[keyframe] dragging a curve segment between two keyframes should only move that segment, not the whole curve
@jeff
Submitted by Jeff F.T. Assigned to Jeff F.T. @jeff
Description
As the title says. The reason for this is that you never want to move the whole curve (well, unless we add it as a shift+drag), or if you did, you already did in the beginning before adding keyframes, or you can drag the few segments independently.
Anyway, the reason I'm saying dragging a segment between two keyframes is this (frequent) use case:
- have a blank curve
- add 4 keyframes near the middle, like so:
------------------------A----------------
Now, if you drag down segment A, you will have its two keyframes move in unison and keep the line straight, thus creating a plateau, like this:
-------------------\ /-----------
*---A---*/
This kind of manipulation is insanely useful for doing fast changes in soundtrack volume.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=589813