In article <38B8283C.C3189B4D@netvision.net.il>, Eitan Tal 
<eit### [at] netvisionnetil> wrote:

> Povray Ver 3.0 doesn't support #macro, but 3.1 does
> I need to know what it does so I can understand and use some examples
> I cannot run.

A macro is basically a chunk of code that you can call multiple times, 
and pass variables to through the parameters. Like this:
#macro Square(val)
    (val*val)
#end

#declare Amt = Square(3);

You should upgrade to the latest version...


> I don't like any newer versions of povray, they try to sell me all of
> their cdroms, and I hate it.

I don't remember seeing anything about CD's from when I used the Windows 
version, and there isn't anything about them on the Mac version. Can you 
be more specific about what you mean?
And you are missing a lot if the only reason you won't use it is a 
splash-screen...


> is there any difference between ver 3.0 and 3.1?

There are many differences. 3.1g(the latest version) has a lot of 
additional features, like arrays and macros, as well as several bug 
fixes and some speed enhancements(in the sor and I think the lathe 
objects). There were also some pretty major syntax changes: atmosphere 
and halo were replaced with media, and the interior statement now holds 
things like ior. And when you declare a float or vector, you need to put 
a ";" at the end of the line.

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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