Is there any extensive list of texture attributes for various materials?
I mean is there other way to set attributes (diffuse ambient  specular
roughness brilliance reflection...)
than trying random numbers?:-)
I have some exact material ... like clear diamond, copper, etc.. and I'd
like to know how to set those atributes.

Thanks

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Program ended abnormally on 2/8/03 9:39 AM, Due to a catastrophic
Kosina.Josef error:
> Is there any extensive list of texture attributes for various materials?
> I mean is there other way to set attributes (diffuse ambient  specular
> roughness brilliance reflection...)
> than trying random numbers?:-)
> I have some exact material ... like clear diamond, copper, etc.. and I'd
> like to know how to set those atributes.
> 
> Thanks

Unfortunately, the sites I have bookmarked are usually waaaaaaaaaaaaay 
too technical for POV as these values vary with wavelength of the 
lightsource used and are hard to isolate experimentally (i.e., one can 
not easily separate the amount of light given by "diffuse" from the 
amount given by "reflection" or "specular")

This being said,

You can get IOR values for many materials here:

http://www.io.tudelft.nl/research/dfs/idemat/Onl_db/od_frame.htm

And reflectance-by-wavelength values here:

http://speclib.jpl.nasa.gov/Search.htm

This should allow you to find the "diffuse" value of some constrution or 
mineral materials, by either averaging the different values given, or if 
your lightsource is a specific color, using the proper wavelength value.

But it's usually mostly a trial-and-error process.

Hope this helps.
> 
> 


-- 
/*Francois Labreque*/#local a=x+y;#local b=x+a;#local c=a+b;#macro P(F//
/*    flabreque    */L)polygon{5,F,F+z,L+z,L,F pigment{rgb 9}}#end union
/*        @        */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/*   videotron.ca  */}camera{orthographic location<6,1.25,-6>look_at a }

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In article <3e45163d$1@news.povray.org>,
 "Kosina.Josef" <kos### [at] felcvutcz> wrote:

> Is there any extensive list of texture attributes for various materials?
> I mean is there other way to set attributes (diffuse ambient  specular
> roughness brilliance reflection...)
> than trying random numbers?:-)
> I have some exact material ... like clear diamond, copper, etc.. and I'd
> like to know how to set those atributes.

Have you looked at the include files that come with POV?

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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