public double old(int milliseconds = 0) // Single index only
{
if (milliseconds <= 0)
{
milliseconds = Manager.DefaultOffset;
}
var prevFrameIndex = IndexFromOffset(FrameOffset(milliseconds));
return(Manager.History[prevFrameIndex, FeatureIndexes.First()]);
}
public double delta(int startMilliseconds, int endMilliseconds) // Single index only
{
var featureIndex = FeatureIndexes.First();
double start;
if (startMilliseconds <= 0)
{
start = this[featureIndex].current;
startMilliseconds = 0;
}
else
{
start = this[featureIndex].old(startMilliseconds);
}
return(start / this[featureIndex].old(endMilliseconds - startMilliseconds));
}
// Incomplete
public double dupeDelta(int milliseconds = 0) // Single index only
{
var featureIndex = FeatureIndexes.First();
return(this[featureIndex].min(milliseconds) / this[featureIndex].max(milliseconds, milliseconds * 2));
}