code and graphic design

I wanted to look into the intersection between graphic design and code. I found a program called Processing, where you can code in Java, C++ or Python. After trying a few simple things, this animation seemed to be pretty cool:

The code for it is below. There are two functions that automatically run, setup() (runs once like __init__) and draw() (continuously runs). So I just continuously increased the radius at which that ellipse is at, as well as it’s angle with a couple sines and cosines to make it dynamic.

import math
import random

class DrawEllipse():
    def __init__(self):
        self.angle = 0
        self.r = 1
        
    def draw_circle(self, r=50):
    	# increase radius and angle incrementally
        self.angle += 0.05
        self.r += 0.1
        # get cartesian coords
        x_coord = r * math.cos(self.angle)
        y_coord = r * math.sin(self.angle)
        # color and draw ellipse
        fill(10, 50, 150)
        ellipseMode(CENTER)
        ellipse(x_coord, y_coord, self.r * math.cos(self.angle), self.r * math.sin(self.angle))
        
    def get_angle(self):
        return self.angle
        
d = DrawEllipse()

def setup():
    size(300, 300)
    background(20, 20, 20)
    
def draw():
    translate(width / 2, height / 2)
    d.draw_circle()