> Wlodzimierz ABX Skiba wrote:
> >
> > [...]
> >
> > this way you get another level of abstract but instead of 4 dbl you must
> > remember pointer to parent - is it worth ?
>
> Probably not in this case, but for a complex CSG it could be useful, just
> imagine a lot of macro generated trees...

I know adventages of this and even curently play with such macros but I think
(it's only personal opinion) that this support in current state of povray is not
worth at level of every object but perhaps it is worth at level of CSG engine.

> I know this is probably quite difficult to implement, but NTL it would
> offer interesting possibilities.


I just had idea that there could be another kind of object named Clone which
remember only transform and base object. Well... I'll try and check this.
Perhaps whole forest could fit into cache of processor ;)

--
#macro Sig(A,B,X)_(A,B)_(B,X)_(X,A)#end#macro _(A,B)cylinder{<A.x,A.y,3>,<B.u,
B.v,3>.1,9}#end global_settings{max_trace_level 9}light_source{0 1}camera{up y
*4right-3*x}blob{_(<3,1>,<1,-5>)_(<2,-2>,<4,-2>)Sig(x,<-1,1.5>,<1,3>)_(z-1,z-4
)pigment{rgb 1}}box{-3 3pigment{rgb 0}finish{reflection 1}hollow} // POV-Ray31

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