static void CalculateDrawingArea(IAmVisitable visitable)
{
var visitor = new DrawingAreaCalculationVisitor();
visitable.Accept(visitor);
var rect = visitor.Rect;
Console.WriteLine("Drawing area for {0}: ({1},{2}) ({3},{4})", visitable.GetType().Name, rect.Left, rect.Top, rect.Right, rect.Bottom);
}
static void CalculateTotalDrawingArea(IEnumerable <IAmVisitable> visitables)
{
var visitor = new DrawingAreaCalculationVisitor();
foreach (var visitable in visitables)
{
visitable.Accept(visitor);
}
var rect = visitor.Rect;
Console.WriteLine("Total drawing area: ({0},{1}) ({2},{3})", rect.Left, rect.Top, rect.Right, rect.Bottom);
}