Opening Max 2010 and seeing mostly the same curve editor tools since Max 8 (which I’ve been using up until now) got me to give it a much needed update. Unzip this to the Max directory with folder names enabled. Look in the monsterBlues category. (Works best as a tool bar for the curve editor and then save the curve editor layout.)
I put together some animated gif of what the buttons do…
Grow and Shrink key selection.
Click Continue to see more animated demos:
Extend Selection: Selects all keys on selected curves.
StepSelection: Selects the next or previous keys.
Flatten: Selected keys get same value as first selected key.
CTRL pressed averages all the keys.
SHFT pressed give all the value of the last key.
Loop: Mirrors the last keys key’s tangent to the first keys. (By anim range)
Break Down: Move the keys 10% closer to the next or previous key.
Build Tangents: Exagerates or subdues the tangents.
Flow: Mirrors the tangents of the selected keys to the previous and next keys.
Isolate: Removes unselected curves from the view.
Nudge: Moves keys to forward or back. Use CTRL, and SHFT as modifiers.
SnapScale: Moves the scale origin to the first selected key.
Split: Duplicates a keys and made the time between them linear.
There is also a SpaceEvenly and SpaceToInterval tool.