Cours:PooProcessing2Corrige

Balle b1;
Balle b2;
void settings()
{
  size(500,500);
}
void setup()
{
  b1=new Balle();
  b2 = new Balle(); 
}
void draw()
{
  background(0,255,0);
  b1.deplacer();
  b1.rebondir();
  b1.afficher();
  b2.deplacer();
  b2.rebondir();
  b2.afficher();
}

class Balle
{
  int rayon;
  int x;
  int y;
  int dx;
  int dy;
  color couleur;
  Balle()
  {
    rayon=20;
    couleur=color(0, 0, 255);
    x=width/2;
    y=height/2;
    dx=3;
    dy=4;
  }
  Balle (int _dx, int _dy) {
    rayon=20;
    couleur=color(0, 0, 255);
    x=width/2;
    y=height/2;
    dx=_dx;
    dy= _dy;
  }
  void afficher()
  { 
    fill(couleur);
    ellipse(x, y, rayon*2, rayon*2);
  }
  void deplacer()
  {
    x=x+dx;
    y=y+dy;
  }
  void rebondir()
  {
    if (x>= width-rayon)
    {
      dx=-dx;
    }
    if (x<=rayon)
    {
      dx=-dx;
    }
    if (y>= height-rayon)
    {
      dy=-dy;
    }
    if (y<=rayon)
    {
      dy=-dy;
    }
  }
}