Public formulas
Ultra Fractal comes with a set of 
standard fractal formulas
, 
transformations
, and 
coloring algorithms
. 
They are easy to use and well documented. However, when you get more experienced, you will want 
to work with more different formulas.
Most of the custom formulas written for Ultra Fractal are available through a public formula database 
on the Internet (
formulas.ultrafractal.com
). Here, you can download a complete set of formulas, 
browse the collection, and add your own formulas.
You can download formulas from the database from within Ultra Fractal. This will automatically 
download new and updated formulas and install them appropriately. 
G     
To start updating your collection of public formulas, click Update Public Formulas on the 
Options menu. You can select what to download: the weekly or monthly update, or the full 
collection. Ultra Fractal will automatically select the most appropriate option depending on 
how long ago you last updated the formulas.
The downloaded formulas will be installed in the Public formulas folder. By default, its location is My 
Documents\Ultra Fractal 4\Formulas\Public. It is always located under the main Formulas folder. 
The formulas will be installed according to the following rules:
G     
If a formula file already exists in the Public formulas folder or in a subfolder, it will be 
overwritten. If the existing file is newer than the downloaded file, you will be prompted for 
confirmation.
G     
If a formula file does not exist yet, it will be created in the Public formulas folder.
G     
If a formula file already exists outside the Public formulas folder, it will not be updated or 
overwritten. These files are listed as skipped. If you are a formula author, you can thus avoid 
overwriting your own files when updating the formulas by placing them in the Formulas\My 
Formulas folder instead of in Formulas\Public.
When all files are downloaded and installed, a short summary of the changes is shown. Details can 
be found in the Update.log file created in the Public formulas folder.
Notes
G     
You are free to organize the public formulas in subfolders in the Public formulas folder, for 
example to put files that you rarely use in a separate folder. The files will still be updated 
correctly.
G     
You can change the location of the Public formulas folder in the Folder tab of the 
Options 
dialog
.
G     
The formula database also contains text files with documentation and parameter files with 
examples. These are copied to the Public formulas folder as well.
G     
If you have a dial up connection, make sure you are connected to the Internet before 
updating your formulas. Otherwise, Ultra Fractal might not be able to connect to the formula 
database.
G     
When opening a 
parameter set
 that uses formulas that cannot be found, you can directly 
download the file from the formula database.
Next: 
Standard formulas
See Also
144






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