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From: Thomas de Groot
Subject: Pending Storm
Date: 27 Sep 2020 06:47:12
Message: <5f703570@news.povray.org>
Last January, I came across and intriguing photograph of Loubressac 
Castle (Lot, France). It stayed in the back of my mind till this summer 
when I started to model it in Silo, and thinking about a background 
landscape. I remembered my own entry to one of the TC-RTC challenges 
back in 2010 (Acres of Diamonds) and decided to use it. Many iterations 
and transformations resulted in the present image.

Indebted to Mike Hazelgrove for the clouds macro; Gilles Tran for the 
MakeGrass macro. Paolo, I tweaked your Grunge texture. Thanks indeed!

Some little tricks worth to mention: the Displacement utility in Poseray 
was used for the tower so that the sunlight might be broken about the 
masonry and the roof tiles. The trees, down in the plain, are 
billboards. In order for the shadows to look right, they are composed of 
two versions: one (with no_shadow) systematically oriented towards the 
camera, one (with no_image) systematically oriented towards the Sun.

-- 
Thomas


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pending storm_final.jpg


 

From: William F Pokorny
Subject: Re: Pending Storm
Date: 27 Sep 2020 13:17:01
Message: <5f7090cd$1@news.povray.org>
On 9/27/20 2:47 AM, Thomas de Groot wrote:
> Last January, I came across and intriguing photograph of Loubressac 
> Castle (Lot, France). It stayed in the back of my mind till this summer 
...
> 
I like it.

Bil P.


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From: Kenneth
Subject: Re: Pending Storm
Date: 27 Sep 2020 20:45:06
Message: <web.5f70f9aa9bb6a657d98418910@news.povray.org>
I really like the artistic composition of this image, and especially the chosen
late-afternoon (or early-morning?) Sun angle-- it throws the tower into shadow,
a nice touch. Beautiful,

> The trees, down in the plain, are
> billboards. In order for the shadows to look right, they are composed of
> two versions: one (with no_shadow) systematically oriented towards the
> camera, one (with no_image) systematically oriented towards the Sun.
>

That's quite clever, and works well! A nit-pic, though: It looks like the
'shadow billboards' are not quite lined up with the actual tree billboards; the
shadows are a little bit offset from the trees (to my eyes.) Not as to the
direction of the Sun, but as to emanating from the 'trees' themselves. The
shadow billboards had to be rotated to face the Sun, so maybe their
rotation-axes are not correct, i.e., offset somehow from the y-axis 'center' of
each billboard(?)


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From: Cousin Ricky
Subject: Re: Pending Storm
Date: 27 Sep 2020 21:05:48
Message: <5f70feac$1@news.povray.org>
On 2020-09-27 4:44 PM (-4), Kenneth wrote:
> 
> 
> That's quite clever, and works well! A nit-pic, though: It looks like the
> 'shadow billboards' are not quite lined up with the actual tree billboards; the
> shadows are a little bit offset from the trees (to my eyes.) Not as to the
> direction of the Sun, but as to emanating from the 'trees' themselves. The
> shadow billboards had to be rotated to face the Sun, so maybe their
> rotation-axes are not correct, i.e., offset somehow from the y-axis 'center' of
> each billboard(?)

The shadow positions look fine to me.  The problem I see is that there 
is often no tree trunk shadow, probably due to them being narrower than 
a pixel, and this makes the shadows seem disconnected from the trees.


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From: Thomas de Groot
Subject: Re: Pending Storm
Date: 28 Sep 2020 06:19:35
Message: <5f718077$1@news.povray.org>
Op 27/09/2020 om 23:05 schreef Cousin Ricky:
> On 2020-09-27 4:44 PM (-4), Kenneth wrote:
>>
>>
>> That's quite clever, and works well! A nit-pic, though: It looks like the
>> 'shadow billboards' are not quite lined up with the actual tree 
>> billboards; the
>> shadows are a little bit offset from the trees (to my eyes.) Not as to 
>> the
>> direction of the Sun, but as to emanating from the 'trees' themselves. 
>> The
>> shadow billboards had to be rotated to face the Sun, so maybe their
>> rotation-axes are not correct, i.e., offset somehow from the y-axis 
>> 'center' of
>> each billboard(?)
> 
> The shadow positions look fine to me.  The problem I see is that there 
> is often no tree trunk shadow, probably due to them being narrower than 
> a pixel, and this makes the shadows seem disconnected from the trees.

