internal KeyValuePair <Key, double>?FirstEventWhenLessOrEqual(Key from, double threshold)
{
if (Predicates.More(from, To))
{
return(null);
}
if (Minimum > threshold)
{
return(null);
}
KeyValuePair <Key, double>?result = null;
if ((null != FirstChild) && (null != SecondChild))
{
result = FirstChild.FirstEventWhenLessOrEqual(from, threshold);
if (null == result)
{
result = SecondChild.FirstEventWhenLessOrEqual(from, threshold);
}
return(result);
}
Debug.Assert(null == FirstChild);
Debug.Assert(null == SecondChild);
if ((Open <= threshold) && (Predicates.MoreOrEqual(From, from)))
{
result = new KeyValuePair <Key, double>(From, Open);
}
else if (Close <= threshold)
{
result = new KeyValuePair <Key, double>(To, Close);
}
return(result);
}