|
 |
On 8/8/2018 9:49 PM, Mike Horvath wrote:
> Can anyone recommend a nice star field? The texture that comes with
> POV-Ray is not very good.
>
> This one is okay:
>
> http://www.hoboes.com/NetLife/POV_Simple/5/2/
>
> Thanks.
>
>
> Mike
I also tried some public domain bitmaps, but my scene is under high
magnification, which causes the background to appear extremely pixelated.
Mike
Post a reply to this message
|
|
|
|
Mike Horvath <mik### [at] gmail com> wrote:
> Can anyone recommend a nice star field? The texture that comes with
> POV-Ray is not very good.
>
You might want to check out Chris Colfax's old "Galaxy.inc" file; it can
apparently make 'just' starfields, with lots of settings. (I haven't used it
before-- in fact, I just downloaded it!)
Here are two sites where it's currently available...
http://objects.povworld.org/cat/Space/
and
http://www.oocities.org/ccolefax/galaxy.html
And there's always the brute-force method instead: lots of white spheres placed
way off in the distance. I would imagine that this simpler method might be less
memory-intensive than a pre-made starfield *image* (which might have to be quite
large in picel dimensions to get the proper detail, to avoid pixelation.)
Post a reply to this message
|
|
|
|
Le 18-08-10 à 15:17, Kenneth a écrit :
> Mike Horvath <mik### [at] gmailcom> wrote:
>>
>> This one is okay:
>>
>> http://www.hoboes.com/NetLife/POV_Simple/5/2/
>>
>
> Interesting; I wasn't aware of this bozo-pattern technique. Thanks.
>
>
bozo{colour_map{[0 rgb 2][0.2 rgb 0]}scale 0.006}
Looks like it rely on sub-pixel artifacts, just like the ones from the
distribution that use granite. It's just that it use a different base
pattern.
Just like those from skys.inc, it suffer the from same problem : Any
movement or rotation, of the camera will cause the stars to completely
change.
This make micro-pattern based skys unsuitable for animations.
This apply to granite, bozo(bumps, spotted), agate, crackle, cells, ...
based patterns.
With those, you can have coloured stars.
One possible option is :
bozo{colour_map
{[0 rgb 2]
[0.025 rgb<2,0,0>]
[0.0375 rgb 0]
[0.05 rgb<0,0,2>]
[0.075 rgb 2]
[0.2 rgb 0]}
scale 0.006
}
The skys from galaxy.inc don't suffer from that problem, but are more
memory intensive, take more time to parse and are somewhat slower to render.
Alain
Post a reply to this message
|
|
|
|
try this:
sky_sphere {
pigment {
pigment_pattern {granite scale 3}
pigment_map {
[0
crackle form <1,1,0>
scale .0035
color_map {
[.35 rgb .25]
[.55 rgb 0]
}
]
[1 rgb 0]
}
poly_wave .25
}
}
it's old code, haven't tested it with any recent version of POV-Ray, but
I suppose it'll still work.
cu!
--
ZK
Post a reply to this message
|
|
