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I just rendered 600 pictures for
an animation.
Flying over a village with big
photovoltaic roofs.
The source for the scnee is at
http://wohnen.pege.org/2011-solares-bauland/pov.zip
With the setings in this file,
picture 316, 364, 450
has complete different color on the roof.
The roof is with a material map
#declare house_t_PV_Unit = texture
{ material_map
{ gif "map-pv.gif"
texture { house_t_Aluminium }
texture { house_t_PV_Silizium }
texture { house_t_PV_Silizium }
texture { house_t_PV_Silizium }
} // material_map
} // texture
can this be an error in POV?
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From: Christian Froeschlin
Subject: Re: Strange flashes from a partial mirror surface
Date: 13 May 2011 22:50:22
Message: <4dcdedee$1@news.povray.org>
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> With the setings in this file,
> picture 316, 364, 450
> has complete different color on the roof.
what version are you using? I tried a test
render of all frames in 320x240 No AA with
3.7 RC3 on 64-bit and did not see the effect.
My best guess would be a precision issue somewhere
as your scene uses large distances for the sun/sky.
This doesn't work well together with small
scale modelling.
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From: Roland Mösl
Subject: Re: Strange flashes from a partial mirror surface
Date: 14 May 2011 06:43:06
Message: <4dce5cba$1@news.povray.org>
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On 2011-05-14 04:50, Christian Froeschlin wrote:
>
>> With the setings in this file,
>> picture 316, 364, 450
>> has complete different color on the roof.
>
> what version are you using?
3.6.2.msvc9.win64
> I tried a test
> render of all frames in 320x240 No AA with
> 3.7 RC3 on 64-bit and did not see the effect.
>
> My best guess would be a precision issue somewhere
> as your scene uses large distances for the sun/sky.
> This doesn't work well together with small
> scale modelling.
Oh, I just thought about moving the sun
149000000000 away
and to rotate and translate the scene,
that I can simulate sun positions
for every day of the year.
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> On 2011-05-14 04:50, Christian Froeschlin wrote:
>>
>>> With the setings in this file,
>>> picture 316, 364, 450
>>> has complete different color on the roof.
>>
>> what version are you using?
>
> 3.6.2.msvc9.win64
>
>> I tried a test
>> render of all frames in 320x240 No AA with
>> 3.7 RC3 on 64-bit and did not see the effect.
>>
>> My best guess would be a precision issue somewhere
>> as your scene uses large distances for the sun/sky.
>> This doesn't work well together with small
>> scale modelling.
>
> Oh, I just thought about moving the sun
> 149000000000 away
>
> and to rotate and translate the scene,
> that I can simulate sun positions
> for every day of the year.
>
>
Place your sun much closer and use the parallel option.
Alan
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From: Roland Mösl
Subject: Re: Strange flashes from a partial mirror surface
Date: 5 Nov 2011 14:42:54
Message: <4eb583ae$1@news.povray.org>
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> I just rendered 600 pictures for
> an animation.
>
> Flying over a village with big
> photovoltaic roofs.
>
> The source for the scnee is at
>
> http://wohnen.pege.org/2011-solares-bauland/pov.zip
>
> With the setings in this file,
> picture 316, 364, 450
> has complete different color on the roof.
>
> The roof is with a material map
>
> #declare house_t_PV_Unit = texture
> { material_map
> { gif "map-pv.gif"
> texture { house_t_Aluminium }
> texture { house_t_PV_Silizium }
> texture { house_t_PV_Silizium }
> texture { house_t_PV_Silizium }
> } // material_map
> } // texture
>
> can this be an error in POV?
The failure was in map-pv.gif
In all the pictures had been only
used
color index 0
color index 254
I reduced color depth to 16.
Now had the 2 used colors index 0, 1
and the effect dissappeared
--
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