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Can anybody tell me how to go about creating a function for an
IsoSurface that would generate realistic looking choppy water? I'm
looking for a "Stormy Seas" Effect. Is this even possible?
A.D.B
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"Anthony D. Baye" <ban### [at] Rapidnet com> wrote in message
news:3FBC7160.8A231A1A@Rapidnet.com...
> Can anybody tell me how to go about creating a function for an
> IsoSurface that would generate realistic looking choppy water? I'm
> looking for a "Stormy Seas" Effect. Is this even possible?
>
It's certainly possible - play around with f_ridged_mf or f_ridge perhaps? (the
latter would need combining with another function, say one to give a nice wave
effect).
If you hunt around, you'll find a lot of images where iso's have been used to
generate the ocean. A poor example of stormy seas, and using old megapov syntax
iirc, would be:
http://www.tomandlu.co.uk/webres/raytracing/gallery/pics/tmstormc.jpg
(source at http://www.tomandlu.co.uk/webres/raytracing/gallery/tmstormc.zip )
If you want to play with that function, and need help updating to pov 3.5 let me
know.
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Anthony D. Baye het secht:
> Can anybody tell me how to go about creating a function for an
> IsoSurface that would generate realistic looking choppy water? I'm
> looking for a "Stormy Seas" Effect. Is this even possible?
>
>
> A.D.B
Christoph Hormann has some nice stuff about water on his website:
http://www-public.tu-bs.de:8080/~y0013390/pov/water/index.html
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Anthony D. Baye wrote:
> Can anybody tell me how to go about creating a function for an
> IsoSurface that would generate realistic looking choppy water? I'm
> looking for a "Stormy Seas" Effect. Is this even possible?
Is it possible? Shame on you for even asking that! Of course it's
possible :) I'm picturing a way right now.... an idea is forming for
braking waves using a Voronoi function.....
--
Samuel Benge
stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html
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news:3FBC7160.8A231A1A@Rapidnet.com...
> Can anybody tell me how to go about creating a function for an
> IsoSurface that would generate realistic looking choppy water? I'm
> looking for a "Stormy Seas" Effect. Is this even possible?
>
The function in the sea scene below can be modified to make the water more
choppy.
http://www.oyonale.com/ressources/english/sources13.htm
It's only part of the problem though. Realism requires foam and spray and
there's no good (easy, fast, good-looking) solution for that...
G.
--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters
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Samuel Benge wrote:
> Anthony D. Baye wrote:
>
> > Can anybody tell me how to go about creating a function for an
> > IsoSurface that would generate realistic looking choppy water? I'm
> > looking for a "Stormy Seas" Effect. Is this even possible?
>
> Is it possible? Shame on you for even asking that! Of course it's
> possible :) I'm picturing a way right now.... an idea is forming for
> braking waves using a Voronoi function.....
>
Which is what, exactly?
ADB
>
> --
> Samuel Benge
>
> stb### [at] hotmailcom
> See my website@: http://www.goldrush.com/~abenge/Top/index.html
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In article <3FBE93D7.8A46DE38@Rapidnet.com>,
"Anthony D. Baye" <ban### [at] Rapidnetcom> wrote:
> > Is it possible? Shame on you for even asking that! Of course it's
> > possible :) I'm picturing a way right now.... an idea is forming for
> > braking waves using a Voronoi function.....
>
> Which is what, exactly?
It's what the crackle pattern is based on:
http://mathworld.wolfram.com/VoronoiDiagram.html
As for what it has to do with waves, I have no idea...maybe he's
thinking of multifractals, which I have seen used for this purpose.
--
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/
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> Christopher James Huff wrote:
<snip>
> As for what it has to do with waves, I have no idea...maybe he's
> thinking of multifractals, which I have seen used for this purpose.
Alex Kluchikov made a Voronoi-based diagram in which the center of each
cell contained a spiral. I thought perhaps this could be used to
simulate breaking waves, but implementing will be a bit of a chore.
--
Samuel Benge
stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html
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The most used physical desciption of ocean waves is using a number of sine
functions with different frequencies and amplitudes, at random phase
differences. Also, the sine waves are running in different directions. This
is quite complicated matter, too complex to tell here. Best you can do is
find a book on the subject in the library or so.
I must have some pov scene on this, somewhere. See if I can find it.
Note this would give the 'clean' water surface, and you would still have to
add spray and small running waves representing the instantaneous water-wind
contact.
Frans Verbaas
"Anthony D. Baye" <ban### [at] Rapidnetcom> schreef in bericht
news:3FBC7160.8A231A1A@Rapidnet.com...
> Can anybody tell me how to go about creating a function for an
> IsoSurface that would generate realistic looking choppy water? I'm
> looking for a "Stormy Seas" Effect. Is this even possible?
>
>
> A.D.B
>
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