This set of classes implement an easy to use and customizable markup type for adding text notes with a leader line to a model in HOOPS Communicator. Complete source code, demos and documentation is available on GitHub:
Below is a quick run-down of the main features
TextBox that automatically fits to the text with leader line pointing to the model:
Easy to add toolbars and other customizations:
Textbox can be set to rotate with the camera or stay static:
Optionally setting to hide textbox if insertion point is hidden:
Full Collaboration support via plugin to Collaboration Library. Demo in 3D Sandbox: