// Yennifer Tejada
// Flock of birds


String title = " Flock of birds";
String author = " Yennifer Tejada";

// declare the variables
float x;
float y;
float w;
float h;

int n;

// random RGB 
float r;
float g;
float b;



void setup()
{
  size(600,500);
  r= random(255);
  g= random(255);
  b= random(255);
  reset();
   
  
}

void reset()
{
  n = int (random(3,10));
  x = random(width/2);
  y = random(height/2);
  w = random(10,70);
  h = w/2;
}

void draw()
{
  background(r,g,b);
  
  fill(35,80,250);
  flock(n,x,y,w,h);
  x += random(20);
  y = y + 10 - random(20);
  fill(0);
  text(title, width/2,30);
  text (author, 20, height -20);
}

// draw the flock of birds
void flock(int n, float x,float y,float w,float h)
{
  float xx = x;
  float hh = h * 3;
  float ww = w;
  bird(xx,y,w,h);
  
  xx = xx - 2*w;
  for (int j=1; j<n; j++)
  {
    bird(xx,y-hh,w,h);
    bird(xx,y+hh,w,h);
    xx = xx - 2*w;
    ww *= 0.9;
    hh = hh + h*2;
  }
}


  void bird(float x, float y, float w, float h)
  {
    triangle(x,y,x-w,y-h,x-w,y+h);
  }
  
  void keyPressed()
  {
    if (key== 'r') 
    reset();
  }