List of Source Files
PolyDraw.java -- the main applet/application class.
DrawCanvas.java -- most of the drawing functionality is here.
Controls.java -- sets up the control panel for the grid and for color selection.
Valuator.java -- used to encapsulate scrollbar + textfield combinations.
Toolbar.java -- subclasses Canvas to create an array of button-like tools.
Polygon.java -- defines the polygon objects, including their paint method.
DrawnObject.java -- a superclass of Polygon, included to allow later incorporation of other kinds of objects than polygons.
PDPoint.java -- subclasses Point, adding facilities for being selected and displaying themselves