house.h

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// Class Name: house
//
// Purpose:
//
//   Provides a simple drawable object that has a roof, a body, two windows,
//   and a door.
//
// Model:
//
//   The origin for this object refers to the bottom left corner of the
//   body of the house (meaning that the left roof is drawn at a position
//   relatively negative to the house origin).
//
// Methods:
//
//   house(origin, draw_on)
//       The constructor accepts an "origin" for the house and a target
//       window to "draw_on".
//
//   draw()
//       Plots the house on its current canvas.
//
//   erase()
//       Draws the house in its current canvas's background color.
//
//   dimensions()
//       Returns a rectangle bounding the entire space used by the house.
//       NOTE: the origin is actually inside the dimensions(), not at the
//       bottom left.
//
//   height()
//       Returns the height of the house in pixels.
//
//   width()
//       Returns the width of the house in pixels.
//
//   set_origin(origin)
//       Sets a new origin for the house with respect to its current canvas.
//
//   set_canvas(draw_on)
//       Connects the house to a new canvas for drawing.

#ifndef HOUSE_CLASS
#define HOUSE_CLASS

#include "fill_box.h"
#include "visiline.h"

class house
{
public:
  house(const c_point &origin = c_point(0, 0), canvas *draw_on = NIL);

  void draw();
  void erase();

  c_rectangle dimensions();
  int height();
  int width();

  void set_origin(const c_point &origin);
  void set_canvas(canvas *draw_on);

private:
  visible_line left_roof;
  visible_line right_roof;
  visible_line roof_base;
  filled_box house_body;
  filled_box win_1;
  filled_box win_2;
  filled_box door;
  c_point my_origin;
  canvas *my_canvas;
};

#endif

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