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3.7 Selection Groups<br />
Selection groups are used to combine various objects into a<br />
group, so that selecting any one object in the group has the<br />
same effect as selecting all of the objects in the group. Grouping<br />
related objects in selection groups makes it easier in<br />
GENER and CERUN to select and hide (or unhide) a component<br />
of the machine.<br />
For example, in the sample machine created to this point, the<br />
Shroud and Base objects could be grouped together into a<br />
single selection group, so that at run-time the entire base of the<br />
machine could easily be hidden by a single click followed by a<br />
Simulation»Hide Selection (Ctrl B shortcut) menu selection.<br />
Creating <strong>Virtual</strong> <strong>Machine</strong> Models with Quest<br />
Selection Groups<br />
Selection groups can be found in the navigator window under the Groups»Selection header. You<br />
create a new group by dragging an object to the Groups»Selection header. You add objects to an<br />
existing group by dragging them to the group header. You can also drag an entire collision or<br />
exclusion group to the selection group header to<br />
create a new selection group. You can create as<br />
many selection groups as are necessary to best<br />
represent the grouping of objects of your model.<br />
Note though that the same object cannot appear in<br />
multiple selection groups. Objects and entire<br />
groups can be deleted to remove the selection relationships. Finally, you can open the Properties<br />
of a selection group and disable the visibility property of the group, so that the group starts off<br />
hidden in GENER and CERUN.<br />
The grouping of objects can make it impossible to select and edit the properties of a particular<br />
object in the simulation window if it is grouped with other objects. For that reason, in QUEST<br />
only, selection grouping can be toggled on and off using the Simulation»Group Selection menu<br />
bar function (and also using the Group button shown circled above on the VM Construct<br />
toolbar).<br />
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