Tutorial: 3D ViewingThis section covers using Revu to view and interact with embedded 3D models in a PDF. 

Getting Around the 3D Model Window

3D models display in Revu as a rectangular 3D Model window within the PDF page. When a 3D Modelwindow is present, a 3D Hover Bar appears to provide additional controls. In addition, the 3D Model Treetab offers advanced options.

Manipulating 3D Models with the Mouse

Click and drag themouse to interact with a 3D model. The behavior of themouse can be changed on the3D Hover Bar or on the 3D Model Tree button bar. The default behavior is for themouse to rotate themodel. Clicking the scroll wheel will pan.

Changing the Mouse Interaction Mode

l On the 3D Hover Bar, click the Mouse Interactionmenu, then click the desiredmode.

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l On the 3D Model Tree tab, on the 3D Model Tree button bar, click the Mouse Interactionmenu, then click the desiredmode.

Rotate: Moves the camera around themodel.

Spin: Rotates themodel around a point that is specified in themodel. In most casesRotate and Spin have very similar behavior, however Spinmay provemore useful onmodels which have no tilt defined.

Pan: Moves themodel up/down and left/right in the 3D Model window.

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Zoom: Moves the viewpoint in or out to increase the relative size of themodel.

Camera: Rotates the viewpoint from the position of the camera, for an effect similar totilting one’s head up or down, or rotating it left or right.

The currently selectedmode will be displayed as the icon for theMouse Interactionmenu.

Working with Views

Views are saved presets defining how to display a 3D model. At minimum a view consists of cameraposition and projection style, but it can optionally include other display settings like background color,lighting style, and so on. The 3D Model Tree tab contains a Views section that allows switching quicklyfrom one view to another. Views are also used to allow markup of 3D models; for more see the section onMarking Up 3D PDFs.

Using Predefined Views

3D Models can have predefined views. To display a predefined view:

l Click > 3D Model Tree to open the 3D Model Tree tab.l In the 3D Model Tree tab, in theViews section, click the name of a view.

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l On the 3D Hover Bar, click the list and then click the name of a View.

To reset to the default view at any time:

l On either the 3D Hover Bar or theViews button bar, click Home.

Creating a New View

To create a new view, first use themouse controls to manipulate themodel the way you want it to appear.

l In the 3D Model Tree tab, in theViews section, click Create New View. The current view ofthemodel will be used.

l In the 3D View Propertieswindow, type a name for the view in theView Name field.l Click theProjection list, then click eitherOrthogonal orPerspective.l Optionally, chooseDisplay Settings to include in the view. See the following section for more

information on Display Settings.l Click New.

Display Settings for Views

Additional settings that can be stored in a View include Background, Lighting, Render Mode, NodeVisibility and Cross Section Information.

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View Name: Defines the name that will display in the Views section.

Camera Properties: Defines the projectionmode, Orthogonal or Perspective.

Background: Optionally defines the background color. Check the box to include this setting. Click thecolor box to choose a color.

Lighting: Optionally defines the lighting style. Check the box to include this setting. Click the list tochoose a lighting style.

Render Mode: Optionally defines the render mode. Check the box to include this setting. Click the list tochoose a render mode.

Node Visibility: Check this box to carry the current visibility status from the 3D Model Tree section intothe view.

Cross Section Information: Check this box to carry the current clipping plane information into the view.

Animation Cycle

To play the currently selected Animation Cycle:

l On the 3D Hover Bar, click Play.

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l In the 3D Model Tree tab, on the 3D Model Tree button bar, click Play.

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To change the Animation Cycle type:

l On either the 3D Hover Bar or the 3D Model Tree button bar, click the arrow next to the Playicon.

l Click eitherRotate orCycle Views.

Rotate: Spins themodel as if it were on a turntable. Themouse navigation (zoom, pan) is still available inRotatemode. The spin rate and direction are defined in the 3D Rendering Preferences.

Cycle Views: Animates the transition from one predefined view to the next. The transition time and lengthof time spent on each view are controlled in the 3D Rendering Preferences.

Taking a Snapshot of a View

To take a 2D snapshot of a view:

l Right-click in the 3D Model window, then click Copy as Image.

The image is coped to the clipboard so that it can be placed in another PDF within Revu or in anotherprogram such as a word processor. The DPI of the snapshot is set underSettings> Preferences >Snapshot > Resolution.

Changing the Projection and Geometry

Projection

ThePerspective projectionmode takes 3D viewing effects such as foreshortening into consideration,similar to physical real-world viewing scenarios. Objects closer to the camera view appear larger thanobjects further away. TheOrthogonal projectionmode keeps the relative size of the objects the sameregardless of distance from the viewing (camera) position.

To change the projectionmode:

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l On either the 3D Hover Bar or the 3D Model Tree button bar, click to switch between the

Orthogonal and Perspectivemodes.

Geometry Render Modes

Thesemodes control the visible display of the 3D model elements. The three basic types of shading forthemodels are Solid, Transparent and SolidWireframe. The differences are shown in the below figure.Solid will apply amaterial to each individual part such that other 3D geometry behind the solid part is notvisible. Transparent sets the opacity of the elements in themodel such that items behind parts of themodel can be seen. SolidWireframe displays the triangular meshes which define the elements of themodel being viewed.

Additional Renderingmodes are available.

To change the geometry render mode:

l On either the 3D Hover Bar or the 3D Model Tree button bar, click Render Mode, then clickthe desiredmode.

Working with Model Components

The 3D Model Tree allows selectively showing and hiding individual components, or parts, of a 3D model.For a detailed reference, see the help for the 3D Model Tree section of the 3D Model Tree tab.

To show all parts in amodel:

l Right-click in either the 3D Model window or the 3D Model Tree, then click Show All Parts.

To reset all parts to their default visibility:

l Right-click in either the 3D Model window or the 3D Model Tree, then click Reset Parts.

To zoom the view tomaximize a part's size:

l In either the 3D Model window or the 3D Model Tree, right-click a part, then click Zoom to Part.

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Showing and Hiding Parts Selectively

Parts may be grouped together to form assemblies, or functional groupings, of 3D elements. A graphicalexample of this relation is described in the following diagram.

To set the visibility of an individual part or assembly:

l Check or uncheck the box to the left of the part's name

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l Right-click the part, then click Hide (orShow).3D Model Tree 3D Model Tree Context Menu

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