Figure 36 Clipping Plane dialog box
Reset Viewpoint
– Sets the viewpoint to the view when the model was loaded.
Overhead View
– Provides a view from above.
Preset Views
– Provides views of the data from six preset viewpoints (along the coordinate
axes) as well as the last perspective view. These are also available by hitting function keys
(F1 – F7).
Bookmarks
– Saves a particular viewpoint. This is very useful for returning to a particular
view of interest for analysis, demonstrations or presentations. When you create a bookmark
you are prompted to give it a name. This name appears in the Scene Tree in the
Bookmarks
folder. Double-clicking on a bookmark will bring you to the saved viewpoint. You can
specify the number of seconds for the transition to a bookmarked viewpoint in
Preferences
found in the
File
menu. You can also begin a continuous loop of the bookmarks which will
move from viewpoint to viewpoint. The amount of time spent at each viewpoint is the same
as the amount of time spent in transition.
Keep Ground Level
– If enabled (
9
), this function helps keep the model approximately
‘level’ when rotating. In most situations you will want this enabled. However, if you wish
to view the model from overhead or from below, you’ll find it easier if this is not enabled.
Perspective View
– This is the more common way to view 3D models. With a perspective
view, objects appear smaller if they are farther away, and it provides the most ‘natural’
view of a model (see the image to the right in Figure 37.
Orthographic View
– In an orthographic view, objects do not get smaller in the distance.
This is particularly useful for viewing scenes with a measurement grid as shown in
Figure 37. Notice how the walls are square to the floor in the left image (orthographic
view) whereas they appear to merge in the distance in the right image (perspective view).
DeltaSphere-3000 3D Scene Digitizer
50
9/23/05
