OSX/Linux: Windows:

NatNet2OSCbridge

Download the latests version for your platform at the releases tab

Feature overview

Natnet to OSC translation

The NatNet2OSCbridge decodes a NatNet stream from Motive into OSC, which it can then send to clients. Clients are simply added by an ipaddress/hostname and port number combination.

Midi to OSC translation

If a midi device is connected to the machine running the NatNet2OSC bridge recieved data can then optionally be send out to clients as OSC data. This is currently only tested with the Korg Nano Kontrol 2

OSC to OSC

OSC data can be received by the NatNet2OSC bridge on a port specified by the user. This data can then optionally be send out to the clients as OSC data

HTC Vive Tracker to OSC

If the machine running the NatNET2OSC bridge is a Windows machine with steamVR installed and HTC Vive Trackers connected then the data of these trackers can then optionally be send out to the clients as OSC data.

Client Settings

Rigidbodies
If checked client will receive the rigidbodies found in the NatNet stream

Markers
If checked client will receive the markers found in the NatNet stream

Skeletons
If checked client will receive the skeletons found in the NatNet stream

Hierarchy
If checked client will receive skeletons as a bundle of messages (e.g. "/skeleton/name/bone/") instead of receiving an entire skeleton in a single message ("/skeleton")

Velocity
If checked client will receive the the velocity data of rigidbodies. This implies a single frame delay.

Full
If checked client will receive the skeletons with bone parenting structure (specifically for use with our UnityOSCToolkit)

Save/Load Setup

Setups of clients and global settings can be loaded and saved by using the "Save Setup" and "Load Setup" button. Files are plain text XML files, a default file "setup.xml" is loaded at startup if it exists.

More MOCAP information and Manual

https://drive.google.com/drive/u/0/folders/0BzwxZounZTt9bjYxWmlnRGZYRE0

MOCAP OSC Data Structure

In the NatNet2OSCbridge there are two modes of sending the data over OSC.

• Mode ONE with Hierarchy unchecked
• Mode TWO with Hierarchy checked

Mode ONE with Hierarchy switched OFF

Rigidbody message: /rigidbody

The OSC message consist of a message with with the label /rigidbody and contains 15 values:

• Value 00: ID (int) of rigidbody
• Value 01: Name (string) of rigidbody
• Value 02: X position of rigidbody
• Value 03: Y position of rigidbody
• Value 04: Z position of rigidbody
• Value 05: X rotation of rigidbody (Quarternion)
• Value 06: Y rotation of rigidbody (Quarternion)
• Value 07: Z rotation of rigidbody (Quarternion)
• Value 08: W rotation of rigidbody (Quarternion)
• Value 09: X position velocity of rigidbody
• Value 10: Y position velocity of rigidbody
• Value 11: Z position velocity of rigidbody
• Value 12: X rotation velocity of rigidbody (Euler)
• Value 13: Y rotation velocity of rigidbody (Euler)
• Value 14: Z rotation velocity of rigidbody (Euler)

Example:

/rigidbody 0 Blokje2 0.995632 0.025337 0.034089 0.083149 0.995632 0.025337 0.034089

The units are floats and can either be in meters or centimeters depending on the recording.

Skeleton message: /skeleton/<NameOfSkeleton>/<NameOfJoint>

The OSC message consist of a message with the label /skeleton/<NameOfSkeleton>/<NameOfJoint> and contains 14 values:

• Value 00: Name (string) of the skeleton joint
• Value 01: X position of skeleton joint
• Value 02: Y position of skeleton joint
• Value 03: Z position of skeleton joint
• Value 04: X rotation of skeleton joint (Quarternion)
• Value 05: Y rotation of skeleton joint (Quarternion)
• Value 06: Z rotation of skeleton joint (Quarternion)
• Value 07: W rotation of skeleton joint (Quarternion)
• Value 08: X position velocity of skeleton joint
• Value 09: Y position velocity of skeleton joint
• Value 10: Z position velocity of skeleton joint
• Value 11: X rotation velocity of skeleton joint (Euler)
• Value 12: Y rotation velocity of skeleton joint (Euler)
• Value 13: Z rotation velocityof skeleton joint (Euler)

Examples:

/skeleton/Jan/Hip Hip -2.36176 0.856184 -0.603909 0.083149 0.995632 0.025337 0.034089

/skeleton/Jan/Ab Ab -2.34777 0.940245 -0.599119 0.071686 0.996859 0.00257 0.033565

The units are floats and can either be in meters or centimeters depending on the recording.

