| Re: [frogs] chord-name-engraver plus capo |
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On 29/08/10 00:42, Carl Sorensen wrote:
>
>
> On 8/28/10 1:39 PM, "Neil Puttock" <n.puttock@xxxxxxxxx> wrote:
>
>> On 28 August 2010 19:02, Carl Sorensen <c_sorensen@xxxxxxx> wrote:
>>
>>> Why not just define a C++ function
>>>
>>> transpose_pitch (int semitones)
>>>
>>> return Pitch (0, - int (semitones / 2), - (semitones mod 2));
>>>
>>>
>>> to handle the transposition? Or perhaps even make this part of the
>>> Pitch class -- i.e. add a transposed_semitones function to Pitch, so then
>>> you could just call p->transposed_semitones (capo)?
>> The tranposition is subjective (it's mainly flat, but goes sharp for F
>> and C), so that wouldn't be possible without also telling the function
>> how to behave for certain tranpositions.
> Yes, but I suspect that this is probably not correct at all for most chords.
> It's defined for a C chord, but probably won't work correctly for any other
> chords in the key of C.
>