Sure you will figure it out. Four rotating/pivoting arms of different length and rotating at different speeds (some CW and some CCW) to make all kinds of interesting drawings. Change the speed / direction and length of the arms in the code. The path being traced is that of the tip of the last arm.
I probably explained it poorly and was too brief: I meant: "Develop (you all, not me ) the project to get that animation" (as "challenge" and just for fun).