public static ChordPattern FromString(string pattern)
{
if (string.IsNullOrEmpty(pattern))
{
throw new ArgumentNullException("pattern");
}
string[] words = pattern.Split(new char[] { ',' });
var cp = new ChordPattern();
foreach (string word in words.Where(w => !String.IsNullOrWhiteSpace(w)))
{
string candidate = word.Trim();
Accidental accidental = Accidental.FromString(candidate);
if (accidental != null)
{
candidate = candidate.Substring(1);
}
int value = Convert.ToInt32(candidate, CultureInfo.CurrentCulture);
if (value > 0)
{
if (accidental != null)
{
value += accidental.Value;
}
var degrees = new ScaleDegree[]
{
ScaleDegree.First,
ScaleDegree.Second,
ScaleDegree.Third,
ScaleDegree.Fourth,
ScaleDegree.Fifth,
ScaleDegree.Sixth,
ScaleDegree.Seventh,
ScaleDegree.Octave,
ScaleDegree.FlatNinth,
ScaleDegree.Ninth,
ScaleDegree.SharpNinth,
ScaleDegree.Eleventh,
ScaleDegree.SharpEleventh,
ScaleDegree.Thirteen
};
if (value < 1 || value > degrees.Length)
{
throw new ArgumentOutOfRangeException("pattern", string.Format(CultureInfo.CurrentCulture, "Don't understand chord degree {0} -> {1}", words, value));
}
cp.Add(degrees[value - 1]);
}
}
return(cp);
}
/*
* Major Chords
*
* Major 1-3-5
* maj7 1-3-5-7
* maj9 1-3-5-7-9
* maj11 1-3-5-7-9-11
* maj13 1-3-5-7-9-11-13
* maj6 1-3-5-6
* maj6/9 1-3-5-6-9
* maj7 6/9 1-3-5-6-7-9
* maj#5 1-3-#5
* majb5 1-3-b5
* maj7#5 1-3-#5-7
* maj7b5 1-3-b5-7
* maj9b5 1-3-b5-7-9
* maj9#5 1-3-#5-7-9
* maj11b5 1-3-b5-7-9-11
* maj11#5 1-3-#5-7-9-11
* maj13b5 1-3-b5 7-9-11-13
* maj13#5 1-3-#5-7-9-11-13
* maj7b9 1-3-5-7-b9
* maj7#9 1-3-5-7-#9
* maj9#11 1-3-5-7-9-#11
* maj11b13 1-3-5-7-9-11-b13
* maj11#13 1-3-5-7-9-11-#13
* maj11b9 1-3-5-7-b9-11
* maj11#9 1-3-5-7-#9-11
* maj13#11 1-3-5-7-9-#11-13
* maj13b9 1-3-5-7-b9-11-13
* maj13#9 1-3-5-7-#9-11-13
*
* Minor Chords
* minor 1-b3-5
* m7 1-b3-5-b7
* m9 1-b3-5-b7-9
* m11 1-b3-5-b7-9-11
* m13 1-b3-5-b7-9-11-13
* m6 1-b3-5-6
* m6/9 1-b3-5-6-9
* m7#5 1-b3-#5-b7
* m7b5 1-b3-b5-b7
* m9#5 1-b3-#5-b7-9
* m11#5 1-b3-#5-b7-9-11
* m13#5 1-b3-#5-b7-9-11-13
* m7b9 1-b3-5-b7-b9
* m9#11 1-b3-5-b7-9-#11
* m9b11 1-b3-5-b7-9-b11
* m11b13 1-b3-5-b7-9-11-b13
* m11b9 1-b3-5-b7-b9-11
* m13b11 1-b3-5-b7-9-b11-13
* m13#11 1-b3-5-b7-9-#11-13
* m13b9 1-b3-5-b7-b9-11-13
* m13#9 1-b3-5-b7-#9-11-13
* m(maj7) 1-b3-5-7
* m(maj9) 1-b3-5-7-9
* m(maj11) 1-b3-5-7-9-11
* m(maj13) 1-b3-5-7-9-11-13
*
* Dominant Chords
* 7 1-3-5-b7
* 9 1-3-5-b7-9
* 11 1-3-5-b7-9-11
* 13 1-3-5-b7-9-11-13
* 7b5 1-3-b5-b7
* 7#5 1-3-#5-b7
* 9b5 1-3-b5-b7-9
* 9#5 1-3-#5-b7-9
* 11b5 1-3-b5-b7-9-11
* 11#5 1-3-#5-b7-9-11
* 13b5 1-3-b5-b7-9-11-13
* 13#5 1-3-#5-b7-9-11-13
* 7b9 1-3-5-b7-9
* 7#9 1-3-5-b7-9
* 9#11 1-3-5-b7-9-#11
* 11b13 1-3-5-b7-9-11-b13
* 11b9 1-3-5-b7-b9-11
* 11#9 1-3-5-b7-#9-11
* 13#11 1-3-5-b7-9-#11-13
* 13b9 1-3-5-b7-b9-11-13
* 13#9 1-3-5-b7-#9-11-13
* 7 6/9 1-3-5-6-b7-9
*
* Diminished Chords
* dim 1-b3-b5
* dim7 1-b3-b5-bb7
* dim9 1-b3-b5-bb7-9
* dim11 1-b3-b5-bb7-9-11
*
*/
public ChordPattern this[WellKnownChord pattern]
{
get
{
if (!this.chordLookup.ContainsKey(pattern))
{
throw new ArgumentOutOfRangeException("pattern", "Unknown interval pattern");
}
return(ChordPattern.FromString(this.chordLookup[pattern]));
}
}
// root and scale degree list
public Chord(Scale scale, ChordPattern pattern)
{
if (scale == null)
{
throw new ArgumentNullException("scale");
}
if (pattern == null)
{
throw new ArgumentNullException("pattern");
}
foreach (var degree in pattern.Values)
{
this.chord.Add(scale[degree]);
}
}