public static KeyRelation MusicKeyAndChordDegreeToKeyRelation(MusicKey key, CD chordDegree)
{
MusicKeyInfo mki = new MusicKeyInfo(key, KeyRelation.I調);
KeyRelation kr = KeyRelation.Unknown;
switch (chordDegree)
{
case CD.I: kr = KeyRelation.I調; break;
case CD.II: /* 長調の時はII調、短調の時はない。 */
if (mki.IsMajor())
{
kr = KeyRelation.II調;
}
break;
case CD.III: kr = KeyRelation.III調; break;
case CD.IV: kr = KeyRelation.IV調; break;
case CD.V: kr = KeyRelation.V調; break;
case CD.VI: kr = KeyRelation.VI調; break;
case CD.VII: /* 短調の時はVII調、長調の時はない。*/
if (mki.IsMinor())
{
kr = KeyRelation.VII調;
}
break;
case CD.V_V:/* 長調のV調のV調は＋II調、短調のV調のV調は△II調 */
if (mki.IsMajor())
{
kr = KeyRelation.PII調;
}
else
{
kr = KeyRelation.TII調;
}
break;
default: System.Diagnostics.Debug.Assert(false); break;
}
return(kr);
}
private void MXOutputPartHeader(TextWriter w, string partId, ClefType clef)
{
w.WriteLine(" <part id=\"{0}\">", partId);
w.WriteLine(" <measure number=\"0\">");
w.WriteLine(" <attributes>");
var mki = new MusicKeyInfo(chordSaves[0].musicKey, KeyRelation.I調);
w.WriteLine(" <key>");
w.WriteLine(" <fifths>{0}</fifths>", mki.FlatNum() - mki.SharpNum());
w.WriteLine(" <mode>{0}</mode>", mki.IsMajor() ? "major" : "minor");
w.WriteLine(" </key>");
w.WriteLine(" <time>");
w.WriteLine(" <beats>2</beats>");
w.WriteLine(" <beat-type>2</beat-type>");
w.WriteLine(" </time>");
w.WriteLine(" <clef>");
switch (clef)
{
case ClefType.G2:
w.WriteLine(" <sign>G</sign>");
w.WriteLine(" <line>2</line>");
break;
case ClefType.F4:
w.WriteLine(" <sign>F</sign>");
w.WriteLine(" <line>4</line>");
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
w.WriteLine(" </clef>");
w.WriteLine(" </attributes>");
w.WriteLine(" <sound tempo=\"{0}\"/>", tempo);
}