Well, I'm red-faced.  I can't for the life of me figure out what happened.  As a
result of your message I revisited my source and what I thought didn't work is now
working.  Maybe I had a typo that I hadn't noticed before or something, but
everything is working as I wanted it too.

Thanks for your comments.  I really appreciate your taking the time to help me while
I worked through this.

Patrick
pat### [at] hagwarecom

Ron Parker wrote:

> On Thu, 21 Jan 1999 13:13:01 -0500, Patrick Hagerty <pat### [at] hagwarecom> wrote:
> >What I'm trying to do is calculate a color value [I'm using different
> >macros for fRed(), fGreen() and fBlue()] based upon a rotation value
> >(passed as xValue).  I'm using the macros in a statement like this:
> >
> >    "color [rgb<fRed(xAngle), fGreen(xAngle), fBlue(xAngle)>]"
> >
> >Any suggestions anyone can make would be greatly appreciated.
>
> I tried the implementation of TestMacro that you posted, and I
> can use it without problems in the following code:
>
> #declare xangle=11;
> #declare yangle=5;
> #declare zangle=20;
>
> sphere {0,1
>   texture {
>     pigment {
>       gradient y
>       color_map {
>         [0 rgb <TestMacro(xangle),TestMacro(yangle),TestMacro(zangle)>]
>         [1 rgb 1]
>       }
>     }
>   }
> }
>
> Perhaps you could post the exact code of one of your macros, or
> tell us what error you're getting.

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