Tim Attwood wrote:
> I think you want something like Reorient_Trans
> from transforms.inc
> 
> //+kff360
> #include "transforms.inc"
> #declare P = <2*sin(clock*60),3,4*sin(clock*36)>;
> sphere {P,0.05
>    pigment {Red}
> }
> cone {<0,0,0>,0.05,<0,0,0.5>,0
>    pigment {Cyan}
>    Reorient_Trans(z,vnormalize(P))
> } 

There's no need to normalize the vectors
going into the Reorient_Trans() macro.

-- 
Tor Olav
http://subcube.com

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