> High!
> 
> Another experiment with emitting media, now trying out the crackle
> pattern... but the scene looks like the media covers the faces of the
> object (a box extending from <-5, -5, 0> to <5, 5, 20>, with the camera
> looking into it from <0, 0, -2>) like a texture rather than filling it!
> Is this a special feature of the crackle pattern? When I tried the same
> pattern with a sphere (see second picture), it appeared distorted like
> it was projected onto the sphere's surface!
> 
> See you in www.khyberspace.de!
> 
> Yadgar
> 
> Now playing: Walk Like An Egyptian (Bangles)
> 
> ------------------------------------------------------------------------
> 
> 
> ------------------------------------------------------------------------
> 

What are your media settings?
If you only have the default of 3 samples, you'll miss almost all parts 
that should be visible. If you look closely, there are some floating 
points as well as several bright spots in places where you don't have a 
front and back lines crossing each others. Those are places where the 
sampling did hit an inside strand.

In the case of the sphere, most of what you see are the internal 
details, but you need more samples that what you are using. The depth of 
the sphere is obviously smaller than that of the box. Each straight line 
is part of the internal structure.

Try adding to your media something like:
samples 10
do a test render. You should get some internal structure.
Next, increase samples by +10 until you get a reasonable result.
There will be a point where adding more samples will no longer reveal 
more details. When you reatch that point, stop adding more samples.

I did something similar in the past, and I got good results with samples 
30. As your container is deeper than in my experiments by a factos of 
about 3 to 4, I suggest that you use something like "samples 90" to 
"samples 120"


insane... Insane can be something like 1000 or more.

As you seems to use emissive media, samples 150 will not cause excessive 
rendering time.



Alain

Post a reply to this message