// other methods and fields that deal with an Order
public decimal CalculatePrice(Person customer,
double taxAmount,
IEnumerable<Item> items,
IEnumerable<Discount> discounts,
params decimal[] basePrices)
{
return new OrderCalculator(customer, taxAmount, items, discounts, basePrices)
.Calculate();
}
public OrderCalculator(Person customer,
double taxAmount,
IEnumerable<Item> items,
IEnumerable<Discount> discounts,
params decimal[] basePrices)
{
Customer = customer;
TaxAmount = taxAmount;
Items = items;
Discounts = discounts;
BasePrices = basePrices;
}