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Chapter 12: The 3D Scene
Objects are added to the scene from the Object List window. When an object is added to
the scene, the display parameters of the scene are not modified. This allows objects to
be added to and/or removed from a particular view or rotating scene. It is also possible
that the added object is outside of the current view. To see objects newly added to a
scene it may be necessary to zoom out or reset the scene view point using the Reset
item in 3D Scene's View menu.
Note: Closing the series while objects are being added to the 3D Scene will cause
RECONSTRUCTTM to crash!
When an object is added to the scene, it replaces any existing scene object with the
same name. Any modifications to the object's in-scene attributes (color, transparency,
etc.) will be lost when the object is re-added to the scene. The 3D representation or
position of an object can be modified by specifying new parameters and then adding the
object to the scene again. It is not possible to have two different representations for an
object (e.g. traces and ellipsoid) in a scene, except by generating one representation and
then renaming the object and generating the second representation without clearing the
scene.
Removing Objects
Specific objects selected in the Object List are removed from the scene by the Remove
from scene menu item in the Object List window's Scene menu. All objects can be
removed the scene by selecting Clear from the 3D Scene window's Scene menu.
The objects in the scene are not removed when a series is closed and a new series
opened. This allows objects from one series to be rendered with objects from another. If
this feature is not desired simply Clear the scene whenever a new series is opened.
Scenes are not preserved when the application is terminated. Closing the program
requires the scene to be recreated by adding the objects again.
Changing Object Appearance
After an object has been added to the scene, certain aspects of the object's appearance
can be modified by opening the Color/transparency... dialog from the Scene menu of the
Object List window (Fig. 12.1). Only the highlighted objects in the Object List will be
modified. The number of highlighted objects is indicating in the title bar of the Changing
Scene Objects dialog. Every object will receive the same changes specified in the dialog
when the Apply button is selected. Note that the colors of the trace data are not modified
by changing the appearance of the object in the scene.
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