public NoteAlterationType GetAlteration(Note note)
{
if (note.Pitch == null)
{
return(NoteAlterationType.Natural);
}
var proposedNoteAlteration = Alterations.IntToAlteration(note.Pitch.Alter);
var naturalKeyAlteration = Alterations.CreateFromFifths(_currentKey.Fifths).ForNote(note.Pitch.Step);
var currentKeyAlteration = _alterations.ForNote(note.Pitch.Step);
//Do nothing if natural
if (currentKeyAlteration == proposedNoteAlteration)
{
return(NoteAlterationType.Natural);
}
NoteAlterationType newAlterationType = NoteAlterationType.Natural;
switch (note.Pitch.Alter - Alterations.AlterationToInt(currentKeyAlteration))
{
case -2:
newAlterationType = NoteAlterationType.DoubleFlat;
break;
case -1:
newAlterationType = NoteAlterationType.Flat;
break;
case 0:
newAlterationType = NoteAlterationType.Natural;
break;
case 1:
newAlterationType = NoteAlterationType.Sharp;
break;
case 2:
newAlterationType = NoteAlterationType.DoubleSharp;
break;
}
if (note.Pitch.Alter == 0)
{
newAlterationType = NoteAlterationType.Natural;
}
_alterations.SetAlteration(note.Pitch.Step, newAlterationType);
if (note.Pitch.Alter == 0)
{
return(NoteAlterationType.Neutral);
}
return(newAlterationType);
}
public static Alterations CreateFromFifths(int fifths)
{
var alterations = new Alterations();
if (fifths < 0)
{
alterations.B = NoteAlterationType.Flat;
}
if (fifths < -1)
{
alterations.E = NoteAlterationType.Flat;
}
if (fifths < -2)
{
alterations.A = NoteAlterationType.Flat;
}
if (fifths < -3)
{
alterations.D = NoteAlterationType.Flat;
}
if (fifths < -4)
{
alterations.G = NoteAlterationType.Flat;
}
if (fifths < -5)
{
alterations.C = NoteAlterationType.Flat;
}
if (fifths < -6)
{
alterations.F = NoteAlterationType.Flat;
}
if (fifths > 0)
{
alterations.F = NoteAlterationType.Sharp;
}
if (fifths > 1)
{
alterations.C = NoteAlterationType.Sharp;
}
if (fifths > 2)
{
alterations.G = NoteAlterationType.Sharp;
}
if (fifths > 3)
{
alterations.D = NoteAlterationType.Sharp;
}
if (fifths > 4)
{
alterations.A = NoteAlterationType.Sharp;
}
if (fifths > 5)
{
alterations.E = NoteAlterationType.Sharp;
}
if (fifths > 6)
{
alterations.B = NoteAlterationType.Sharp;
}
return(alterations);
}
public void AddKeyChange(double noteTime, Key key, double lowEReference_Y)
{
if (key == null)
{
return;
}
_alterations = Alterations.CreateFromFifths(key.Fifths);
_currentKey = key;
if (key.Fifths < 0)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 2, ScoreLayoutDetails.DefaultNoteHeight * 0);
}
if (key.Fifths < -1)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 3.5, ScoreLayoutDetails.DefaultNoteHeight * 1);
}
if (key.Fifths < -2)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 1.5, ScoreLayoutDetails.DefaultNoteHeight * 2);
}
if (key.Fifths < -3)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 3, ScoreLayoutDetails.DefaultNoteHeight * 3);
}
if (key.Fifths < -4)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 1, ScoreLayoutDetails.DefaultNoteHeight * 4);
}
if (key.Fifths < -5)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 2.5, ScoreLayoutDetails.DefaultNoteHeight * 5);
}
if (key.Fifths < -6)
{
AddKeyItem(noteTime, FlatGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 0.5, ScoreLayoutDetails.DefaultNoteHeight * 6);
}
//support up to -11....
if (key.Fifths > 0)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 4, ScoreLayoutDetails.DefaultNoteHeight * 0);
}
if (key.Fifths > 1)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 2.5, ScoreLayoutDetails.DefaultNoteHeight * 1);
}
if (key.Fifths > 2)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 4.5, ScoreLayoutDetails.DefaultNoteHeight * 2);
}
if (key.Fifths > 3)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 3, ScoreLayoutDetails.DefaultNoteHeight * 3);
}
if (key.Fifths > 4)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 1.5, ScoreLayoutDetails.DefaultNoteHeight * 4);
}
if (key.Fifths > 5)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 3.5, ScoreLayoutDetails.DefaultNoteHeight * 5);
}
if (key.Fifths > 6)
{
AddKeyItem(noteTime, SharpGlyph(), lowEReference_Y - ScoreLayoutDetails.LineSpacing_Y * 2, ScoreLayoutDetails.DefaultNoteHeight * 6);
}
//support up to 11....
}
public KeyRenderHelper(RenderHelper renderHelper)
{
_renderHelper = renderHelper;
_currentKey = null;
_alterations = new Alterations();
}
