It'd make a nice 'wreath' for the Christmastime desktop of some
chemist... ;-)
-MMW

Frederic Delhoume wrote:
> 
> Hi,
> 
> I am rendering molecules as a hobby (because I find them very nice).
> I already made various renderings using standard lights and I am now trying
> radiosity.
> 
> I have a simple plane, a molecule over this floor and a sphere for ambient
> illumination.
> I also have an area light for specular effects.
> I am using MegaPov 0.7
> 
> I have some little dark spots on the plane I cannot explain.
> What is wrong with my parameters ?
> The image is not rendered anti-aliased (it takes days to render)
> 
> Here is my source code (I removed the molecule because of the size but I can
> mail
> the entire source code if needed, it's only 9K zipped)
> 
> #version unofficial MegaPov 0.7;
> declare CameraLocation = < 0, 0, 26.8337451068 > ;
> 
> global_settings {
>   ini_option "+QR"
>   radiosity {
>     pretrace_start 0.08
>     pretrace_end   0.01
>     count 1500
> 
>     nearest_count 10
>     error_bound 0.02
>     recursion_limit 1
> 
>     low_error_factor .2
>     gray_threshold 0.0
>     minimum_reuse 0.015
>     brightness 1
> 
>     adc_bailout 0.01/2
> 
>   }
> }
> 
>     light_source {
>     <0, 0, 80>
>     color rgb < 0.3, 0.3, 0.3 >
>     area_light <10, 0, 0>, <0, 10, 0>, 11, 11
>     adaptive 1
>     jitter
>   }
> 
> camera {
>   up < 0, 0, 1 >
>   right < 0, 0, 1 >
>   angle 35
>   translate CameraLocation
>   look_at < 0, 0, -1 >
> }
> 
> // here should be the object (bunch of spheres an cylinders)
> // ....
> 
> plane {
>   z, -3
>     texture { pigment { rgb <0.53, 0.63, 0.83> } finish { ambient .0 diffuse
> .8 } }
>   }
> 
>    // the source of ambient lighting
>  sphere {
>   <0, 0, 0>, 100
>       pigment { color rgb <0.8, 0.8, 0.8> }
>       finish { ambient 1.0 }
>  }
> 
>   ------------------------------------------------------------------------
>                     Name: c42h70c35.jpg
>    c42h70c35.jpg    Type: JPEG Image (image/jpeg)
>                 Encoding: base64

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