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"Mathuin" <mat### [at] gmailcom> wrote:
> I used to think I knew more about POV-Ray than I apparently do. Either that, or
> this new project is introducing me to new corners of SDL and other interesting
> things.
>
> I find myself making sets of user-defined float functions because I can't figure
> out how to make a user-defined vector function. I end up with stuff like this:
>
> #declare LocX = function(x) { x + 1 }
> #declare LocY = function(y) { y * 2 }
> #declare LocZ = function(z) { z / 3 }
>
> I'd *much* rather have this:
>
> #declare LocXYZ = function(x, y, z) { <x + 1, y * 2, z / 3> }
>
> Any chance there's an easy way to do this? Will I have to use a macro?
A macro is best suited for this:
#macro LocXYZ (x0,y0,z0)
#local x1=x0+1;
#local y1=y0*2;
#local z1=z0/3;
<x1,y1,z1>
#end
evaluate using:
#declare A=LocXYZ(1,2,3);
-tgq
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