Use the following functions
to slip the starting frame of a clip backwards or forwards using
the slip channel. In effect, the displayed frame in a layer's clip
will be the animation's current frame number plus the slip value.
For example, a slip value of -15 holds the clip at the first frame
and repeats it 15 times before the clip begins. In this way, you
can create a freeze frame effect with one layer while animating
another layer. A slip value of 10 begins the clip at frame 11. See
Modifying Surfaces.
pingpong
Returns a slip value
that makes a clip continuously cycle forwards and backwards. The
result should usually be assigned to the slip channel of a layer.
| Syntax: |
pingpong(length) |
| Arguments: |
- length is the number of frames to display before
starting to play backwards. This is usually the length of the original
clip.
|
| Examples: |
- pingpong(10) returns a slip value that
makes a clip continuously play in a forward and backward cycle from
frame 1 to frame 10.
- pingpong(30) yields the following curve:
|
repeat
Returns a slip value
that makes a clip continuously repeat forwards. The result should
usually be assigned to the slip channel of a layer.
| Syntax: |
repeat(length) |
| Arguments: |
- length is the number of frames to display before
repeating from the beginning. This is usually the length of the original
clip.
|
| Examples: |
- repeat(10) returns a slip value that
makes a clip repeat forwards from frame 1 to frame 10.
- repeat(30) yields the following curve:
|
repeatback
Returns a slip value
that makes a clip continuously repeat backwards. The result should
usually be assigned to the slip channel of a layer.
| Syntax: |
repeatback(length) |
| Arguments: |
- length is the number of frames from the beginning
to display backwards before repeating. This is usually the length
of the original clip.
|
| Examples: |
- repeatback(10) returns a slip value that
makes a clip repeat backwards from frame 10 to frame 1.
- repeatback(30) yields the following curve:
|
frametoslip
Returns a slip value
that makes a clip display at a given timebar frame. If the given
frame number is constant, the resulting clips will freeze at that
frame. The result should usually be assigned to the slip channel
of a layer.
| Syntax: |
frametoslip(TimebarFrame) |
| Arguments: |
- TimebarFrame is the timebar frame at
which to display the clip.
|
| Examples: |
- frametoslip(10) returns a slip value
that makes a clip freeze at frame 10.
- frametoslip(frame / 2) returns a slip
value that makes a clisplay at half the normal speed.
- frametoslip(14) yields the following curve:
|
