/// <summary>
/// Returns True if connecting two provided data point based on cross direction is possible otherwise False
/// </summary>
/// <param name="bars"></param>
/// <param name="firstPointIndex">The first point index in market series</param>
/// <param name="secondPointIndex">The second point index in market series</param>
/// <param name="direction">The line direction, is it on up direction or low direction?</param>
/// <returns>bool</returns>
public static bool IsBodyConnectionPossible(this Bars bars, int firstPointIndex, int secondPointIndex, Direction direction)
{
if (firstPointIndex >= secondPointIndex)
{
throw new ArgumentException("The 'firstPointIndex' must be less than 'secondPointIndex'");
}
double slope = bars.GetBodyBaseSlope(firstPointIndex, secondPointIndex, direction);
double firstPoint;
if (direction == Direction.Up)
{
firstPoint = bars.GetBarBodyLow(firstPointIndex);
}
else if (direction == Direction.Down)
{
firstPoint = bars.GetBarBodyHigh(firstPointIndex);
}
else
{
throw new InvalidOperationException("Invalid Direction Type");
}
var counter = 0;
for (var i = firstPointIndex + 1; i <= secondPointIndex; i++)
{
counter++;
double iPoint;
if (direction == Direction.Up)
{
iPoint = bars.GetBarBodyLow(i);
if (iPoint < firstPoint + slope * counter)
{
return(false);
}
}
else if (direction == Direction.Down)
{
iPoint = bars.GetBarBodyHigh(i);
if (iPoint > firstPoint + slope * counter)
{
return(false);
}
}
}
return(true);
}
/// <summary>
/// Returns the amount of slope between two level in a market series based on bar bodies
/// </summary>
/// <param name="bars"></param>
/// <param name="firstPointIndex">The first point index in market series</param>
/// <param name="secondPointIndex">The second point index in market series</param>
/// <param name="direction"></param>
/// <returns>double</returns>
public static double GetBodyBaseSlope(this Bars bars, int firstPointIndex, int secondPointIndex, Direction direction)
{
double firstPoint, secondPoint;
if (direction == Direction.Up)
{
firstPoint = bars.GetBarBodyLow(firstPointIndex);
secondPoint = bars.GetBarBodyLow(secondPointIndex);
}
else if (direction == Direction.Down)
{
firstPoint = bars.GetBarBodyHigh(firstPointIndex);
secondPoint = bars.GetBarBodyHigh(secondPointIndex);
}
else
{
throw new InvalidOperationException("Invalid Direction Type");
}
return((secondPoint - firstPoint) / (secondPointIndex - firstPointIndex));
}
