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From: Thomas de Groot
Subject: The Ringworld revisited (day and night)
Date: 13 Jun 2010 07:58:10
Message: <4c14c7d2@news.povray.org>
Following up on the thread "spinner" space colony, and taking up againthe 
work of 2005, here are two views of Larry Niven's Ringworld, scale 1:1, 
during day and during night. Like Niven tells that, during the day, the 
"Arch of Heaven" is much less visible than during the night. This is indeed 
confirmed by my visit there ;-)

The ground surface is featureless because of the huge scale. A local 
landscape should be superposed on it. That will be the next todo.

Thomas


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 13 Jun 2010 10:33:16
Message: <4c14ec2c$1@news.povray.org>
On 13/06/2010 12:58 PM, Thomas de Groot wrote:
> The ground surface is featureless because of the huge scale. A local
> landscape should be superposed on it. That will be the next todo.
>

Go for it :-)

-- 

Best Regards,
	Stephen


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 14 Jun 2010 05:15:01
Message: <web.4c15f2db325a7df36dd25f0b0@news.povray.org>
Looking good. I've been playing with my version too, I'll post when I have
something decent!


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 14 Jun 2010 08:04:06
Message: <4c161ab6$1@news.povray.org>
On 14/06/2010 10:14 AM, Bill Pragnell wrote:
> Looking good. I've been playing with my version too, I'll post when I have
> something decent!
>
>

Please do. :-D

-- 

Best Regards,
	Stephen


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From: Lightbeam
Subject: Re: The Ringworld revisited (day and night)
Date: 14 Jun 2010 14:30:51
Message: <4c16755b$1@news.povray.org>
Spin ? ;-)

Le 13/06/2010 13:58, Thomas de Groot a écrit :
> Following up on the thread "spinner" space colony, and taking up againthe
> work of 2005, here are two views of Larry Niven's Ringworld, scale 1:1,
> during day and during night. Like Niven tells that, during the day, the
> "Arch of Heaven" is much less visible than during the night. This is indeed
> confirmed by my visit there ;-)
>
> The ground surface is featureless because of the huge scale. A local
> landscape should be superposed on it. That will be the next todo.
>
> Thomas
>
>


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 15 Jun 2010 04:02:54
Message: <4c1733ae$1@news.povray.org>
"Lightbeam" <st.### [at] freefr> schreef in bericht 
news:4c16755b$1@news.povray.org...
> Spin ? ;-)

Yeah... I am not much of an animator, but making the Shadow Squares spin 
gives an interesting effect over the Ring, including the penumbra.

Something I had not really realized before is that the lighting of the 
landscape is extremely flat due to the Sun being at the vertical of the 
landscape. This does not make for very breathtaking vistas I am afraid...

Thomas


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 15 Jun 2010 04:30:01
Message: <web.4c17392c325a7df36dd25f0b0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> Something I had not really realized before is that the lighting of the
> landscape is extremely flat due to the Sun being at the vertical of the
> landscape. This does not make for very breathtaking vistas I am afraid...

The landscape is described as having the same variation as the surface of any
planet - indeed, the maps of the other worlds from known space are all there,
Mars being a plateau raised by some km to simulate the thin atmosphere. The most
interesting lighting conditions will probably be evening/night-time - the
brightest archlight should be cast from the few next/previous days to
spinward/antispinward.

To be honest, the best way of doing this is probably to pick your position
across the ring width, render a spherical camera view with nothing on the ring
floor, then just use it on a sky sphere/light probe for the landscape scene of
your choice. Not as satisfying, unfortunately... :(


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 15 Jun 2010 07:33:33
Message: <4c17650d$1@news.povray.org>
"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4c17392c325a7df36dd25f0b0@news.povray.org...
> The landscape is described as having the same variation as the surface of 
> any
> planet - indeed, the maps of the other worlds from known space are all 
> there,
> Mars being a plateau raised by some km to simulate the thin atmosphere. 
> The most
> interesting lighting conditions will probably be evening/night-time - the
> brightest archlight should be cast from the few next/previous days to
> spinward/antispinward.

