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Wonderful. How many objects are we seeing--I'd be even more impressed if it
were only one!
Also, doesn't this just blow away the concept of heightfields--wouldn't it
be impossible to make a non-hideous flythrough if these were mere
heightfields and one lacked a Cray?
Bob Hughes wrote:
> Since the animation was so garbled I figure a nice still image should be
> uploaded.
>
> Bob
> --
> omniVerse http://users.aol.com/persistenceofv/all.htm
>
> [Image]
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Bob Hughes wrote:
>
[...]
> You guessed right, it's ice covered lakes at the beginning of the current
> animation I'm doing, then the snow and ice melts off during it in a
> unrealistic sort of way. I've never seen time-lapse done during a flyover.
How about employing the RMF function for the ice too, so that the ice is melting
in the middle first and later on the coast.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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From: Rick [Kitty5]
Subject: Re: Flight over mountains and lakes [~53KB Jpg]
Date: 27 Jul 2000 10:19:55
Message: <3980450b$1@news.povray.org>
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> Since the animation was so garbled I figure a nice still image should be
> uploaded.
you figured right :)
Rick
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In article <397fcd4c@news.povray.org>, "Bob Hughes"
<per### [at] aolcom?subject=PoV-News:> wrote:
> Since the animation was so garbled I figure a nice still image should be
> uploaded.
Looks like a recently terraformed low-gravity planet...I don't think
mountains like that would survive long in an atmosphere.
Great job...have you tried making bare rock on near-vertical surfaces?
It looks like a lot of the snow is clinging to very steep slopes.
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
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From: Bob Hughes
Subject: Re: Flight over mountains and lakes [~53KB Jpg]
Date: 27 Jul 2000 13:49:41
Message: <39807635@news.povray.org>
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"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote in
message news:39803165.D051FC90@schunter.etc.tu-bs.de...
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| How about employing the RMF function for the ice too, so that the ice is
melting
| in the middle first and later on the coast.
Nice idea, if I could do it. I'll never know unless I try I suppose, but in
this particular rendering the water is all a single plane. Guess I might
negate the same mountain isosurface somehow to get the individual lakes
where they already stand. Could be a challenge for me.
The RMF isn't also usable as a pigment, is it?
Bob
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From: Bob Hughes
Subject: Re: Flight over mountains and lakes [~53KB Jpg]
Date: 27 Jul 2000 13:50:53
Message: <3980767d@news.povray.org>
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"Bill DeWitt" <the### [at] earthlinknet> wrote in message
news:39802705@news.povray.org...
| Bob, see my question about Slope dependent texturing in p.g.
Have done so.
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Bob Hughes wrote:
>
> Nice idea, if I could do it. I'll never know unless I try I suppose, but in
> this particular rendering the water is all a single plane. Guess I might
> negate the same mountain isosurface somehow to get the individual lakes
> where they already stand. Could be a challenge for me.
> The RMF isn't also usable as a pigment, is it?
>
> Bob
Sure it is, you can use every function as a pigment, there are some of the
megapov-sample scenes using that, like math_pigm.pov in the isosurface dir.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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From: Bob Hughes
Subject: Re: Flight over mountains and lakes [~53KB Jpg]
Date: 27 Jul 2000 14:02:13
Message: <39807925@news.povray.org>
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"Greg M. Johnson" <gre### [at] my-dejanewscom> wrote in message
news:39802CA6.469A2F0F@my-dejanews.com...
| Wonderful. How many objects are we seeing--I'd be even more impressed if
it
| were only one!
|
| Also, doesn't this just blow away the concept of heightfields--wouldn't it
| be impossible to make a non-hideous flythrough if these were mere
| heightfields and one lacked a Cray?
You're right on the mark with that comment Greg. The circumventing of a
need for smooth height fields to do this sort of thing may make the HF
obsolete, dare I say. The one drawback is the need to get a fine enough
'accuracy' apparently, among other things I might not know about, which can
slow things up. The 'eval' and 'method 2' are superb additions.
Oh, yeah. Yes, just the isosurface with ridged multifractal function and a
water plane, some ground fog, sky_sphere too. A little detailed info: 24
by 24 unit square isosurface used with the camera traveling about 3 units at
a height of 0.41*y average above the water level.
Bob
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In article <39807635@news.povray.org>, "Bob Hughes"
<per### [at] aolcom?subject=PoV-News:> wrote:
> Nice idea, if I could do it. I'll never know unless I try I suppose,
> but in this particular rendering the water is all a single plane.
> Guess I might negate the same mountain isosurface somehow to get the
> individual lakes where they already stand. Could be a challenge for
> me.
Just use the RMF function as a function pattern to control the
melting...you won't even have to change your plane, just the texture of
the water.
> The RMF isn't also usable as a pigment, is it?
Any isosurface function is useable as a pattern, and any pigment can be
used in an isosurface function.
--
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/
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From: Bob Hughes
Subject: Re: Flight over mountains and lakes [~53KB Jpg]
Date: 27 Jul 2000 14:09:29
Message: <39807ad9@news.povray.org>
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"Chris Huff" <chr### [at] maccom> wrote in message
news:chrishuff-E2F56D.10205127072000@news.povray.org...
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| Looks like a recently terraformed low-gravity planet...I don't think
| mountains like that would survive long in an atmosphere.
I've seen similarly thin ridges of mountains or hills like this before in
photos or television, but maybe not quite as thin as these turned out. I
went with a bit of a spikey look to it all.
| Great job...have you tried making bare rock on near-vertical surfaces?
| It looks like a lot of the snow is clinging to very steep slopes.
The first animations I made were like that, this render was afterward when I
changed to a more heavily snowed winter time shifting to melting,
evaporating rather, summer time appearance. Being all texture and no
substance it is of course physically incorrect anyhow. I might do a change
of the isosurface to go along with.
Bob
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