public static int GetMiddleCIndexFromClef(this Model.MeasureItems.Attributes.ClefMusicXML clef)
{
int index = 6; // G L=2
switch (clef.Sign)
{
case Model.MeasureItems.Attributes.ClefSignMusicXML.G:
var lineG = int.Parse(clef.Line);
index = 10 - ((lineG - 1) * 2) + 4 + (int.Parse(clef.ClefOctaveChange) * 7);
break;
case Model.MeasureItems.Attributes.ClefSignMusicXML.F:
var lineF = int.Parse(clef.Line);
index = 10 - ((lineF - 1) * 2) - 4 + (int.Parse(clef.ClefOctaveChange) * 7);
break;
case Model.MeasureItems.Attributes.ClefSignMusicXML.C:
var lineC = int.Parse(clef.Line);
index = 10 - ((lineC - 1) * 2) + (int.Parse(clef.ClefOctaveChange) * 7);
break;
case Model.MeasureItems.Attributes.ClefSignMusicXML.percussion:
index = 6;
break;
case Model.MeasureItems.Attributes.ClefSignMusicXML.none:
index = 6;
break;
}
return(index);
}
/// <summary>
/// Converts pitch value from PitchMusciXML object into index of position at staff line using clef info
/// </summary>
/// <param name="pitch">PitchMusicXML object to convert</param>
/// <param name="clef">ClefMusisXML object as helper for calculations</param>
/// <returns>Index of position at Staff Line </returns>
public static int GetPitchIndexStaffLine(this Model.MeasureItems.PitchMusicXML pitch, Model.MeasureItems.Attributes.ClefMusicXML clef)
{
int pitchOctave = int.Parse(pitch.Octave);
int pitchStep = (int)pitch.Step; //0 = A, +5 from C
int clefOctave = clef.GetMiddleCIndexFromClef();
int caclulatedStaffLineShift = (clefOctave - (pitchStep + 2)) - (-7 * (4 - pitchOctave));
return(caclulatedStaffLineShift);
}
