Quat - A 3D-Fractal-Generator
Version 1.20

Download of Quat 1.20:

All archives come with documentation and examples.
The source code archive in Unix .tar.gz format can be unzipped under Windows with Winzip.
Under Windows there are optimized versions for Pentium III/IV, which don't run on older processors. These versions currently are untested.

Binaries:

System	Processor (or higher)	File	Size
Windows 95/98/ME/NT/2000/XP	Pentium	quat-1.20-setup.exe	1054 KB
	Pentium III	quat-1.20-pentium3-setup.exe	1055 KB
	Pentium IV	quat-1.20-pentium4-setup.exe	1047 KB
Linux glibc 2.2 (e.g. Slackware 8.0/8.1)	Pentium	quat-1.20-linux-static.tar.gz	541 KB

Source code:

• quat-1.20.tar.gz

The archives should be decompressed to keep the directory structure.
The binaries have been linked statically against FLTK 1.1.1.

Program description

Quat is a program for the calculation of genuine three dimensional fractals, like those you can see in the Artist Forum, the Fractal Gallery or at the Sculptures. These fractals can be cut open to explore their interior. For this purpose you can define intersection planes, whose positions can be adjusted freely.
The coloring of an object is done very flexible by a formula, which attaches a color to every point in space.

Quat is licensed through GNU GPL license version 2 ("GNU General Public License"), therefore it may and shall be copied without costs. The source code is also available. Please read the license, which is also included in the downloadable archives.

Quat calculates a fractal in PNG image format using 24bit true color. The calcuation can be done in text mode, graphical output during calculation is also possible, but often in worse quality than the image being saved.

Quat runs on a variety of platforms. Following precompiled versions could be downloaded: Windows (32bit), Linux (X Window System) and DOS. Furthermore, it should be no problem to recompile the source on any system that has an ANSI-C-Compiler installed, at least in a version without graphical output.

Short overview over the features:

• True-Color is used with palettes which can be created freely (smoothly shaded range between two colors)
• Generation of 3d stereo images
• Possibility to use Z buffers
• The fractal is colored by a mathematical formula that can be defined by the user. The formula has an index to the true-color-palette as its result. For example, the fractal may be blue on the left side and get more and more red to the right.
• Resolution and number of colors of the generated image does not depend on the video mode used for calculation. So the calculation can even be done in text mode.
• The fractal object can be cut open using intersection planes. So their interior can be seen.
• Calculation of an image can be interrupted and resumed.
• Quat runs on many platforms
• It may be copied freely, source code is available (see GNU License)

Quat 1.20 has the following new features and bugfixes:

• Resizable Julia Preview in Parameter Editor, which displays with the same aspect ratio as the image.
• Tooltips & integrated documentation browser.
• some usability improvements.
• Windows version: Uses an installer (Inno Setup)
• Uses FLTK 1.1, which has some big improvements compared to 1.0 (the file chooser e.g.)
• Maximum image size in pixel: 32,767 (GUI version) / 100,000 (text version)
• Intersection Editor did not work correctly with more than one intersection plane.
• High Bailout values couldn't be read from INI file.
• Parameters in the "Other Editor" weren't updated when INI file was read within the Parameter Editor.
• Unix: Quat hanged when a directory was selected instead an INI file.
• An empty image (when calculation was stopped before the first line was drawn) wasn't written correctly.