The landscapes are not an issue indeed, it is the full daylight lighting 
which is *uninteresting* in itself. Shadows from trees should become 
important items for giving more contrast to the relief.
You are right, interesting effects should be obtained from twilight periods. 
This is something to investigate further I think.

>
> To be honest, the best way of doing this is probably to pick your position
> across the ring width, render a spherical camera view with nothing on the 
> ring
> floor, then just use it on a sky sphere/light probe for the landscape 
> scene of
> your choice. Not as satisfying, unfortunately... :(

This is indeed an idea to follow up. I forgot for the moment the possibility 
of a HDRI light probe and shall try that out, although - as you say - this 
is somewhat less satisfying.

Thomas


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 15 Jun 2010 22:23:23
Message: <4c18359b$1@news.povray.org>
On 6/15/2010 4:02 AM, Thomas de Groot wrote:
> "Lightbeam"<st.### [at] freefr>  schreef in bericht
> news:4c16755b$1@news.povray.org...
>> Spin ? ;-)
>
> Yeah... I am not much of an animator, but making the Shadow Squares spin
> gives an interesting effect over the Ring, including the penumbra.
>
> Something I had not really realized before is that the lighting of the
> landscape is extremely flat due to the Sun being at the vertical of the
> landscape. This does not make for very breathtaking vistas I am afraid...
>
> Thomas
>
>

I know you're trying to stay true to the book, but you could replace the 
shadow "squares" with a lattice of some sort that progressively blocks 
more or less light in a gradual manner.

-- 
http://isometricland.com


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 16 Jun 2010 03:18:17
Message: <4c187ab9@news.povray.org>
"SharkD" <pos### [at] gmailcom> schreef in bericht 
news:4c18359b$1@news.povray.org...
>>
>
> I know you're trying to stay true to the book, but you could replace the 
> shadow "squares" with a lattice of some sort that progressively blocks 
> more or less light in a gradual manner.
>

No, that is not the problem, and in fact the area_light sun already takes 
care of the penumbrae cast by the shadow squares like you can see on the 
images. The point is that the sun is always at the vertical to the ring 
surface, like if you were in the tropics on Earth, and permanently at noon. 
This results in very little shadow effects on the landscape, and is why by 
the way, photography at noon is not recommended in general. So *real* 
shadows will be cast by overhangs, artificial objects, and clouds.

Thomas


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 08:16:48
Message: <4c1a1230$1@news.povray.org>
On 6/16/2010 3:18 AM, Thomas de Groot wrote:
> "SharkD"<pos### [at] gmailcom>  schreef in bericht
> news:4c18359b$1@news.povray.org...
>>>
>>
>> I know you're trying to stay true to the book, but you could replace the
>> shadow "squares" with a lattice of some sort that progressively blocks
>> more or less light in a gradual manner.
>>
>
> No, that is not the problem, and in fact the area_light sun already takes
> care of the penumbrae cast by the shadow squares like you can see on the
> images. The point is that the sun is always at the vertical to the ring
> surface, like if you were in the tropics on Earth, and permanently at noon.
> This results in very little shadow effects on the landscape, and is why by
> the way, photography at noon is not recommended in general. So *real*
> shadows will be cast by overhangs, artificial objects, and clouds.
>
> Thomas
>
>

Yes, I'm having the same problem with my spinner colony. Maybe you could 
add some sort of lens surrounding the sun that makes it appear as if it 
changes position?

-- 
http://isometricland.com


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 08:40:00
Message: <web.4c1a1772325a7df36dd25f0b0@news.povray.org>
SharkD <pos### [at] gmailcom> wrote:
> Yes, I'm having the same problem with my spinner colony. Maybe you could
> add some sort of lens surrounding the sun that makes it appear as if it
> changes position?

Your habitat has windows on the endcaps, doesn't it? What about a view with the
axial sun-tube switched off, but sunlight coming into the cylinder from outside?
With decent radiosity settings this might look very interesting.


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 11:37:10
Message: <4c1a4126$1@news.povray.org>
On 6/17/2010 8:39 AM, Bill Pragnell wrote:
> Your habitat has windows on the endcaps, doesn't it? What about a view with the
> axial sun-tube switched off, but sunlight coming into the cylinder from outside?
> With decent radiosity settings this might look very interesting.
>
>

Or both. Not sure yet if I want the colony in a solar or planetary orbit 
though.

