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To get good tracking performance from different viewpoints or under occlusion, you may need to attach multiple Pulsar clusters or extra markers to a single rigid object. In particular, if you are using VR headsets and/or guns or similar props, you may benefit from the better rotational stability and/or occlusion resistance offered by combining multiple Pulsar clusters.

To merge smart objects:

1. Create smart objects as normal (see Create smart objects).

   

2. In the Tracking panel, select the smart objects that will contribute to the merged object, right-click and then click Merge smart objects.

   In the Tracking panel, the merged smart object is displayed with multiple pattern preview icons.

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3. Enter a name for the merged smart object.

   The selected smart objects are replaced with a single composite smart object, retaining the origin of the first selected object.

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   In the Properties pane for the merged smart object, the properties of the combined objects are displayed (the smart object that was selected last appears first in the Smart Clusters section). Note that in the following example, the Advanced properties Image Modified are displayed.

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1. In the 3D View, select the required smart object and the additional markers (Alt+drag or drag only, if the option Alt key to select in views is cleared in Preferences).

   

2. In the Tracking panel, right-click on the object and select Merge Smart Objects.

   

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   In the 3D View, the merged object is displayed.

   

   In the Tracking panel, the composite object can be identified with a new icon next to the object name.

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   You can save this composite object as a template and use it as a family of objects, each with a unique smart object pattern for identification.

   Note that because these additional markers are not controlled by a smart object, they cannot be enabled or disabled with the rest of the composite object.

Split a merged smart object

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1. In the Tracking panel, select the merged smart object.

2. Right-click the merged object and then click Split Smart Objects.

   The separated objects are given the name of their device slot (eg, Top, Front), appended with a number if that name is already in use.

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1. Create the merged smart object (see Merge smart objects) with the required mesh and other attributes.
2. In the Tracking panel, right-click the composite smart object and then click Export Template.

3. In the Export Smart Object Template dialog box, enter a name for the template and then click Save.

   The template is saved into the default location:
   C:\Users\Public\Documents\Vicon\SmartObjectTemplates

   You can now use your template to create further smart objects as described next.

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To apply a custom template:

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Note that you only need to change the origin of smart objects that you create manually or from custom templates: the built-in smart object templates already have the correct origin set.

1. To activate the object manipulator:

   1. To pause Evoke, click Enter Review at the bottom right of the Workspace.

   2. Select the smart object.

   3. In the 3D View, click the object manipulator button.

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2. In the Workspace either:

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

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

     

     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 one of the buttons at the right of the Object Manipulator heading Image Removed Image Added.

In the 3D View, you can align a selected object's axes to the global axes, a selected marker, or to the center of multiple selected markers. To do this, select the relevant object(s) or marker(s), activate the Object Manipulator Image Removed Image Added and then expand Alignment Tool at the bottom. For more information, see Understand the alignment tool.

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1. In the System panel, right-click on the device(s) that you want to remove.

2. Point to Remove, and then click Selected.