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4.3.6 Simulation»Construct Entity (QUEST only)
Virtual Machine Reference, Menu Bar
Simulation»Construct Entity (Quest only)
Provides the ability to add
physical entities (i.e.,
things you can see) to the
model. This menu selection
is only available in QUEST. The “Machines” section must be opened before you can add
entities to the model. The VM Construct tool bar provides buttons (as shown circled above) for
each of the entities that can be constructed.
All entities share some common parameters, listed below:
� Name: Entity names are used in the Model Navigator in QUEST, and in collision diagnostic
messages in CERUN and GENER. VM assigns default names when objects are created.
You should change the default to something that is both short and meaningful.
� Unit: Specifies the unit of measure for all non-rotary values (angles are always specified
in degrees).
� Position: Specifies the X, Y and Z axis position of the origin of the current object in relation
to the origin and rotational alignment of the parent object. When world coordinates
are selected (Simulation»Use World CS), the position of the entity is shown in world coordinates
instead of relative to the parent object. When constructing an entity, the mouse
pointer can be used to define the entity start position (and other parameters as well).
� Collision detection: Select the Enable check box to activate collision testing against the
current entity. A Safety zone amount can be specified when collision checking is enabled,
which checks for a collision at the specified distance from the surface. You can see the
extended collision envelope of all entities by toggling Simulation»Show»Safety Zones
from the menu bar.
� Spindle sweep: Select the “Do not generate sweep for spindle” check box to exclude the
entity from spindle sweep volume calculations, which dynamically compute the swept
volume of objects attached to a turning spindle for visualization and collision detection
purposes. Excluding an object from spindle sweep calculations will reduce the CPU
overhead of these calculations, but at the same time will omit the object for collision and
visualization purposes while the spindle to which it is attached is turning.
� OK button: Creates the entity as defined.
� Cancel button: Ignores this entity creation request.
� Apply button: Updates the simulation window to show the effects of the latest changes.
� Rotate button: Use this button to rotate the entity to its required final orientation. When
an entity is rotated, anything attached below this entity in the Navigator will be defined in
the new frame of rotation.
� Material button: Use this button to define the appearance (color) of the object. Material
properties are described later under the topic “Materials Dialog”. Objects are by default
created using the material of the last object created or selected using the Materials Dialog
(Ctrl Alt M shortcut).
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