Well gentlemen, this is interesting. Kenneth: I /think/ I have 
positioned the billboard correctly according to origin, but I might need 
to control this. Cousin Ricky: yes indeed, the trunks are a tad too 
narrow. Maybe I should have planted different trees :-)

-- 
Thomas


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From: Thomas de Groot
Subject: Re: Pending Storm
Date: 28 Sep 2020 06:20:08
Message: <5f718098$1@news.povray.org>
Op 27/09/2020 om 15:17 schreef William F Pokorny:
> On 9/27/20 2:47 AM, Thomas de Groot wrote:
>> Last January, I came across and intriguing photograph of Loubressac 
>> Castle (Lot, France). It stayed in the back of my mind till this summer 
> ...
>>
> I like it.
> 

Thanks indeed. :-)

-- 
Thomas


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From: Paolo Gibellini
Subject: Re: Pending Storm
Date: 28 Sep 2020 08:38:40
Message: <5f71a110@news.povray.org>
Thomas de Groot wrote on 27/09/2020 08:47:
> Last January, I came across and intriguing photograph of Loubressac 
> Castle (Lot, France). It stayed in the back of my mind till this summer 
> when I started to model it in Silo, and thinking about a background 
> landscape. I remembered my own entry to one of the TC-RTC challenges 
> back in 2010 (Acres of Diamonds) and decided to use it. Many iterations 
> and transformations resulted in the present image.
> 
> Indebted to Mike Hazelgrove for the clouds macro; Gilles Tran for the 
> MakeGrass macro. Paolo, I tweaked your Grunge texture. Thanks indeed!
> 
> Some little tricks worth to mention: the Displacement utility in Poseray 
> was used for the tower so that the sunlight might be broken about the 
> masonry and the roof tiles. The trees, down in the plain, are 
> billboards. In order for the shadows to look right, they are composed of 
> two versions: one (with no_shadow) systematically oriented towards the 
> camera, one (with no_image) systematically oriented towards the Sun.
> 

A very nice composition, and I like a lot the landscape and its colors.
The castle grass is kept very well by the gardeners (or maybe by the 
goats), it is curious that there is so much moss on the stones...

;-)

Paolo


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From: jr
Subject: Re: Pending Storm
Date: 28 Sep 2020 10:20:01
Message: <web.5f71b8a99bb6a6574d00143e0@news.povray.org>
hi,

Thomas de Groot <tho### [at] degrootorg> wrote:
> ... thinking about a background landscape. ...

fully agree with PG regarding landscape and colours.  not too far off views seen
in the Eifel.  lovely.


regards, jr.


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From: Kenneth
Subject: Re: Pending Storm
Date: 28 Sep 2020 17:55:01
Message: <web.5f7222cf9bb6a657d98418910@news.povray.org>
Cousin Ricky <ric### [at] yahoocom> wrote:

>
> The shadow positions look fine to me.  The problem I see is that there
> is often no tree trunk shadow, probably due to them being narrower than
> a pixel, and this makes the shadows seem disconnected from the trees.

Well... I was wrong-- the shadows do line up. My apologies, Thomas! My eyes seem
to be working better today ;-) Yes, what threw me off were the missing (i.e.,
too thin) tree trunks in the tree shadows, and not seeing where the actual tree
trunks meet the ground.

Btw, the clouds in the image look really nice, a BIG detail I didn't pay
attention to at first... even though the title is "Pending Storm", ha. I was too
busy enjoying other parts of the image  :-O


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Attachments:
Download 'pending storm close-up.jpg' (111 KB)

Preview of image 'pending storm close-up.jpg'
pending storm close-up.jpg


 

From: Bill Pragnell
Subject: Re: Pending Storm
Date: 28 Sep 2020 21:55:08
Message: <web.5f725b109bb6a6571b6c6b3a0@news.povray.org>
This is a nice image. Your buildings are excellent as always, but I'm most
intrigued by the landscape. The patchwork of fields is very convincing - you
allude to a previous challenge scene, but I'm sure I've never seen this effect
before. How was it done?

I've experimented briefly with British-style irregular drystone-walled fields
before, and it's no trivial problem! As with many experiments, it dissolved into
an abstract geometric modelling saga woefully unsuited to SDL, but I hope to
return to it someday...

Also excellent clouds!

Bill


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