# Seventy-Five Ways to Draw a Circle

*All Processing code for this article, along with images, can be found on Github*

I recently challenged myself to come up with twenty five designs using only Perlin flow fields. This article is the next part of this series of explorations where I set myself up with another simple challenge: come up with a seventy-five different ways to draw a circle.

## The Constraints

I set three constraints for this challenge. First, I decided to forego the use of color as I wanted to focus on variety in forms instead. I also find that using color variations to get out of a rut makes me feel like I’m cheating.

Second, every version should be implemented as an independent, re-usable function conforming to the following declaration:

```
void circle(float x, float y, float r) {
/* Draw a circle with center at (x, y) and radius r */
}
```

This way, I can easily reuse them later for other works.

As the third and final constraint, each version had to have some generative/procedural component to it. That is, each time the function is called, a new variant should be generated.

Enough talking. Here are the results! Enjoy!

## Seventy-Five Circles

*#1*

*#2*

*#3*

*#4*

*#5*

*#6*

*#7*

*#8*

*#9*

*#10*

*#11*

*#12*

*#13*

*#14*

*#15*

*#16*

*#17*

*#18*

*#19*

*#20*

*#21*

*#22*

*#23*

*#24*

*#25*

*#26*

*#27*

*#28*

*#29*

*#30*

*#31*

*#32*

*#33*

*#34*

*#35*

*#36*

*#37*

*#38*

*#39*

*#40*

*#41*

*#42*

*#43*

*#44*

*#45*

*#46*

*#47*

*#48*

*#49*

*#50*

*#51*

*#52*

*#53*

*#54*

*#55*

*#56*

*#57*

*#58*

*#59*

*#60*

*#61*

*#62*

*#63*

*#64*

*#65*

*#66*

*#67*

*#68*

*#69*

*#70*

*#71*

*#72*

*#73*

*#74*

*#75*