Hello,
i'm planing to make little un-typical "gift" for someone :P one of it's 
elements would be an rose. Any suggestions how to make it ?

Currently i'm planing :

spheres-sweep as main part, thene cones (or some more comples shapes) 
putted along main part as spikes.
Biggest proelm is with top of flower, maybe isosurface ? Any suggestions 
what formula(s) will be usefull ?

-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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> spheres-sweep as main part, thene cones (or some more comples shapes)
> putted along main part as spikes.
> Biggest proelm is with top of flower, maybe isosurface ? Any suggestions
> what formula(s) will be usefull ?


Your best bet is probably something like a triangle mesh or something else
that can be flat; and you should probably model it in another problem, since
rose petals are not easily modelled with primitives, especially through
scripting.

In a pinch, I imagine one could make decent tulip petals via spheres using
clipped_by...

 - Slime
[ http://www.slimeland.com/ ]

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Or some gerberas using meshes. These were
modelled in POV, using splines (my own
POV-script implemented version of bezier-splines),
sine waves overimposed on the meshes...

A little tiny bit difficult, but the gerbera was an
easy model. I've thought about modelling a rose
someday, but not now. Haven't got the time...

Look on my homepage, under "Past Projects". You
might find some clues on how to tackle your problem.

Regards,
Tim

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

>
> Your best bet is probably something like a triangle mesh or something else
> that can be flat; and you should probably model it in another problem,
since
> rose petals are not easily modelled with primitives, especially through
> scripting.
>
> In a pinch, I imagine one could make decent tulip petals via spheres using
> clipped_by...

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I suggest you to use Spatch, or Hamapath. they are freeware that enable you
to create bicubic patch very easily. I dont remember where you can download
the program, but I think I could find an archive on my HD.

Chaps.

"Rafal 'Raf256' Maj" <raf### [at] raf256com> wrote in message
news:Xns### [at] 204213191226...
> Hello,
> i'm planing to make little un-typical "gift" for someone :P one of it's
> elements would be an rose. Any suggestions how to make it ?
>
> Currently i'm planing :
>
> spheres-sweep as main part, thene cones (or some more comples shapes)
> putted along main part as spikes.
> Biggest proelm is with top of flower, maybe isosurface ? Any suggestions
> what formula(s) will be usefull ?
>
> --
> #macro
g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
> pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local
l=mod(c,100
> );g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end
light_source{
> y 2}sphere{z*20
9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

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In article <3dbd20e5$1@news.povray.org>, cha### [at] yahoocom says...
> I suggest you to use Spatch, or Hamapath. they are freeware that enable you
> to create bicubic patch very easily. I dont remember where you can download
> the program, but I think I could find an archive on my HD.

Hamapatch - http://www.geocities.com/Tokyo/Ginza/6625/soft10.html

Jamie.

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3dbd20e5$1@news.povray.org...
> I suggest you to use Spatch, or Hamapath. they are freeware that enable
you
> to create bicubic patch very easily. I dont remember where you can
download
> the program, but I think I could find an archive on my HD.

These links lead you to the programs download (and tutorials, and objects,
links...):
spatch: http://www.geocities.com/getspatch/index.html
hamapatch: http://www.geocities.com/hamapatch/program/index.html

This one works with meshes, but it's very useful (and also free):
anim8or: http://www.anim8or.com/

A rose model in spatch format (you can use spatch or hamapatch to open it):
http://www.geekspace.com/~rozzin/graphics/3-D/sPatch/rose/

Hope this helps

Txemi Jendrix
http://www.txemijendrix.com

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