Am 12.12.2010 06:47, schrieb Bidski:
> Does anyone know of a website or something that speaks of the optical properties
> of the other gems (rubies, sappphires, emeralds, etc)? By optical properties I
> basically mean the things we put in finish (diffuse, ambient, specular,
> roughness, brilliance, etc).

Finish information is all just a matter of how well the gem is polished; 
except for ambient, which is a kludge to simulate diffuse illumination 
coming from other objects - essentially the same job that radiosity does 
much better (albeit slower).

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> clipka<ano### [at] anonymousorg>  wrote:
>> Am 11.12.2010 07:44, schrieb Bidski:
>>> Or perhals this one? Although the bottom point of this one appears to be
>>> shrowded in darkess .... hmmmm.
>>
>> But you're definitely getting somewhere!
>
> Final product ..... 4 hours of rendering 120 frames with anti-aliasing. Im
> surprised windows didnt die from the effort.
>
> Regards
> Bidski
>
> http://i288.photobucket.com/albums/ll167/Bidskii/stone2-1.gif
>
>

Much beter that the original you wanted to emulate :)


Alain

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Bidski wrote:

> can POV-Ray do transparent backgrounds?

yes, render with command line option +ua (and a file
format such as PNG that supports transparency). If the
ray doesn't hit an object the pixel will be transparent,
although there are some tricky details regarding things
like anti-aliased pixels. And with a transparent object,
there may be additional issues such as not correctly
showing refracted parts of the new background.

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