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I'm currently experimenting a little to put some water on
Mars. I'm not sure if it looks realistic, so ideas are welcome.
The water has an interior with exponential fading.
The (nearly) same image without water can be found at
http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/mars/index.html#3craters
Rendering time for 1200x600 +A0.2 was 330 minutes on AthlonXP 1.4GHz.
Memory consumption was 50Mb.
Wolfgang
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Attachments:
Download '3craters-ese-2-1200b.jpg' (77 KB)
Preview of image '3craters-ese-2-1200b.jpg'
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"Wolfgang Wieser" <wwi### [at] gmx de> wrote in message
news:401c3c53@news.povray.org...
> I'm currently experimenting a little to put some water on
> Mars. I'm not sure if it looks realistic, so ideas are welcome.
>
> The water has an interior with exponential fading.
>
> The (nearly) same image without water can be found at
>
http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/mars/index.html#3craters
I like. I'll get my swimsuit.
Looks pretty good, as is, actually. Something which could help it would be
flows from higher to lower elevations, but probably very difficult to do, if
not impossible. And would be a good idea to try and limit parts from getting
water too.
Of course, one thing a planet with water needs is plantlife in at least some
parts. Granted, there could still be somewhat lifeless regions caused by
salty bodies of water and such, but not always (well, lots of unknowns). So
maybe you could add a slope pigment to get regions looking like a kind of
foliage is covering parts of the ground or along the embankments.
BTW, I didn't get back to one of your previous messages where you told of
using a custom-made convertor of the MOLA img files. So thanks for telling
about that. I was still looking all over for more info about the resolutions
of the elevation data and I didn't get anywhere with that so I gave up
trying.
Any chance you'll be making your conversion tool available? If so I, for
one, have my hand out to await it. I'll try not to be pushy though. ;-)
Bob
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Cooool!
Now I understand where is gone all the warter of Mars: with all these holes
it couldn't stay at the surface;-)
Marc
401c3c53@news.povray.org...
> I'm currently experimenting a little to put some water on
Post a reply to this message
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401c9259$1@news.povray.org...
> Of course, one thing a planet with water needs is plantlife in at least
some
> parts. Granted, there could still be somewhat lifeless regions caused by
> salty bodies of water and such, but not always (well, lots of unknowns).
So
> maybe you could add a slope pigment to get regions looking like a kind of
> foliage is covering parts of the ground or along the embankments.
>
Hi,
I wasn't born yet but it seems that, on earth, it took very long time to
life to conqueer emerged lands after it appeared in oceans.
It should have no chance to do so in the time liquid water was at the
surface of mars.
Marc
Post a reply to this message
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Hughes, B. wrote:
> Looks pretty good, as is, actually. Something which could help it would be
> flows from higher to lower elevations, but probably very difficult to do,
> if not impossible.
>
Yes... actually, the water level is not at the same height all over
the image but real flow from higher to lower would require a somewhat
different approach than I am doing right now.
> And would be a good idea to try and limit parts from
> getting water too.
>
In the right back, correct. I did not notice that before the final
render. And a 5 hour render is not repeated quickly...
> Of course, one thing a planet with water needs is plantlife in at least
> some parts. Granted, there could still be somewhat lifeless regions caused
> by salty bodies of water and such, but not always (well, lots of
> unknowns). So maybe you could add a slope pigment to get regions looking
> like a kind of foliage is covering parts of the ground or along the
> embankments.
>
Allright, there is no limit on the amount of time one could spend
on making Mars look like a planet with plenty of life.
But for now, I just wanted to get some realistically-looking water.
> BTW, I didn't get back to one of your previous messages where you told of
> using a custom-made convertor of the MOLA img files. So thanks for telling
> about that. I was still looking all over for more info about the
> resolutions of the elevation data and I didn't get anywhere with that so I
> gave up trying.
