glPushMatrix(); // to save the current matrix
glTranslated(scale*b->x[0], scale*b->x[1], scale*b->x[2]);
glutSolidSphere (BALL_SIZE, 10, 10);
glPushMatrix(); // to save the current matrix
glTranslated(scale*b->x[0], scale*b->x[1], scale*b->x[2]);
glutSolidSphere (BALL_SIZE, 10, 10);