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With all of these fractals flying around, I decided to dig through a
book I had lying around. There's an interesting passage in the book,
where it is discussing these figures, called 3d dragon curves, and I
quote,
"..he uses IBM's computer resources to plot a million or more points in
three dimensions to generate a three-dimensional dragon curve. He then
runs a ray tracing program which determines the illumination of every
point and the positioning of it on a two-dimensional display. Needless
to say, this is beyond the capability of our personal compters."
The book is a little out of date, apparently.. (published in 1990) I
didn't quite use a million points, but I did use 1 out of every 5 of my
288000 calculated points. 57600 blobs still makes a pretty funky image,
tho..
-Alex V.
Post a reply to this message
Attachments:
Download 'splash.jpg' (25 KB)
Download 'fount.jpg' (14 KB)
Download 'apple.jpg' (27 KB)
Preview of image 'splash.jpg'
Preview of image 'fount.jpg'
Preview of image 'apple.jpg'
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Funky! Why is it called Dragon Fractals?
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I guess you have serious problems to answer to the right posting! :-)
You can cancel the ones that have gone wrong with
EDIT -> cancel message in your netscape menu.
Have a nice day,
Marc
--
Marc Schimmler
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The problem is that I only notice AFTER posting them!
Marc Schimmler wrote:
>
> I guess you have serious problems to answer to the right posting! :-)
>
> You can cancel the ones that have gone wrong with
>
> EDIT -> cancel message in your netscape menu.
>
> Have a nice day,
>
> Marc
> --
> Marc Schimmler
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Lewis wrote:
>
> The problem is that I only notice AFTER posting them!
That's what it is for!
To cancel your post after posting! After you've seen it is wrong!
Believe me, I had to do this too! ;-)
Marc
--
Marc Schimmler
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Thanks! But what if someone tries to cancel my messages?
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Lewis wrote:
>
> Thanks! But what if someone tries to cancel my messages?
This is not possible! I would have been tempted to do that with -@--
posts! :-)
Only the poster can cancel it. And only from the same address if I
remember right.
Marc
--
Marc Schimmler
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Yep, I have done many a Edit/Cancel Message in Netscape Communicator once
I notice errors after it posts. I just do the cancel soon as I can while
looking at the post.
Marc Schimmler wrote:
>
> Lewis wrote:
> >
> > Thanks! But what if someone tries to cancel my messages?
>
> This is not possible! I would have been tempted to do that with -@--
> posts! :-)
>
> Only the poster can cancel it. And only from the same address if I
> remember right.
>
> Marc
> --
> Marc Schimmler
--
omniVERSE: beyond the universe
http://members.aol.com/inversez/homepage.htm
mailto:inv### [at] aol com?Subject=PoV-News
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Hardly seems a fractal to me. Reminds me somewhat of 3D plotting using 2D
programs.
Alex Vandiver wrote:
>
> With all of these fractals flying around, I decided to dig through a
> book I had lying around. There's an interesting passage in the book,
> where it is discussing these figures, called 3d dragon curves, and I
> quote,
> "..he uses IBM's computer resources to plot a million or more points in
> three dimensions to generate a three-dimensional dragon curve. He then
> runs a ray tracing program which determines the illumination of every
> point and the positioning of it on a two-dimensional display. Needless
> to say, this is beyond the capability of our personal compters."
> The book is a little out of date, apparently.. (published in 1990) I
> didn't quite use a million points, but I did use 1 out of every 5 of my
> 288000 calculated points. 57600 blobs still makes a pretty funky image,
> tho..
> -Alex V.
>
> --------------------------------------------------------------------------
> [Image] [Image] [Image]
--
omniVERSE: beyond the universe
http://members.aol.com/inversez/homepage.htm
mailto:inv### [at] aolcom?Subject=PoV-News
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Animate them!!!
do them rolling round or something, that would look really weird, these are
excellent!
Rick
Alex Vandiver <van### [at] tiacnet> wrote in message
news:37296E22.EE317082@tiac.net...
> With all of these fractals flying around, I decided to dig through a
> book I had lying around. There's an interesting passage in the book,
> where it is discussing these figures, called 3d dragon curves, and I
> quote,
> "..he uses IBM's computer resources to plot a million or more points in
> three dimensions to generate a three-dimensional dragon curve. He then
> runs a ray tracing program which determines the illumination of every
> point and the positioning of it on a two-dimensional display. Needless
> to say, this is beyond the capability of our personal compters."
> The book is a little out of date, apparently.. (published in 1990) I
> didn't quite use a million points, but I did use 1 out of every 5 of my
> 288000 calculated points. 57600 blobs still makes a pretty funky image,
> tho..
