Re: Envelope remembers... stereo problem (?)

Gale Andrews wrote:
> | From Martyn Shaw <martynshaw99googlemail.com> 
> | Sun, 03 Feb 2008 22:28:03 +0000
> | Subject: [Audacity-devel] Envelope remembers...
stereo problem (?)
>>> The user has given replicable steps now 
>>> and it's do with dragging
>>> a point to left of time zero and releasing (by
accident in his case), 
>>> which then leaves the two tracks with
inconsistent envelopes.
>> I have now seen this, read through the code and had
a bit of a play. 
>> I see what is happening:
>> When you drag an envelope point on one track the
code looks for a 
>> linked track.  If there is one and there is an
envelope at that point 
>> in time, it mimics the same behaviour there.  This
is useful when the 
>> second track has gaps between clips (and so
sometimes no envelope). 
>> Worth a play with to see how it works.  What our
user is seeing is 
>> that once they are left of zero there isn't an
envelope in the linked 
>> track, so nothing happens to the envelope.  Quite
logical really (?)
> 
> Yes logical, and works well when there is no envelope
in one of the 
> tracks at the corresponding time point. But is there a
way to tell the
> code that if the point is dragged left off the
waveform, it should not
> behave as if there is no linked track? I agree with the
user, it's easy 
> to release the button by accident. As doing so removes
the point that
> was being dragged (as I would expect), I would also
expect that the 
> envelopes of both tracks would remain consistent , just
as they do if
> the point is dragged outside the waveform in an up,
down or right 
> direction. 

Hopefully this is now fixed.  Once a point is being dragged
the point 
on the linked track is held on to and continues vertical
dragging and 
deletion (LR, TB) with the original track, even if you are
outside the 
bounds of the linked clip.  Comments?

Martyn

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| From Martyn Shaw <martynshaw99googlemail.com> 
| Sun, 17 Feb 2008 01:21:51 +0000
| Subject: [Audacity-devel] Envelope remembers... stereo
problem (?)
> Gale Andrews wrote:
> > | From Martyn Shaw <martynshaw99googlemail.com> 
> > | Sun, 03 Feb 2008 22:28:03 +0000
> > | Subject: [Audacity-devel] Envelope remembers...
stereo problem (?)
> >> I see what is happening:
> >> When you drag an envelope point on one track
the code looks for a 
> >> linked track.  If there is one and there is an
envelope at that point 
> >> in time, it mimics the same behaviour there. 
This is useful when the 
> >> second track has gaps between clips (and so
sometimes no envelope). 
> >> Worth a play with to see how it works.  What
our user is seeing is 
> >> that once they are left of zero there isn't an
envelope in the linked 
> >> track, so nothing happens to the envelope. 
Quite logical really (?)
> > 
> > Yes logical, and works well when there is no
envelope in one of the 
> > tracks at the corresponding time point. But is
there a way to tell the
> > code that if the point is dragged left off the
waveform, it should not
> > behave as if there is no linked track? I agree
with the user, it's easy 
> > to release the button by accident. As doing so
removes the point that
> > was being dragged (as I would expect), I would
also expect that the 
> > envelopes of both tracks would remain consistent ,
just as they do if
> > the point is dragged outside the waveform in an
up, down or right 
> > direction. 
> 
> Hopefully this is now fixed.  Once a point is being
dragged the point 
> on the linked track is held on to and continues
vertical dragging and 
> deletion (LR, TB) with the original track, even if you
are outside the 
> bounds of the linked clip.  Comments?

Hi Martyn

Had a quick look. All OK as far as I can see except I still
get the 
dragged points remaining at the right edge when I drag off
right 
and release (even if I drag to the edge of the screen). This
is 
Unicode Release. Why are we seeing different behaviour? 
  
I noticed one oddity - when you drag up or down to remove,
the 
set of points to left of the dragged point greys out once
you have
dragged outside the waveform, until you release. Cosmetic
but could 
be a bit confusing?

Sorry if this is a stupid question but why does Change
Speed, Pitch or 
Tempo destroy the envelope points when even an amplitude
modifying
effect does not?  



Gale 

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