Slur bug - Downward slur originating on downflag note.

Topic: Slur bug - Downward slur originating on downflag note. (Read 4056 times) previous topic - next topic

Slur bug - Downward slur originating on downflag note.

2009-10-08 06:51 am

IMO, all these are wrong. The slur start should avoid the flag, either by starting at the end of the stem or starting mid-stem, to the right of the flag.

Quote from: the finder of bad slurs

!NoteWorthyComposerClip(2.0,Single)
|Note|Dur:8th,Slur|Pos:3|Opts:Slur=Downward
|Note|Dur:4th,Dotted|Pos:-1
|Note|Dur:16th,Slur|Pos:3|Opts:Slur=Downward
|Note|Dur:8th,Dotted|Pos:-1
|Note|Dur:16th,Slur|Pos:3|Opts:Slur=Downward
|Note|Dur:8th,Dotted|Pos:-1
|Note|Dur:64th,Slur|Pos:3|Opts:Slur=Downward
|Note|Dur:32nd,Dotted|Pos:-1
!NoteWorthyComposerClip-End

Re: Slur bug - Downward slur originating on downflag note.

Reply #1 – 2009-10-08 07:01 am

I concur.

Re: Slur bug - Downward slur originating on downflag note.

Reply #2 – 2009-10-08 09:19 am

I concur, too.
NWC slurs (mus6.zip) may not have the slur shape that fits, but using this can make slurs get better by controlling the size of the font, I think.

Re: Slur bug - Downward slur originating on downflag note.

Reply #3 – 2009-10-09 04:45 am

The bug seems to be related to this dubious concept:

Quote from: NoteWorthy Online – 2008-12-23 03:20 pm

The absence of a stem obstruction on the receiving end of a slur permits the origin of the slur to start near the notehead of a stem down note. Put another way, the absence of stem obstructions on both the origin and termination point of a slur allows the slur to be drawn from the notehead positions.

At best, the slur start should be drawn farther from the notehead and if there are intervening notes, it may be best to draw it from the stem. I say "dubious" since, as implemented, it is hardly worth the complication and rarely yields good results.

Quote

!NoteWorthyComposerClip(2.0,Single)
|Note|Dur:4th,Slur|Pos:1|Opts:Slur=Downward
|Note|Dur:4th,Slur|Pos:0
|Note|Dur:4th|Pos:-1
!NoteWorthyComposerClip-End

IMO, downward slurs starting on downstem notes should be drawn relative to the stem, rather than the notehead.

Re: Slur bug - Downward slur originating on downflag note.

Reply #4 – 2009-10-09 05:32 am

I concur, but note that all of these examples could be improved by using upward instead of downward slurs. (I realize there are some situations where upward slurs would be impossible.)

Bill

Re: Slur bugs on RestChords

Reply #5 – 2009-10-09 02:43 pm

Quote from: William Ashworth – 2009-10-09 05:32 am

I concur, but note that all of these examples could be improved by using upward instead of downward slurs. (I realize there are some situations where upward slurs would be impossible.)

Not just impossible, but musically incorrect. Slurs need to refer to the correct voice.

Whole note RestChords have some problems. Here:

Quote

!NoteWorthyComposerClip(2.0,Single)
|Note|Dur:Half|Pos:-3
|Note|Dur:4th,Slur|Pos:-3|Opts:Slur=Upward
|Note|Dur:4th,Slur|Pos:-1
|Bar
|RestChord|Dur:4th|Opts:Stem=Down|Dur2:Whole|Pos2:0
|Note|Dur:4th|Pos:-4|Opts:Stem=Down
|Note|Dur:4th|Pos:-3|Opts:Stem=Down
|Note|Dur:4th|Pos:-2|Opts:Stem=Down
|Bar
|Note|Dur:Half|Pos:-3
|Note|Dur:4th,Slur|Pos:-3|Opts:Slur=Upward
|Note|Dur:4th,Slur|Pos:-1
|Bar
|Note|Dur:Whole|Pos:0
!NoteWorthyComposerClip-End

the first slur ends right of center on the whole note.

This one is contrived, but:

Quote

!NoteWorthyComposerClip(2.0,Single)
|RestChord|Dur:4th,Slur|Opts:Stem=Up,Slur=Downward|Dur2:Whole|Pos2:-3
|Note|Dur:4th,Slur|Pos:3|Opts:Stem=Down
|Note|Dur:Half|Pos:1|Opts:Stem=Down
|Bar
|RestChord|Dur:4th,Slur|Opts:Stem=Up,Slur=Downward|Dur2:Whole|Pos2:-3
|Note|Dur:4th,Slur|Pos:3|Opts:Stem=Up
|Note|Dur:Half|Pos:1|Opts:Stem=Up
!NoteWorthyComposerClip-End

the first slur starts left of center.

It would suit my purposes if the slur would start/end on the "Whole note RestChord stem" if 'Override stem length' was checked, and start/end at the center if 'Override stem length' was not not checked. I'm not really requesting that, since it might strike some folks as a bit weird.

IMO, slurs should ignore the Rest in a RestChord. In general, slurs do not start or end on rests.
I do think it a bug that, under normal circumstances, slurs do not start/end somewhere near the center of a whole note.

Re: Slur bug - Downward slur originating on downflag note.

Reply #6 – 2009-10-09 11:55 pm

I hate when the slur goes like this...

Quote

!NoteWorthyComposerClip(2.0,Single)
|Note|Dur:4th,Slur|Pos:-1
|Note|Dur:4th|Pos:0
!NoteWorthyComposerClip-End