Navigator Tree Nodes
The tree displayed in the Navigator window has nodes of many different types. Nodes can represent 1) a single object in the model or associated with the model or 2) collections of objects (for example, the node corresponding to the set of rigid bodies in a model). Nodes that correspond to multiple objects have a folder-like representation in the navigator tree.
The following table describes the types of objects that can be represented in the tree and their corresponding icons. Some objects, such as markers, are not represented in the tree in order to present a less cluttered view when dealing with large models.
Node Label | Icon | What the node represents |
[Model Name] | A full OpenSim model | |
| The set of rigid bodies in the model | |
| A single rigid body or Ground frame | |
| A single muscle wrap object | |
| An offset frame attached to the Body or ground | |
| Geometry (a mesh file, or analytical geometry) | |
Forces | All forces in the model | |
| All Muscles | |
| A muscle group | |
| A single muscle | |
| All non-muscle actuators | |
| A torque | |
| A Generalized force | |
| A force | |
| A force | |
Joints | All joints in the model | |
| A single joint | |
| A function describing dof changes | |
| All degrees of freedom for a joint | |
| An offset frame used to define the Joint | |
Constraints | A list of constraints associated with the model | |
| A specific constraint | |
Contact Geometry | A list of contact geometry associated with the model | |
Markers | A list of markers associated with the model | |
| A specific marker | |
Motions | All motions associated with a model | |
| A specific motion | |
Controllers | All controllers in the modle | |
Probes | All Probes attached to the model | |
Other Components | Any other custom components that are a part of the model |
Selecting Components (Key Bindings)
Selection of nodes in the Navigator tree follows the standard conventions:
- Select objects by clicking the left mouse button once on the tree node
- Select a region of contiguous nodes in the tree using shift+left mouse
- Clicking ctrl-left mouse button (cmd-left mouse on Mac) on a node that has already been selected causes it to be deselected
- Add objects to a group of selected objects by using ctrl+left mouse (cmd-left mouse on Mac)
In addition, clicking the left mouse button twice (double clicking) a node places a triad on the object in the visualizer. This is useful when quickly navigating the model to investigate where different objects are in the 3D View window. You can use the triad to move the object in the visualizer.
OpenSim is supported by the Mobilize Center , an NIH Biomedical Technology Resource Center (grant P41 EB027060); the Restore Center , an NIH-funded Medical Rehabilitation Research Resource Network Center (grant P2C HD101913); and the Wu Tsai Human Performance Alliance through the Joe and Clara Tsai Foundation. See the People page for a list of the many people who have contributed to the OpenSim project over the years. ©2010-2024 OpenSim. All rights reserved.