Mode TWO with Hierarchy switched ON

Rigidbody message: /rigidbody/<NameRigidBody>

The OSC message consist of a message with the label /rigidbody/<NameRigidBody> and contains 15 values:

• Value 00: ID (int) of rigidbody
• Value 01: Name (string) of rigidbody
• Value 02: X position of rigidbody
• Value 03: Y position of rigidbody
• Value 04: Z position of rigidbody
• Value 05: X rotation of rigidbody (Quarternion)
• Value 06: Y rotation of rigidbody (Quarternion)
• Value 07: Z rotation of rigidbody (Quarternion)
• Value 08: W rotation of rigidbody (Quarternion)
• Value 09: X position velocity of rigidbody
• Value 10: Y position velocity of rigidbody
• Value 11: Z position velocity of rigidbody
• Value 12: X rotation velocity of rigidbody (Euler)
• Value 13: Y rotation velocity of rigidbody (Euler)
• Value 14: Z rotation velocity of rigidbody (Euler)

Example:

/rigidbody 0 Blokje2 0.995632 0.025337 0.034089 0.083149 0.995632 0.025337 0.034089

The units are floats and can either be in meters or centimeters depending on the recording.

Skeleton message: /skeleton/<NameOfSkeleton>/<NameOfJoint>

The OSC message consist of a message with the label /skeleton/<NameOfSkeleton>/<NameOfJoint> and contains 14 values:

• Value 00: Name (string) of the skeleton joint
• Value 01: X position of skeleton joint
• Value 02: Y position of skeleton joint
• Value 03: Z position of skeleton joint
• Value 04: X rotation of skeleton joint (Quarternion)
• Value 05: Y rotation of skeleton joint (Quarternion)
• Value 06: Z rotation of skeleton joint (Quarternion)
• Value 07: W rotation of skeleton joint (Quarternion)
• Value 08: X position velocity of skeleton joint
• Value 09: Y position velocity of skeleton joint
• Value 10: Z position velocity of skeleton joint
• Value 11: X rotation velocity of skeleton joint (Euler)
• Value 12: Y rotation velocity of skeleton joint (Euler)
• Value 13: Z rotation velocityof skeleton joint (Euler)

Examples:

/skeleton/Jan/Hip Hip -2.36176 0.856184 -0.603909 0.083149 0.995632 0.025337 0.034089

/skeleton/Jan/Ab Ab -2.34777 0.940245 -0.599119 0.071686 0.996859 0.00257 0.033565

The units are floats and can either be in meters or centimeters depending on the recording.

HTC Vive Tracker OSC Data Structure

HTC Vive Tracker message: /vrtrackers/<SerialVRTracker>

The OSC message consist of a message with the label /vrtrackers/<SerialVRTracker> and contains 13 values:

• Value 00: X position of Vive Tracker
• Value 01: Y position of Vive Tracker
• Value 02: Z position of Vive Tracker
• Value 03: X rotation of Vive Tracker (Quarternion)
• Value 04: Y rotation of Vive Tracker (Quarternion)
• Value 05: Z rotation of Vive Tracker (Quarternion)
• Value 06: W rotation of Vive Tracker (Quarternion)
• Value 07: X position velocity of Vive Tracker
• Value 08: Y position velocity of Vive Tracker
• Value 09: Z position velocity of Vive Tracker
• Value 10: X rotation velocity of Vive Tracker (Euler)
• Value 11: Y rotation velocity of Vive Tracker (Euler)
• Value 12: Z rotation velocity of Vive Tracker (Euler)

Example:

/vrtrackers/LHR-A459K2B1 -0.69236 0.7159 -0.7153 0.6207 0.32758 -0.34163 0.62505 0.00248 -0.0013178 -0.0022626 -0.0011252 -0.0016089 -0.0017630

The units are floats. The rotation is expressed in radians and the position is expressed in meters.

Latest development builds

CI Development builds are pushed to http://pong.hku.nl/~buildbot/nightly

Build instructions

This application is build upon OpenFrameworks. In order to build this application you will need openframeworks installed.

The following steps need to be taken to build the application from git repositories. Please note that all these steps require the GNU build tools (make). Instructions do not cover Xcode or VisualStudio!

• 1: clone openframeworks: git clone https://github.com/openframeworks/openframeworks.
  Follow the instructions for your platform
• 2: clone our ofxNatNet fork to the addons dir: git clone https://github.com/hku-ect/ofxNatNet.git
• 3: clone the ofxImGui addon: git clone https://github.com/jvcleave/ofxImGui.git
• 4: recurse clone the NatNet2OSCbridge repository to the apps devApps dir: git clone --recurse-submodules https://github.com/hku-ect/NatNet2OSCbridge.git
• 5.1: On OSX configure and build the python library:
  brew install openssl xz; cd ext/cpython; ./configure --prefix $(cd "$(dirname "../../bin/python")" && pwd)/$(basename "../../bin/python")" --disable-shared --with-openssl=$(brew --prefix openssl); make; make install; cd -
• 5.2: On Linux configure and build the python library:
  cd ext/cpython; ./configure --prefix $(cd "$(dirname "../../bin/python")" && pwd)/$(basename "../../bin/python")" --disable-shared && make -s && make install; cd -
• 5.3: On Windows run: make python_win
• 6: Build the application: make Debug or make Release
• 7: You'll find the application in the bin directory.