shining a torch through your finger/hand/biological material in the dark

where because your hand is not completely opaque some light actually
goes through your hand and out the other side.

Does anyone know how to simulate it in POV

PS I saw it done with a leaf in either A Bugs Life or Antz but don't
know what renderer was used

--
Bye
Pabs

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Pabs wrote:
> 
> shining a torch through your finger/hand/biological material in the dark
> 
> where because your hand is not completely opaque some light actually
> goes through your hand and out the other side.
> 
> Does anyone know how to simulate it in POV

It's just filtered light. Think low values.
 
> PS I saw it done with a leaf in either A Bugs Life or Antz but don't
> know what renderer was used

A Bugs Life was done with Renderman compliant software from Pixar.
I don't recall off hand what they used for Antz.

If I'm not mistaken both are considered scanline renderers though
Pixar has been adding some raytracing in limited amounts where
needed for realism.

You can find out more about the production of Antz at:
http://www.antz.com/

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

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On Tue, 04 Jul 2000 22:17:22 -0700, Ken wrote:
>> PS I saw it done with a leaf in either A Bugs Life or Antz but don't
>> know what renderer was used
>
>A Bugs Life was done with Renderman compliant software from Pixar.

Specifically, PRMan.  They only used BMRT for a few scenes.

>I don't recall off hand what they used for Antz.

Where "they" is PDI, not Pixar.  I think someone from PDI said in cgrr
that it was mostly in-house stuff.

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.

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Pabs wrote:
> where because your hand is not completely opaque some light actually
> goes through your hand and out the other side.

Filter for the surface and scattering media inside.

K.K.

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Kari Kivisalo wrote:
> 
> Filter for the surface and scattering media inside.

... and a long time to wait...

Markus

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And double-illumination to enhance the effect.

~Samuel

Kari Kivisalo wrote:

> Filter for the surface and scattering media inside.

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Pabs wrote:
> 
> shining a torch through your finger/hand/biological material in the dark
> 
> where because your hand is not completely opaque some light actually
> goes through your hand and out the other side.
> 
> Does anyone know how to simulate it in POV
> 
> PS I saw it done with a leaf in either A Bugs Life or Antz but don't
> know what renderer was used
> 

Bezier patches triangles and smooth triangles have this a feature
(bug?).
Don't know how well this works for you.

Marc

-- 
Marc Schimmler

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I've said this before, but all objects in the official version of POV-Ray
have the 'double-illumination' bug. To see the bug, you have to add a normal
to the object, and clip the object with another so it is now perceived as an
infinitely-thin object:

camera{location<0,5,-10> look_at 0}

light_source{y*-100.,1}

sphere{0,3
 pigment{rgb 1}
 normal{bumps .0001}
}

Marc Schimmler wrote:

> Pabs wrote:
> >
> > shining a torch through your finger/hand/biological material in the dark
> >
> > where because your hand is not completely opaque some light actually
> > goes through your hand and out the other side.
> >
> > Does anyone know how to simulate it in POV
> >
> > PS I saw it done with a leaf in either A Bugs Life or Antz but don't
> > know what renderer was used
> >
>
> Bezier patches triangles and smooth triangles have this a feature
> (bug?).
> Don't know how well this works for you.
>
> Marc
>
> --
> Marc Schimmler

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