Swap Fcurve

Each animation curve has a corresponding auxiliary function curve shown in dotted lines in the Fcurve window. This lets you keep a copy of the original function curve as you are modifying it.

The FcrvEdit->Swap Fcurve command in the Motion module lets you return to the previous Snapshot Fcurve version of your function curve (the auxiliary function curve). This is very useful for trying out different modifications on a function curve. It is essentially a way of "undoing" an edit to return to an earlier version.

When you choose this command, the auxiliary function curve is swapped with the currently selected function curve. When you choose this command again, the two function curves are swapped again. You can also perform this operation by selecting SWAP from the Fcurve window title bar.

The auxiliary function curves are always present during a session, even if you close the Fcurve window.

Note:

Some editing functions perform an automatic snapshot of the function curve, so you can compare the resulting curve with the original and return to it if you don't like the results. Use the FcrvEdit->Fit Spline to Fcurve, FcrvEdit->Expression, and the Channel->Sequence I/O commands to edit your results.

Procedure

1. Select a function curve.
2. Choose the FcrvEdit->Snapshot Fcurve command. This saves an auxiliary function curve.
3. Edit the function curve as desired. The auxiliary function curve, which has preserved the shape of the original function curve, appears as a dotted line.
4. To return to the auxiliary function curve, choose the FcrvEdit->Swap Fcurve command.

Last updated 02-apr-1998