-- 
http://isometricland.com


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 11:52:09
Message: <4c1a44a9$1@news.povray.org>
On 6/17/2010 11:37 AM, SharkD wrote:
> Or both. Not sure yet if I want the colony in a solar or planetary orbit
> though.
>

Or at a Lagrange point, LOL!

-- 
http://isometricland.com


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 12:00:00
Message: <web.4c1a45ee325a7df36dd25f0b0@news.povray.org>
SharkD <pos### [at] gmailcom> wrote:
> On 6/17/2010 8:39 AM, Bill Pragnell wrote:
> > Your habitat has windows on the endcaps, doesn't it? What about a view with the
> > axial sun-tube switched off, but sunlight coming into the cylinder from outside?
> > With decent radiosity settings this might look very interesting.
>
> Or both. Not sure yet if I want the colony in a solar or planetary orbit
> though.

You'd want a solar or gas-giant orbit if possible - photovoltaic power
from a close solar orbit, or put out conductor spines to sweep the gas-giants
magnetosphere for inductive power. I vote gas-giant, the view's better and you
don't need to worry about solar weather or heat disposal.
</geekery>


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 12:47:10
Message: <4c1a518e$1@news.povray.org>
On 6/17/2010 11:59 AM, Bill Pragnell wrote:
> You'd want a solar or gas-giant orbit if possible - photovoltaic power
> from a close solar orbit, or put out conductor spines to sweep the gas-giants
> magnetosphere for inductive power. I vote gas-giant, the view's better and you
> don't need to worry about solar weather or heat disposal.
> </geekery>


What are "conductor spines", and what might they look like?

-- 
http://isometricland.com


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 17 Jun 2010 14:55:00
Message: <web.4c1a6e9c325a7df34f28787e0@news.povray.org>
SharkD <pos### [at] gmailcom> wrote:
> On 6/17/2010 11:59 AM, Bill Pragnell wrote:
> > You'd want a solar or gas-giant orbit if possible - photovoltaic power
> > from a close solar orbit, or put out conductor spines to sweep the gas-giants
> > magnetosphere for inductive power. I vote gas-giant, the view's better and you
> > don't need to worry about solar weather or heat disposal.
> > </geekery>
>
> What are "conductor spines", and what might they look like?

Just a description, not any particular technical term. The idea is to hang long
wires out radially from your rotating habitat such that they sweep through the
planet's magnetic field and induce electrical currents that can be used as a
power source, just like a really big dynamo.


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 18 Jun 2010 04:34:44
Message: <4c1b2fa4@news.povray.org>
After some tweaking of the Ringworld and playing with landscape generation, 
here is a first test.

1) I wrote the whole Ringworld basics, including Sun and Shadow Squares into 
a macro to make it easy to add in any scene.

2) An interesting experiment is to make the area_light of the Sun a tiny bit 
larger than the Shadow Squares. It results a bit like the corona 
illuminating diffusely the night skies along the ring. THis is not the case 
in the present image.

3) For the landscape I made use of John VanSickle's height_field patchwork 
macro. It is a bit difficult to control, especially in the areas nearest the 
camera (see image) but it results in interesting landscapes.

4) The dark shape to the right is not an artefact but the Rim Wall.

5) I am testing ways of making local clouds but not with anything really 
useful till now.

Thomas


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 18 Jun 2010 04:50:00
Message: <web.4c1b3226325a7df36dd25f0b0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> After some tweaking of the Ringworld and playing with landscape generation,
> here is a first test.

Looks nice! I really need to set aside some time to play with this - another
ringworld-off, methinks.

Don't forget that the rim wall in the book was described as a continuous,
impossibly high mountain range, not a literal wall - although I realise this
will be much harder to model...!

Bill


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 18 Jun 2010 05:10:49
Message: <4c1b3819@news.povray.org>
"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4c1b3226325a7df36dd25f0b0@news.povray.org...
> Looks nice! I really need to set aside some time to play with this - 
> another
> ringworld-off, methinks.

...This is a rapid test with some clouds and their effects on the landscape.

