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As we get closer to the wire, it's possible my questions are getting dumber,
BUT:
1) I don't see a sign () function: did we let a whole new release slip by
without this addition?
2) I tried to use a conditional expression in a parametric but it didn't
work. They work as declared variables but not as an expression in a
parametric
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From: Thorsten Froehlich
Subject: Re: Sign()? Conditional expression?
Date: 24 May 2002 08:37:10
Message: <3cee33f6@news.povray.org>
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> 1) I don't see a sign () function: did we let a whole new release slip by
> without this addition?
For ___example___:
#macro sign(foo)
select(foo, -1, 1)
#macro
#macro sign(foo)
#if(foo >= 0)
1
#else
-1
#end
#end
> 2) I tried to use a conditional expression in a parametric but it didn't
> work. They work as declared variables but not as an expression in a
> parametric
You have to be careful when using them. they don't work like they did in
MegaPOV where they are not real conditionals but simply special versions of
min and max.
Thorsten
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From: Christoph Hormann
Subject: Re: Sign()? Conditional expression?
Date: 24 May 2002 08:53:07
Message: <3CEE37B3.B08CA36D@gmx.de>
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"Greg M. Johnson" wrote:
>
> As we get closer to the wire, it's possible my questions are getting dumber,
> BUT:
>
> 1) I don't see a sign () function: did we let a whole new release slip by
> without this addition?
from math.inc:
#declare sgn = function (V) {select(V,-1, 0, 1)}
Christoph
--
POV-Ray tutorials, IsoWood include,
TransSkin and more: http://www.tu-bs.de/~y0013390/
Last updated 05 May. 2002 _____./\/^>_*_<^\/\.______
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doh?
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