[Radiance-general] Radiance and road design

[pillo]

thanks a lot!!!!!!!
i had some problem with my mail server, so my thanks arrive late, but: 
thanks a lot  again.
pillo

PS.
UNI stands for Italian comitee for standardization of norms.
http://www.uni.com/eng/index.shtml



> Hi Pillo,
>
> I don't know much about most of your question, but i can point you in 
> the direction of an example application of the brtdfunc.  have a look 
> at he.cal.  it doesn't actually work as well as it could (problems in 
> calculation of z0 and Dsum2 which i had to fix up), but it is a working 
> function file and example of application of brtdfunc.
>
> good luck,
> Phil.
>
> At 08:44 pm 4/06/02 +0200, you wrote:
>> Hi,
>> here pillo (me, superBEGINNER, may be spiderBEGINNER)
>>  with some questions about road design with Radiance:
>>
>> i would like to use UNI's r-tables (UNI 10489),
>> where  r=[(luminance/illuminance)*cos3(g)],
>> to describe asphalt behavior.
>> i think BRDF is the way.
>> but i need some advices:
>>
>> where i can found some examples of BRDF usage?
>> is it possible only with r tables ?
>>
>> best regards,
>> pillo
>>
>> PS r coefficients are measured at point P in function of the angle (g) 
>> between source rays (looking at P) and  surface normal, and the 
>> horizontal angle (b) between source rays and observation direction 
>> (looking at P).
>> The observation direction has a vertical, fixed, angle of 1�.
>> the source is tought punctual.
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general@radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general
>