>
> Don't forget that the rim wall in the book was described as a continuous,
> impossibly high mountain range, not a literal wall - although I realise 
> this
> will be much harder to model...!

Yes, that is more difficult, but I think that can be overcome by a local 
range locally superposed over/against the basic wall, which is a 1000 miles 
high in this image. I have to think about that issue...

Thomas


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 18 Jun 2010 07:14:46
Message: <4c1b5526$1@news.povray.org>
The Day/Night banding is good. Are the mountains not a bit high or is 
that a mountainous part of the landscape?

-- 

Best Regards,
	Stephen


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 18 Jun 2010 07:30:30
Message: <4c1b58d6$1@news.povray.org>
"Stephen" <mca### [at] aolDOTcom> schreef in bericht 
news:4c1b5526$1@news.povray.org...
> The Day/Night banding is good. Are the mountains not a bit high or is that 
> a mountainous part of the landscape?

Yes, the banding is "better" because no light is leaking around the Shadow 
Squares. As soon as some leaking occurs, there is some diffuse lighting of 
the night areas, which may lead to interesting effects. Quite inadvertently 
I came across that phenomenon.

The "mountains" are fairly high although scale is difficult to judge here. I 
shall add simple trees to give an idea.

Thomas


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 19 Jun 2010 12:28:41
Message: <4c1cf039$1@news.povray.org>
On 6/18/2010 4:45 AM, Bill Pragnell wrote:
> Looks nice! I really need to set aside some time to play with this - another
> ringworld-off, methinks.
>
> Don't forget that the rim wall in the book was described as a continuous,
> impossibly high mountain range, not a literal wall - although I realise this
> will be much harder to model...!
>
> Bill
>

Are you sure? I thought it was just a flat wall.

-- 
http://isometricland.com


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 20 Jun 2010 03:38:48
Message: <4c1dc588$1@news.povray.org>
"SharkD" <pos### [at] gmailcom> schreef in bericht 
news:4c1cf039$1@news.povray.org...
>
> Are you sure? I thought it was just a flat wall.
>

I should look this up of course, but I seem to remember indeed that the Rim 
Wall was carved into mountain shapes. In the later books, spill mountains 
were added too for the necessary feeding of rivers.

Thomas


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 20 Jun 2010 05:17:30
Message: <4c1ddcaa$1@news.povray.org>
On 6/20/2010 3:38 AM, Thomas de Groot wrote:
> I should look this up of course, but I seem to remember indeed that the Rim
> Wall was carved into mountain shapes. In the later books, spill mountains
> were added too for the necessary feeding of rivers.
>
> Thomas
>
>

Must have missed that bit, thanks!

-- 
http://isometricland.com


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From: Christian Froeschlin
Subject: Re: The Ringworld revisited (day and night)
Date: 20 Jun 2010 19:23:08
Message: <4c1ea2dc$1@news.povray.org>
Thomas de Groot wrote:

> I should look this up of course, but I seem to remember indeed that the Rim 
> Wall was carved into mountain shapes. In the later books, spill mountains 
> were added too for the necessary feeding of rivers.

I think the rim itself was just a wall, non-withstanding that the
terrain was mostly shaped such that it was blocked of by mountains
(although the rim wall is much higher than the mountains).

Here's a nice viewpoint from the rim:

http://www.dennisantinori.com/RingworldRPG/14109.html

Allegedly 1600 km high? About 5 times the ISS orbital height ;)


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 03:56:46
Message: <4c1f1b3e@news.povray.org>
"Christian Froeschlin" <chr### [at] chrfrde> schreef in bericht 
news:4c1ea2dc$1@news.povray.org...
> I think the rim itself was just a wall, non-withstanding that the
> terrain was mostly shaped such that it was blocked of by mountains
> (although the rim wall is much higher than the mountains).

As I said, I should look this up. I think the inner wall face is 
sculpted/hidden behind mountain shapes. The transport system functions 
behind that fake landscape.

>
> Here's a nice viewpoint from the rim:
>
> http://www.dennisantinori.com/RingworldRPG/14109.html
>
> Allegedly 1600 km high? About 5 times the ISS orbital height ;)

In this image, the width of the wall seems much too narrow! And yes, it is 
1600 km high indeed.

