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Adding a mesh to basic objects enables you to better visualize them in the Workspace to check that they are correctly aligned and that they give the user experience that you want.

1. In the Tracking pane, select the basic object to which you want to add a mesh.

2. In the Properties pane, from the Mesh list, select the required mesh.

   The mesh is an FBX file with the mesh skinned to a Root bone. You can use the installed meshes, or your own FBX files, saved to C:\Users\Public\Documents\Vicon\PropMeshes.

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   Your mesh is displayed in the 3D workspace.

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1. To activate the object manipulator:
   1. Press the space bar or click the Pause button at the bottom right of the Workspace to pause Evoke.
   2. Select the basic object.
   3. In the 3D Scene view, click the object manipulator button.

      

2. In the Workspace either:

   • Drag the manipulator to move or rotate the object to the required location; or

   • Enter values in the Translation and/or Rotation fields;

     

     When you resume streaming, the object's orientation is updated.

     Tip: To scale the Manipulator, on the numeric keypad, press + (scale up) or - (scale down).

Note that the manipulator operates in local or global space (corresponding to the object coordinate system or the world coordinate system respectively). To switch between the two, click the icon to the left of the Object Manipulator text.

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1. On the Tracking pane, right-click on the basic object and then select Export.
2. In the Export dialog box, browse to or enter the location for the object.
3. Save the VSK.

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CustomCalObject CustomCalObject

Create a custom calibration object

You can use a Vicon Active Wand to set up your volume coordinate system quickly and easily (see Set the volume origin). However, using a larger calibration object (for example, markers embedded in the volume floor and wall) can improve calibration stability and consistency over time.

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1. On the Camera Calibration tab, make sure the Advanced options are displayed (click Show Advanced at the top right if necessary).
2. Ensure the Set Volume Origin section is expanded.
3. From the L-Frame list, select the object that you created.

4. Ensure Perform Rescale is selected.

   This ensures that the marker distances in the L-Frame object are used for volume scaling.

5. Click Start Set Origin.

   The button displays Set Origin and is unavailable until Evoke has enough data to set the origin, when the button is enabled.

   If issues are detected, Evoke displays a message in the Set Origin button's tooltip to help you solve the problem. For more information, see About collecting frames.

6. Click Set Origin.

   The system scale is adjusted to provide improved calibration stability and consistency.