Change rendering mode, lighting, projection, and background
The model rendering mode determines the surface appearance of the 3D model. The default rendering mode is solid, but you can also choose another rendering mode. You can also change the lighting of the 3D model as well as the background.
A. Default appearance B. Wireframe rendering mode C. Colored lighting D. Different background color
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- To change the rendering mode, choose an option from the Model Render Mode pop-up menu
. - To view an orthographic projection, click the Use Orthographic Projection button
. An orthographic projection effectively removes a dimension, preserving the size ratio between objects but giving the 3D model a less realistic appearance. Click the button again to use perspective projection. - To turn lighting on or off or to change lighting, choose an option from the Enable Extra Lighting pop-up menu
. - To change the background color, click the arrow next to the Background color swatch and choose a color.
Note:
Model rendering modes, lighting schemes, and background color options are also available by right-clicking the 3D model, and then clicking Viewing Options. Model rendering modes also appear under the Options menu on the Model Tree.
- To change the rendering mode, choose an option from the Model Render Mode pop-up menu
The model rendering modes include combinations of factors that affect the appearance of the 3D object. The illustration below shows a simple object rendered in each of the available modes.
A. Solid B. Transparent Bounding Box C. Transparent D. Solid Wireframe E. Illustration F. Solid Outline G.Shaded Illustration H. Bounding Box I. Transparent Bounding Box Outline J. Wireframe K. Shaded Wireframe L.Transparent Wireframe M. Hidden Wireframe N. Vertices O. Shaded Vertices
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. Parts that show in the 3D model appear in the tree with a check mark next to them.
A. Selected part B. Hidden part C. Isolated part D. Transparent part
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Note:
The items that appear on the Options menu depend on whether the 3D model is composed of just one part or multiple parts. Many of these options are also available by right-clicking a part in the 3D model.
Model Render Mode
Changes the surface appearance of the entire 3D model according to the item you choose from the submenu: Transparent Bounding Box, Solid, Transparent, Solid Wireframe, and so on.
Show Physical Properties
Displays the surface area and volume (if available) in the Object Data pane of theModel Tree.
Set Bounding Box Color
Changes the color of the bounding box. Choose this option, select a color, and then click OK.
Hide
Displays the model without showing the selected parts. You can also select and deselect check boxes in the top pane of the Model Tree to hide and show different parts.
Isolate Part
Displays the geometry, the Product Manufacturing Information (PMI), and all views (including PMI views) for the isolated part only. Views and information for all other parts are hidden or deselected. Changes occur in the Model Tree as well. In the Structure pane (top), only the isolated part is selected. The structure of the other parts is available but deselected. The View pane (middle) lists only the views that have been defined for the isolated part, including PMI views. If you click a view, you see only the PMI for that view in the document pane. (To view the PMI for the isolated part, make sure 3D PMI is selected in the Structure pane.) The View pane hides views related to the assembly or other parts, including custom views created in Acrobat. You can add parts to the view by selecting them in the Model Tree. You can also use the Hide/Show commands in the options menu of the Model Tree. To cancel the isolated part, do any of the following:
- Select another part with the Isolate Part command.
- Select the top assembly in the Model Tree.
- Select the Home View button.
Zoom To Part
Changes the center focus from the entire 3D model to the selected parts. This setting is especially useful for rotating a part, allowing the rotation to occur around the center focus of the part rather than around the entire model.
Part Render Mode
Displays all of the rendering modes that are available for the part. The rendering mode changes the appearance of the 3D model according to the rendering mode you choose.
Export As CSV
Creates a separate file in CSV format that contains all of the model data. You can export the data from the whole Model Tree or a selected node. The file can be opened in any program that supports CSV formatting, such as Microsoft Excel.
Note:
If the 3D model includes Product Manufacturing Information (PMI), options for showing and hiding the PMI are available on this menu.
The Model Tree appears in the navigation pane on the left side of the work area. You can also open the Model Treeby clicking the Toggle Model Tree button 
on the 3D toolbar. Or, right-click the 3D model and choose 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.
