On 30/04/2015 15:48, LanuHum wrote:
> "LanuHum" <Lan### [at] yandexru> wrote:
>> For creation of df3 the Blender exporter - Povray uses Python
>> http://povray.tashcorp.net/tutorials/script_df3/
>>
>> mydf3.set(x, y, z, 10)
>>
>> To me it is unclear that there is value 10?
>>
>> Blender has the density parameter from 0 to 1.
>> It is natural to density color_map at Povray.
>>
>> I understand so, what if (x, y, z, 0.5)
>> and color_map{
>> [0,rgb 0]
>> [0.5, rgb <1,0,0>]
>> [1,rgb 1]
>> }
>> voxel has to be red?
>>
>> Or how to paint voxel?
>
> I understood.
> background black
>
>      interior{ //---------------------
>          media{ method 2
>                 emission 1 // !!! no color
>                  density{density_file df3 "/tmp/smoke_Smoke_Domain.df3"
>                          color_map
>           { [0 rgb 0]
>             [0.2 rgb <1,0.5,0>]
>             [0.4 rgb <1,1,0>]
>             [1 rgb <0,0,1>]
>           }
>                 } // end of density
>                 samples 512 // higher = more precise
>           } // end of media --------------------------
>      }
>
> Very good!
>
>

FYI
I am making a df3 file in PovRay by creating a series of images and 
stitching them together.
I want the colour map to wrap round the 0 and 1 positions. Like in the 
screenshot.

This colour map gives me a grey background.

color_map {
   [0.000 rgbft <0.000,0.000,1.000,0.000,0.000>]
   [0.167 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.333 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.500 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.667 rgbft <0.000,0.000,1.000,0.000,0.000>]
   [0.834 rgbft <0.000,0.000,1.000,0.000,0.000>]
   [1.000 rgbft <0.000,0.000,1.000,0.000,0.000>]
}
I had to change it to this to get a black background.

   [0.0   rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.001 rgbft <0.333,0.333,0.333,0.000,0.000>]
   [0.167 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.333 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.500 rgbft <0.000,0.000,0.000,0.000,0.000>]
   [0.667 rgbft <0.333,0.333,0.333,0.000,0.000>]
   [0.834 rgbft <0.333,0.333,0.333,0.000,0.000>]
   [0.999 rgbft <0.333,0.333,0.333,0.000,0.000>]
   [1.000 rgbft <0.0,0.0,0.0,0.000,0.000>]




-- 

Regards
     Stephen

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