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Been experimenting with something else again, inspired this time by a scene
in the novel Nova, by Samuel Delany.
This megapov image is nothing special, but it highlights a couple of things.
First of all, there is - again - the problem of scale. The real planetary
measurements have been used for this image. However, because of the z-buffer
limit, I had to scale down the kilometer values by a factor 3.
Second, If I want to build something on Triton, I want them to be
metre-scaled. So the camera position for instance is scaled down by a factor
6. Which generates the known problem of ultra-fine resolution, already
discussed here during the Ringworld experiments by Bill Pragnell, myself
(and some others?) last year. I rendered this scene also in version 3.7 and,
interestingly, the surface of Triton disappeared!!! Rendered in the adapted
3.6.0 version (see the Ringworld experiments) was not better than this
image.
So, what do we see here?
- Neptune is visible as it would be from the surface of Triton. Its axial
tilt in relation to the ecliptic is provided.
- The rings of Neptune are there. However, their width has been grossly
exagerated. In reality they are probably not or hardly visible.
- The small dot to the right of the planet is the moon Proteus. It looks
like this is probably the only moon really visible from Triton, the others
being too small or to far away to appear in the sky.
- The red cone is a placeholder, traced upon the surface of Triton. It casts
no shadow, probably because of the resolution limit.
Conclusion: If I want to create a scene, I shall probably fake reality by
scaling a sphere to the apparent size of Neptune, within a business-as-usual
POV-Ray scene. But at least, I shall know that the apparent size is
correct!!
Comments are of course more than welcome!!
Thomas
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Attachments:
Download 'NeptuneFromTriton.jpg' (10 KB)
Preview of image 'NeptuneFromTriton.jpg'
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PS I forgot to say that the black band at the base of the image is an
artifact from the scale resolution.
Thomas
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"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> Been experimenting with something else again, inspired this time by a scene
> in the novel Nova, by Samuel Delany.
depiction of a sensory-syrynx :-) or even Dhalgren <g>
[snip]
> Conclusion: If I want to create a scene, I shall probably fake reality by
> scaling a sphere to the apparent size of Neptune, within a business-as-usual
> POV-Ray scene. But at least, I shall know that the apparent size is
> correct!!
things SF, artistic licence must be used.
Stephen
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"Stephen" <mcavoys_AT_aolDOT.com> schreef in bericht
news:web.45802ec567574c2cf1cb1e660@news.povray.org...
>
> Well Thomas you do have good taste in SF. I'm looking forward to your
> depiction of a sensory-syrynx :-) or even Dhalgren <g>
> [snip]
>
Thank you Stephen! I am currently re-reading Delany's novels (Babel-17,
Jewels of Aptor, Einstein Intersection, Fall of the Towers, Dhalgren, Nova),
at the same time as I am (again) reading Brian Aldiss.
The syrynx is indeed on my wishlist and I have a couple of ideas about it.
Delany's description is sketchy, but that leaves enough latitude to
interpretation. The apparent mixture of different instruments (sitar,
guitar, theremin, harp...) is very exciting.
>
> The problem with RL is, it doesn't live up to the imagination. In most
> things SF, artistic licence must be used.
>
Well, both views are correct, I think. RL often doesn't live up to
imagination when you remember the revelation of the first photographs of
Jupiter's moons for instance, or the first really close-up photographs of
Mars. But happily, we are still entitled to artistic licence indeed!!
However, I think that, unconsciously, I would like to re-create RL in
POV-Ray!! :-)
Thomas
Post a reply to this message
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"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> "Stephen" <mcavoys_AT_aolDOT.com> schreef in bericht
> news:web.45802ec567574c2cf1cb1e660@news.povray.org...
> >
> > Well Thomas you do have good taste in SF. I'm looking forward to your
> > depiction of a sensory-syrynx :-) or even Dhalgren <g>
> > [snip]
> >
> Thank you Stephen! I am currently re-reading Delany's novels (Babel-17,
> Jewels of Aptor, Einstein Intersection, Fall of the Towers, Dhalgren, Nova),
> at the same time as I am (again) reading Brian Aldiss.
Cyber punk before it was thought of :-) I must find copies of these books
and reread them. I googled him yesterday and he looks really old in the
image below. His hair is almost as white as mine :-)
http://www.blackbird.vcu.edu/v2n2/features/delaney_s_030104/delaney_s.htm
> The syrynx is indeed on my wishlist and I have a couple of ideas about it.
> Delany's description is sketchy, but that leaves enough latitude to
> interpretation. The apparent mixture of different instruments (sitar,
> guitar, theremin, harp...) is very exciting.
> >
> > The problem with RL is, it doesn't live up to the imagination. In most
> > things SF, artistic licence must be used.
