"Warp" <war### [at] tagpovrayorg> wrote in message
news:3bc49ba9@news.povray.org...
> JRG <jrg### [at] hotmailcom> wrote:
> : I noticed you did not use any specular higlights in your glass textures.
Are
> : you doing so because specular highlights do not exist in RL and you are
> : leaving the work to real reflections?
>
>   Specular highlights are a method to simulate a physical phenomenon which
> happens in reality. It's very difficult to simulate this phenomenon by
using
> just reflection (you need *at least* blurred reflection and probably
something
> more).

Like wavelength scattering and polarization perhaps.

Bob H.

> #macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
> rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
> ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> 7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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