Huron & SNAP Documentation

↓ To change a track’s properties
Manipulating Trajectories
↓ Selecting trajectories
↓ Cutting, copying, and pasting
trajectories
↓ To clear a trajectory
↓ To merge two or more
trajectories
↓ To split a trajectory
• Select Properties from the Track menu.
THE SIMULATION TOOLS
• Select trajectories by clicking on them with the left mouse
button. Use Shift or Ctrl to select and unselect multiple
trajectories.
— or —
Click the left mouse button on an empty piece of track and
drag the focus rectangle over the trajectories you want selected.
These operations use the standard Windows clipboard to
serialise and retrieve trajectories and are available either from
the Edit menu or by right-clicking on the desired trajectory.
When a trajectory is cut or copied, a copy of its parent tracks is
also made. This serves two purposes: the first is to provide a
record of where the trajectory originated from; the second is to
have a record of the track properties, in case a new track will be
created to paste into.
If there are trajectories selected when the paste command is
issued then the clipboard trajectories will replace the selected
ones. Conversely, if no trajectories are selected then the Paste
dialog will appear, prompting for a track and a time to begin
pasting from. This will be the new position of the first
trajectory on the clipboard. The first trajectory is always the
earliest selected trajectory in the first track containing selected
trajectories.
If trajectories will be pasted past the end of the scene then the
scene will be extended to accommodate them. This does not
apply past the beginning of a scene. Similarly, if the
trajectories will be pasted past the limit of tracks then more
tracks will be created.
• Select Clear from the Edit menu.
• Select Merge from the Edit menu.
Merging two or more trajectories is allowed when the
trajectories are located on the same track and when there are no
unselected trajectories between those to be merged.
1. Select Split from the Edit menu.
2. Enter a time at which to split the trajectory. The time must
be within the selected trajectory.
The trajectory will be split into two, with all events up to and
including the split time going into the first new trajectory and
all remaining events going into the second.
HURON TECHNICAL MANUAL PAGE 129