Changing the Model View
away from you. The Rotate tool can be activated by pressing SHIFT-right mouse button.
Named Views
Named Views are accessed by selecting View|Named Views. The Named Views dialog is displayed, as shown below. The five default view orientations are listed and can be activated from the View menu, View Toolbar or Named Views dialog. These views will not change the Zoom factor of the Model Window. A new default view, Normal To, will change the view orientation to the surface normal of a selected planar surface. If the selection is invalid a message will be displayed. Any view can be saved by entering a View Name in the dialog box and pressing Save View. The Zoom and View data including rotation and pan will be stored and available for future recall. The new views are added to the listing in the dialog and are saved in the model's OML file.
FIGURE 2.31 - Named Views dialog
Previous View
The View History will store the previous 10 views. Selecting View|Previous View or the Previous View tool will change to the view.
Controlling the Appearance of Objects
Display Object
You can control the display of each object independently using the View|Display Object option. The default for all objects is to be displayed (i.e. visible) in all Model windows. You hide an object by first selecting the object either in the model window or the System Tree, then select View|Display Object or select Display Object from the pop-up menu, available by clicking the right mouse button in the model view or the System Tree. The object is no longer displayed, and a Hidden attribute displays under the object in the System Tree. The Display Object control affects the normal silhouette view, the rendered view, and the wireframe views.
To display an object that has been hidden, you must select the object using the System Tree. You can’t use the model window because the object is hidden! After the object is selected, choose View|Display Object to redisplay the object. To
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turn on the display of all objects, use the View|Display All command, described below.
Display All
All objects can be made visible using View|Display All. This function will recalculate the silhouettes for the model view and redisplay the object in either the normal or rendered views.
Display Object WCS
All TracePro Objects use a working (local) coordinate system (WCS) which in turn is transformed from the Global Origin, displayed by the X,Y,Z axis. When moving the object, the Absolute position is defined relative to the Global Origin. The WCS display is enabled by selecting an Object and selecting the View|Display Object WCS menu.
Figure 2.32 shows a Reflector, Lens and Primitive Sphere with their respective WCSs displayed. The Reflector has its WCS origin at the vertex of the reflecting surface, the Lens has its WCS origin at the vertex of the first surface and the sphere has its WCS origin at the sphere's center.
FIGURE 2.32 - WCS of three TracePro objects
Display RepTile Expert
The RepTile display option draws the virtual RepTile Geometry in the model window. To see the corresponding RepTile Geometry select View|Display RepTile. The boundary of the RepTiles as defined in the Apply Properties dialog is displayed along with the individual tile boundaries and geometry. See “RepTile Examples” on page 9.1. Textured RepTile is also viewed with this option.
Figure 2.33 shows a block with a prism type RepTile surface. The RepTile property was applied with a Perfect Absorber surface property. A fan of rays is
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Changing the Model View
shown absorbed by the RepTile features in the central portion of the surface and leaving the block outside of the RepTile boundary.
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FIGURE 2.33 - Block with Prism RepTile surface displayed
Boundary Only
The Display RepTile|Boundary Only option is available for the instances when you wish to see only the boundary of the RepTile region without any of the feature information.
Display voxels
Once either an audit or a raytrace has been performed on a model, the Voxels can be displayed by selecting View|Display Voxels. The Voxel Display can be turned OFF by reselecting this menu item to remove the checkmark.
Voxelization is a method of “allocating” the geometry in the model to specific zones to improve raytrace speed. Increasing the number of voxels improves raytrace speed at the expense of Audit speed and memory usage. Voxel settings
are selected under Analysis|Raytrace Options|Advanced.
Display Importance Standard Expert
TracePro provides an option to display the size, orientation and location of surface and source Importance Targets in the model window. The display is enabled via the View|Importance Targets menu item. See “Importance Sampling” on page 7.2.
Figure 2.34 shows a lens with a single importance target displayed with IT at the target’s origin. One set of rays converges to the lens’s focus. Another set of rays converges to the importance target and are the importance sampled rays. Other rays are random scatter rays.
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