This is really good Tim, as if you didn't know.

Someone said before how the snow seems more like desert sand dunes than
desert snow dunes and I can't get that out of my mind still. It's the tinge
of red still in there that does it, even though it's basically a gray-blue
instead. Maybe what I'm trying to see here is a lot more nearby bluish
places from sky reflection, something like where that spot is far right and
on the horizon. Likewise the igloo itself, a more blue-white on the shadowed
side would seem icey to me. And the shadow/light contrast of the ground
isn't as different as I'd expect to be seeing, which I guess someone had
also said in a previous thread if I remember that right.

Got to ask this then, are you using assumed_gamma 1.0? I try to use that and
always find myself leaving it out or specifying anywhere from >1.0 to < 3.0.
I probably shouldn't but when all else fails I start changing the gamma.
Afraid any change like that would destroy that sky though.

Fellow believer in endless scene tweaks,
Bob

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"Tim Nikias" <tim### [at] gmxde> wrote in message
news:3d53d3fa@news.povray.org...
> How about this I'm not too happy yet, have to toy around
> with the colors a little more, but some comments are always
> helpful, especially from people who have some more insight...
>

Very very nice. Maybe add a bit more shine on the snow.

Gail
--
#macro G(H,S)disc{0z.4pigment{onion color_map{[0rgb<sin(H/pi)cos(S/pi)*(H<6)
cos(S/pi)*(H>6)>*18][.4rgb 0]}}translate<H-5S-3,9>}#end G(3,5)G(2,5.5)G(1,5)
G(.6,4)G(.5,3)G(.6,2)G(1,1)G(2,.5)G(3,.7)G(3.2,1.6)G(3.1,2.5)G(2.2,2.5)G(9,5
)G(8,5.5)G(7,5)G(7,4)G(7.7,3.3)G(8.3,2.7)G(9,2)G(9,1)G(8,.5)G(7,1)///GS

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that is looking nice.  the clouds are what?  media?
-- 
Modeling slave:
"Ballet pour ma fille."
http://www.applesnake.net

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Very nice!

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I love all of these images, they are nice.

Having seen a lot of sun down's at a ski area above the tree line, I'd say
you need a combination of both the red sky and the blue / white snow.

Here's a perfect real life example:

http://www.grandshelters.com/igloo-pics-recent-2.html
for the index

and
http://www.grandshelters.com/images/igloo-night-4-s2.jpg
here's one in daylight that shows the 'rough' area of the snow I was talking
about earlier:

http://www.grandshelters.com/images/denali-4a.jpg

It seems weird that during sunset the snow would be blue, and not red, but
you can see this effect over and over, unless the setting sun is directly
shining on the snow (which it more or less does in your examples).

For example, see:
http://www.backcountryvisions.com/galleries/alaska/denali/pages/3-100.html
and
http://www.backcountryvisions.com/galleries/alaska/denali/pages/3-80.html
and
http://www.backcountryvisions.com/galleries/alaska/southcentral/pages/3-55.h
tml
(although not as much snow).

ON THE OTHER HAND look at this image:

http://www.terraphotography.com/hi/snow_sunset_sm.jpg

This is one where the sun is shining almost directly 'against' the snow and
sure enough, it looks almost like sand.

Maybe snow has some weird reflection property.

After having said all of this, I like ALL of your images.

                  == John ==

"hughes b" <omn### [at] charternet> wrote in message
news:3d54004d@news.povray.org...
> This is really good Tim, as if you didn't know.
>
> Someone said before how the snow seems more like desert sand dunes than
> desert snow dunes and I can't get that out of my mind still. It's the
tinge
> of red still in there that does it, even though it's basically a gray-blue
> instead. Maybe what I'm trying to see here is a lot more nearby bluish
> places from sky reflection, something like where that spot is far right
and
> on the horizon. Likewise the igloo itself, a more blue-white on the
shadowed
> side would seem icey to me. And the shadow/light contrast of the ground
> isn't as different as I'd expect to be seeing, which I guess someone had
> also said in a previous thread if I remember that right.
>
> Got to ask this then, are you using assumed_gamma 1.0? I try to use that
and
> always find myself leaving it out or specifying anywhere from >1.0 to <
3.0.
> I probably shouldn't but when all else fails I start changing the gamma.
> Afraid any change like that would destroy that sky though.
>
> Fellow believer in endless scene tweaks,
> Bob
>
>

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As well you should be!  (despite my making some comments).

                  == John ==

> I'll see, but I'm pretty content with it right now...
> Finally. ;-)

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I'm sure all those links are meant for Tim more than me :-)

That last one shows a kind of icy ground I was just trying to render a few
days ago using media inside a isosurface. It was only one-hundredth as good
as that photo (bad).

The first link has a picture with nearly the same sunlight and shadow angle
shown on Tim's igloo.
http://www.grandshelters.com/images/igloo-sunset-1-s2.jpg
There's a bit of photography versus reality trouble here though, I think in
person you would percieve a lighter bluer shadow, but only the photography
knows that to be true or false.

The 6th link shows a moody kind of photo which would be nice to render too.
What I like about the Iced Land is how the sky wins out over the landscape.
Like you would rather be flying up and away from there rather than going
into that igloo. I'd worry a interesting landscape would ruin that feeling.

Hey, there's always other scenes to do. Maybe Tim should #declare a finish{}
to this one and move on to variations on the theme or something.

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Hi Tim. That image is turning out great! The igloo has a pleasing 'soft'
look to it. Are the clouds media?

This is my first time using the web interface to post to the pov-ray
newsgroups.... I hope it works :)

Tim Nikias wrote:
>How about this I'm not too happy yet, have to toy around
>with the colors a little more, but some comments are always
>helpful, especially from people who have some more insight...
>
>
>
>---
>Tim Nikias
>Homepage: http://www.digitaltwilight.de/no_lights/index.html
>Email: Tim### [at] gmxde
>

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I liked all of them but this is my favorite.

--
light_source{0,1}#macro c(J,a)sphere{0,1pigment{rgb z}scale a translate J+O}
#end#macro B(R,V,O)c(0,4)intersection{c(V,R)difference{c(-z*4x+10)c(-z*4.1x+
10)c(0<7.5,45,5>)}}#end B(12,0z*25)B(8y*4<0,12,50>)          // Batronyx ^"^

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Thanks to everyone, the comments were very
nice and suprising. The clouds are media, the code
can be found in Iced Land#4 I think (or
was it #3?) in one of my replies.

As for the final version, when I've made the
tweaks (incorporating some of the adjustements
several of you mentioned would fit), I'll make a
last post, which I consider "done".

Thanks all,

Tim

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

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