I love that. It looks so... real!!!
Concentrating your eyes in the center of the shadows of the sphere, the white
light seems to shrink and expand. Wow, my eyes are playing crazy things.
Does that glow around the white light also belong to the area_illumination
feature or is it an effect of some scattered material?

Regards
          bluetree

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"Alain" <ele### [at] netscapenet> wrote in message 
news:478f85be$1@news.povray.org...
> Zeger Knaepen nous apporta ses lumieres en ce 2008/01/16 19:15:
>> area_illumination is your addition to POV-Ray where an area_light gives 
>> much more realistic results in diffuse and specular lighting, right?
>>
>> I was wondering, does it also affect photons?
>>
>> nice image btw :) love the soft lighting!
>>
>> cu!
> For the photons, you need to add "area_light" in the light's photons 
> block. Not a new feature.
>
> light_source{10 color rgb 1 area_light 2*x,2*z 17,17
> photons{area_light}
> }

ah, didn't know that
thanks! :)

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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bluetree wrote:
> Does that glow around the white light also belong to the area_illumination
> feature or is it an effect of some scattered material?

  It's just trickery.

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Warp wrote:
>   It's just trickery.

Details? :-)

-- 
William Tracy
afi### [at] gmailcom -- wtr### [at] calpolyedu

You know you've been raytracing too long when you find yourself trying
to hack your way into one of the Cray super computers convinced if you
can get in you could prove real-time raytracing was possible.
    -- Ken Tyler

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William Tracy wrote:
> Warp wrote:
>>   It's just trickery.
> 
> Details? :-)

  Emitting media.

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Just downloaded 3.7b24 to try it out ... is the effect
of area_light with area_illumination basically identical
to using a grid of normal light_sources, but still more
efficient due to adaptive sampling?

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Christian Froeschlin wrote:
> Just downloaded 3.7b24 to try it out ... is the effect
> of area_light with area_illumination basically identical
> to using a grid of normal light_sources, but still more
> efficient due to adaptive sampling?

  Yes, it should be basically the same as with a grid of point lights.
Speed comes from the fact that shadow tests are much faster than would
be with the point lights.

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Warp wrote:

>   Yes, it should be basically the same as with a grid of point lights.
> Speed comes from the fact that shadow tests are much faster than would
> be with the point lights.

Cool! Actually, it just occurred to me that the functionality
should be quite similar to tgq's lightdome macro. Both light dome
and area_light would seem to be special cases of some "grid_light"
supporting multiple grid shapes and individual light colors ;)

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Christian Froeschlin wrote:
> Just downloaded 3.7b24 to try it out ... is the effect
> of area_light with area_illumination basically identical
> to using a grid of normal light_sources, but still more
> efficient due to adaptive sampling?

  Btw, I suppose you didn't see my post about the subject
in the beta group. I posted links to an example:

  This is an image rendered with a regular old area_light (rendered with
"-w800 -h600 +a0.1 +am2"):

http://warp.povusers.org/images/arealighttest1.jpg

  It took 13 seconds to render in my computer.

  This is the same scene, but the area light has been replaced with the
equivalent grid of point lights:

http://warp.povusers.org/images/arealighttest2.jpg

  This took 1 min 51 seconds to render.

  This is, again, the area_light, but with the new full area lighting
feature turned on:

http://warp.povusers.org/images/arealighttest3.jpg

  This took 36 seconds to render.

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On Sat, 19 Jan 2008 19:39:38 +0100, Christian Froeschlin <chr### [at] chrfrde> wrote:

>Cool! Actually, it just occurred to me that the functionality
>should be quite similar to tgq's lightdome macro. Both light dome
>and area_light would seem to be special cases of some "grid_light"
>supporting multiple grid shapes and individual light colors ;)

That'd be cool functionality.  I second.

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