How do I set up a function that uses a conditional?  In MegaPOV the syntax
is:

if(x, z*z+x*x, z*z-atan(x))

How does POV 3.5 carry this out?  The tutorials are clueless or 404.

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On Tue, 2 Apr 2002 12:24:46 -0500, "David Wallace" <dar### [at] earthlinknet>
wrote:
> How do I set up a function that uses a conditional?  In MegaPOV the syntax
> is:
> if(x, z*z+x*x, z*z-atan(x))
> How does POV 3.5 carry this out?

select( float , value for float < 0, value for float >= 0 )
select( float , value for float < 0, value for float = 0, value for float > 0)

> The tutorials are clueless or 404.

Have you tried obvious tutorial attached to standard distribution ? Look there
at 6.1.3 chapter :-)

ABX

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