To
change rotation interpolation in existing curves
- In the Graph Editor or Dope
Sheet, select the curve whose rotation interpolation
you want to change.
You can change the rotation
interpolation type only on rotation channels that have keyframes
on all three channels (rotateX, rotateY, rotateZ).
In addition, because the rotateX, rotateY and rotateZ channels always
share the same interpolation type, changing interpolation for a
single channel such as rotateX, automatically changes rotateY and
rotateZ as well.
- Select Curves > Change Rotation
Interp and select the interpolation type you want from
the list. See
Change Rotation Interp for
descriptions of the options.
Example
To change Euler interpolated rotation
curves of a sphere to Quaternion interpolation
- Select the sphere that has animated rotation
curves with Independent Euler interpolation.
For this example, the Euler rotation animation occurs from frames
1-200 (0 to 1020 degrees).
- Open the Graph Editor.
- Select the sphere’s rotation curves.
- In the Graph Editor menu
bar, select Curves > Change Rotation Interp, then
select one of the Quaternion interpolation types.
The rotation interpolation
of the selected curves changes to Quaternion.
NoteIf you switch the
rotation curves back to Independent Euler,
the curves will not return to what they were when they were Euler.
Instead, the resulting curves will be the Euler versions of the
Quaternion solution. Since Quaternions solve for the shortest solution
to a position, the multiple rotations that existed with the original
Euler interpolation were deleted when you switched to Quaternion.
Therefore, switching back to Euler doesn't return the rotations
to 1020,1020,1020, it returns the curves to the Euler equivalent
of the Quaternion solution (which in this example is 60, 60, 60).