> -Alex V.
>
>
----------------------------------------------------------------------------
----
----------------------------------------------------------------------------
----
----------------------------------------------------------------------------
----
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Marc Schimmler <sch### [at] icauni-stuttgartde> writes:
> Lewis wrote:
> >
> > Thanks! But what if someone tries to cancel my messages?
>
> This is not possible! I would have been tempted to do that with -@--
> posts! :-)
>
> Only the poster can cancel it. And only from the same address if I
> remember right.
Since you can fake your address, it is possible to cancel articles of
other users. I haven't tried it, but I know that it is possible at least
on other newsservers.
Thomas (hoping that Nick won't read this)
--
http://www.fmi.uni-konstanz.de/~willhalm
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Thomas
Are you sure about this? Administrators can delete messages, but
I would think that if I post a message here and go away, turn off
and come back tomorrow, I might not be able to remove even my own
messages. I'm on DHCP via my ISP, and tomorrow would probably
have a different unique identifier.
Just thinking.....
Cheers
Steve
Thomas Willhalm wrote:
>
> Marc Schimmler <sch### [at] icauni-stuttgartde> writes:
>
> > Lewis wrote:
> > >
> > > Thanks! But what if someone tries to cancel my messages?
> >
> > This is not possible! I would have been tempted to do that with -@--
> > posts! :-)
> >
> > Only the poster can cancel it. And only from the same address if I
> > remember right.
>
> Since you can fake your address, it is possible to cancel articles of
> other users. I haven't tried it, but I know that it is possible at least
> on other newsservers.
>
> Thomas (hoping that Nick won't read this)
>
> --
> http://www.fmi.uni-konstanz.de/~willhalm
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interesting images, what was the formulae, again?
(*hint*)
Alex Vandiver wrote:
>
> With all of these fractals flying around, I decided to dig through a
> book I had lying around. There's an interesting passage in the book,
> where it is discussing these figures, called 3d dragon curves, and I
> quote,
> "..he uses IBM's computer resources to plot a million or more points in
> three dimensions to generate a three-dimensional dragon curve. He then
> runs a ray tracing program which determines the illumination of every
> point and the positioning of it on a two-dimensional display. Needless
> to say, this is beyond the capability of our personal compters."
> The book is a little out of date, apparently.. (published in 1990) I
> didn't quite use a million points, but I did use 1 out of every 5 of my
> 288000 calculated points. 57600 blobs still makes a pretty funky image,
> tho..
> -Alex V.
>
> --------------------------------------------------------------------------------
> [Image] [Image] [Image]
--
//Spider -- [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
Get ahead, go figure, go ahead and pull the trigger
Everything under the gun
--"Sisters Of Mercy" -- "Under The Gun"
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Marc Schimmler wrote:
>
> I guess you have serious problems to answer to the right posting! :-)
>
> You can cancel the ones that have gone wrong with
>
> EDIT -> cancel message in your netscape menu.
I just press the delete key. Saves steps and works exactly the same.
--
Ken Tyler
mailto://tylereng@pacbell.net
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anyone know how to delete your own messages in IE5?
--
Rygad
Marc Schimmler <sch### [at] icauni-stuttgartde> wrote in message
news:37299B55.D1DB3ACF@ica.uni-stuttgart.de...
> I guess you have serious problems to answer to the right posting! :-)
>
> You can cancel the ones that have gone wrong with
>
> EDIT -> cancel message in your netscape menu.
>
> Have a nice day,
>
> Marc
> --
> Marc Schimmler
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Umm, under "Compose" I think. Cancel message.
GrimDude
vos### [at] arkansasnet
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Spider wrote:
> interesting images, what was the formulae, again?
> (*hint*)
Unfortunatly, I'm not all that clear on the formula, myself, I just thought it looked
interesting.. ;>
Originally, I wrote the code to export the points in Turbo Pascal, but here's the POV
translation of it; make sense of it what you will. I'm not posting this as a real
macro, though, as it would take way too long to get any number of points. POV just
doesn't like the serious number crunching.. As soon as I can throw one together, I'll
post a .. *gasp* .. 2d .. image of the dragon curve, which will probably make it more
clear why it's called that.. Hrm. Actually, as posting of 2d images is unlawful
around
here, I just may have to TGAmosaic it.. *g*
-Alex
---- Code follows ----
-- Oooh! Indention! --
#declare detail = 400; // Lower numbers make more blobs..
#declare Qval = 0.97064; // Main parameter to change to get different shapes.
// Note that Qval=0 doesn't work.. this is actually the
// imaginary part of a complex number; P is the real
// part.
