From DigiOz Multimedia:
Spirograph is a free simulation software. This application is absolute fun because of its ease of use and powerful features that allow you to create astonishingly beautiful Spirograph patterns.
All the patterns are drawn using hypotrochoid and epitrochoid equations that can be manipulated in different ways.
Setting different parameters to change the curves and patterns is made possible through a simple side panel which contains several buttons and input fields easily manipulated with mouse and keyboard.
- Create Spirograph patterns and a few more not possible using the real to
See image creation as animation
-Export the created patterns to image files
-Save work in simple XML based files for later use. The extension .spiro is only for convenience. You can edit and create .spiro files in any simple text editor (like notepad) if you ever needed.
-Work with multiple Spirograph patterns at the same time
Copy-paste the curves between different instances of the application.