POV-Ray : Newsgroups : povray.binaries.images : Silentium and Poseray Server Time
3 Jul 2024 00:32:20 EDT (-0400)
  Silentium and Poseray (Message 1 to 8 of 8)  
From: Thomas de Groot
Subject: Silentium and Poseray
Date: 25 Sep 2014 10:32:42
Message: <5424278a@news.povray.org>
At first view, a piece of modern architecture invading an ancient one.

However.

Two versions of the Cloister are mixed her. The normal one from all 
preceding images, and a version where Poseray only converted the 
bounding boxes of the model. No subsequent transformations have been 
applied to both models and yet, the bounding boxes seem to be shifted 
along the z-axis by a certain value. I cannot explain this, maybe FlyerX 
can?

Thomas


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Preview of image 'silentium_test.png'
silentium_test.png


 

From: Stephen
Subject: Re: Silentium and Poseray
Date: 25 Sep 2014 11:47:07
Message: <542438fb@news.povray.org>
On 25/09/2014 15:32, Thomas de Groot wrote:
> At first view, a piece of modern architecture invading an ancient one.
>
> However.
>
> Two versions of the Cloister are mixed her. The normal one from all
> preceding images, and a version where Poseray only converted the
> bounding boxes of the model. No subsequent transformations have been
> applied to both models and yet, the bounding boxes seem to be shifted
> along the z-axis by a certain value. I cannot explain this, maybe FlyerX
> can?
>
> Thomas
Would it take long to do it viewing straight at the shift, maybe with a 
ruler in view? That might give you an idea.
You might have introduced an offset in one of the scale and or transform 
coefficients before you saved the geometry file.

-- 

Regards
     Stephen


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From: Thomas de Groot
Subject: Re: Silentium and Poseray
Date: 26 Sep 2014 03:24:51
Message: <542514c3$1@news.povray.org>
On 25-9-2014 17:47, Stephen wrote:
> Would it take long to do it viewing straight at the shift, maybe with a
> ruler in view? That might give you an idea.
> You might have introduced an offset in one of the scale and or transform
> coefficients before you saved the geometry file.
>
I am going to sniff around indeed but both versions are coming out 
straight from Poseray without any further transformations... But it 
probably will turn out I am wrong ;-)

Thomas


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From: Thomas de Groot
Subject: Re: Silentium and Poseray
Date: 26 Sep 2014 04:24:05
Message: <542522a5@news.povray.org>
There definitely is a problem with Poseray. When the group of objects is 
assymmetrical around the origin, the bounding boxes of the simplified 
geometry are shifted.

Thomas


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Attachments:
Download 'silentium_test.png' (372 KB)

Preview of image 'silentium_test.png'
silentium_test.png


 

From: Cousin Ricky
Subject: Re: Silentium and Poseray
Date: 26 Sep 2014 06:55:00
Message: <web.542545b8a9889738192ae5f10@news.povray.org>
Thomas de Groot <tho### [at] degrootorg> wrote:
> There definitely is a problem with Poseray. When the group of objects is
> assymmetrical around the origin, the bounding boxes of the simplified
> geometry are shifted.

Could it be a left-handed/right-handed mix-up?


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From: Thomas de Groot
Subject: Re: Silentium and Poseray
Date: 26 Sep 2014 07:07:03
Message: <542548d7@news.povray.org>
On 26-9-2014 12:53, Cousin Ricky wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> There definitely is a problem with Poseray. When the group of objects is
>> assymmetrical around the origin, the bounding boxes of the simplified
>> geometry are shifted.
>
> Could it be a left-handed/right-handed mix-up?

It shouldn't be as the the two conversions are based on the same 
original model as read in Poseray. Note also the shifting to the right 
for the big sphere and to the left for the two cubes in the back while 
the small sphere seems all right.

I include the test files so you can try them. Just include them in a scene.

Thomas


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Attachments:
Download 'windows-1252' (48 KB) Download 'windows-1252' (9 KB) Download 'windows-1252' (3 KB)

From: Thomas de Groot
Subject: Re: Silentium and Poseray
Date: 26 Sep 2014 07:22:23
Message: <54254c6f@news.povray.org>
From another angle, all objects are visibly shifted differently...

Thomas


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Attachments:
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Preview of image 'silentium_test.png'
silentium_test.png


 

From: Thomas de Groot
Subject: Re: Silentium and Poseray: got it!
Date: 26 Sep 2014 07:37:00
Message: <54254fdc@news.povray.org>
On 26-9-2014 12:53, Cousin Ricky wrote:
> Could it be a left-handed/right-handed mix-up?

Got it indeed. Scale the simplified geometry: scale <-1,1,1>

You were indeed right.

Thomas


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Attachments:
Download 'silentium_test.png' (470 KB)

Preview of image 'silentium_test.png'
silentium_test.png


 

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