So as you know, I am stumbling through the isosurface qualities of POV, 
when I came across a site where someone used an identifier fn_function 
to make a pigment modifier (bozo in this case) apply to both a height 
field and an isosurface.  Can anyone either explain this (as he didnt 
really) or point me to a place which does?  He used this as a way to 
make some pretty nifty landscapes, so if anyone knows of a site which 
shows some isosurface landscaping tricks, that would be awesome too.  
Thanks a lot, Matt

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In article <mat### [at] netplexaussieorg>,
 Matthew Pace <mat### [at] lycoscom> wrote:

> So as you know, I am stumbling through the isosurface qualities of POV, 
> when I came across a site where someone used an identifier fn_function 
> to make a pigment modifier (bozo in this case) apply to both a height 
> field and an isosurface.  Can anyone either explain this (as he didnt 
> really) or point me to a place which does?  He used this as a way to 
> make some pretty nifty landscapes, so if anyone knows of a site which 
> shows some isosurface landscaping tricks, that would be awesome too.  

Those are simply pattern functions defined in functions.inc. As 
expected, they are documented in the functions.inc documentation. You 
can use the same syntax to make your own versions.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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Wasn't it Matthew Pace who wrote:
>So as you know, I am stumbling through the isosurface qualities of POV, 
>when I came across a site where someone used an identifier fn_function 
>to make a pigment modifier (bozo in this case) apply to both a height 
>field and an isosurface.  Can anyone either explain this (as he didnt 
>really) or point me to a place which does?  He used this as a way to 
>make some pretty nifty landscapes, so if anyone knows of a site which 
>shows some isosurface landscaping tricks, that would be awesome too.  
>Thanks a lot, Matt

There's a section in my Isosurface Tutorial that looks at the difference
between using a function to generate a heightfield and using it to
generate an isosurface.

http://www.econym.demon.co.uk/IsoTut/patterns.htm#hf

In this case I used function{ pattern{ leopard... }} but I could have
used function{f_bozo(x,0,z)}.

-- 
Mike Williams
Gentleman of Leisure

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Mike Williams <nos### [at] econymdemoncouk> wrote in 
news:mWcKaOAikxr$EwJy@econym.demon.co.uk:

...
> There's a section in my Isosurface Tutorial that looks at the difference
> between using a function to generate a heightfield and using it to
> generate an isosurface.
> 
> http://www.econym.demon.co.uk/IsoTut/patterns.htm#hf


This one works:

http://www.econym.demon.co.uk/isotut/patterns.htm#hf


You can also find an example of a function based height-
field within the source files in this post of mine:

http://news.povray.org/povray.binaries.scene-files/33557

(Source code for "Isomountains" posted by me 26. Oct to 
povray.binaries.scene-files)


Tor Olav

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In article <mat### [at] netplexaussieorg>,
 Matthew Pace <mat### [at] lycoscom> wrote:

> So as you know, I am stumbling through the isosurface qualities of POV, 
> when I came across a site where someone used an identifier fn_function 
> to make a pigment modifier (bozo in this case) apply to both a height 
> field and an isosurface.  Can anyone either explain this (as he didnt 
> really) or point me to a place which does?  He used this as a way to 
> make some pretty nifty landscapes, so if anyone knows of a site which 
> shows some isosurface landscaping tricks, that would be awesome too.  
> Thanks a lot, Matt

Thanks a lot guys, you are awesome.  Those all helped a lot!

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