Chris Huff wrote:
> 
> I was about to post something similar, but I would write it:
> 
> #macro Gradient2(Vector)
>     #local Len = vlength(Vector);
>     #local V = Vector/Len;
>     #local FX = V.x;
>     #local FY = V.y;
>     #local FZ = V.z;
> 
>     function {
>         min(1, max(0, (x*FX + y*FY + z*FZ)/Len))
>         // You sure about the /Len here?
>     }
> #end
> 
> Probably no actual difference in parse time, and render time would be
> the same...it just computes the length and a division fewer
> times(vnormalize() computes the length and divides the vector by that).
> 

Sure, i did not spend time optimizing it :-)

Concerning the /Len: Rune wanted to take the length of the vector into
account.  Without it would be just like the gradient pattern.  

> 
> Interesting how one fairly simple looking feature (the function pattern)
> can replace so many others...
> 

Yes, although it's probably faster if they are hardcoded.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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