int generator::getNoteFrequencyByIndex(const Chord& tonicChord, int index){
// 1-indexation here
int octave = 0;
while (index < 1){
octave--;
index += 7;
}
while (index > 7){
octave++;
index -= 7;
}
int baseFrequency = tonicChord.getNote().getFrequency() + octave * 12;
// FixMe: do not use switches for this
//later
if (tonicChord.getMode() == MAJOR){
switch(index){
case 1:
return baseFrequency + 0;
case 2:
return baseFrequency + 2;
case 3:
return baseFrequency + 4;
case 4:
return baseFrequency + 5;
case 5:
return baseFrequency + 7;
case 6:
return baseFrequency + 9;
case 7:
return baseFrequency + 11;
default:
return baseFrequency + 12;
}
} else {
switch(index){
case 1:
return baseFrequency + 0;
case 2:
return baseFrequency + 2;
case 3:
return baseFrequency + 3;
case 4:
return baseFrequency + 5;
case 5:
return baseFrequency + 7;
case 6:
return baseFrequency + 8;
case 7:
return baseFrequency + 10;
default:
return baseFrequency + 12;
}
}
}
