private IList <IStringInstrumentNotePosition> stringNotePositionForString(IInstrumentString currentString,
IChord chord, int sti, int typicalFingerSemiToneStretch)
{
var ret = new List <IStringInstrumentNotePosition>();
// TODO : investigate how far should we really accept open strings
if (sti == 0 && chord.Notes.Any(n => n.Equals(currentString.OpenStringNote)))
{
ret.Add(new StringInstrumentNotePosition
{
StringPosition = currentString.Position,
StringNotePosition = 0,
Note = currentString.OpenStringNote
});
}
for (int i = sti, j = 0; i < currentString.StringNotes.Count && j < typicalFingerSemiToneStretch; i++, j++)
{
var currentNotePosition = currentString.StringNotes[i];
if (chord.Notes.Any(chordNote => chordNote.Equals(currentNotePosition.Note)))
{
ret.Add(new StringInstrumentNotePosition
{
Note = currentNotePosition.Note,
StringNotePosition = currentNotePosition.Position,
StringPosition = currentString.Position
});
}
}
return(ret);
}
/// <inheritdoc/>
public int GetNoteInterval(int startString, int startFret, int endString, int endFret, out List <Exception> errorList)
{
IInstrumentString startStringRef = null;
IInstrumentString endStringRef = null;
errorList = new List <Exception>();
if (!Strings.Any(str => str.Number == startString || str.Number == endString))
{
if (!Strings.Any(str => str.Number == startString))
{
errorList.Add(new ArgumentException($"There is no string number: {startString}", nameof(GuitarString.Number)));
}
if (!Strings.Any(str => str.Number == endString))
{
errorList.Add(new ArgumentException($"There is no string number: {endString}", nameof(GuitarString.Number)));
}
}
else
{
startStringRef = Strings.Single(str => str.Number.Equals(startString));
endStringRef = Strings.Single(str => str.Number.Equals(endString));
if (startFret > startStringRef.MaxFret)
{
errorList.Add(new ArgumentException($"Fret: {startFret} doesn't exist on String: {startString}.", nameof(GuitarString.MaxFret)));
}
if (endFret > endStringRef.MaxFret)
{
errorList.Add(new ArgumentException($"Fret: {endFret} doesn't exist on String: {endString}.", nameof(GuitarString.MaxFret)));
}
}
if (errorList.Count() == 0)
{
var startNote = startStringRef.GetNote(startFret);
var endNote = endStringRef.GetNote(endFret);
return(GetNoteInterval(startNote, endNote));
}
else
{
return(0);
}
}