The Hypotrochoid · Inside the Spirograph
unseel.com · a small gear rolls inside a big ring · a pen traces the flower
Lap 0 / 3
Petals 0 / 8
Phase PRIMED
Pen trace (the curve)
Rolling gear (radius r)
Fixed ring (radius R)
Gear-center path (R−r)
Unseel.com · The Hypotrochoid