Thomas


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 04:53:48
Message: <4c1f289c@news.povray.org>
Here is a view that I start to find acceptable. 50000 trees were planted. 
Rendered in 14 minutes.

macros and techniques used from: John VanSickle, Zeger Knaepen, Bill 
Pragnell, Kirk Andrews. My thanks, gentlemen! And Larry Niven for the 
concept of course! :-)

Thomas


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 05:25:01
Message: <web.4c1f2ed6325a7df36dd25f0b0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> Here is a view that I start to find acceptable. 50000 trees were planted.
> Rendered in 14 minutes.

Very nice. I love the way the wall looms over the regular foreground mountains.
Maybe a sheer wall is more dramatic than spill mountains. I anticipate future
iterations!


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 07:26:59
Message: <4c1f4c83$1@news.povray.org>
On 21/06/2010 10:20 AM, Bill Pragnell wrote:
> "Thomas de Groot"<tDOTdegroot@interDOTnlANOTHERDOTnet>  wrote:
>> Here is a view that I start to find acceptable. 50000 trees were planted.
>> Rendered in 14 minutes.
>
> Very nice. I love the way the wall looms over the regular foreground mountains.
> Maybe a sheer wall is more dramatic than spill mountains. I anticipate future
> iterations!
>
>
Is that the side wall? It looks a bit strange to me, hidden behind the 
mountains. If you could see it continuing just slightly above the 
mountain it might be more recognisable.

To which god does one pray to, to move mountains? ;-)

-- 

Best Regards,
	Stephen


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 08:15:00
Message: <web.4c1f5799325a7df36dd25f0b0@news.povray.org>
Stephen <mca### [at] aolDOTcom> wrote:
> Is that the side wall? It looks a bit strange to me, hidden behind the
> mountains. If you could see it continuing just slightly above the
> mountain it might be more recognisable.
>
> To which god does one pray to, to move mountains? ;-)

I believe the locals name one Louis Wu. :)


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From: Jörg 'Yadgar' Bleimann
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 08:19:08
Message: <4c1f58bc$1@news.povray.org>
High!

On 06/21/2010 10:53 AM, Thomas de Groot wrote:
> Here is a view that I start to find acceptable. 50000 trees were planted.
> Rendered in 14 minutes.

Impressive! Is the "local landscape" a simple heightfield or an isosurface?

See you in Khyberspace!

Yadgar

Now playing. Santa Fe (Deuter)


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 08:40:06
Message: <4c1f5da6$1@news.povray.org>
On 21/06/2010 1:14 PM, Bill Pragnell wrote:
> Stephen<mca### [at] aolDOTcom>  wrote:
>> Is that the side wall? It looks a bit strange to me, hidden behind the
>> mountains. If you could see it continuing just slightly above the
>> mountain it might be more recognisable.
>>
>> To which god does one pray to, to move mountains? ;-)
>
> I believe the locals name one Louis Wu. :)
>
>

LOL.

I've got Ringworld as a talking book. I must listen to it when driving 
to and from work.

-- 

Best Regards,
	Stephen


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 10:03:21
Message: <4c1f7129$1@news.povray.org>
"Jörg 'Yadgar' Bleimann" <yaz### [at] gmxde> schreef in bericht 
news:4c1f58bc$1@news.povray.org...
>
> Impressive! Is the "local landscape" a simple heightfield or an 
> isosurface?

Thank you indeed!

The local landscape is a patchwork macro of height_fields, thanks to John 
Van Sickle.

Thomas


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 10:11:19
Message: <4c1f7307$1@news.povray.org>
"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4c1f2ed6325a7df36dd25f0b0@news.povray.org...
> Very nice. I love the way the wall looms over the regular foreground 
> mountains.
> Maybe a sheer wall is more dramatic than spill mountains. I anticipate 
> future
> iterations!

Thanks Bill!

The Rim Wall being so high, it "naturally" tends to loom even from far away. 
We are standing here about 99% across the ring (calculated from the center). 
So the Ring Wall still is about 5000 miles from the camera!

