Thomas de Groot <tho### [at] degrootorg> wrote:
> On 14-4-2012 8:33, Norbert Kern wrote:
> > look at the old LOTW2 project pages of Christoph Hormann
> > (http://www.imagico.de/lotw2/history.php).
> > Here you can find tons of nice procedural textures - but you have to extract the
> > texture definitions from the files and includes...
> >
>
> Nice to play again with those landscapes. They stimulate ideas for
> future scenes.
>
> I have "improved" the sky/Sun code for the LOTW scenes (see image
> below). The following code can be used for all of them I suppose, just
> copy and past the relevant section in the LOTW scene files. You need the
> CIE.inc file though, which can be found here:
> http://www.ignorancia.org/en/index.php?page=Lightsys
>
> //start code
> // --- part written by skies.inc ---
>
> // ----------------------------------------
> //  >>>> skysphere sky <<<<
> // ----------------------------------------
>
> #include "CIE.inc"
> #declare SunColor = Blackbody(2800)*1;  //2800=red; 7500=white blue
>
> #declare Azm = 20;
> #declare Alt = 5;
>
> #declare fn_horizon=function { max(z, 0) }
>
> #declare fn_sun=
>    function {
>      pattern {
>        spherical
>        scale 3
>        translate y
>        rotate x*Alt
>        rotate z*Azm
>      }
>    }
>
> sky_sphere {
>    pigment {
>      function { pow(fn_horizon(x,y,z)*(1-fn_sun(x,y,z)), 0.400) }
>      color_map {
>        [0.000 color SunColor]
>        [0.426 color rgb <0.200, 0.300, 0.800>]
>      }
>    }
> }
>
>
>
> // --- part written by lighting.inc ---
>
> light_source {
>   <0,0,0>
>   color SunColor
>   translate 10e5*y
>   rotate x*Alt
>   rotate z*Azm
> }
>
> sphere {
>    0, 1
>    hollow on
>    no_shadow
>    pigment { rgbt 1 }
>    interior {
>      media {
>        emission SunColor/1000
>        density {
>          spherical
>          poly_wave 4
>          density_map {
>            [0.0 rgb 0]
>            [0.5 color rgb <0.3, 0.3, 0.3>]
>            [1.0 color rgb <1, 1, 1>]
>          }
>        }
>        samples 100 confidence .1
>      }
>    }
>    scale 24000
>    translate 10e5*y
>    rotate x*Alt
>    rotate z*Azm
> }
>
> //end code
>
> Enjoy!
>
> Thomas

I tried this Thomas... the scenes come out very grainy and dim.  Even moving the
Alt and Azm around, I couldn't get anything very good out of the render.

The other link to Christoph's textures and such gave me a texture I used here...

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