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Blacktrax Tracked Body

Blacktrax Tracked Body

Updated: 4 Dec 2023

Generates a tracked point from Blacktrax.

Method #

Takes a single Blacktrax Trackable and provides it as a tracked point (a bit like Null). You can track either the rigid body position and rotation of a given trackable or just individual tracked LEDs. To use, parent other objects to this node to have the positions and rotations inherited.

To enable listening to the Blacktrax data, you need to configure the Blacktrax options in menu: Devices->Mocap/Camera/Streaming Device Settings
A trackable is a Blacktrax name for a tracked object. It can either be a point, or rigid body.

Parameters

These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.

ParameterDetails
Position X The objects position along the local x-axis.
Position Y The objects position along the local y-axis.
Position Z The objects position along the local z-axis.
Rotation Heading The objects rotation around the local y-axis.
Rotation Pitch The objects rotation around the local x-axis.
Rotation Bank The objects rotation around the local z-axis.
Scale X The objects scale along the local x-axis.
Scale Y The objects scale along the local y-axis.
Scale Z The objects scale along the local z-axis.

Control the inheritance of the transforms from the parent.

ParameterDetails
Position Toggle inheritance of the Position from the parent.
Rotation Toggle inheritance of the Rotation from the parent.
Scale Toggle inheritance of the Scale from the parent.
World Position Only Inherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit Time Toggle inheritance of time from the parent.

These properties control the core behaviours of the node.

ParameterDetails
Select Trackable When receiving Blacktrax data, this enables you to select a provided trackable.
Trackable Name The name of the trackable (as defined by Blacktrax)
Trackable Type Choose whether to take the centroid of all the LEDs or take the position of a single LED
LED Index If Trackable Type is LED Points then, choose the index of the LED to track.
Flip Z Axis Flip positions in the Z axis
Flip Z Rotation Flip rotations in the Z axis

Inputs

NameDescriptionTypical Input
Transform ModifiersApply the transforms of another node to this node.Null
Target NodeModifiy the rotations of the node to always direct the z axis towards the input.Null
Local Transform OverrideApply the transforms of another node to this node, relative to its parent.Null