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dummies
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Dummies 
A dummy object is the simplest object available: it is a point with orientation, and it can be seen as a reference frame. Dummies are multipurpose or helper objects: they are used alone to identify specific points or reference frames in the scene, they are also used in pairs to specify loop closures or tip-target relationships for dynamics or kinematics calculations. Following figure shows a dummy:
[Dummy]
Dummies are collidable, measurable and detectable objects. This means that dummies:
can be used in collision detections with other collidable objects that are volume based, such as OC trees.
can be used in minimum distance calculations with other measurable objects.
can be detected by proximity sensors.
By default, the collidable, measurable and detectable property of a dummy is turned off (see object common properties).
Dummies can be added to the scene with [Menu bar --> Add --> Dummy], or created from a shape object in the vertex edit mode.
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jointDynamicEngineProperties <<
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