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30 Jul 2024 12:31:52 EDT (-0400)
  John Varley’s_Gaea (Message 1 to 5 of 5)  
From: Stephen
Subject: John Varley’s_Gaea
Date: 16 Jan 2012 15:01:04
Message: <4f148200@news.povray.org>

an idea to render it. To begin with an exterior scene.
Thanks to Lars R who reminded me about super-ellipsoids.

-- 
Regards
     Stephen


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From: Tail Kinker
Subject: Re: John Varley’s_Gaea
Date: 17 Jan 2012 07:22:27
Message: <4f156803$1@news.povray.org>
On 12-01-16 03:00 PM, Stephen wrote:

> an idea to render it. To begin with an exterior scene.
> Thanks to Lars R who reminded me about super-ellipsoids.
>
That looks like a good start.  However, the ring is described as 
toroidal in the first book.


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From: Stephen
Subject: Re: John Varley’s_Gaea
Date: 17 Jan 2012 07:37:43
Message: <4f156b97@news.povray.org>
On 17/01/2012 12:22 PM, Tail Kinker wrote:
> On 12-01-16 03:00 PM, Stephen wrote:

>> an idea to render it. To begin with an exterior scene.
>> Thanks to Lars R who reminded me about super-ellipsoids.
>>
> That looks like a good start. However, the ring is described as toroidal
> in the first book.

Yes thanks, then later as like a cartwheel. Varley was not very 
consistent, the width was either 25 Km or 250. Also it is almost 
invisible from the outside. Which makes it hard to render. ;-)
I actually spent more time on Saturn's rings.

-- 
Regards
     Stephen


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From: Thomas de Groot
Subject: Re: John Varley’s_Gaea
Date: 17 Jan 2012 10:38:43
Message: <4f159603$1@news.povray.org>
On 17-1-2012 13:37, Stephen wrote:
> On 17/01/2012 12:22 PM, Tail Kinker wrote:
>> On 12-01-16 03:00 PM, Stephen wrote:

>>> an idea to render it. To begin with an exterior scene.
>>> Thanks to Lars R who reminded me about super-ellipsoids.
>>>
>> That looks like a good start. However, the ring is described as toroidal
>> in the first book.
>
> Yes thanks, then later as like a cartwheel. Varley was not very
> consistent, the width was either 25 Km or 250. Also it is almost
> invisible from the outside. Which makes it hard to render. ;-)
> I actually spent more time on Saturn's rings.
>

Looking good actually. Can a cartwheel have a toroidal body though? Like 
a tyre? ;)
The width is probably closer to 250 km than 25, as the diameter is some 
1300 km... also to accommodate the landscape.

Have you seen this site? http://ammonra.org/gaea/

Thomas


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From: Stephen
Subject: Re: John Varley’s_Gaea
Date: 18 Jan 2012 04:42:23
Message: <4f1693ff$1@news.povray.org>
On 17/01/2012 3:38 PM, Thomas de Groot wrote:
> Looking good actually. Can a cartwheel have a toroidal body though? Like
> a tyre? ;)
> The width is probably closer to 250 km than 25, as the diameter is some
> 1300 km... also to accommodate the landscape.
>

250 km is what I used.

> Have you seen this site? http://ammonra.org/gaea/

No. I did look but did not find. Thanks for the site.
I see that I will need to change the fins too.
The interior should be more challenging.

-- 
Regards
     Stephen


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