BlackTrax CHOP

From Derivative
Jump to: navigation, search


Note: Only available in TouchDesigner Pro.

The BlackTrax CHOP will accept tracking data from BlackTrax Motion Tracking Systems.

Server Settings

The server software should be set to send data in the WYSIWYG coordinate system (which should be the default). Rotations should be sent in Euler angles, not Quaternions. TouchDesigner should support both endian settings, but it's best to leave those as their default values.


Parameters - BlackTrax Page

Active active - While on, the CHOP receives information sent to the network port. While Off, no updating occurs.

Port port - The port that will accept packets.

Protocol protocol - - The network protocol to use. Refer to the Network Protocols article for more information.

  • Messaging (UDP) msging -
  • Multi-Cast Messaging (UDP) multicastmsging -

Network Address netaddress - When using Multicast, this is the address that will listen for packets.

Sample Rate samplerate - Sets the sample rate of this CHOP.

Output Format outputformat - - Specifies the format for the CHOP channels (ie. how many beacons to add). "From Mapping Table" adds one beacon to the CHOP for every row in the mapping table. "From Max Beacons" adds the number specified in the "Max Beacons" parameter.

  • From Mapping Table fromtable -
  • From Max Beacons frombeacons -

Max Beacons maxbeacons - Specifies how many beacons to add to the CHOP. Used with the "From Max Beacons" output format.

Centroid centroid - When enabled, adds beacon translation and rotation channels.

Velocity velocity - When enabled, adds beacon velocity channels.

Acceleration acceleration - When enabled, adds beacon acceleration channels.

LEDs leds - When enabled, adds position channels for each LED in the beacon.

Reset Channels reset - Clears any stored beacons and removes any stale data.

Reset Pulse resetpulse -

Mapping Table mappingtable - A DAT table that maps beacon IDs to CHOP channels (beacon0, beacon1, etc.). The first row will map to beacon0, second row to beacon1, etc. Beacon ID is a unique non-negative integer and is specified within BlackTrax applications.

Below is an example of a mapping table that is tracking 3 beacons with IDs 10, 11, and 12. In this example 10 is mapped to beacon0, 11 is mapped to beacon1, and 12 is mapped to beacon2.

Beacon setup example.jpg

Parameters - Common Page

Time Slice timeslice - Turning this on forces the channels to be "Time Sliced". A Time Slice is the time between the last cook frame and the current cook frame.

Scope scope - To determine which channels get affected, some CHOPs use a Scope string on the Common page.

Sample Rate Match srselect - - Handle cases where multiple input CHOPs' sample rates are different. When Resampling occurs, the curves are interpolated according to the Interpolation Method Option, or "Linear" if the Interpolate Options are not available.

  • Resample At First Input's Rate first - Use rate of first input to resample others.
  • Resample At Maximum Rate max - Resample to the highest sample rate.
  • Resample At Minimum Rate min - Resample to the lowest sample rate.
  • Error If Rates Differ err - Doesn't accept conflicting sample rates.

Export Method exportmethod - - This will determine how to connect the CHOP channel to the parameter. Refer to the Export article for more information.

  • DAT Table by Index datindex - Uses the docked DAT table and references the channel via the index of the channel in the CHOP.
  • DAT Table by Name datname - Uses the docked DAT table and references the channel via the name of the channel in the CHOP.
  • Channel Name is Path:Parameter autoname - The channel is the full destination of where to export to, such has geo1/transform1:tx.

Export Root autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is Path:Parameter are relative to.

Export Table exporttable - The DAT used to hold the export information when using the DAT Table Export Methods (See above).

Ableton Link • Analyze • Angle • Attribute • Audio Band EQ • Audio Device In • Audio Device Out • Audio Dynamics • Audio File In • Audio Filter • Audio Movie • Audio Oscillator • Audio Para EQ • Audio Play • Audio Render • Audio Spectrum • Audio Stream In • Audio Stream Out • Beat • BlackTrax • Blend • Clip Blender • Clip • Clock • Composite • Constant • Copy • Count • CPlusPlus • Cross • Cycle • DAT to • Delay • Delete • DMX In • DMX Out • Envelope • EtherDream • Event • Expression • Extend • Fan • Feedback • File In • File Out • Filter • Function • Gesture • Handle • Helios DAC • Hog • Hokuyo • Hold • In • Info • Interpolate • Introduction To CHOPs id• Inverse Curve • Inverse Kin • Join • Joystick • Keyboard In • Keyframe • Kinect • Lag • Leap Motion • Leuze ROD4 • LFO • Limit • Logic • Lookup • LTC In • LTC Out • Math • Merge • MIDI In • MIDI In Map • MIDI Out • Mouse In • Mouse Out • NatNet In • Noise • Null • Object • Oculus Audio • Oculus Rift • OpenVR • OSC In • OSC Out • Out • Override • Panel • Parameter • Pattern • Perform • Pipe In • Pipe Out • Pulse • RealSense • Record • Rename • Render Pick • Reorder • Replace • Resample • S Curve • Scan • Script • Select • Sequencer • Serial • Shared Mem In • Shared Mem Out • Shift • Shuffle • Slope • SOP to • Sort • Speed • Splice • Spring • Stretch • Switch • Sync In • Sync Out • Tablet • Time Slice • Timeline • Timer B • Timer • TOP to • Touch In • Touch Out • Trail • Transform • Trigger • Trim • Warp • Wave