The snowy rocks are a superposition of 2 RMFs.
The tree: thanks to Andrew Clinton for his splinetree.
The grass: thanks to Gilles Tran for his mesh grass.

The color banding is due to jpg compression, this
scene needs big size to make the glass look lost in
the ice desert.

Rendered with megapov 0.5. Forgot render time but it
was something like 20 hrs for 1152x864 with AA 0.3.

Enjoy

-Hans-

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Attachments:
Download 'summerglass.jpg' (60 KB)

Preview of image 'summerglass.jpg'

Not a bad idea, but I think the tree is too big with relation to the
mountains. half its present size would be better IMHO. Other than that I
like it a lot.


-- 

* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde...                  * http://www.enst.fr/~jberger
*******************************

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"Hans-Detlev Fink" <hdf### [at] pecosnospamde> wrote in message
news:39ACDCA9.4A3C9D5F@pecos.no.spam.de...
> The snowy rocks are a superposition of 2 RMFs.
> The tree: thanks to Andrew Clinton for his splinetree.
> The grass: thanks to Gilles Tran for his mesh grass.
>
> The color banding is due to jpg compression, this
> scene needs big size to make the glass look lost in
> the ice desert.
>
> Rendered with megapov 0.5. Forgot render time but it
> was something like 20 hrs for 1152x864 with AA 0.3.

Very nice  (and similiar in theme to my irtc entry for the "gardens" round
http://www.tomandlu.co.uk/pov/lastgard.jpg )

The scale of the tree in comparison to the scenery looks a little odd. Could
you not have some foreground scenery for the tree-globe to rest on?

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Hans-Detlev Fink schrieb in Nachricht
<39ACDCA9.4A3C9D5F@pecos.no.spam.de>...
>The snowy rocks are a superposition of 2 RMFs.


Could you please explain, what a superposition of 2 RMFs is? I know what a
RMF is, but what is a superposition?
You have some nice snow there - a granite pattern?

I agree, that the scale of the tree is somewhat odd, but I really like the
mountains and the snow.

Marc-Hendrik

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Hans-Detlev Fink wrote:
> 
[...]
> 
> Enjoy
> 

I'm doing !

I really like the mountains, could you make a closeup of some mountain parts,
they really look very different from normal RMF, so i wonder how you did that.  

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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As others have said, the scaling of the tree is odd...it would still 
look big if it was half the size, but probably because you usually don't 
see bell jars that size. I suggest scaling it down to half or a third 
it's size and moving the camera closer and down so it looks up at the 
mountains past the tree.
This assumes that those *are* mountains and not a rocky beach or 
something. They look like mountains, but the distance (when judging from 
the fog) could be just a few yards due to snow...
Actually, that could make an interesting scene. Keep the tree and 
"mountains" at their current scale, and put something else in the scene 
to show that both are actually very miniature, a bonsai tree and 
partially snow-covered volcanic rock. A lost beach ball about twice as 
big as the tree, for example.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

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I knew someone had this idea before! (Though I had never seen
your excellent garden-in-a-box scene before.)

I agree with you (and all others) that the size of the
tree is not exactly fitting with the mountains. I felt
that all the time. I'll do some experiments with
different tree size vs. camera angle. OTOH I don't want
to loose too many details of the tree and grass.

Thanks for your comments anyway.

-Hans-

Tom Melly schrieb:
> 
> "Hans-Detlev Fink" <hdf### [at] pecosnospamde> wrote in message
> news:39ACDCA9.4A3C9D5F@pecos.no.spam.de...
> > The snowy rocks are a superposition of 2 RMFs.
> > The tree: thanks to Andrew Clinton for his splinetree.
> > The grass: thanks to Gilles Tran for his mesh grass.
> >
> > The color banding is due to jpg compression, this
> > scene needs big size to make the glass look lost in
> > the ice desert.
> >
> > Rendered with megapov 0.5. Forgot render time but it
> > was something like 20 hrs for 1152x864 with AA 0.3.
> 
> Very nice  (and similiar in theme to my irtc entry for the "gardens" round
> http://www.tomandlu.co.uk/pov/lastgard.jpg )
> 
> The scale of the tree in comparison to the scenery looks a little odd. Could
> you not have some foreground scenery for the tree-globe to rest on?

Post a reply to this message

Thanks for your comments.

I actually gave some wrong information on the RMF. I apologize.
The scene was left on my HD for abt. 4 weeks and after returning
from holiday I decided to post it asap. Should have recalled
the sources before.

Ok then. The mountains are a superposition of three components:
  - a basic RMF
  - a large scale pigment function using granite
  - a fine scale pigment function using granite that adds
    more fine structure to the surface

The latter two components are modulated by y in order to
increase their weight for higher altitudes.

The following code snipped illustrates this:

  #declare Ridges = function {
    "ridgedmf", <0.5, 2.0, 5.0, 0.3, 20.0>
  }

  #declare Granfunc = function {
    pigment {
      granite
      color_map {
        [0 rgb 0]
        [0.5 rgb 1]
        [1 rgb 0]
      }
    }
  }

  #declare Xshift = 18;
  isosurface {
    function { y -      12*Ridges(0.05*(x+Xshift),0,0.05*z)
                 -  0.10*y*Granfunc(0.5*(x+Xshift),0.5*y,0.5*z)
                 - 0.024*y*Granfunc(1.5*(x+Xshift),1.5*y,1.5*z) }
    contained_by{ box {<-500, -1, -50>, <500, 7, 500>}}
    max_gradient 12
    accuracy 0.000001
    method 2
    texture { T_Ridges_High }
  }


I'll soon render a more detailed view of parts of the mountains.

-Hans-

Christoph Hormann schrieb:
> 
> Hans-Detlev Fink wrote:
> >
> [...]
> >
> > Enjoy
> >
> 
> I'm doing !
> 
> I really like the mountains, could you make a closeup of some mountain parts,
> they really look very different from normal RMF, so i wonder how you did that.
> 
> Christoph
> 
> --
> Christoph Hormann <chr### [at] gmxde>
> Homepage: http://www.schunter.etc.tu-bs.de/~chris/

Post a reply to this message

Thanks very much for that detailed explanations, the RMF parameters are quite
interesting, i have never used such values.  

The isosurface function was a bit irritating first, because i usually do the
scaling and translation in the pigment (this allows to test the components as
textures, which is a lot faster than on the isosurface) but it surely also works
this way.  

I somehow wonder about the low max_gradient, in my last landscape i got values
around 100-200 using eval, but i can't see any errors in your picture.  

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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The rocks and snow look really good, the atmospheric effect
is good aswell.  Nice work. 

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

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