in news:web.5c4c3b5ad91f5294e5f701770@news.povray.org And wrote:

> How to write a media density like
> 
> 

Turn the pigment part of your density to a function. 

Use nested loops to sample the function in the resolution you want. 

Put the resulting data into one or more arrays. 

Use a macro to write these arrys in the proper way to a file. There is 
such a macro in the distribution, in arrays.inc : ARRAYS_WriteDF3(Array, 
FileName, BitDepth). I've not used it yet but it will dictate hoe to set 
up your data array before writing

ingo

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