Replicates "spirograph" patterns. Adjust ratio and pen distance from gear center for different patterns. The project continuously runs the full gamut for each setting you choose.
Runs many revolutions (set by "runs" slider) fast, so you can quickly see pattern changes. My previous Spirograph project simulated actual mechanism of the toy, moving at human drawing speed. The toy has a small gear (circle) within a large circle. This one uses the spirograph equations for "hypotrochoids" (what spirograph makes), essentially a small circling gear within a larger circle. Varying ratio and pen distance from gear center results in seemingly endless different patterns. Note that smaller ratios make larger patterns. Consider that when gear (smaller circle) is very small with pen distance from gear center of zero, the pattern is close to a circle the size of the larger circle. Note that pen distance from gear center really shouldn't exceed the radius of the gear.
