// returns any closed PL calculated on position basis (not per share)
/// <summary>
/// Adjusts the position by applying a new position.
/// </summary>
/// <param name="pos">The position adjustment to apply.</param>
/// <returns></returns>
public decimal Adjust(Position pos)
{
if (this.hasSymbol && (this.Symbol != pos.Symbol))
{
throw new Exception("Invalid Position: Position MUST have a symbol.");
}
if (!pos.isValid)
{
throw new Exception("Invalid position adjustment, existing:" + this.ToString() + " adjustment:" + pos.ToString());
}
if (pos.Flat)
{
return(0); // nothing to do
}
decimal pl = BoxMath.ClosePL(this, pos.ToTrade());
if (this.Flat)
{
this.price = pos.price; // if we're leaving flat just copy price
}
else if ((pos.Side && this.Side) || (!pos.Side && !this.Side)) // sides match, adding so adjust price
{
this.price = ((this.price * this.size) + (pos.price * pos.size)) / (pos.size + this.size);
}
this.size += pos.size; // adjust the size
if (this.Flat)
{
price = 0; // if we're flat after adjusting, size price back to zero
}
return(pl);
}
/// <summary>
/// Gets the closed points (points = PL on per-share basis) for given symbol/account.
/// </summary>
/// <param name="symbol">The symbol.</param>
/// <param name="account">The account.</param>
/// <returns>points</returns>
public decimal GetClosedPT(string symbol, Account account)
{
Position pos = new Position(symbol);
decimal points = 0;
if (!MasterTrades.ContainsKey(account.ID))
{
return(points);
}
foreach (Trade t in MasterTrades[account.ID])
{
points += BoxMath.ClosePT(pos, t);
pos.Adjust(t);
}
return(points);
}
