Excellent program By a simple sliding of the finger, it draws three-parameter (R, r, h) curves known as trochoids (τροχός = wheel, είδος = kind, in Greek). For random choices of the parameters the curves have infinitely many loops. For special choices you get closed periodic curves. What is missing here is a way to define the parameters numerically. Getting exact closed curves by finger sliding is not possible. You got the code. Please add the appropriate interface. Thank you.
English version needed -Very interesting app, but need version in English.
Исправлено некорректное отображение на телефонах с маленьким разрешением
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