You can copy the motion
of a biped footstep sequence, and paste it either at the end or
into the middle of another footstep sequence. This technique is
You can use splicing
to build an extended, or cyclic, motion sequence out of shorter
sequences. You can also copy footsteps from one biped and paste
them onto another biped with this technique.
Splicing footsteps makes
use of a footstep buffer to store footstep
positions and keys. The buffer is a temporary area in memory where
footsteps are stored.
Use motion splicing
when you want to edit segments of a single footstep-based animation.
To build longer animations by connecting finished BIP files, use
To copy footsteps to the buffer:
- Turn on (Footstep
- Select a series of footsteps.
- On the Footsteps Operations rollout,
To edit the footstep buffer:
You can edit the footstep
buffer only when footsteps have been copied to the buffer, as described
in the previous procedure.
- On the Biped rollout Modes group, click (Buffer
Mode). This button is active only when there are footsteps in the
The viewports now display
the footsteps in the footstep buffer, rather than the footsteps
in the currently activated footstep sequence.
- Edit footsteps or motion keys as you
normally would – by moving and rotating footsteps, or turning on
Auto Key and moving and rotating parts of the biped skeleton.
NoteYou can’t splice
(copy and paste) footsteps while in Buffer mode.
If you load a BIP file by clicking Load File
on the Biped rollout while Buffer mode is active, the footstep buffer
is replaced with the motion in the BIP file.
- Click Buffer Mode to turn it off.
Now you can splice the edited buffer by pasting
To splice the footstep buffer:
- On the Footstep Operations rollout, click (Paste Footsteps).
The footsteps from the buffer appear in their
- Click (Select
And Move) to position the first pasted footstep at the point where
you want to splice. When you move the first pasted footstep over
an activated footstep of the same side, right or left, the activated
footstep turns red to indicate splicing is possible.
This step is usually easiest to do in a Top
NoteIf you deselect the pasted footsteps by
clicking elsewhere in a viewport, no paste occurs and the pasting
- When you have moved the buffer footsteps
to the desired location, release the mouse.
The contents of the footstep buffer are placed
over the active footsteps. The first footstep in the buffer replaces
the footstep that turned red, and the rest of the buffer footsteps
- The footstep that turned red and the
remaining original footsteps now appear in the viewports. They will
be near the activated footsteps, in their saturated colors. They
can now be moved and pasted onto the end of the spliced motion,
which will, in effect, perform an insert of the buffer motion. The
red footstep and is following footsteps can also be pasted anywhere
in the footstep sequence. If you pasted onto the last footstep,
this step does not occur.
If you don’t want to append the leftover footsteps,
simply click anywhere in the viewport to dismiss them.
WarningIf any footstep in
the buffer overlaps in time with a footstep previous to the one
onto that you are pasting, a message appears and the paste will
not be performed.
TipTo create a cycle of a motion with alternating
footsteps, you must copy and paste at least three footsteps.