Drive Playback (LogiX node)
| Drive Playback | ||
|---|---|---|
 | ||
| Inputs | ||
| Impulse | StartDrive | |
| Impulse | StopDrive | |
| Impulse | ForceResync | |
| Float | NormalizedPosition | |
| Float | MaximumPositionError | |
| Float | Speed | |
| Bool | Play | |
| Bool | Loop | |
| Outputs | ||
| SyncPlayback | DriveTarget | |
| Impulse | OnStartDrive | |
| Impulse | OnStopDrive | |
| Bool | IsDriving | |
The Drive Playback node can be used to directly control the rate of playback of the DriveTarget. Since this is a drive, it is possible to localize the speed of playback, or even whether the clip is played at all, for different users.
Usage
Inputs
When an impulse is received at StartDrive, the node will start driving the playback state of the DriveTarget. This gives exclusive control over the playback state to the Drive Playback node. Control will be taken over if the DriveTarget was previously driven by another source.
When an impulse is received at StopDrive, the node will stop driving the playback state of the DriveTarget. Playback will continue in the same state as it was just before driving stopped.
The ForceResync input will force the normalised position of the DriveTarget to the NormalizedPosition input value when an impulse is received.
The NormalizedPosition input controls the rate/state of playback. Default is 0.
The MaximumPositionError value is the maximum number of seconds that the DriveTarget playback position can deviate from the absolute playback position corresponding to NormalizedPosition input. The normalized playback position will be reset to the NormalizedPosition if the absolute playback position error is greater than MaximumPositionError. Default is 0.
The Speed input scales the rate of playback relative to the rate of change of the NormalizedPosition input, i.e. rate of normalized position change in the DriveTarget is equal to rate of change of NormalizedPosition multiplied by the Speed. If this has a value of 1, the default, the rate of change of DriveTarget playback normalized position is equal to the rate of change of NormalizedPosition. At higher, lower, or negative values the DriveTarget normalized playback position will start to deviate from the NormalizedPosition, resulting in altered playback speed, until the absolute playback position error is greater than the MaximumPositionError.
The Play input controls whether the DriveTarget playback position changes if NormalizedPosition is changing. Default is False.
The Loop input controls whether playback will restart from the beginning if the DriveTarget's normalized position is greater than or equal to 1. Default is False.
Outputs
The OnStartDrive output fires an impulse when an impulse is received at StartDrive. This continues the impulse chain which arrived at StartDrive.
The OnStopDrive output fires an impulse when an impulse is received at StopDrive. This continues the impulse chain which arrived at StopDrive.
The IsDriving output is True if the DriveTarget's playback is being driven by the Drive Playback node, otherwise False.
Examples
Node Menu
| Actions | ||||||
|---|---|---|---|---|---|---|
| Back | -- | ++ | Drive | Drive Playback | Tween | Write |
| Write Latch | Write Ref | Write Ref Latch | ||||