#declare R = seed(42);
blob {
#declare k = 3;
#while (k >= -3)
#debug concat(str(k,5,5),"\n")
#declare tx = 0.50001;
#declare ty = 0;
#declare magnitude = (k*k + Qval*Qval);
#declare Q = (-4*Qval/magnitude);
#declare P = (4*k/magnitude);
#declare i = 1;
#while (i <= 12000) // Iteration part. Each iteration is more accurate.
#declare temp_x = (tx*P - ty*Q);
#declare ty = (tx*Q + ty*P);
#declare temp_y = ty;
#declare tx = (1- temp_x);
#declare magnitude = sqrt(tx*tx + ty*ty);
#declare ty = sqrt((-tx+magnitude)/2);
#declare tx = sqrt((tx+magnitude)/2);
#if (temp_y < 0)
#declare tx = (-tx);
#end
#if (rand(R) < 0.5) // 50-50 chance of using the negative square root
#declare tx = (-tx);
#declare ty = (-ty);
#end
#declare tx = ((1-tx)/2);
#declare ty = (ty/2);
#declare tz = (P/2);
#if (mod(i,detail) = 0)
sphere {<tx,ty,tz>,0.0625,1 pigment {rgb vnormalize(<tx,ty,tz>)} finish {phong
1/(1+sqrt(tx*tx + ty*ty))}}
#end
#declare i = (i+1);
#end
#declare k = (k - 0.025);
#end
}
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Here's the promised 2d image. It uses the same function, but only takes a
crossection. If
you stretch your imagination, it *might* look like a dragon..
-Alex
Post a reply to this message
Attachments:
Download '2ddrag.jpg' (45 KB)
Preview of image '2ddrag.jpg'
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Interesting. Now I know almost nothing about fractals so I don't know if this has
anything to
do with it but the outline of this "dragon curve" looks a bit like the outline of a
julia
fractal. I've posted a julia fractal from Fractint.
Alex Vandiver wrote:
> Here's the promised 2d image. It uses the same function, but only takes a
crossection. If
> you stretch your imagination, it *might* look like a dragon..
> -Alex
>
> ------------------------------------------------------------------------
> [Image]
Post a reply to this message
Attachments:
Download 'fract001.gif' (82 KB)
Preview of image 'fract001.gif'
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I think you might be on to something here!
I love Fractint, anybody else ever play with it?
Rick
Thomas Lake <tla### [at] homecom> wrote in message
news:372B6AE8.C5B43480@home.com...
> Interesting. Now I know almost nothing about fractals so I don't know if
this has anything to
> do with it but the outline of this "dragon curve" looks a bit like the
outline of a julia
> fractal. I've posted a julia fractal from Fractint.
>
> Alex Vandiver wrote:
>
> > Here's the promised 2d image. It uses the same function, but only takes
a crossection. If
> > you stretch your imagination, it *might* look like a dragon..
> > -Alex
> >
>
------------------------------------------------------------------------
> > [Image]
>
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me
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I thought everyone did...
--
Lance.
---
For the latest 3D Studio MAX plug-ins, images and much more, go to:
The Zone - http://come.to/the.zone
For a totally different experience, visit my Chroma Key Website:
Colorblind - http://listen.to/colorblind
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Zillion times : I have a huge collection of standard fractals (made with
fractint) and personnal ones (in fractint you can write patches !)
Philippe
Rick (Kitty5) a écrit dans le message <372c48a0.1@news.povray.org>...
>I think you might be on to something here!
>
>I love Fractint, anybody else ever play with it?
>
>Rick
>Thomas Lake <tla### [at] homecom> wrote in message
>news:372B6AE8.C5B43480@home.com...
>> Interesting. Now I know almost nothing about fractals so I don't know if
>this has anything to
>> do with it but the outline of this "dragon curve" looks a bit like the
>outline of a julia
>> fractal. I've posted a julia fractal from Fractint.
>>
>> Alex Vandiver wrote:
>>
>> > Here's the promised 2d image. It uses the same function, but only
takes
>a crossection. If
>> > you stretch your imagination, it *might* look like a dragon..
>> > -Alex
>> >
>>
> ------------------------------------------------------------------------
>> > [Image]
>>
>
>
>
>
>
>
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Yep, a hell of a lot.
Rick (Kitty5) wrote:
>
> I think you might be on to something here!
>
> I love Fractint, anybody else ever play with it?
>
> Rick
> Thomas Lake <tla### [at] homecom> wrote in message
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Now that I think about it, I bet that 90% of Fractint users are povers
as well.
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I found an old copy on a shareware CD. . .YES YES YES! I'm a Fractint
addict!
-Ian
P.S. Are there any recent versions of it? If there is, where can I get it?
