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This is looking *very* nice, much better than the images you sent me a few
days ago :) Perhaps you might consider adding a slightly deeper blue to the
top of the skysphere (if that's what you're using for the blue background),
so that the blue doesn't look completely uniform at the top of the image,
since there is already a lighter horizon area.
They look great though, and very realistic IMO, I think that it's worth the
render time when it comes out looking like that!
--
Lance.
http://come.to/the.zone
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"Tony[B]" wrote:
>
> These are the real clouds I was working on... I posted the one-layer method
> before. That layer was only the top layer high above. This includes the
> lower layer now. The render time shot up slightly, because the bottom layer
> is thicker and requires more intervals (more, as a matter of fact, than I
> used in this render). It took 7h, 36m 48s to render at this size. Is that
> OK? Or is it too slow? You can always remove the top layer and fake it on
> the sky_sphere... I think. (But you'd rather know it's really there,
> wouldn't you? :)
>
Shot up slightly??? From 7 minutes, 11 seconds to 7h, 36m 48s is
_slightly_?
Or am I mistaken?
Sorry to say, but I wouldn't call these clouds realistic. (Unfortunately
I can't put my finger on problem. shape? or colouring? : greenish-blue,
from scattering probably, I don't think that it could be seen in
reality.)
But for artistical pictures, which do not aim for photorealism, these
clouds could be very useful.
Light source seems to be quite close to clouds, as shadows seem to be
too big for given clouds. Or are there clouds, which are not visible?
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Vahur Krouverk wrote:
>Sorry to say, but I wouldn't call these clouds realistic. (Unfortunately
>I can't put my finger on problem. shape? or colouring? : greenish-blue,
>from scattering probably, I don't think that it could be seen in
>reality.)
>
Had the same problem, so while walking to the groceries I looked up a lot.
Tony, it is as if your picture is blurred. Although clouds should look
'fluffy' their boundaries are quite sharp. Maybe a steeper gradient near
the edges of the pattern will make them 'sharper'.
>But for artistical pictures, which do not aim for photorealism, these
>clouds could be very useful.
Agree.
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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Wow Tony, them's nice and fluffy.
--
Cheers
Steve email mailto:ste### [at] zeropps uklinuxnet
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.zeropps.uklinux.net/
or http://start.at/zero-pps
5:19pm up 9 days, 4:40, 3 users, load average: 1.07, 1.06, 1.02
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> This is looking *very* nice, much better than the images you sent me a few
> days ago :)
Excellent. =)
>Perhaps you might consider adding a slightly deeper blue to the
> top of the skysphere (if that's what you're using for the blue
background),
> so that the blue doesn't look completely uniform at the top of the image,
> since there is already a lighter horizon area.
I'll give it a try...
> They look great though, and very realistic IMO, I think that it's worth
the
> render time when it comes out looking like that!
Super! :) I'm very glad you think that.
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> Shot up slightly??? From 7 minutes, 11 seconds to 7h, 36m 48s is
> _slightly_? Or am I mistaken?
Good point. OK: The render time shot up dramatically, when we compare a
300x200 render with 15 intervals to a 720x480 render with 15+40 intervals
(soon to be 15+45 intervals).
> Sorry to say, but I wouldn't call these clouds realistic. (Unfortunately
> I can't put my finger on problem. shape? or colouring? : greenish-blue,
> from scattering probably, I don't think that it could be seen in
> reality.)
Hmm... I could adjust the color curve in Photoshop after rendering...
> But for artistical pictures, which do not aim for photorealism, these
> clouds could be very useful.
OK, at least I've acheived something.
> Light source seems to be quite close to clouds, as shadows seem to be
> too big for given clouds. Or are there clouds, which are not visible?
The clouds are contained in 2 individual boxes. The first one goes
rom -<1000000,0,1000000> to <1000000,3000,1000000>, and is 4500 units above
the ground plane. The second one goes from -<1000000,0,1000000> to
<1000000,2000,1000000>, and is 15000 units above the ground plane. The
light_source is at y*10000000, and the camera is at <10000,400,-30000>. I
moved it up that high in order to see if the shadows were showing up,
something which when closer to the plane is hard to confirm. What do you
suggest?
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> Had the same problem, so while walking to the groceries I looked up a lot.
> Tony, it is as if your picture is blurred. Although clouds should look
> 'fluffy' their boundaries are quite sharp. Maybe a steeper gradient near
> the edges of the pattern will make them 'sharper'.
I can do that. I'll adjust this and re-render... but mind you: there are
"generic" realistic clouds, and there are "real" realistic clouds. The first
ones are what we would identify in a render as "realistic", and the second
ones are the ones we might happen to see in real life, and complain about
how "fake" they look. :)
> >But for artistical pictures, which do not aim for photorealism, these
> >clouds could be very useful.
>
> Agreed.
Cool. :)
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> Wow Tony, them's nice and fluffy.
Yup. Ah just aim tuh please y'all! :)
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"Tony[B]" wrote:
>
> OK, at least I've acheived something.
>
That's for sure! I've yet to achieve such results...
> > Light source seems to be quite close to clouds, as shadows seem to be
> > too big for given clouds. Or are there clouds, which are not visible?
>
> The clouds are contained in 2 individual boxes. The first one goes
> rom -<1000000,0,1000000> to <1000000,3000,1000000>, and is 4500 units above
> the ground plane. The second one goes from -<1000000,0,1000000> to
> <1000000,2000,1000000>, and is 15000 units above the ground plane. The
> light_source is at y*10000000, and the camera is at <10000,400,-30000>. I
> moved it up that high in order to see if the shadows were showing up,
> something which when closer to the plane is hard to confirm. What do you
> suggest?
Actually these shadows seem to be too dark, but this is probably result
from one light source. Adding other light source or using radiosity
(hmm, maybe not, considering current rendering time) could improve this.
And now when I think about it, it seems to me, like this scene setup
(camera in such high position) makes it somewhat unrealistic. If camera
is set in "normal" height, then this scene could look more realistic, I
guess. Or perhaps downscaling of clouds will help?
For displaying shadows one can use heightfield and place camera on top
of hill, I guess. Too bad, that rendering time is so big, as it does not
allow to experiment very much...
HTH,
Vahur
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> That's for sure! I've yet to achieve such results...
<big grin> <proud look at my clouds>
> Actually these shadows seem to be too dark, but this is probably result
> from one light source.
I have 2 light_sources, actually, coming from the same spot, one has an
intensity of 1.3, and affects the media (media_attenuation on,
media_interaction on), the other has an intensity of 0.45 and does not
affect the media (media_attenuation off, media_interaction off).
> And now when I think about it, it seems to me, like this scene setup
> (camera in such high position) makes it somewhat unrealistic.
As I said before, I only moved it up that high to see if there were any
shadows or not. This is not mean to be a scene, or to develop into anything.
This was only done to make clouds. I will now copy-paste them into other
scenes, and adapt them as needed.
> Too bad that rendering time is so big, as it does not
> allow to experiment very much...
True, but I'm patient, and have other things to do besides sittig here and
waiting for it to render. :)
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