Lab journal: Cardioid, the algorithmic design on processing

This week's lab session, we are learning how to use processing.

I start to draw a 'heart-shaped', which is a curve that is the locus of a point on the circumference of circle rolling round the circumference of a circle of equal radius.

Under the polar coordinates, the cardioid can be interpreted as r=a(1-sinθ)

And the code in processing is pretty simple. Then, by changing some of the parameters, it has become a girl's face and hair🤣

Here're the prototype.