1  
   2  int setHeight = 60;
   3  color setColour = color(184 + random(-40, 40),
   4                          124 + random(-40, 40),
   5                          124 + random(-40, 40));
   6  int wid = 600;
   7  
   8  void setup() {
   9    size(wid, (int)((log(wid) / log(3) + 1) * (setHeight + 5)));
  10    background(0);
  11    smooth();
  12    
  13    cantorSet(10, 10, width - 20, setColour);
  14    
  15    save("cantorSet.png");
  16  }
  17  
  18  float rnd(float x) {
  19    return x + random(-20, 20);
  20  }
  21  
  22  void brushRect(int x, int y, int w, int h) {
  23    for (int i = 0; i < h; ++i) {
  24      float r = random(3);
  25      strokeWeight(r);
  26      float downpull = random(h / 4);
  27      float shudder = random(-2, 2);
  28      line(x + shudder, y + i, x + w - shudder, y + i + downpull);
  29    }
  30  }
  31  
  32  void cantorSet(int y, int offX, int wid, color col) {
  33    if ((y > height - 10) || (wid < 1))
  34      return;
  35  
  36    stroke(col);
  37    brushRect(offX, y, wid, setHeight);
  38    //fill(col);
  39    //rect(offX, y, wid, setHeight);
  40    
  41    color newCol = color(rnd(red(col)), rnd(green(col)),
  42                        rnd(blue(col)));
  43    cantorSet(y + setHeight + 5, offX, wid / 3, newCol);
  44    cantorSet(y + setHeight + 5, offX + wid*2/3, wid / 3, newCol);
  45  }