After typing either key 'P' or 'F' the UI is frozen under Windows (not under Linux)

[Andreas-Forster]

Under Windows 10 the UI freezes after typing one of the keys 'F' or 'P'. Typing the key once is enough. The same thing does not happen when using the exact same .jar under Linux. This bug was verified on two different window machines.

Steps to reproduce the bug:

1. Load the UI
2. Load some data (e.g. a .stl-mesh)
3. Verify that you can turn the shape using the mouse (left-draging with the mouse)
4. Hit the key 'F' or 'P' once
5. Try to rotate the shape again -> will not work as it is frozen.

[Andreas-Forster]

After some investigation, it looks that it is a problem of VTK with the call off component.getRenderWindowInteractor().CharEvent(); in the vtkInteractorForwarder class. Until this is solved, one can use a custom Interactor for the ScalismoFrame which blocks the forwarding of the key-pressed events for these two keys.

  override def keyPressed(e: KeyEvent): Verdict = {
    e.getKeyChar match {
      case 'p' => Block
      case 'f' => Block
      case _ => Pass
    }
  }