Harmonograph / Plotfunction of a moving point - of a geometrical problem

Alex shared this question 6 years ago


it should be possible to implement the Harmonograph-functionality in Geogebra.

And I think this Project would be appealing to others too.


To implement the geometrical behaviour was relative easy.

But now I want a plot-function of point "Z".

I know that there is a function-plot in Geogebra. But I don't have any idea how to define an algebraic formula out of this geometrics.

The "apparatus" is animated / moved (right now) by the "Phi"-Slider.

I've attached the file

Any idea would be verry much appreciated.

© 2023 International GeoGebra Institute