Adobe READER 8 User Manual page 120

See also
"Examples of Model Rendering modes" on page 115
Model Tree panel overview
The Model Tree panel appears in the navigation pane on the left side of the work area. You can also open the Model
Tree by clicking the Toggle Model Tree button
model and choosing Show Model Tree.
Note: Using the Model Tree requires version 7.0.7 or later of either Acrobat or Adobe Reader. Users with earlier versions
can interact with 3D models but not with the Model Tree.
The Model Tree has three panes, each of which displays a specific type of information or controls.
Shows the tree structure of the 3D object. For example, a 3D object depicting a car may have separate
Upper pane
groups of objects (called nodes) for the chassis, engine, and wheels. In the top pane of the Model Tree, you can move
through the hierarchy and select, isolate, or hide various parts.
Lists the views that the document author has defined for that 3D object. After you change the view,
Middle pane
such as by isolating and rotating a part, you can simply click one of the listed views to return the 3D model to a saved
state. See "Set 3D views" on page 117
Displays properties or metadata information, if any, about the part. You cannot edit this information for
Lower pane
3D objects in Reader.
Note: You can change the default behavior for the Model Tree by choosing Edit > Preferences (Windows) or Reader >
Preferences (Mac OS), selecting 3D under Categories, and then choosing an option on the Open Model Tree On 3D
Activation menu.
In some instances, the author of the PDF can set up a 3D model so that clicking it automatically displays the Model Tree.
Hide, isolate, and change the appearance of parts
Some 3D models are composed of individual parts. You can use the Model Tree to hide or isolate parts, zoom in to
parts, or make parts transparent.
In the 3D model, use the Hand tool to click the part you want to manipulate. If a preference setting prevents you
1
from using the Hand Tool, use the Object Data Tool (Tools > Object Data > Object Data Tool) to select parts. Or,
select the part in the Model Tree list.
From the Options menu in the top pane of the Model Tree, choose any of the following:
2
Changes the surface appearance of the entire 3D model according to the item you select on the
Model Render Mode
submenu: Transparent Bounding Box, Solid, Transparent, Solid Wireframe, and so on.
Displays the entire 3D model.
Show All Parts
Displays the box that encloses the 3D model.
Display Bounding Box
Changes the color of the bounding box. Choose this option, select a color, and then click OK.
Set Bounding Box Color
Note: The Hide, Isolate, Zoom To Part, and Transparent options appear on the Options menu only when a multi-part
3D model is selected. If the 3D model has only one part, the Export As XML option appears at the top of the menu instead
of the bottom.
Displays the model without showing the selected parts. You can also select and deselect check boxes in the top
Hide
pane of the Model Tree to hide and show different parts.
on the 3D toolbar, or by right-clicking/Control-clicking the 3D
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User Guide