I wonder if it would really be visible so well, due to atmospheric haze and 
such? I think that Larry Niven has not really considered the question... On 
the other hand, the top of the wall is virtually out of the atmosphere, and 
we may be able to see better a long way up than a long way away...

Thomas


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 10:15:35
Message: <4c1f7407@news.povray.org>
"Stephen" <mca### [at] aolDOTcom> schreef in bericht 
news:4c1f4c83$1@news.povray.org...
> Is that the side wall? It looks a bit strange to me, hidden behind the 
> mountains. If you could see it continuing just slightly above the mountain 
> it might be more recognisable.

The Rim Wall looms over the "local" landscape,, which is seen under an angle 
of 80 degrees to the Ringworld.


> To which god does one pray to, to move mountains? ;-)

As Bill said: Louis Wu is the proper god. I wouldn't trust Nessus. ;-)

Thomas


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 10:40:00
Message: <web.4c1f7974325a7df36dd25f0b0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> "Stephen" <mca### [at] aolDOTcom> schreef in bericht
> > To which god does one pray to, to move mountains? ;-)
>
> As Bill said: Louis Wu is the proper god. I wouldn't trust Nessus. ;-)

Well, the smart money would be on Nessus, but the locals never met him properly.
:)


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 10:59:19
Message: <4c1f7e47@news.povray.org>
...and a possible (mid)night view would be like this one. Render time is 35 
minutes, mainly due to the water.

Thomas


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From: Thomas de Groot
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 11:02:08
Message: <4c1f7ef0$1@news.povray.org>
"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.4c1f7974325a7df36dd25f0b0@news.povray.org...
> "Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
>> "Stephen" <mca### [at] aolDOTcom> schreef in bericht
>> > To which god does one pray to, to move mountains? ;-)
>>
>> As Bill said: Louis Wu is the proper god. I wouldn't trust Nessus. ;-)
>
> Well, the smart money would be on Nessus, but the locals never met him 
> properly.
> :)

Yes, he is the hidden one, if not the hindmost... ;-)

Thomas


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 11:10:01
Message: <web.4c1f8057325a7df36dd25f0b0@news.povray.org>
"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> ...and a possible (mid)night view would be like this one. Render time is 35
> minutes, mainly due to the water.

Now that really is nice... a bit of light bloom and more opaque clouds would
make it almost perfect.

One thing has just struck me - I don't think the top of the wall would be
properly visible, especially at night. Since the top sticks out of the
atmosphere by some 800-900 miles, it should probably be obscured by the sky in
the same way as the arch, only showing up where in full sunlight. I don't know
how to make that look believable :\


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 11:37:27
Message: <4c1f8737@news.povray.org>
On 21/06/2010 3:15 PM, Thomas de Groot wrote:
> "Stephen"<mca### [at] aolDOTcom>  schreef in bericht
> news:4c1f4c83$1@news.povray.org...
>> Is that the side wall? It looks a bit strange to me, hidden behind the
>> mountains. If you could see it continuing just slightly above the mountain
>> it might be more recognisable.
>
> The Rim Wall looms over the "local" landscape,, which is seen under an angle
> of 80 degrees to the Ringworld.
>

Yes but in your image it looks, to me, as if a part of the landscape is 
veering off to the right at an angle to the ring. I know it is just a 
matter of perspective an optical illusion really.

>> To which god does one pray to, to move mountains? ;-)
>
> As Bill said: Louis Wu is the proper god. I wouldn't trust Nessus. ;-)
>
I must re-read the series again, soon.



-- 

Best Regards,
	Stephen


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From: Darren New
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 12:13:16
Message: <4c1f8f9c$1@news.povray.org>
Thomas de Groot wrote:
> I should look this up of course, but I seem to remember indeed that the Rim 
> Wall was carved into mountain shapes. In the later books, spill mountains 
> were added too for the necessary feeding of rivers.

Indeed. ALtho one must wonder why.

-- 
Darren New, San Diego CA, USA (PST)
    Eiffel - The language that lets you specify exactly
    that the code does what you think it does, even if
    it doesn't do what you wanted.


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From: Darren New
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 12:16:18
Message: <4c1f9052$1@news.povray.org>
Stephen wrote:
> I must re-read the series again, soon.

