class MyGroup  {
  MySolid [] solids;
  int nsolids;

  MyGroup (){
    solids = new MySolid[0];
  }
/*
  MyGroup(MySolid[] inSolids){
    numSolids = inSolids.length;
    solids = new MySolid[numSolids];
    for(int i=0; i<numSolids; i++)
      solids[i] = new MySolid(inSolids[i].faces);  

  }
*/
  void addSolids(MyPoint[] points, float hite){
    nsolids++;
    solids = (MySolid[])append(solids, new MySolid(points,hite));
  }

  //******************
  void draw(){
    for(int i=0; i<nsolids; i++)
      solids[i].draw();

  }

  //*************
  void rotatex (float angle, MyPoint ref) {
    for(int i=0; i<nsolids; i++)
      solids[i].rotatex(angle, ref);
  }

  //*************
  void rotatey (float angle, MyPoint ref) {
    for(int i=0; i<nsolids; i++)
      solids[i].rotatey(angle, ref);
  }

  //*************
  void rotatez (float angle, MyPoint ref) {
    for(int i=0; i<nsolids; i++)
      solids[i].rotatez(angle, ref);
  }

  //*************
  void scale(float xs, float ys, float zs, MyPoint ref) {
    for(int i=0; i<nsolids; i++)
      solids[i].scale(xs, ys, zs, ref);
  }

  //*************
  void move(float xoff, float yoff, float zoff){
    for(int i=0; i<nsolids; i++)
      solids[i].move(xoff, yoff, zoff);
  }
}