public Scale(Note tonic, IntervalPattern pattern, int octaves)
{
if (tonic == null)
{
throw new ArgumentNullException("tonic");
}
if (pattern == null)
{
throw new ArgumentNullException("pattern");
}
if (octaves <= 0)
{
throw new ArgumentOutOfRangeException("octaves");
}
this.scale.Add(tonic);
Note current = tonic;
for (int octave = 0; octave < octaves; ++octave)
{
foreach (Interval v in pattern.Values)
{
current = current + v;
this.scale.Add(current);
}
}
}
public IntervalPattern this[WellKnownIntervalPattern pattern]
{
get
{
if (!this.scaleLookup.ContainsKey(pattern))
{
throw new ArgumentOutOfRangeException("pattern", "Unknown interval pattern");
}
return(IntervalPattern.FromString(this.scaleLookup[pattern]));
}
}
public IntervalPattern Pattern()
{
var pattern = new IntervalPattern();
var previous = this.Root();
foreach (var note in this.chord.Skip(1))
{
var interval = note - previous;
pattern.Add(interval);
previous = note;
}
return(pattern);
}
public static IntervalPattern FromString(string pattern)
{
if (string.IsNullOrEmpty(pattern))
{
throw new ArgumentNullException("pattern");
}
string[] words = pattern.Split(new char[] { ',' });
var ip = new IntervalPattern();
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;
}
ip.Add(new Interval(value));
}
}
return(ip);
}
public Scale(Note tonic, IntervalPattern pattern)
: this(tonic, pattern, 1)
{
}
public Scale(IntervalPattern pattern)
: this(new Note(40), pattern, 1) // TODO : default to middle c ???
{
}