> >
> Well, both views are correct, I think. RL often doesn't live up to
> imagination when you remember the revelation of the first photographs of
> Jupiter's moons for instance, or the first really close-up photographs of
> Mars. But happily, we are still entitled to artistic licence indeed!!
> However, I think that, unconsciously, I would like to re-create RL in
> POV-Ray!! :-)
Best of British, mate!
Stephen
Post a reply to this message
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> Well, both views are correct, I think. RL often doesn't live up to
> imagination when you remember the revelation of the first photographs of
> Jupiter's moons for instance, or the first really close-up photographs of
> Mars. But happily, we are still entitled to artistic licence indeed!!
> However, I think that, unconsciously, I would like to re-create RL in
> POV-Ray!! :-)
I think cheating's OK in this sort of case. If the end result is
indistinguishable from the rigorous version, what the hell. Planets in
skies etc look like they're painted on the inside of a dome anyway. (hmm,
sounds familiar...)
With the Ringworld, the issue was that the structure itself was visible at
all distances, and so couldn't be faked realistically. And, remember what I
did to give it an atmosphere... :)
Bill
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"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht
news:web.45813fec67574c2c731f01d10@news.povray.org...
>> Well, both views are correct, I think. RL often doesn't live up to
>> imagination when you remember the revelation of the first photographs of
>> Jupiter's moons for instance, or the first really close-up photographs of
>> Mars.....
I typed the contrary of what I wanted to say here, but you certainly
understood! I wanted to say: 'Imagination often doesn't live up to RL'
> I think cheating's OK in this sort of case. If the end result is
> indistinguishable from the rigorous version, what the hell. Planets in
> skies etc look like they're painted on the inside of a dome anyway. (hmm,
> sounds familiar...)
Yes, I agree, and in fact we do that all/most of the times... I was curious
however to try this and to get proportions right.
> With the Ringworld, the issue was that the structure itself was visible at
> all distances, and so couldn't be faked realistically. And, remember what
> I
> did to give it an atmosphere... :)
Yes, the problem is a bit different, but basically the scale issue is
apparent here too. And yes, that atmosphere has been used again here for
Triton. I shall tweak it more of course.
Thomas
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"Stephen" <mcavoys_AT_aolDOT.com> schreef in bericht
news:web.4581254b67574c2cf1cb1e660@news.povray.org...
> Cyber punk before it was thought of :-) I must find copies of these books
> and reread them. I googled him yesterday and he looks really old in the
> image below. His hair is almost as white as mine :-)
> http://www.blackbird.vcu.edu/v2n2/features/delaney_s_030104/delaney_s.htm
Well, he was born in 1942, if I am correct. In a couple of years, I may
resemble him: almost as white (less than you obviously :-) ). Only my beard
is shorter...
>> The syrynx is indeed on my wishlist and I have a couple of ideas about
>> it.
>> Delany's description is sketchy, but that leaves enough latitude to
>> interpretation. The apparent mixture of different instruments (sitar,
>> guitar, theremin, harp...) is very exciting.
>
> That's it, Thomas go for the easy targets :-) I'd like to see the results.
We'll see... However, no easy targets, sir! That will be through crooked
little tunnels (all alike)... Now, let's see what *that* reminds you of!!!!
:-)
>> ....However, I think that, unconsciously, I would like to re-create RL in
>> POV-Ray!! :-)
>
> Best of British, mate!
LOL
Thomas
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"Bill Pragnell" <bil### [at] hotmailcom> wrote:
> > Well, both views are correct, I think. RL often doesn't live up to
> > imagination when you remember the revelation of the first photographs of
> > Jupiter's moons for instance, or the first really close-up photographs of
> > Mars. But happily, we are still entitled to artistic licence indeed!!
> > However, I think that, unconsciously, I would like to re-create RL in
> > POV-Ray!! :-)
>
> I think cheating's OK in this sort of case. If the end result is
> indistinguishable from the rigorous version,
is the same apparent size?
underwhelming as seeing a pinprick and knowing it is a moon.
>what the hell. Planets in
> skies etc look like they're painted on the inside of a dome anyway. (hmm,
> sounds familiar...)
> With the Ringworld, the issue was that the structure itself was visible at
> all distances, and so couldn't be faked realistically. And, remember what I
> did to give it an atmosphere... :)
>
Give a link please, Bill. Old age has withered my memory
Stephen
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"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> Well, he was born in 1942, if I am correct. In a couple of years, I may
> resemble him: almost as white (less than you obviously :-) ). Only my beard
> is shorter...
Soon to get his bus pass:-)
> We'll see... However, no easy targets, sir! That will be through crooked
> little tunnels (all alike)... Now, let's see what *that* reminds you of!!!!
> :-)
wasted any work time playing it. It was before my time. Computers are only
used for serious work.
I give in, what? :-)
Stephen
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