Structure pane
The topmost pane shows the tree structure of the 3D object. For example, a 3D object depicting a car has separate groups of objects (called nodes) for the chassis, engine, and wheels. In this pane, you can move through the hierarchy and select, isolate, or hide various parts.
Product Manufacturing Information (PMI) appears as a group of items on the same hierarchical level as its related object or assembly.
View pane
The middle pane lists the views that have been defined for the 3D object. When you change a view, click one of the listed views to return the 3D model to a saved state. See Setting 3D views in PDFs.
You can also add to and edit views in the View pane. For example, after you isolate and rotate a part, you can save that particular view, including the camera angle, background, lighting, and other attributes. This feature is not available for Adobe Reader.
Object Data pane
The lower pane displays other information, including properties and metadata, if any, about the object or part. You cannot edit this information for 3D objects in Acrobat.
A. 3D object hierarchy B. Saved& views C. Part or object information
Note:
To change the default behavior for the Model Tree, open the Preferences dialog box and under Categories, select 3D and Multimedia. Then choose an option from the Open Model Tree On 3D Activation menu.
The author of the PDF can set up a 3D model in the conversion settings so that clicking it automatically displays the Model Tree.
Displaying a cross section of a 3D model is like cutting it in half and looking inside. Use the Cross Section Controlsdialog box to adjust the alignment, offset, and tilt of the cutting plane.
on the 3D toolbar to turn on or off the cross section.Changes you make here are applied immediately. To see these changes, make sure that the Cross Section Properties dialog box does not block your view of the active 3D model. The Cross Section Properties dialog box remains on top if you focus or interact with the underlying PDF. To close it, click the Close button in the upper-right corner.
Align To Face
Cuts the cross-section on a plane defined by the surface of any face that you then click in the 3D model. (The dialog box is dimmed until you click the face of a model part.)
Align To 3 Points
Cuts the cross-section on a plane defined by any three points that you click the 3D model. (The dialog box is dimmed until you click three points of a model.)
Show Intersections
Indicates where the cutting plane slices the 3D model by adding a colored outline. Click the color swatch if you want to select a different color.
Show Cutting Plane
Displays the two-dimensional field that cuts the 3D model. Click the color swatch to select a different color, and enter a different percentage to change the opacity of the plane.
Offset
Determines how much of the 3D model is sliced. Drag the slider left or right, or change the percentage.
Note:
To understand how each axis divides the 3D model, select an axis and then drag the Offset slider back and forth. Observe the changes in the embedded 3D model.
Flip
Reverses the cross-section. For example, if the top half of the model is cut off, click Flip to display the top half and cut off the bottom half.
Tilt sliders
Determine the angles between the cutting plane and the axes. Drag the sliders left or right, or change the percentages.
Save Section View
Opens the View Properties dialog box in which you can select the display properties to save with the view. After you select the properties to save, the cross-sectional view is added to the list of views in the 3D toolbar and the Model Tree. The saved view is given a default name, SectionView[n].
Display properties that you choose not to save revert to the setting of the previous view. For example, if you do not save the background color, the cross-section view retains the background color of the previously displayed view.
Camera properties define the precise angle and positioning for a view of an object. Camera properties make up a camera view, which can be used both between views and between files.
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Select Model
After you select this option, click a 3D model in the document. The Camera Properties dialog box shows the current camera position.
- If Target is selected, the new position of the camera target is the center of the selected model.
- If Camera And Target is selected, the position of the camera target is the center of the selected model. The camera is aligned to the selected model.
Select Face
After you select this option, click a face of the 3D model in the document. The Camera Properties dialog box shows the current camera position.
- If Target is selected, the new position of the camera target is the center of the selected face.
- If Camera And Target is selected, the position of the camera target is the center of the selected face. The camera is aligned to this face.
Select 3 Points
After you select this option, select three points on the same or different models in the document. The Camera Properties dialog box shows the current camera position.
- If Target is selected, the new position of the camera target is the center of the three selected points.
- If Camera and Target are selected, the camera target is the center of the three selected points. The camera position is aligned to the plan composed by the three selected points.
