I have been rendering a set of frames for a simple animation, and out of the
360 frames I noticed that some didn't have any of the highlights or
reflections that they should.

I've attached anismall008b.jpg, and as you can see, there's no highlight
spot.  If I just render the same frame again, I get anismall008.jpg with the
highlight.

I was out to lunch, so I definitely didnt change the scene file mid-frame.

Any ideas?

thanks,

Mark


--ini file--
Input_File_Name=sphere.pov
Output_File_Name=ani/anismall.png
Output_To_File=on
Width=180
Height=100
Antialias=on
Antialias_Threshold=0.4
Sampling_Method=1
Jitter=off
Final_Frame=360
Cyclic_Animation=on
Declare=ShowAtmosphere=0
Declare=ShowGalaxy=1
Declare=ShowTudes=0
Declare=UseHighRes=0
Declare=UseIsoBall=1
--

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Attachments:
Download 'anismall008b.jpg' (6 KB) Download 'anismall008.jpg' (6 KB)

Preview of image 'anismall008b.jpg'

Preview of image 'anismall008.jpg'

Does the animation use a shadowless light_source? That's the only reason 
I can think of explaining why there is no highlight..... Shadowless 
light_sources never produce them.

Mark Hanford wrote:

> I have been rendering a set of frames for a simple animation, and out of the
> 360 frames I noticed that some didn't have any of the highlights or
> reflections that they should.
> 
> I've attached anismall008b.jpg, and as you can see, there's no highlight
> spot.  If I just render the same frame again, I get anismall008.jpg with the
> highlight.
> 
> I was out to lunch, so I definitely didnt change the scene file mid-frame.
> 
> Any ideas?
> 
> thanks,
> 
> Mark
> 
> 
> --ini file--
> Input_File_Name=sphere.pov
> Output_File_Name=ani/anismall.png
> Output_To_File=on
> Width=180
> Height=100
> Antialias=on
> Antialias_Threshold=0.4
> Sampling_Method=1
> Jitter=off
> Final_Frame=360
> Cyclic_Animation=on
> Declare=ShowAtmosphere=0
> Declare=ShowGalaxy=1
> Declare=ShowTudes=0
> Declare=UseHighRes=0
> Declare=UseIsoBall=1
> --
> 
> 
> 


-- 
Samuel Benge

stb### [at] hotmailcom

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"Samuel Benge" <sbe### [at] hotmailcom> wrote in message
news:3F9### [at] hotmailcom...
> Does the animation use a shadowless light_source? That's the only reason
> I can think of explaining why there is no highlight..... Shadowless
> light_sources never produce them.
>


No, it's a simple light_source{<3, 0,-5>*1000, color 3.0}, and the frames
were all rendered in one sequence for the whole lot.

Incidentally, the only bit of "animation" in the scene file is the spinning
of the globe:

union{
  object{Globe}
  rotate -360*y*clock
  rotate 23.5*z
}

Mark

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> I was out to lunch, so I definitely didnt change
> the scene file mid-frame.
> Any ideas?

Someone else changed it.  :o)

Regards,
Hugo

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"Mark Hanford" <pov### [at] hanfordonlinecouk> wrote in message
news:3f9fe44e@news.povray.org...
>
> union{
>   object{Globe}
>   rotate -360*y*clock
>   rotate 23.5*z
> }

Not sure why you unioned a single object. Although I don't think that would
cause a problem, except for a error message. I'd suspect the isosurface
accuracy or max_gradient, or perhaps some CSG anamoly, if it weren't for the
solitary frame rendering you tried and got highlights from that. So, that
leaves scale of the things used in your scene I guess. Is the highlighting
portion a separate surface very, very, close to the rest of the Earth
surface? And how is it built together if it is a water, land parts... union,
difference, intersection, merge?

Bob H.

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"Hughes, B." <omn### [at] charternet> wrote in message
news:3fa05209@news.povray.org...
> "Mark Hanford" <pov### [at] hanfordonlinecouk> wrote in message
> news:3f9fe44e@news.povray.org...
> >
> > union{
> >   object{Globe}
> >   rotate -360*y*clock
> >   rotate 23.5*z
> > }
>
> Not sure why you unioned a single object. Although I don't think that
would
> cause a problem, except for a error message.
There was/is going to be some more stuff there, like lat/long lines and
location markers

> I'd suspect the isosurface accuracy or max_gradient, or perhaps some
> CSG anamoly, if it weren't for the solitary frame rendering you tried and
> got highlights from that. So, that leaves scale of the things used in your
> scene I guess. Is the highlighting portion a separate surface very, very,
> close to the rest of the Earth surface?
The highlight is using a material map, so it's all on one object
    texture{
        material_map
            {
             png "earthspec1k.png" map_type 1 once//0 is land, 1 is sea
            texture{pigment{PigEarth} normal{NorEarth} finish{FinLand}}
            texture{pigment{PigSea} normal{NorEarth} finish{FinSea}}
            }
    }
    rotate 270*y
}

> And how is it built together if it is a water, land parts... union,
> difference, intersection, merge?
One Isosurface{}

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