Christopher James Huff wrote:
> 
> Ok, I did. My method worked. Yours didn't. The interpolated version does 
> what's expected, it gives the isosurface a smooth function to work with, 
> and the result is something that closely resembles the original.

It seems to do in case of image_maps, the case where i originally had 
problems with it was image_pattern (because it uses GREY_SCALE()).  This 
also makes it clear why using two separate images for low and high byte 
works.

Note the code did not even work with final POV-Ray 3.5, for some reason 
image_pattern is not allowed in pattern functions (it is commented out 
in Parse_PatternFunction()).

Christoph

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