User

Specifies a user position and parameters. In most cases, only a single unnamed user is necessary. However, in more general cases, it is possible to assign Users to specific Viewports to provide a more fine-grained control over the rendering that occurs in that viewport.

• name (optional)
  non-empty string

  Specifies the name of this user. Each user needs to have a unique name, but there also has to be exactly one user present that has an empty name (or without a name attribute) which is used as the default user.

• eyeseparation (optional)
  number (0.0, \(\infty\))

  Determines the eye separation used for stereoscopic viewports. If no viewports in the configuration are using stereo, this setting is ignored.

• pos (optional)
  vec3

  A linear offset of the user position. Must define three float attributes x, y, and z. The default values are x=0, y=0, z=0, meaning that no linear offset is applied to the user’s position.

• matrix (optional)
  array of numbers

  A generic transformation matrix that is applied to the orientation of this user.

• orientation (optional)
  orientation

  Describes a fixed orientation for the viewing direction of this user. This can be provided either as Euler angles or as a quaternion. This value will overwrite the value specified in matrix.

• tracking (optional)
  array of objects

  Provides information about whether this user should be tracked using a VRPN-based tracker. This child node contains two attributes with information about the tracker that this user should be associated with.

  • tracker
    string

    The name of the tracker group that this user should be linked with. This name must be a name of a Tracker that is specified in this configuration.

  • device
    string

    The name of the device in the tracker group that should be used to control the tracking for this user. The specified device has to be a Device that was specified in the tracker.