Selection Trees
The selection tree is a tabbed control bar which displays a variety of hierarchical views of the structure of the model, as defined by the CAD application in which the model was created.
By default there are four tabs, called Standard Compact Properties and Sets
"Standard" displays the default tree hierarchy, including all instancing. The contents of this tab can be sorted alphabetically by right-clicking on any item in the tree and selecting Scene->Sort . It is not possible to undo this action.
"Compact" displays a simplified version of the "Standard" hierarchy, omitting various items. You can control the level of complexity of this tree using the Select options (see for more information).
"Properties" displays the hierarchy based on the items' properties. This enables simple manual searching of the model by item property. See for a much more powerful way of searching the model for items with certain properties.
"Sets" simply shows the same view as the selection sets control bar.
Naming of items reflects the names from the original CAD application, wherever possible.
There are several different tree icons representing the types of item that make up the structure of a model:
A model, such as a drawing file or design file.
A layer or level.
A group, such as a block definition from AutoCAD or cell definition from MicroStation.
An instanced group, such as an inserted block from AutoCAD or cell from MicroStation.
If in the imported file the instance was unnamed, JetStream names the instance to
match its child's name.
An item of geometry, such as a polygon.
An instanced item of geometry, such as an instance from 3D Studio.
A composite object. A single CAD object that is represented in JetStream by a group of geometry items.
A search. Behind the scenes, JetStream is searching the model for all items
with a property of this type and sets up the find specification to repeat this
search if the selection set is saved. See for
more information on this.
Each of these item types can be Hidden (gray), Unhidden (dark blue) or Required (red).
Note
If a group is selected as Hidden or Required then all instances of that item will be hidden or required. If you wish to operate on a single occurrence of an item then you should make the instanced group (the level above, or the "parent", in the hierarchy) Hidden or Required.
You can use the selection tree in combination with the main navigation window to select items into the current selection, which is highlighted in both the selection tree and the main navigation window.
Note
Using the Shift and Control keys while selecting items in a selection tree will do the standard Windows multiple selection: Control allows multiple selection item by item and Shift allows multiple selection between the first and last items selected.
If you have the Clash Detective plugin, the selection trees will be used for selecting items for the clash tests.
The selection trees are also used inside the Find Items control bar for the ability to refine your searches better. See for more information.
Note
Additional customised selection tree tabs can be added by using the JetStream API.