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- This program is a simple fractal manipulator using the formulas
- for various known types of fractals. There is a theory that all
- complicated designs can be broken down into simple formulas that, when
- put through a generation scheme can regenerate the original design.
- While this might be true, it is quite difficult to generate the
- formulas. I will not go into the mathematics of these three fractals
- or how the formulas were generated, but will allow you to just play
- with them.
- There are three types of figures here, labelled fern, triangle,
- and tree. The formulas for them can be seen when you pick on of these
- objects. A random number between 0.0 and 1.0 is generated and it is
- used to determine which line of the formula is to be used. Subtle
- changes in the formula allows for significant changes in the actual
- figure.
- Essentially, you start the program, and pick one of the figures
- that you want. Any time you hit a key, the fractal choice dialog box
- appears allowing you to choose another fractal, quit, or change the
- numbers that are used to generate the fractal. Click on OK, and the
- fractal will be generated. If you press the 'S' key for "size", then
- you change the parameters used for the figure. The same values will
- be used, but you can 'magnify' the picture in either directions, as
- well as centering the picture better. Thus if you want to make the
- fractal twice as wide, double the 'X' value. Twice as long will occur
- if you double the 'Y' value. You can center the fractal by changing
- the offset.
- This program runs on the medium TT resolution and uses the
- floating point chip if it is available.
- This program can be distributed as you wish, so long as all the
- files are kept together.
-
- Sol Guber
- Fonts by Guber
- Desktop Publishing Tools
-
- October 28, 1991
-
- This version does one more thing, when the "P" is pressed. It
- will print the fractal on your printer. This is NOT a screen dump, but
- an actual printing of your fractal at the maximum resolution that the
- printer can accomplish. For a laser printer, this can be up to 300
- dots per inch. There are three things that are needed to use this
- program, a version of GDOS, a proper GDOS printer for your printer, and
- a printer. It will check for the presence of GDOS, but will not check
- for the other two items, or for your printer being on. To work
- properly, the printer must be item 21 in your ASSIGN.SYS file that the
- GDOS uses during initiation.
- To use the program to its best advantage, select the fractal and
- the magnification that you want. Let the program run for several
- minutes to generate enough points to make a dark print. Then press "P"
- and after several seconds the information will be sent to your printer.
- For a laser printer, it may take several minutes to send sufficient
- information to the printer.
- After the printer is finished, then you can make other selections
- or quit the program.
- I hope that you enjoy this program. It is the first in a series
- of mathematical programs to show off your printer, and the ATARI
- system,
-
- Sol Guber