projection.

Cyber-Angel

This is what the TG2 FAQ has to say on the subject of "Satterfield's".

"Will we be able to have star fields and the like? How will they be generated?

This is something we're looking at. We would like to have the facility to use real star map data, but of course generation of fractal star fields is certainly something we would include."

I think that since the FAQ was posted some time ago we should have one of the Planetside staff tell us the current thinking behind such a feature, and where necessary make the necessary change/s to the FAQ.

Regards to you. 


Cyber-Angel

StickerSticker

Ya, because as great as importing your own image for stars is. Those stars aren't actually bright enough to effect the terrain and stuff. Plus i suppose you'd have to match all the atmo in terragen to match the colours of the imported star sky.

So ya, a generated starfield would be so cool

David Burnett

There's a first go at stars without an image map.

No colours yet just distribution and shape.


David Burnett

And there it is, being used in a quick scene.

rcallicotte

Thanks David B.  Really nice.  This could be useful.
So this is Disney World.  Can we live here?

Will

Neat man keep it up.

Regards,

Will
The world is round... so you have to use spherical projection.

Oshyan

Stars without an image map are already possible, as David showed. Nice work btw. :) We may include a special "starfield" shader or function, or simply include instructions/example files for how to use this existing technique to get the effect.

Stars don't really affect lighting in the real world in any meaningful, visible way. Although you may have ever so slightly more light on a clear, moonless night vs. a cloudy one, realistically speaking it's not worth trying to simulate star light when you could just slightly increase ambient and get the same effect with far less render time and effort.

- Oshyan

StickerSticker

Ya. but if we're doing deep space asteroids or foreign planets then they could potentially have stars close enough to effect the lighting. Plus, would the stars David showed be 3 dimensionally all around the universe? Because a reflective object in the middle of space would reflect lights all around it.

David Burnett

January 27, 2007, 12:22:33 pm #10 Last Edit: January 27, 2007, 12:28:07 pm by David Burnett
It looks like the background does not get reflected, unless I'm doing something wrong...

[attachthumb=1]


On the other hand I've added some colour to my stars., although to get a mix of white, yellow and
red I had to go to some over the top extremes.

[attachthumb=3]
[attachthumb=2]





┬žardine

Quote from: David Burnett on January 27, 2007, 12:22:33 pm
On the other hand I've added some colour to my stars., although to get a mix of white, yellow and
red I had to go to some over the top extremes.


Wow, that is extreme  :o
I played around trying to get multiple colors but had let it drop as it wasn't top priority.
Thanks for the post!

Oshyan

Correct, the "background shader" is currently not reflected. This will be fixed, of course.

The current method of handling stars through noise shaders would not provide for lighting when you are closer to a particular "star" in any location, of course. It is merely a 2 dimensional effect. TG2 is not a galaxy simulator so such 'real star' functionality is not likely to be implemented any time soon. If you wanted local stars contributing to lighting, simply create new suns or light sources. The star background effect is really all that is needed for most cases considering the tremendous distance between stars.

- Oshyan

RedSquare

February 03, 2007, 09:40:54 pm #13 Last Edit: February 03, 2007, 09:44:08 pm by RedSquare
Hmm, stars.

Well I was rendering this wet look terrain and decided to track back a bit.  Did a trial render and lo, hot spots sprung up willy nilly not exactly stars but decidedly odd.  I can't render larger than this as this .tgd always crashes.   ::)

Cheers

PS I realise of course that the reflective shader may have had some influence in this.  ;)