1/ Click on the green flag to start 2/ Set Radius 1 and Radius 2, then click on the calculator to know the Number of Laps* that gives a complete figure 3/ Graphic settings are available: Thickness, Color and Intensity of the line (Progressive options can be selected) 4/ Start tracing by clicking on Play Maintain "?" button down to get some Help (*) More than 10 laps can be a little long
Have a look to the tutorial and the 7 proposed examples. At any time you can go back to the blank background to see the result of each step. Then try your own combinations and free your "Spiro" sense of art. ;o) Upcoming enhancements: possibility to choose the orientation of the figure, and availability of hypocycloids.
