We have recently made some updates to the clipping box class. It now includes a function to compute all entities within the volume of the clipping box. In addition, it is now possible to turn off the cutting planes, set the opacity of the clipping box geometry and render the box on top of the model.
The class works very well with the new handle operators for HOOPS Communicator.
For a live demo, please go here:
https://3dsandbox.techsoft3d.com/?snippet=3lV14CGX266sYaLINLR0sW&fullscreen=true&autorun=true
See the original forum post for the source code and updated documentation.