Polar Plot Line Art with variable angle steps
Polar Plot Line Art with Intricate Symmetry
The fraction astep/360 determines whether the pattern is simple or complex.
For astep=40, the fraction 40/360 = 1/9 gives a simple drawing ( a bird ? ) that you may find amusing.
Use rotate=90, arev=1, adeg=0, astep=40, am=2, pow=1, and then see what happens when you slowly increase pow.
To get complex patterns, you can use prime numbers for astep. Try these : 23, 31, 43, 47, 73.
Some non-primes like 49 and 77 also give complex patterns ( Why is that ? )
With each value of astep, you can try various values for am and pow. There are over 10,000 drawings to explore.