curveVertex03

void setup() {
  size(500, 500);
  colorMode(HSB, 360, 100, 100, 100);
  background(0, 0, 100);
  noStroke();
}

void draw() {
  fill(0, 0, 100, 20);
  rect(0, 0, width, height);

  fill(80, 70, 80, 50);
  beginShape();
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  curveVertex(random(width), random(height));
  endShape();
}

なにも考えずに書いても，Processingはそれらしいものを返してくれる．すばらしいですね．発表の準備やら何やらで余裕がなくなってきた．