static void Main(string[] args)
        {
            var circle    = new Circle(4);
            var rectangle = new Rectangle(1, 3);
            var triangle  = new Triangle(new Point(2, 2), new Point(4, 4), new Point(4, 2));

            var rectangleClient = new RectangleClient(rectangle);
            var circleClient    = new CircleClient(circle);
            var triangleClient  = new TriangleClient(triangle);

            var perimeterVisitor = new PerimeterVisitor();
            var areaVisitor      = new GetAreaVisitor();
            var drawVisitor      = new DrawVisitor();
            var visitors         = new IVisitor[] { perimeterVisitor, areaVisitor, drawVisitor };

            foreach (var visitor in visitors)
            {
                visitor.Visit(circleClient);
                visitor.Visit(rectangleClient);
                visitor.Visit(triangleClient);
            }
            Console.WriteLine("Perimeters");
            Console.WriteLine(rectangleClient.Perimeter);
            Console.WriteLine(circleClient.Perimeter);
            Console.WriteLine(triangleClient.Perimeter);

            Console.WriteLine();

            Console.WriteLine("Areas");
            Console.WriteLine(rectangleClient.Area);
            Console.WriteLine(circleClient.Area);
            Console.WriteLine(triangleClient.Area);
        }
Beispiel #2
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        public void Visit(RectangleClient client)
        {
            var length  = Math.Max(client.Figure.Width, client.Figure.Height);
            var picture = new Bitmap(length, length);

            using (var graphics = Graphics.FromImage(picture))
            {
                graphics.DrawRectangle(Pens.Blue, 0, 0, client.Figure.Width, client.Figure.Height);
            }

            client.Picture = picture;
        }
Beispiel #3
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 public void Visit(RectangleClient client)
 {
     client.Area = client.Figure.Width * client.Figure.Height;
 }
Beispiel #4
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 public void Visit(RectangleClient client)
 {
     client.Perimeter = (client.Figure.Width + client.Figure.Height) * 2;
 }