Пример #1
0
        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);
        }
Пример #2
0
        public static Note FromName(string note, MidiOctaveFormat format)
        {
            const int MinimumTextLength = 2;

            if (String.IsNullOrEmpty(note) || note.Length < MinimumTextLength)
            {
                throw new NoteFormatException("Note text is too short");
            }

            if (!Char.IsLetter(note.First()))
            {
                throw new NoteFormatException("Note must start with a letter");
            }

            Accidental accidental = Accidental.FromString(note.Substring(1, 1));

            int NamePartLength = 1;

            if (accidental != null)
            {
                NamePartLength = 2;
            }

            string scaleDegreeText = note.Substring(0, NamePartLength).ToUpper();

            int scaleDegree = 0;

            try
            {
                scaleDegree = NoteValues[scaleDegreeText];
            }
            catch (KeyNotFoundException e)
            {
                throw new NoteFormatException(scaleDegreeText, e);
            }

            string octaveText  = note.Substring(NamePartLength);
            int    octaveValue = Convert.ToInt32(octaveText, CultureInfo.CurrentCulture);

            return(new Note(scaleDegree, octaveValue, format));
        }
Пример #3
0
        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);
        }