public class Nagon {
  float x[];
  float y[];
  int n;

  Nagon(int numberOfVertex, float xPos, float yPos, float rad, float theta) {
    n = numberOfVertex;
    x = new float[n];
    y = new float[n];
    int step = n - 1;
    if (n % 2 == 0) step = 2;
    for(int i = 0; i < n; i++){
      x[i] = xPos + rad * cos( theta + (i * step * PI) / n );
      y[i] = yPos + rad * sin( theta + (i * step * PI) / n );
    }
  }

  void DrawNagon () {
    for (int i = 0; i < n; i++){
      if (n % 2 != 0){
       line(x[i],y[i],x[(i+2)%n],y[(i+2)%n]);
      } else {
        line(x[i],y[i],x[(i+1)%n],y[(i+1)%n]);
      }
    }
  }
}

void setup () {
  size (1000, 1600);
  background (0);
  stroke(255);
  smooth();
  for(int i = 0; i < 7; i++){
    for(int j = 0; j < 4; j++){
      for(int k = 1; k < 20; k++){
        Nagon n = new Nagon(i+3,200 + 200*j, 200 + 200*i,k*5 ,k*j*2/PI);
        n.DrawNagon();
      }
    }
  }
  noLoop();

}

//this function ripped from code written by http://markusbenjamin.tumblr.com/ who has a cool blog which you should check out
void keyPressed() {
  if (key=='s') {
    save(nf(random(1)*1000, 4, 4)+".png");
  }
}