"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3b1cc113$1@news.povray.org...
> "Nekar Xenos" <j-p### [at] citywalkcoza> wrote in message
> news:3b1cbc63@news.povray.org...
> > I've always wondered if there wasn't any way of generating a 'procedural
> > heghtfield' and mapping it onto an object. Almost like a normal but using
real
> > height. But, AFAIK you can't map an isosurface to an object so I wouldn't be
> > able to use that.
> >
>
> No, but for simple objects (spheres, etc), you can combine a iso "texture"
with an
> iso "shape".

Ok, that sounds good. Can I do CSG with these iso-objects then? (I guess not -
but it owuld be nice =)

>
> > BTW can isosurfaces use info from procedural textures ie: making an
isosurface
> > with a crackle height/depth? If so, I gues I would more easily get into
> > isosurfaces (UnfortunatelyI just don't have al that time to play around
looking
> > for a formula that looks nice - unless of course someone can give me the
x,y,z
> > formulas for all the procedural textures in Pov ;).
> >
>
> You can use any pattern as an isosurface. There's an image of mine in
binaries.images
> "friday apocalypse" 29/12/2000 that uses crackle for the desert floor. Check
out
> http://www.econym.demon.co.uk/isotut/ and look for the section "pigments as
> functions"

Thank you very much =D


--
/* Nekar Xenos */#local N=<-20,40,100>;#local K=<20,-40,100>;#local R=seed(0);
blob{#while((K-N).x>0)#local X=N;#local N=N+<rand(R),rand(R),1>/3;#local N=(
vlength(N-K)<vlength(X-K)?N:2*X-N);sphere{<N.y,-N.x,N.z>,1,1 scale .02}sphere{N
,1,1 scale.02}sphere{<-N.x-40,N.y,N.z>1,1 scale.01}sphere{<N.x+40,-N.y,N.z>1,1
scale.01 }#end pigment{rgbt 1}interior{media{emission <2,4,5>*5}}hollow}

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