hmmmh?

[j meyer]

I really don't know.Obviously it's due to splitting,but
why that happens and why you get dots on some occasions
and lines(see post 34) or clustered dots on others i got no idea.
Perhaps Matt could explain that,although i'm not sure
if i could understand it.

[Mr_Lamppost]

I am having a quick look at using the Rotate Vector, not sure how this works yet 

The blue dots look to be a manifestation of a long standing GI bug.  This is a known issue, more commonly found as red or purple(Magenta) areas.  The last update was a huge improvement but the problem has not gone away all together.

The blue dots are easily produced with a dense atmosphere and bright light source. 

It May kill render time but try higher quality and Atmosphere Sample settings.  You may just get high quality Blue Dots but must be worth a try.   

[j meyer]

As for the rotate vector, if you find something let me know,please.

And for the blue dots see attachments.

[j meyer]

Hi again,
made some quick tests with Mr.Lampposts file posted
here http://forums.planetside.co.uk/index.php?topic=3093.0
Found nothing really new as for the coloring in the
meantime,but maybe someone else can contribute something,
hopefully.With the aforementioned file you can get pretty
cool results,but also pretty much unwanted artifacts.
Some examples attached.

[Mr_Lamppost]

Nice experiments

I was also getting strange artefacts, I assume that some of the less conventional ways of defining cloud density are not properly clamped. 

have an animation on the go just now that uses Rotate Vector t o vary the cloud density.   

[j meyer]

I'm still trying to get clear picture of the whole cloud thing
in my mind,but it will take some more time and experimenting
i guess.
Some other artefacts seem to be connected to lighting,like
the dark line that shows up and moves when you move the
sun.A shadow thing maybe.

Good luck with your animation.

[j meyer]

This one consists of three 2D cloud layers furnished with the power
scalar/build vector setup mentioned earlier in this thread.
cloud altitude: 1e+008
                    9.4e+007
                    9e+007
           depth:50
     sharpness:0.1
        density:0.1
wispiness and softness:0.5
all other values at default
Then there is 1 power fractal connected to the color and luminosity
inputs of a surface layer that's adjusted by 2 color adjusts and hooked
up to the background object.
Now combine that with a starfield and you're ready to boldly go where
no onehas gone before.

[j meyer]

And the same with the clouds set to 3D.

[Virex]

Ion Storm anyone?

Anyhow, i think those blue spots are disfiguring it a bit. Try what happens if you do a vector multiplication with a vector set to 1,1,0.1, or maybe even 1,1,0? That way we'll quickly see if they're created by the vector, or that it's something else

[j meyer]

In case you're refering to the last 2, the blue spots in these
are provided by the power fractal connected to the background
and i like them.
As for the vector multiplication feel free to contribute that your-
self,please.

[Virex]

I would if I'd have consistent acces to TG2. But currently, another scene is eating up the litle time I've got to use it. I hope I'll get more time in the weekend.

[j meyer]

That's ok,we don't have a deadline.

[Mr_Lamppost]

Sorry this has taken so long, A couple of months back I re-built my PC and didn't have anything installed to compile the animation frames into an AVI.   

All I am doing is taking the Density Fractal of the cloud layer and passing it through a Rotate X Vector.  The amount of rotation animates from 0 to 360.

http://www.ironworld.org/mr_lamppost/TG2/anim/Rotate_X_Vector.avi

I forgot to turn of GI and am not going to render it again seeing as you can still see what is going on


Here is a nebula test I did in an attempt to get a volumetric look, not all that successful   The colour in the nebula comes from vector rotations; there is no sun just a light source placed near to the nebula.  I had to give it a strength of around 1.0+e17

[Virex]

Cool render. It realy shows what you can do with these things.

[j meyer]

Cool animation! 8)Gotta play with the rotate vector some more.
Tried something with a lightsource also,but got no result with
1e+009 or so and stopped back then.
I would like to get an effect reminiscent of a string theory model
kind of thing,been not successful either,as of yet that is.