John VanSickle nous apporta ses lumieres en ce 2007/09/17 20:00:
> This is for the TC-RTC.  The rock face is a series of procedural height 
> fields, made from a few different patterns averaged together.
> 
> I didn't use a smooth height field because the border between any two 
> hfs is rather obvious until the resolution is high enough to make 
> smoothing unecessary.
> 
> The texture is this:
> 
> #local rsA=seed(0);
> 
>   texture {
>     pigment { marble frequency 1 ramp_wave turbulence <.1,01,.1> omega 
> .4 lambda 1.5
>       pigment_map {
> #local sA=.5;
>         [0 bumps scale <.1,1,.1> translate 0-64
>           color_map { [0 rgb <.7,.675,.65>+<.1,.05,0>*sA][1 rgb 
> <.9,.875,.85>+<.1,.05,0>*sA] }
>         ]
> #local iI=1;#while(iI<128)
>         [(iI-.01)/128 bumps scale <.1,1,.1> translate iI-64
>           color_map { [0 rgb <.7,.675,.65>+<.1,.05,0>*sA][1 rgb 
> <.9,.875,.85>+<.1,.05,0>*sA] }
>         ]
>         #local sA=rand(rsA);
>         [(iI+.01)/128 bumps scale <.1,1,.1> translate iI+1-64
>           color_map { [0 rgb <.7,.675,.65>+<.1,.05,0>*sA][1 rgb 
> <.9,.875,.85>+<.1,.05,0>*sA] }
>         ]
> #local iI=iI+1;#end
>         [1 bumps scale <.1,1,.1> translate 128-64
>           color_map { [0 rgb <.7,.675,.65>+<.1,.05,0>*sA][1 rgb 
> <.9,.875,.85>+<.1,.05,0>*sA] }
>         ]
>       }
>     }
>     normal { marble 1 frequency 1 ramp_wave turbulence <.1,.01,.1> omega 
> .4 lambda 1.5
>       normal_map {
> #local iI=0;#while(iI<129)
>         [iI/128 bumps .031 scale <.1,1,.1> translate iI-64 ]
> #local iI=iI+1;#end
>       }
>     }
>     transform FlipXY
>     scale <1000,150,1000>
>   }
> 
> There will be a tunnel entrance here when I'm done.
> 
> Regards,
> John
> 
> ------------------------------------------------------------------------
> 
Almost looks like a processed photo.

-- 
Alain
-------------------------------------------------
  My bologna has a first name.

                    Oscar Mayer

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