public IActionResult ChordBlock(Key key, Alteration alteration)
{
var viewModel = new ChordBlockViewModel();
viewModel.Chords = _chordService.GetChords(new Note(key, alteration), _chordQualityService.GetAll()).ToList();
return(PartialView("_ChordBlock", viewModel));
}
public ChordSelectorViewModel GetChordSelectorViewModel()
{
var chordSelectorViewModel = new ChordSelectorViewModel();
chordSelectorViewModel.Keys = _keyService.GetAll();
chordSelectorViewModel.Alterations = _alterationService.GetAllAvailableForChord();
chordSelectorViewModel.ChordQualities = _chordQualityService.GetAll();
return(chordSelectorViewModel);
}
public IEnumerable <Chord> GetChordsStrict(Note n1, Note n2, Note n3, List <ChordQuality> allChordQualities = null)
{
allChordQualities = allChordQualities ?? _chordQualityService.GetAll().ToList();
if (Math.Abs((int)n1.Alteration) < 2)
{
var intervalsN1 = from a in _noteService.GetIntervalsBetween2Notes(n1, n2)
from b in _noteService.GetIntervalsBetween2Notes(n1, n3)
select new[] { a, b };
foreach (var intervals in intervalsN1)
{
var chordQualities = allChordQualities.Where(cq =>
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[0]) &&
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[1]));
foreach (var chordQuality in chordQualities)
{
yield return(GetChord(n1, chordQuality));
}
}
}
if (Math.Abs((int)n2.Alteration) < 2)
{
var intervalsN2 = from a in _noteService.GetIntervalsBetween2Notes(n2, n1)
from b in _noteService.GetIntervalsBetween2Notes(n2, n3)
select new[] { a, b };
foreach (var intervals in intervalsN2)
{
var chordQualities = allChordQualities.Where(cq =>
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[0]) &&
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[1]));
foreach (var chordQuality in chordQualities)
{
yield return(GetChord(n2, chordQuality));
}
}
}
if (Math.Abs((int)n3.Alteration) < 2)
{
var intervalsN3 = from a in _noteService.GetIntervalsBetween2Notes(n3, n1)
from b in _noteService.GetIntervalsBetween2Notes(n3, n2)
select new[] { a, b };
foreach (var intervals in intervalsN3)
{
var chordQualities = allChordQualities.Where(cq =>
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[0]) &&
cq.ChordQualityIntervals.Select(cqi => cqi.Interval).Contains(intervals[1]));
foreach (var chordQuality in chordQualities)
{
yield return(GetChord(n3, chordQuality));
}
}
}
}