Northern Digital Polaris Vicra User Manual page 95

Glossary
Rigid Body
A rigid body is an object on which three or more markers are fixed relative to one another.
Tool Definition File
A tool definition file stores information about a tool or rigid body. This includes information such as
the placement of the tool's markers, the location of its origin, and its manufacturing data. A tool
definition file is formatted as .rom for tools.
Tool Tip Offset
The tool tip offset is the vector between the tip of the tool and the tool origin.
Transformation
A transformation is a combination of translation and rotation values that describe a change of the
tool or rigid body in position and orientation.
Unique Geometry Tool
Unique geometry tools incorporate markers positioned in such a way that, when detected in the
measurement volume, the tool can be uniquely identified from other tools.
Polaris Vicra User Guide - Revision 2 83