Lock Keyframes
The 'Lock Keyframes' setting is controlled by clicking the button at the far right of the timetrack at the bottom of the canvas window. The icon has a picture of a padlock on it, with arrows pointing left and right, and will only be visible if your canvas has a non-zero end time. It will only be active if you're not currently using a tool which disables the timetrack, such as the bline tool or the draw tool.
{{l|Image: LockKeyframeButton.png]]
Clicking on the icon steps it through its 4 possible values:
| All Keyframes Locked (both arrows are lit up) | Image: Keyframe_lock_all_64.png]] |
| Past Keyframes Locked (left arrow is lit up) | Image: Keyframe_lock_past_64.png]] |
| Future Keyframes Locked (right arrow is lit up) | Image: Keyframe_lock_future_64.png]] |
| No Keyframes Locked (neither arrow is lit up) | Image: Keyframe_lock_none_64.png]] |
The setting has no effect unless the canvas is in {{l|Animate Editing Mode|animate editing mode]]. When the canvas is in animate editing mode, however, and a parameter is changed, {{l|Waypoints|waypoints]] will be created in whichever of the immediately preceding and immediately following {{l|Keyframe|keyframes]] are indicated by its value.
For example, if you are currently editing at 2s, and keyframes exist at 0s, 1s, 3s and 4s, then:
- If 'lock keyframes' is set to 'All Keyframes Locked', waypoints will be created at 1s and 3s.
{{l|Image: WaypointsLockAll.png]]
- If 'lock keyframes' is set to 'Past Keyframes Locked', a waypoint will be created at 1s.
{{l|Image: WaypointsLockFuture.png]]
- If 'lock keyframes' is set to 'Future Keyframes Locked', a waypoint will be created at 3s.
{{l|Image: WaypointsLockPast.png]]
- If 'lock keyframes' is set to 'No Keyframes Locked', no extra waypoints will be created.
{{l|Image: WaypointsLockNone.png]]
In all 4 cases, a waypoint will be created at the current time point, 2s.
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