Fans should be aware there's a whole new series out, covering what Nessus 
was doing the whole time he wasn't obvious. Basically, Known Space as told 
from the puppeteer's point of view.  Very, very fun.

-- 
Darren New, San Diego CA, USA (PST)
    Eiffel - The language that lets you specify exactly
    that the code does what you think it does, even if
    it doesn't do what you wanted.


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 13:02:34
Message: <4c1f9b2a$1@news.povray.org>
On 21/06/2010 5:16 PM, Darren New wrote:
> Stephen wrote:
>> I must re-read the series again, soon.
>
> Fans should be aware there's a whole new series out, covering what
> Nessus was doing the whole time he wasn't obvious. Basically, Known
> Space as told from the puppeteer's point of view. Very, very fun.
>

I didn't know. What is it called?

-- 

Best Regards,
	Stephen


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 13:25:36
Message: <4c1fa090$1@news.povray.org>
On 6/21/2010 12:16 PM, Darren New wrote:
> Stephen wrote:
>> I must re-read the series again, soon.
>
> Fans should be aware there's a whole new series out, covering what
> Nessus was doing the whole time he wasn't obvious. Basically, Known
> Space as told from the puppeteer's point of view. Very, very fun.
>

IIRC, there's also a book that goes into the technical details behind 
the Ringworld series based on conversations by fans over the years on 
various newsgroups (not sure which ones though).

-- 
http://isometricland.com


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 13:29:25
Message: <4c1fa175@news.povray.org>
On 6/21/2010 3:56 AM, Thomas de Groot wrote:
> As I said, I should look this up. I think the inner wall face is
> sculpted/hidden behind mountain shapes. The transport system functions
> behind that fake landscape.

The book mentions how the bottom (or outside edge) of the ring is shaped 
like a cake mold due to the sculpting of the mountains, but nothing 
about the side walls.

-- 
http://isometricland.com


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From: SharkD
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 13:29:49
Message: <4c1fa18d$1@news.povray.org>
On 6/21/2010 1:25 PM, SharkD wrote:
> IIRC, there's also a book that goes into the technical details behind
> the Ringworld series based on conversations by fans over the years on
> various newsgroups (not sure which ones though).
>

He talks about it in the introduction to Book 4.


-- 
http://isometricland.com


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From: Darren New
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 15:51:30
Message: <4c1fc2c2$1@news.povray.org>
Stephen wrote:
> I didn't know. What is it called?

I was hoping I wouldn't have to dig it up... ;-)

The volume I have is called "Juggler of Worlds" by Niven and Edward Lerner. 
The intro/etc implies there's an entire series, but I haven't tracked it 
down yet. Maybe "Fleet of Worlds" according to the cover notes?

-- 
Darren New, San Diego CA, USA (PST)
    Eiffel - The language that lets you specify exactly
    that the code does what you think it does, even if
    it doesn't do what you wanted.


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From: Bill Pragnell
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 16:20:01
Message: <web.4c1fc8aa325a7df34f28787e0@news.povray.org>
Darren New <dne### [at] sanrrcom> wrote:
> Stephen wrote:
> > I didn't know. What is it called?
>
> I was hoping I wouldn't have to dig it up... ;-)
>
> The volume I have is called "Juggler of Worlds" by Niven and Edward Lerner.
> The intro/etc implies there's an entire series, but I haven't tracked it
> down yet. Maybe "Fleet of Worlds" according to the cover notes?

Wikipedia says "Fleet of Worlds", "Juggler of Worlds" and "Destroyer of Worlds".
I shall have to hunt these down, they sound interesting.

(I only read "Ringworld's Children" quite recently - it was much better than
Throne, I thought it had the same sort of feel as Engineers).


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From: Stephen
Subject: Re: The Ringworld revisited (day and night)
Date: 21 Jun 2010 16:26:20
Message: <4c1fcaec$1@news.povray.org>
On 21/06/2010 9:16 PM, Bill Pragnell wrote:
> (I only read "Ringworld's Children" quite recently - it was much better than
> Throne, I thought it had the same sort of feel as Engineers).
>

That's a plus I've not read "Ringworld's Children", yet.

-- 

Best Regards,
	Stephen


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