public static void Main(string[] args)
{
var triangle = new Triangle(new List <Point>()
{
new Point(0, 0), new Point(5, 5), new Point(0, 5)
});
var rectangle = new Rectangle(new List <Point>()
{
new Point(0, 0), new Point(0, 5), new Point(5, 5), new Point(5, 0)
});
var rhombus =
new Rhombus(new List <Point> {
new Point(0, 1), new Point(2, 0), new Point(4, 1), new Point(2, 2)
});
var areaVisitor = new GetAreaVisitor();
triangle.Accept(areaVisitor);
Console.WriteLine(areaVisitor.Result);
rectangle.Accept(areaVisitor);
Console.WriteLine(areaVisitor.Result);
rhombus.Accept(areaVisitor);
Console.WriteLine(areaVisitor.Result);
Console.WriteLine();
var drawVisitor = new DrawingVisitor(new Point(5, 5));
triangle.Accept(drawVisitor);
rectangle.Accept(drawVisitor);
rhombus.Accept(drawVisitor);
var polygonLoveVisitor = new PolygonLoveVisitor();
triangle.Accept(polygonLoveVisitor);
rectangle.Accept(polygonLoveVisitor);
rhombus.Accept(polygonLoveVisitor);
}