Christopher James Huff <cja### [at] earthlinknet> wrote:
> In article <web.4186a25f26a673e570f077560@news.povray.org>,
>  "brandon" <moc.tibroni@drut backwards> wrote:
>
> > I know PPM's can be used, but they're so space inefficient for my little
> > hard drive.
>
> You're space limited, and using windows BMPs?
> How about putting them in PNG format? IIRC, 16 bit grayscale PNG will
> work in height fields, and will be far smaller than red-green encoded 16
> bit BMP. Or just use TGA...BMP doesn't have any advantages over it.
>
> Anyway, you can use it with any file format. Simply make a pigment
> function using the image in an image_map, then make a scalar function
> using the .hf feature or combine the channels yourself. Then use that
> function in an isosurface, HF mesh, or height field.
>
> #declare PigFn = function {pigment {image_map {...}}};
> #declare HeightFn = function {PigFn(x, y, z).hf};
>
> You could even go further, and have 24 bit height values encoded in all
> three channels. Or combine multiple images in useful ways, or mix them
> with built-in patterns or mathematical functions.
>
> --
> Christopher James Huff <cja### [at] earthlinknet>
> http://home.earthlink.net/~cjameshuff/
> POV-Ray TAG: <chr### [at] tagpovrayorg>
> http://tag.povray.org/


I'll do what you said and use 24 bit! :D

Thank you for all the info!
-Brandon

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