Hi all,

I've written a simple fractal program as a hobby project, and I'm releasing it as freeware. The program is called "Janus Fractal", and it lets you create Iterated Function System fractals and manipulate them interactively. It uses a texture feedback algorithm: each frame, it renders the fractal to a bitmap image in memory, and then the next frame it uses a copy of the previous frame as input for that one, scaling it down, applying rotations and other transformations and so on. It's all done with software rendering, no 3D hardware acceleration for the time being.

There are 6 fractal types implemented: Julia fractals (these are not IFS fractals, but you can render them with texture feedback, so I threw them in), Tree fractals, Spirals, "n-around-1" fractals, L- Systems and 3D IFS fractals.

You can load various pre-made fractals using "File->Quick Load Fractal", then use a combo-box and slider bar to edit fractal parameters, or drag blue "hotpoints" around to edit the fractal interactively. The type of fractal is selected from the "Transform (X)" menu and the various components of the fractal motif are selected from "Generator (Y)". Rendering options (colouring, blur, HDR etc) are in the Options menu. Help -> Show Keymappings shows keyboard shortcuts.

There is an HTML manual that comes with it that you can pull up from the Help menu (or open it from the Manual folder).

Here are some links to download it (for Windows only at the moment):

Janus Fractal v1.111 (.rar file): http://www.megaupload.com/?d=SU2HM0QQ
(3.32 Mb)

Janus Fractal v1.111 (.zip file): http://www.megaupload.com/?d=WX2NLNXV
(4.79 Mb)

This is the first release, at some point in the future I hope to add more features like zooming, more flexible L-System specification and so on.

Chris

that's some really nifty software the tree fractal is incredibly fun to play with, and is beautifully rendered - i'm using a geforce 8800gts with 16x antialiasing on, it's incredibly smooth and interactive.

gonna explore it some more now, just wanted to say gratz!

Nice software.
I like looking at the patterns created by the trees.

I can only use it once in a rare while because my computer is a Linux OS.

I suppose I could try setting it up with WINE but that sounds too complicated.

Anyway it's still a really nice program. thanks.
 

virus safe 

Seriously, I am impressed by it's speed of drawing.