Release 4 Live Link Bliss for Unreal Engine

This release has plugins for UE 5.2, 5.3 and 5.4. For UE5.0 and 5.1 use release 3 If you need the bliss sample project, look below.

For install instructions, go here

REQUIRES RETracker Bliss Hardware with RETracker 0.8.8.0 or higher software.

What's new

• Support for UE 5.2, 5.3 and 5.4 is the only new feature.
• The plugins now build without warnings on UE 5.2, 5.3 and 5.4
• This release is plugins only. I will be updating the sample project and other resources like documentation and printable tags in the next release. For now you can get these from release 3, see "sample project" below for instructions and links.

The files

PluginOnly files

These contain the plugin only. The PluginOnly files contain no documentation, no PDFs of the calibration charts, no calibration actors and no sample project. Just create a "Plugins" folder in your Unreal project and copy the LiveLinkBliss folder from this release into it. Source code is included.

Sample project

If you are using Unreal 5.0 or 5.1 get the plugins and sample from the release 3 page here. If you want the bliss sample project for Unreal 5.2, 5.3 or 5.4 Download LiveLinkBliss_R3_for_UE5.1.zip This contains the older sample project and aruco/apriltag assets. After unzipping this, delete the "Plugins" folder and replace it with the plugins folder from this page that matches the version of Unreal you are using. Now when you open the sample project in UE 5.2, 5.3 or 5.4 it should automatically convert itself. Please let me know if you have any problems. I am in the process of doing an updated version of the tutorial sample as many things have changed.

Repository Snapshots

You DO NOT need the files labeled "Source Code" they archives of the repository as of Release 4. They are not ready to use and require compiling with Visual Studio 2022

Problems

If you have problems please check troubleshooting

If this does not help or you need a version for an older Unreal Engine, please post an issue here

Release 3 Live Link Bliss for UE 5 and 5.1

For install instructions, go here

REQUIRES RETracker Bliss Hardware

REQUIRES RETracker-Bliss-0.8.8.0 or higher software to support all the new features!
REQUIRES Unreal Engine 5 or higher
Works on UE 5.1 also

Known Problems

• Measuring Scale Actor: If you go to "Details" and click/drag any of the Transform fields to move it, Unreal may freeze for a second or two, then come back. This does not happen if you click/drag on the actor in the 3d window and move it there. This appears to be an Unreal bug, looking for a solution.

What's new

• In RETracker Bliss settings.text file you can set the camera number that will appear in LiveLink, recommend using 1 to 100
• You can track an AprilTag and use it to measure your nodal offset and sensor position, the tag tracking shows up as Camera 101 in LiveLink.
• Added an AprilTag actor that has a "tag size" you should set to the size of your printed tag
• Added an ArucoTag actor that has a "tag size" you should set to the size of your printed tag
• Added a skeletal 3d box reference object, you can set this to any size and have the pivot point be either in the center or the corner of the box
• Added an adjustable "measuring scale". You can set the scale to any length in meters and have marks every 10cm. You can also turn on text labels every 10cm and minor marks every cm.
• None of this should require any recompiling for UE 5 or UE 5.1

The files

Ready to use

These are ready to use and should not require any compiling, just open them with the right release of unreal. They contain everything you need to use the plugin and do lens distortion and nodal offset calibration. If you are not sure what to download, just get one of these, they have everything you will need.

LiveLinkBliss_R3_for_UE5.0.zip for Unreal Engine 5.0
LiveLinkBliss_R3_for_UE5.1.zip for Unreal Engine 5.1

PluginOnly files

These contain the plugin only. The PluginOnly files contain no documentation, no PDFs of the calibration charts, no calibration actors and no sample project.

PluginONLY_R3_for_UE5.0.zip
PluginONLY_R3_for_UE5.1.zip

Repository Snapshots

You DO NOT need the files labeled "Source Code" they archives of the repository as of Release 3. They are not ready to use and require compiling with Visual Studio 2022

Problems

If you have problems please check troubleshooting

If this does not help or you need a version for an older Unreal Engine, please post an issue here

Release 2 Live Link Bliss

This is release 2 of LiveLink for the Bliss tracker.

• Shows up as Camera 1 instead of zero. You will need to change your LiveLinkSubjest in the camera.
• The way of switching time stamps and debug data on and off has changed. It's now set in LiveLinkBliss source->default config.
• FocusDistance, focal length and user defined encoder data now do nothing.
• Added the Bliss icon to the plugin
• Updated/shortened documents
• Changes and cleanup of the code and project

The main zip below contains the entire project and test code I use for development.

There are two zips that contain ONLY the plugin, no sample project
You can install either of these by creating a "Plugins" folder inside your unreal project and unzipping them into it.

"Release_2_Bliss.plugin.code.only.zip" is just the plugin code and needs you to have Visual Studio Community Edition (free) installed to build it. It will build automatically once you turn the plugin on in unreal and restart. It should build on Unreal Engine 4.26, 4.27 and 5.

"Release_2_BlissPrebuiltPlugin.zip" is prebuilt for Unreal Engine 5.0.3, it should just work without being built so Visual Studio is not required.