Re: Bad clef change collision when alternating piano staves

[Ophir Lifshitz]

Hello,

Would it be possible to triage this bug I reported 3 months ago?

Thanks,
Ophir

On Fri, Jan 1, 2016 at 10:03 AM, Ophir Lifshitz <address@hidden>
wrote:

> Hello again,
>
> Has anyone been able to triage this bug yet?
>
> Thanks,
> Ophir
>
> On Wed, Oct 28, 2015 at 11:31 AM, Ophir Lifshitz <
> address@hidden> wrote:
>
>> I was browsing through recent bugs on the new tracker and found this one:
>> http://sourceforge.net/p/testlilyissues/issues/4642/
>>
>> I wonder whether it is related?
>>
>> Ophir
>>
>> On Tue, Oct 27, 2015 at 6:15 PM, Ophir Lifshitz <
>> address@hidden> wrote:
>>
>>> And so in that case, probably something like \hideNotes r ...
>>> \unHideNotes will be sufficient.
>>>
>>> Ophir
>>>
>>> On Tue, Oct 27, 2015 at 6:10 PM, Ophir Lifshitz <
>>> address@hidden> wrote:
>>>
>>>> Hello again,
>>>>
>>>> Yes, thank you Pierre. I believe that will work temporarily, but I'm
>>>> still mostly convinced it's a bug that needs to be fixed.
>>>>
>>>> For example, change the space s4. near the bottom of the file between
>>>> three eighth rests r r r (clef change is – mostly – properly spaced)
>>>> and two rests plus a space r r s (collision). It seems that Lilypond
>>>> can't detect the RH's note's presence in the 4th position of the LH staff,
>>>> and it only detects the presence of a LH note/rest starting somewhere in
>>>> the 4th position.
>>>>
>>>> Ophir
>>>>
>>>> On Tue, Oct 27, 2015 at 6:01 PM, Pierre Perol-Schneider <
>>>> address@hidden> wrote:
>>>>
>>>>> Oops, sorry, too fast reading...
>>>>>
>>>>> How about :
>>>>>
>>>>> \version "2.19.22"
>>>>> \new PianoStaff <<
>>>>>     \new Staff = "RH" \relative a' {
>>>>>         \clef treble
>>>>>         a8
>>>>>         \change Staff = "LH" \clef treble a_1
>>>>>         \change Staff = "RH"              a
>>>>>         \change Staff = "LH"
>>>>>         \tweak X-extent #'(0 . -2)
>>>>>         \tweak X-offset #-3.3 a_2
>>>>>         \clef bass
>>>>>         \change Staff = "RH"
>>>>>         \tweak X-extent #'(-7 . 1.3) a
>>>>>     }
>>>>>     \new Staff = "LH" \relative a, {
>>>>>         \clef bass
>>>>>         a8 s4. cis8_3
>>>>>     }
>>>>> >>
>>>>>
>>>>>
>>>>>
>>>>> 2015-10-27 22:37 GMT+01:00 Ophir Lifshitz <address@hidden>
>>>>> :
>>>>>
>>>>>> Hi Pierre,
>>>>>>
>>>>>> I'm afraid that override only makes the issue worse by shifting the
>>>>>> clef left. I might have been unclear, but the clef change belongs after
>>>>>> note 2 and directly before the sharped note 3, and not in the small space
>>>>>> between notes 1 and 2. Shifting it left makes it look like note 2 is
>>>>>> notated in bass clef, but it is not. Ultimately more space is needed on 
>>>>>> the
>>>>>> staff between notes 2 and 3 to fit the bass clef before note 3.
>>>>>>
>>>>>> Ophir
>>>>>>
>>>>>> On Tue, Oct 27, 2015 at 5:28 PM, Pierre Perol-Schneider <
>>>>>> address@hidden> wrote:
>>>>>>
>>>>>>> Hi Ophir,
>>>>>>>
>>>>>>> Try :
>>>>>>> \once\override Staff.Clef.X-extent = #'(0 . 3.5) \clef bass
>>>>>>>
>>>>>>> Cheers,
>>>>>>> ~Pierre
>>>>>>>
>>>>>>> 2015-10-27 22:05 GMT+01:00 Ophir Lifshitz <
>>>>>>> address@hidden>:
>>>>>>>
>>>>>>>> Hello all,
>>>>>>>>
>>>>>>>> I believe there is a bug in making space for clef changes. You can
>>>>>>>> find the
>>>>>>>> MWE here: http://lilybin.com/gs2oks/7
>>>>>>>>
>>>>>>>> The notes labeled 1 and 2 on the lower LH staff are both notated in
>>>>>>>> treble
>>>>>>>> clef. But because space wasn't made for the bass clef change, the
>>>>>>>> bass clef
>>>>>>>> misleadingly appears slightly before note 2. I would have instead
>>>>>>>> expected
>>>>>>>> to see a lot of space made between notes 2 and 3 where the clef can
>>>>>>>> fit
>>>>>>>> properly. The clef change before note 1 shows that Lilypond can
>>>>>>>> indeed make
>>>>>>>> space for clef changes.
>>>>>>>>
>>>>>>>> If not a bug, what is the best way to fix the collision?
>>>>>>>>
>>>>>>>> Thanks in advance,
>>>>>>>> Ophir
>>>>>>>>
>>>>>>>> P.S. The MWE was gradually simplified (1 <
>>>>>>>> http://lilybin.com/gs2oks/1> 2
>>>>>>>> <http://lilybin.com/gs2oks/2> 3 <http://lilybin.com/gs2oks/3> 4
>>>>>>>> <http://lilybin.com/gs2oks/4> current <http://lilybin.com/gs2oks/7>)
>>>>>>>> in
>>>>>>>> case anyone is curious for the source
>>>>>>>> <
>>>>>>>> https://www.youtube.com/watch?v=3Dw1Huh_Tfg&feature=youtu.be&t=2m51s
>>>>>>>> >.
>>>>>>>> Also attached are the source and an image in case of linkrot.
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> bug-lilypond mailing list
>>>>>>>> address@hidden
>>>>>>>> https://lists.gnu.org/mailman/listinfo/bug-lilypond
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>