symmetrical_ruler.pde

int numVerticles = 6;
int weight = 3;
color bgColor, fillColor;
float t = 0.0;
float s = 2.5;

void setup() {
  size(960, 540, P2D);
  smooth();
  colorMode(HSB, 360, 100, 100);
  blendMode(ADD);
  rectMode(CENTER);
  bgColor = color(210, 80, 5);
  fillColor = color(0, 80, 40);
  background(bgColor);
}

void draw() {
  translate(width/2, height/2);
  fill(0, 0, 0, 5);
  noStroke();
  rect(0, 0, width, height);

  float x = cos(radians(frameCount)) * 150 * noise(t) * 2.5;
  float y = sin(radians(frameCount)) * 150 * noise(t) * 2.5;

  float x2 = cos(radians(frameCount)) * 150 * noise(s) * 3.0;
  float y2 = sin(radians(frameCount)) * 150 * noise(s) * 3.0;

  stroke(frameCount % 360, 80, 50, 50);
  strokeWeight(weight);
  for (float i = 0; i < 360; i += 360.0/numVerticles) {
    float angle = radians(i);
    pushMatrix();
    rotate(angle);
    line(x, y, x2, y2);
    line(-x, y, -x2, y2);
    popMatrix();
  }
  t += 0.01;
  s += 0.02;
}