Triangle [] t;
int playhead = 0;
void setup(){
  size(200, 200);
  smooth();
  t = new Triangle[10];
  for(int i = 0; i < t.length; i++){
    t[i] = new Triangle(random(width), random(height), random(width), random(height), random(width), random(height));
    t[i].alpha = random(255);
  }
}
void draw(){
  background(200);
  for(int i = 0; i < t.length; i++){
    t[i].draw();
    if(t[i].alpha <= 0){
	t[i] = new Triangle(random(width), random(height), random(width), random(height), random(width), random(height));
    }
  }
}
class Triangle{
  float x0,y0,x1,y1,x2,y2;
  float r,g,b,alpha;
  Triangle(float x0, float y0, float x1, float y1, float x2, float y2){
    this.x0 = x0;
    this.y0 = y0;
    this.x1 = x1;
    this.y1 = y1;
    this.x2 = x2;
    this.y2 = y2;
    alpha = 255f;
    r = random(200, 255);
    g = random(200, 255);
    b = random(200, 255);
  }
  void draw(){
    fill(r, g, b, alpha);
    stroke(0, alpha);
    triangle(x0, y0, x1, y1, x2, y2);
    alpha -= 0.5;
  }
}