// Pendulum Paint
// Daniel Shiffman <http://www.shiffman.net>
// Nov 19, 2005

// Messed with my original pendulum example from http://www.shiffman.net/itp/classes/nature/
ArrayList a;


float xoff = 0.0;
float yoff = 100.0;
void setup() {
  size(200,200);
  framerate(30);
  smooth();
  colorMode(RGB,255,255,255,255);

  a = new ArrayList();

  float y = 0;
  for (int i = 0; i < 8; i++) {
    // Make a new Pendulum with an origin location and armlength
    Pendulum p = new Pendulum(new Vector3D(width/2,y),50.0f);
    p.theta=radians(random(-180,180));
    a.add(p);
    y+=50;
    
  }
  background(0);
}

void draw() {

  //background(0);
  fill(50,5);
  rect(0,0,width,height);


  for (int i = 0; i < a.size(); i++) {
    Pendulum p = (Pendulum) a.get(i);
    if (i > 0) {
      Pendulum prev = (Pendulum) a.get(i-1);
      p.origin = prev.loc.copy();
    }
    p.go();
  }

  //xoff += 0.01;
  //yoff += 0.01;
  
  //saveFrame();
  
}

void mousePressed() {
  for (int i = 0; i < a.size(); i++) {
    Pendulum p = (Pendulum) a.get(i);
    p.clicked(mouseX,mouseY);
  }
}

void mouseReleased() {
  for (int i = 0; i < a.size(); i++) {
    Pendulum p = (Pendulum) a.get(i);
  p.stopDragging();
  }
}