I wanted to explore motion using polar coordinates that's restricted to the inside of a unit cycle - so I created a processing sketch where the radius and the angle of a poolar coordinate vector oscillate using some trigonometric functions with different phasing and periodicity, converted them to Cartesian coordinates and made a small blue dot following the line.
If you read the above paragraph without leaving - contratulations! - here is a small blue dot creating a wiggly line inside a circle - as a reward :-)
click here to start the sketch or download the sourcecode.
nested cubes in processing
de jong attractor