In article <3D3D9D92.C5EB47FF@hotmail.com>,
 Tor Olav Kristensen <tor### [at] hotmailcom> wrote:

> I agree with you that sigs are better without includes, but since f_r() is
> an internal function, I made an exception; because the only "legal" way to
> call such internal functions is via the "functions.inc" file.

math.inc also includes the functions.inc file, and has a shorter name.
Why not use the sqrt() function? sqrt(x*x+y*y) will be the same as 
f_r(x,y,0), and won't need the #include.

light_source{y 2}sphere{20*z#macro p(c)#if(c>1)g(x-2*div(mod(c,49),7)+8,
y-2*mod(c,7)+8,22)*p(div(c,49))#end#end#local g=function{abs(sin(9*sqrt(
x*x+y*y)))*pow(3-min(3,sqrt(x*x+y*y)),2)/z+.9}9pigment{function{p(2399498
)p(3257797)p(5762298)1}}}//M

-- 
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/

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