![](/i/fill.gif) |
![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Once I found a mildly cogent description
( http://www.midnightbeach.com/jon/pubs/3D_Fractal_Landscapes.html )
it became pretty simple to put together a little program to
generate a mesh of fractal landscape. Just an hour or so to get it
written and working, scaling properly and all.
Now... what do I do with it? Possibilities abound - tile them? Blow up
the first one, and trace the innards on each sub-triangle? Figure out
how to animate an infinite zoom into the fractal that way?
--
Darren New / San Diego, CA, USA (PST)
Scruffitarianism - Where T-shirt, jeans,
and a three-day beard are "Sunday Best."
Post a reply to this message
Attachments:
Download 'test.jpg' (96 KB)
Preview of image 'test.jpg'
![test.jpg](/povray.binaries.images/attachment/%3C45b19afe%40news.povray.org%3E/test.jpg?ttop=443866&toff=4050&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Darren New wrote:
> Once I found a mildly cogent description
> ( http://www.midnightbeach.com/jon/pubs/3D_Fractal_Landscapes.html )
> it became pretty simple to put together a little program to
> generate a mesh of fractal landscape. Just an hour or so to get it
> written and working, scaling properly and all.
>
> Now... what do I do with it? Possibilities abound - tile them? Blow up
> the first one, and trace the innards on each sub-triangle? Figure out
> how to animate an infinite zoom into the fractal that way?
>
>
> ------------------------------------------------------------------------
>
I vote for the zoom option. You'll hit precision problems somewhere
along the road to infinity but it might be interesting to see the first bit.
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Darren New wrote:
> Once I found a mildly cogent description
> ( http://www.midnightbeach.com/jon/pubs/3D_Fractal_Landscapes.html )
> it became pretty simple to put together a little program to
> generate a mesh of fractal landscape. Just an hour or so to get it
> written and working, scaling properly and all.
>
> Now... what do I do with it? Possibilities abound - tile them? Blow up
> the first one, and trace the innards on each sub-triangle? Figure out
> how to animate an infinite zoom into the fractal that way?
How about making an erosion routine? You could "rain" points down to eat
away the landscape. Just a thought ;)
~Sam
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Darren New wrote:
> Now... what do I do with it? Possibilities abound - tile them? Blow up
> the first one, and trace the innards on each sub-triangle? Figure out
> how to animate an infinite zoom into the fractal that way?
Converting it into an isosurface (by some kind of "cross-approximation"
- has this ever been done?) to get an infinitely zoomable smooth surface
would be thrilling... I dream of doing the very same with my
heightfields generated from SRTM data or even topographic maps - but the
necessary math would be as mind-blowing as CPU-choking...
See you in Khyberspace!
Yadgar
Now playing: The Lake (Mike Oldfield)
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
> Converting it into an isosurface (by some kind of "cross-approximation"
> - has this ever been done?) to get an infinitely zoomable smooth surface
> would be thrilling...
Yeah, that would be cool. I'd call that "reimplementing the fractal
generator in SDL." :-)
I just spent about 10 times as long as I spent on the original program,
trying to get a second fractal that can patch into the middle of the
first fractal with the edges lined up, and it has me completely stumped
why all the numbers come out right but the actual picture looks wrong.
Edges don't line up, jaggies poke way out of the way, etc. :-) Moving on
to something else for the moment...
(If anyone wants the code as it stands, I can post it, but it's not
POV-specific.)
--
Darren New / San Diego, CA, USA (PST)
You know it's time to trim your beard when your
wife stops calling you Husband and starts calling
you Husbollah.
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
High!
Darren New wrote:
>
>> Converting it into an isosurface (by some kind of
>> "cross-approximation" - has this ever been done?) to get an infinitely
>> zoomable smooth surface would be thrilling...
>
>
> Yeah, that would be cool. I'd call that "reimplementing the fractal
> generator in SDL." :-)
In 2005, I heard that Tor Olav Kristensen had developed a conversion
tool that generates isosurfaces from heightfields (really smooth
isosurfaces, not pixelized ones like with Christoph Hormann's Iso-HF
tool!)...
See you in Khyberspace!
Yadgar
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |