import java.awt.*;

public class mRectangle extends mPoint {

  // Instance variables:
  int w, h;

  // Constructor:
  public mRectangle(int _x, int _y, int _w, int _h) {
    // Invoke the constructor of the superclass mpoint:
    super(_x, _y);
    w = _w; h = _h;
  }

  // Encapsulate the instance variables:
  public void setDimension(int _w, int _h) {
    w = _w; h = _h;
  }
  
  // Override mPoint's checkBoundary method:
  public void checkBoundary(Rectangle rect) {
    // Calculate new location:
    int nx = x + dx, ny = y + dy;
    // Check if new location out of bounds:
    if ( (nx < rect.x) || (nx + w >= rect.x + rect.width) ) dx = -dx;
    if ( (ny < rect.y) || (ny + h >= rect.y + rect.height) ) dy = -dy;
  }

  // Override java.awt.Component.paint:
  public void paint(Graphics g) {
    // This is *not* mPoint's setColor method:
    g.setColor(super.color);
    g.fillRect(x, y, w, h);
  }
  
} // end of mRectangle class