I'd try the image_map route first, personally, because if that's 
satisfactory it'll be easy for you to churn out many many more very 
quickly without any hassle.  And it renders fast.

Post a reply to this message

Wasn't it Mike Williams who wrote:
>
>If none of the bubbles touch the surface of the box, then I think you
>can you can get the refractions correct by making a union of the bubbles
>and giving them a material{} that's the same as the box except that the
>interior ior of the bubbles is set to 1.0

I've now done a quick write up of this method and added it to my holes
tutorial.

<http://www.econym.demon.co.uk/holetut/holes3.htm>

The speed turns out to be quite good, but the bubbles tend to cast
unrealistic white anti-shadows, so I suggest using no-shadow on them.

-- 
Mike Williams
Gentleman of Leisure

Post a reply to this message

Mike Williams <nos### [at] econymdemoncouk> wrote:
> The speed turns out to be quite good, but the bubbles tend to cast
> unrealistic white anti-shadows, so I suggest using no-shadow on them.

  Perhaps you should try it with photons to see if there's any considerable
difference? Perhaps as an addition to that page?

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -

Post a reply to this message