>
> Any chance you'll be making your conversion tool available? If so I, for
> one, have my hand out to await it. I'll try not to be pushy though. ;-)
>
You will need libz, libpng, libbz2 (on any recent linux distro),
hlib (on my homepage) and Qt-3.x (only free for linux).
Then, I could send you hlib-compression-addon, QTXlib and my conversion
utility. Compile all that using gcc-3.x on a linux box and there you go.
(The conversion utility has graphical output. When editing the source,
you may come along without Qt and QTXlib.)
In case anybody (possibly you) is interested in that I may make it
available on my home page in a week or so (there is an exam this
week...).
Wolfgang
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news:401cd9fc@news.povray.org...
> In case anybody (possibly you) is interested in that I may make it
> available on my home page in a week or so (there is an exam this
> week...).
I'm interrested :-)
Thank you.
--
ZeSly
http://perso.wanadoo.fr/zesly/
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"Marc Jacquier" <jac### [at] wanadoofr> wrote in message
news:401cc9d3$1@news.povray.org...
>
> 401c9259$1@news.povray.org...
> > Of course, one thing a planet with water needs is plantlife
>
> It should have no chance to do so in the time liquid water was at the
> surface of mars.
Always debateable but, yes, I think you have a good point there. I used the
word plantlife in a very broad sense, including things like algae and even
protist slimey stuff someplace. :-)
This brings up something about the coloration of the water used here in
Wolfgang's rendering. My first thought was of water-borne life because of
the greenish tinge. A large manmade lake nearby here has a sometimes vivid
green coloring in certain places, brownish in others, yet overall tends to
be green hues. I don't know of any water having green colorations without
plantlife within it so its natural to think of it as life-bearing.
That might be something to change then to reflect a more sterile water on an
early Mars.
Bob H.
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Ahhh, linux.... something I'm not running on my computers here. Guess I'll
pass then, thanks anyhow for the offer!
--
Bob H.
http://www.3digitaleyes.com
"Wolfgang Wieser" <wwi### [at] gmxde> wrote in message
news:401cd9fc@news.povray.org...
> >
> You will need libz, libpng, libbz2 (on any recent linux distro),
> hlib (on my homepage) and Qt-3.x (only free for linux).
> Then, I could send you hlib-compression-addon, QTXlib and my conversion
> utility. Compile all that using gcc-3.x on a linux box and there you go.
> (The conversion utility has graphical output. When editing the source,
> you may come along without Qt and QTXlib.)
>
> In case anybody (possibly you) is interested in that I may make it
> available on my home page in a week or so (there is an exam this
> week...).
Post a reply to this message
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Among other things, Hughes, B. wrote:
> I don't know of any water having green colorations without
> plantlife within it so its natural to think of it as life-bearing.
Copper and iron salts can be green too
(<http://www.wqa.org/sitelogic.cfm?ID=346>).
--
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby
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Oh in water, life should be easier to born than on land ( less cosmic rays,
more even temperature, no need of rain, no gravity to overcome, ect...) ,
so life could exist in seas hundreds millions years before on dry land.
Marc
401d7942$1@news.povray.org...
> "Marc Jacquier" <jac### [at] wanadoofr> wrote in message
> news:401cc9d3$1@news.povray.org...
> >
> > 401c9259$1@news.povray.org...
> > > Of course, one thing a planet with water needs is plantlife
> >
> > It should have no chance to do so in the time liquid water was at the
> > surface of mars.
>
> Always debateable but, yes, I think you have a good point there. I used
the
> word plantlife in a very broad sense, including things like algae and even
> protist slimey stuff someplace. :-)
>
> This brings up something about the coloration of the water used here in
> Wolfgang's rendering. My first thought was of water-borne life because of
> the greenish tinge. A large manmade lake nearby here has a sometimes vivid
> green coloring in certain places, brownish in others, yet overall tends to
> be green hues. I don't know of any water having green colorations without
> plantlife within it so its natural to think of it as life-bearing.
>
> That might be something to change then to reflect a more sterile water on
an
> early Mars.
>
> Bob H.
>
>
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