Processing系列 三角分形

void setup() {
  size(300, 300);
  translate(150, 175);
  rotate(-HALF_PI);
  background(55);
  stroke(255);
 
  Point[] points = {
    new Point(cos(0)*140, sin(0)*140), 
    new Point(cos(TWO_PI/3)*140, sin(TWO_PI/3)*140), 
    new Point(cos(TWO_PI/3*2)*140, sin(TWO_PI/3*2)*140),
  };
 
  Point point = new Point(points[0]);
  for (int i=0; i<10000; i++) {
    int index = int(random(3));
    point.x = (point.x + points[index].x) * .5;
    point.y = (point.y + points[index].y) * .5;
    point(point.x, point.y);
  }
}
 
class Point {
  float x, y;
 
  Point(float x, float y) {
    this.x = x;
    this.y = y;
  }
  Point(Point point) {
    this.x = point.x;
    this.y = point.y;
  }
}
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