The pick interaction has two modes, allowing the selection of either hits and tracks or detectors. The desired mode is selected from the box on the panel of the Pick tab in the interaction control (3.1.3 Interaction Control) of the Control Window.
Hits and Tracks
If the picking mode is set to hits and tracks:
Clicking the left mouse button in a canvas pad will move the cursor to the nearest data item in the window and will show information about the picked data item on the output display (3.1.5 Output Display) of the Control Window.
Clicking the right mouse button will move the cursor to the nearest appearance of the previously picked data item in the canvas pad where the mouse button is pressed. In the case of
a hit, which is drawn once on a canvas pad, the cursor is moved to that hit,
a hit, which is drawn twice on a canvas pad (V-plot) the cursor is moved to the closer of the two,
a track, the cursor is moved to that point on the track which is closest to the current cursor position.
Any canvas pad in which a mouse button is clicked, is automatically popped up.
Detectors
If the picking mode is set to detectors:
Clicking the left mouse button in a canvas pad on a detector element will print the name of the element on the output display (3.1.5 Output Display) of the Control Window.
Lists and Picking
The pick interaction may be used for the interactive manipulation of lists (3.3.4 Lists Window) by using a modifier key while performing the pick. The available modifier keys are:
Table 4.5. Modifier keys for pick interaction
Modifier Key | Action |
---|---|
A + left-click | Add the data item to be picked to the currently selected list node |
C + left-click | Clear highlighted, colours the previously picked data item with its default colour |
I + left-click | Ignore, picked item is moved into the invisible list under List manager and is ignored unless removed from this list or list manager is re-set, useful to mask hot calo cells for instance |
V + left-click | Set primary vertex, if picked item is simulated vertex (SimVertex) or reconstructed vertex (RecVertex), the position of the picked vertex is considered by Atlantis the primary vertex (see Projections→η/φ projection menu) |