int numShapes = 12;  //num on side of grid of shapes
  MyShape[] shape = new MyShape[numShapes*numShapes];
  MyGroup group;
  MyControl control;
  
  //*****************************************
  void setup(){
  
    size(300,400);
  
    for(int y=0; y<numShapes; y++){
      for(int x=0; x<numShapes; x++){
        shape[y*numShapes+x] = new MyShape(3,9.,30+x*20., 30+y*20.);
      }
    }
  
    group = new MyGroup(numShapes*numShapes, shape);
    group.move(10.,10.);
    control = new MyControl();
  }
  
  //*****************************************
  void draw( ){
    background(255);
    control.coordsDisplay.setText("x= " + mouseX + "   y= " + mouseY);
    group.draw();
  
  }
  
  int xfirst, yfirst;
  //*****************************************
  void mousePressed(){
  
    xfirst = mouseX;  // remember this point
    yfirst = mouseY;
  
    // Pick a shape
    if(control.part.equals("Group"))
          if(group.select((float)mouseX, (float)mouseY, 5.) == true){
             control.input.setText("Selected = Group");
             //break;
      }
    if(control.part.equals("Shape"))
       for(int i=0; i<group.numShapes; i++)
          if(group.shapes[i].select((float)mouseX, (float)mouseY, 10.) == true){
             control.input.setText("Selected shape = " + i);
             //break;
      }
    if(control.part.equals("Segment"))
          for(int ii=0; ii<group.numShapes; ii++)
        for(int j=0; j<group.shapes[ii].numSegments; j++){
          if(group.shapes[ii].segs[j].start.select((float)mouseX, (float)mouseY, 10.) == true)
             control.input.setText("Selected shape = " + ii + "Seg = " + j);
             //break;
      }
  }
  
  //*****************************************
  void mouseDragged(){
  
    int xoff = mouseX - xfirst;  // get the offset
    int yoff = mouseY - yfirst;
    MyPoint ref = new MyPoint(0.,0.);
  
    if(control.part.equals("Group")){
      ref = group.centroid();
      if(control.status.equals("Move"))
        group.move((float)xoff, (float)yoff);
      else if(control.status.equals("Rotate"))
        group.rotate((float)xoff, ref);
      else if(control.status.equals("Scale"))
        group.scale((float)mouseX/xfirst, (float)mouseY/yfirst, ref);
    }
    else if(control.part.equals("Shape")){
      for(int i=0; i<group.numShapes; i++)
        if(group.shapes[i].isSelected){
          ref = group.shapes[i].centroid();
          if(control.status.equals("Move"))
            group.shapes[i].move((float)xoff, (float)yoff);
          else if(control.status.equals("Rotate"))
            group.shapes[i].rotate((float)xoff, ref);
          else if(control.status.equals("Scale"))
            group.shapes[i].scale((float)mouseX/xfirst, (float)mouseY/yfirst, ref);
        }
    }
    else if(control.part.equals("Segment")){
      for(int ii=0; ii<group.numShapes; ii++)
        for(int j=0; j<group.shapes[ii].numSegments; j++){
          ref = group.shapes[ii].segs[j].centroid();
          if(group.shapes[ii].segs[j].start.isSelected == true)
            if(control.status.equals("Move"))
              group.shapes[ii].segs[j].move((float)xoff, (float)yoff);
            else if(control.status.equals("Rotate"))
              group.shapes[ii].segs[j].rotate((float)xoff, ref);
            else if(control.status.equals("Scale"))
              group.shapes[ii].segs[j].scale((float)mouseX/xfirst, (float)mouseY/yfirst, ref);
        }
    }
  
    xfirst = mouseX;  //remember this point
    yfirst = mouseY;
  
  }