public TFunc this[Region from, RegionDirection direction, Region to]
{
get
{
TFunc result;
if (Functions.TryGetValue(new TransferFunctionKey(from, direction, to), out result))
{
return(result);
}
return(default(TFunc));
}
set
{
var key = new TransferFunctionKey(from, direction, to);
if (Functions.ContainsKey(key))
{
Functions[key] = value;
}
else
{
Functions.Add(new TransferFunctionKey(from, direction, to), value);
}
}
}
public TransferFunctionKey(Region from, RegionDirection direction, Region to)
{
From = from;
To = to;
Direction = direction;
}