arbol.pde

int totalIte = 15;

void setup() {
  size(600, 600);

  generate();
}

void draw() {
}

void keyPressed() {
  generate();
}

void generate() {
  background(255);

  stroke(0, 240);
  arbol(width*0.5, height*0.8, width*0.5);
}



void arbol(float x, float y, float s) {
  float a = PI*1.5;
  s = s/5;
  rama(x, y, a, s, totalIte);
}

void rama(float x, float y, float a, float s, int ite) {
  float ax = x;
  float ay = y;
  float str = s*0.01;
  x += cos(a)*s;
  y += sin(a)*s;
  strokeWeight(8*str);
  line(ax, ay, x, y);
  s *= random(random(0.6, 0.8), 0.95);
  ite--;
  if (ite > 0) {
    if (random(1) < 0.8) rama(x, y, a-random(0.2, 0.4), s, ite);
    if (random(1) < 0.8) rama(x, y, a+random(0.2, 0.4), s, ite);
  }
}