[Bluemusic-users] Line Update

[Steven Y. <ste...@gm...>]

Hi All,

Still in the process of implementing resolution on Parameter
Automation and in so doing I had to take a detour and rework the
underlying Line and LinePoint classes.  What I have done is that in
the past, LinePoints held their Y values always from 0-1.0, and then
their absolute values from within min and max for the line when needed
would be calculated.  I've decided now that for whatever reason I had
done this, that I now think it was a design mistake.  So, I have gone
and redone all the code that uses lines and linePoints to assume Y
values are now absolute values instead of relative.  (X values are a
little more complicated, but they are using relative in the older
client classes and absolute in parameter automation).  I am pretty
sure I have also covered all the migration issues from the old to the
new value system (serialization and also preserving preset values for
BSB/ObjectBuilder objects).

Anyways, the point I am at now is what to do when the user sets min
and max for the line.  Previously, because y values were always 0-1.0,
changing max and min wouldn't change the values that the points held
internally, but their calculated values would change.  So a point
previously say at max value 1.0, if max was changed on the line to
10.0, the point would suddenly have 10.0 for a value (values were
rescaled).

What I am thinking is that it might be useful to have two options
appear when min and max are modified: rescale (works as in the
previous behavior) or truncate (if prevoius value is now outside of
the new boundary, truncate its value to the boundary).  I think have
the new second option would be nice if you're working and decided that
you needed "just a little more room on a parameter".

All of this new code is just local at the moment and I will probably
redo the min/max options tomorrow morning and check in.

If anyone has made use of the Line and LinePoint classes in either
scripts or Plugins, apologies for the change but I think it's for the
best.  (If there's any issues, please contact me so I can make sure
the that classes will do as much work for you in migration as they
can).

Thanks!
steven