Ok, then I understand :-)
I must say I was a bit slow when reading Gilles mail.(A bit, I had a pice
 of
coded that by "acccident" looped n^3*6 times while parse instead of n^3..
.)
*humming*
I must say that I didn't get the referring until you explained. I'm _real
ly_
slow.. *duh*


Ph Gibone wrote:
> 

> Speaking for Gilles (I must be mad these clothes are too big for me, th
ey
> don't fit, and I can't find a good scaling macro...)
> 

> Well, I really don't believe Gilles doesn't know how to scale a tree, b
ut he
> says that you can have the need for two trees of different heigh but wi
th
> the same leaves, if they are both scaled down to the unit box, you'll s
pend
> you life trying to find the good scaling factor to get them having the 
same
> leaves (same problem with the texture... ) the different trees *needs* 
to be
> consistent, the don't need to be the same size)
> 

> Philippe
> 


> >
> >Sorry to disagree again, but no, It can be done with a good uniform sc
aling
> of
> >the object so it keeps the curent scale of the objects. This should be

> quite
> >easy to implement.
> >something like this is in my mind..
> >
> >translate -1*MinExtent
> >//that should center the object with one corner on <0,0,0>
> >
> >Then there should be a scaling, something like:
> >scale 1/(MaxExtent-MinExtent)
> >...
> >in my mind the tree will keep it's scale in sizes, but be downscaled t
o
> fit...
> >perhaps I'm to tired to think straight, but then, what good is straigh
t?
> >(Go chaos, go)
> >
> >
> >
> >Gilles Tran wrote:
> >>
> >> Hmm. It could be useful in some cases, and a little cumbersome in ot
hers.
> >> Personnally I prefer having the trees not scaled and adjust the size

> using the
> >> dummy bounding box: for instance, if you generate several trees just
 but
> changing
> >> the random seed or the recursion level, you'll get trees of differen
t
> sizes but
> >> with a similar scale. If the trees were post-scaled, you'd get even-
sized
> trees but
> >> with actually different scales, so you would have to make trial-and-
error
> scaling
> >> to have trees consistent with each other. There's also the fact that
 the
> trees
> >> don't exactly fit in a box. Some of them crawl, some shoot up, so th
ere's
> no ideal
> >> unit-size bounding box. In fact people who provide really good 3D tr
ees
> also
> >> provide the "real life" bounding box : see
> http://iris8.cirad.fr/index.htm and look
> >> at the plant catalogue.
> >> Now if you really want it, I can add it as an option.
> >> Gilles
> >>
> >> Spider wrote:
> >>
> >> > hmm, this probably doesn't fit in this group, but should be in a
> separate mail
> >> > to Giles. but then, hehe.
> >> >
> >> > To ease it all up with object placing and scalability, can you mak
e the
> trees
> >> > all downscaled(upscaled) to a bounding_box{<0,0,0>,<10,10,10>}. Th
is
> would help
> >> > a lot, and would also remove the need to recalculate the tree to f
it.
> >> >
> >> > I have an automated rescaler #macro here somewhere, if you are
> interested...
> >> >
> >> > Lewis wrote:
> >> > >
> >> > > I had another weird idea:
> >> > > Let's compile a library of trees, made with Giles macro. Using a

> macro
> >> > > to generate random trees, each one starts it with a different se
ed
> and
> >> > > sends in the results (the include files). It could be very usefu
l.
> Maybe
> >> > > someone will need a couple of trees sometime. Instead of parsing
,
> say,
> >> > > 100ds of them, he will just download them.
> >> > > Anyone with me? If there will be enough enthusiasm I'll set up a
 web
> >> > > site or somethin'.
> >> >
> >> > --
> >> > //Spider
> >> >         [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
> >> > What I can do and what I could do, I just don't know anymore
> >> >                 "Marian"
> >> >         By: "Sisters Of Mercy"
> >
> >--
> >//Spider
> >        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
> >What I can do and what I could do, I just don't know anymore
> >                "Marian"
> >        By: "Sisters Of Mercy"

-- 

//Spider
        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
                "Marian"
        By: "Sisters Of Mercy"

Post a reply to this message