Thanks in advance.
Rick (Kitty5) <kit### [at] dialpipexcom> wrote in message
news:372c48a0.1@news.povray.org...
> I think you might be on to something here!
>
> I love Fractint, anybody else ever play with it?
>
> Rick
> Thomas Lake <tla### [at] homecom> wrote in message
> news:372B6AE8.C5B43480@home.com...
> > Interesting. Now I know almost nothing about fractals so I don't know if
> this has anything to
> > do with it but the outline of this "dragon curve" looks a bit like the
> outline of a julia
> > fractal. I've posted a julia fractal from Fractint.
> >
> > Alex Vandiver wrote:
> >
> > > Here's the promised 2d image. It uses the same function, but only
takes
> a crossection. If
> > > you stretch your imagination, it *might* look like a dragon..
> > > -Alex
> > >
> >
> ------------------------------------------------------------------------
> > > [Image]
> >
>
>
>
>
>
>
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19.6 AFAIK and that is an old version, search fractint on yahoo or whatever
search engine.
Philippe
Ian Burgmyer a écrit dans le message <372cbe71.0@news.povray.org>...
>I found an old copy on a shareware CD. . .YES YES YES! I'm a Fractint
>addict!
>
>-Ian
>
>P.S. Are there any recent versions of it? If there is, where can I get it?
>Thanks in advance.
>
>Rick (Kitty5) <kit### [at] dialpipexcom> wrote in message
>news:372c48a0.1@news.povray.org...
>> I think you might be on to something here!
>>
>> I love Fractint, anybody else ever play with it?
>>
>> Rick
>> Thomas Lake <tla### [at] homecom> wrote in message
>> news:372B6AE8.C5B43480@home.com...
>> > Interesting. Now I know almost nothing about fractals so I don't know
if
>> this has anything to
>> > do with it but the outline of this "dragon curve" looks a bit like the
>> outline of a julia
>> > fractal. I've posted a julia fractal from Fractint.
>> >
>> > Alex Vandiver wrote:
>> >
>> > > Here's the promised 2d image. It uses the same function, but only
>takes
>> a crossection. If
>> > > you stretch your imagination, it *might* look like a dragon..
>> > > -Alex
>> > >
>> >
>> -----------------------------------------------------------------------
-
>> > > [Image]
>> >
>>
>>
>>
>>
>>
>>
>
>
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hmm.. no, I can't really see a dragon in here... perhaps there is one, perhaps
not.. not in my eyes at least.
Alex Vandiver wrote:
>
> Here's the promised 2d image. It uses the same function, but only takes a
crossection. If
> you stretch your imagination, it *might* look like a dragon..
> -Alex
>
> --------------------------------------------------------------------------------
> [Image]
--
//Spider -- [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
And the meek'll inherit what they damn well please
Get ahead, go figure, go ahead and pull the trigger
Everything under the gun
--"Sisters Of Mercy" -- "Under The Gun"
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On Sun, 2 May 1999 17:13:35 -0400, "Ian Burgmyer"
<the### [at] hotmailcom> wrote:
>I found an old copy on a shareware CD. . .YES YES YES! I'm a Fractint
>addict!
>P.S. Are there any recent versions of it? If there is, where can I get it?
Try Spanky's page, the "www home of Fractint".
http://spanky.triumf.ca/www/fractint/fractint.html
Jerry Anning
clem "at" dhol "dot" com
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Thanks a bunch! :)
-Ian
Jerry Anning <nos### [at] despamcom> wrote in message
news:372cfbf8.31523386@news.povray.org...
> On Sun, 2 May 1999 17:13:35 -0400, "Ian Burgmyer"
> <the### [at] hotmailcom> wrote:
>
> >I found an old copy on a shareware CD. . .YES YES YES! I'm a Fractint
> >addict!
>
> >P.S. Are there any recent versions of it? If there is, where can I get
it?
>
> Try Spanky's page, the "www home of Fractint".
> http://spanky.triumf.ca/www/fractint/fractint.html
>
> Jerry Anning
> clem "at" dhol "dot" com
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Steve <sjl### [at] ndirectcouk> writes:
> Thomas
>
> Are you sure about this? Administrators can delete messages, but
> I would think that if I post a message here and go away, turn off
> and come back tomorrow, I might not be able to remove even my own
> messages. I'm on DHCP via my ISP, and tomorrow would probably
> have a different unique identifier.
I'm almost sure. I have once accidentally made a massive crosspost.
Someone else was so kind to cancel it, because I didn't know how
to do this at that time. It basically results in faking the origin
and poster of the cancel request.
Thomas
--
http://www.fmi.uni-konstanz.de/~willhalm
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