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Fractals F.A.Q (Last Updated: 2025 Jan 21 7:59 pm)




Subject: Three new texture examples with UltraFractal


abmlober ( ) posted Sat, 18 May 2002 at 11:57 AM ยท edited Thu, 23 January 2025 at 3:23 PM

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=186029

file_8928.jpg

Just a short note to let you know that I added three images made with UltraFractal to the 2D gallery:

http://www.renderosity.com/viewed.ez?galleryid=186025

http://www.renderosity.com/viewed.ez?galleryid=186029

http://www.renderosity.com/viewed.ez?galleryid=186030

I hope you can enjoy these...

:rolleyes::sad:
Joy of Frax


audre ( ) posted Sun, 19 May 2002 at 9:16 PM

WOW..wow... wonderful effects.... i love them all... very very cool textures. but please tell us ingoramus fractalites... what does "SFBM texture plus convolution" mean exactly??


abmlober ( ) posted Mon, 20 May 2002 at 3:08 AM

fBm texture is something to create cloudy structures with. It was brought into UF by Damien M. Jones but not everyone was allowed to write new code using it.

Therefore Samuel Monnier made the SFBM - having nearly the same effects and the actual version - SFBM II - is a work of a genious :-)

Convolution is a technique to iterate an internal layer say located on a central point, on a northern point, a southern point, a western point, and an eastern point. Every point has a certain weight in this iteration and summing up. Let's say 4+something for the center and -1 for all the other points. That results in having most of the plane without a colour but at the shapes' edges you can see something - the outline of the shapes plus a little bit more.
Try it out with five layers in photoshop. But the results are not as good as in one UCL having this convolution feature.

It was Mark Townsend (mt.ucl) who brought this technique to UF.

:rolleyes::sad:
Joy of Frax


audre ( ) posted Mon, 20 May 2002 at 7:52 PM

ookay... i am going to have to mush that one over for a bit to see if i can make sense of it.. thanks for explaining. regardless of my understanding of the stuff, it sure did make cool images! Message671426.jpg


abmlober ( ) posted Mon, 20 May 2002 at 11:16 PM

Locating the center on a northern point etc...
Better: Move the layer a bit to the north, the south, ... and then subtract all these moved layers from the original one but only with opacity a bit less than 25 percent.

:rolleyes::sad:
Joy of Frax


firefly ( ) posted Mon, 20 May 2002 at 11:59 PM

Those are gorgeous and very interesting images abmlober. I'm strictly a "point and click" fractal maker who delights in going ever deeper and deeper into them. For me my fractal programs feel very much like a kaleidescope. I do envy and admire those of you who actually understand the mathematical and function components of the fractal programs. Kudos!


audre ( ) posted Tue, 21 May 2002 at 12:16 AM

ehehe me too firefly... i don't spose we could get the master fractologist to show us some 'step by step' of what he was explaining? hopeful look


firefly ( ) posted Tue, 21 May 2002 at 12:34 AM

(big smiles) I'm so glad I'm not alone!! Listening to all the others here I constantly feel quite er, um, lost! hmm, it would have to be in absolute baby steps!!


Ianfe ( ) posted Fri, 24 May 2002 at 2:54 PM

Well, I've only been experimenting with fractals lately. Had to read a ton of stuff, and I still barely understand the mathematics behind it all (good thing my college has a good library!) So, yeah, a step-by-step would be very good! And Kudos on those images, they are amazing!


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