ENH: Initial VR home widget implementation

[jcfr]

This commit is intended to implement features described in #43 by integrating changes originally associated with the following branches:

• dgmato/gui-widgets-interactions

  • initially developed between 2021-12-15 and 2022-05-23 by @dgmato with contributions from @cpinter.
  • based on the dgmato/gui-widgets-module branch

• dgmato/gui-widgets-module

  • initially developed between 2018-10-18 and 2021-10-0523 by @cpinter with contributions from @dgmato, @lassoan, @SalehChoueib and @mohammadrashid0917
  • with first commit titled "ENH: Initial VR home widget implementation" based of dgmato/virtual-widget branch.

• dgmato/virtual-widget

  • initial commit contributed by @SalehChoueib on 2018-10-18 (ENH: Add virtual widget from arbitrary Qt Widget !WIP!)
  • follow-up development by @cpinter and @mohammadrashid0917 between 2019-05-13 and 2019-06-13

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Commits originally associated with branch dgmato/gui-widgets-interactions:

• ENH: Remove unused UI widget in GUI Widgets module

• ENH: Do not load avatar models when setting up VR pointer

• ENH: Add new button to set up interaction Set up will include getting the VR controller transform node and applying that transform to the pointer model.

• ENH: Add GUIWidgets module to Virtual Reality category for easy access

• ENH: Load avatar models and transform pointer by right controller transform

• ENH: Reorganize code and remove unused code

• COMP: Fix build error due to Slicer API changes

• ENH: Add new module target library vtkSlicerMarkupsModuleMRMLDisplayableManager

• ENH: Send mouse release event to complete simulated mouse click after press event

• ENH: Modify coordinate system for GUI widget Origin is located on the top left corner in Qt widgets.

• ENH: Add button "Start interaction" to simulate interaction with VR pointer

• ENH: Add module to simulate VR pointer display and movement

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Commits originally associated with branch dgmato/gui-widgets-module:

• ENH: Add buttons in GUIWidgets to show VR widgets; Fix include dirs variable in CMake

• ENH: Add GUIWidgets module that provides in-VR Qt widget

  This is still a prototype, a few crucial features are needed:

  • Handle mouse interactions on the widget: forward events to Qt
  • Support moving the widget to arbitrary position
    • Implement outline tube and handle to grab with the controller
    • Option to keep widget floating in certain position relative to head motion (~HUD)
  • Implement laser pointer and use the intersection with these widgets as mouse interaction

  See more history: https://github.com/cpinter/VtkQWidgetTest

• ENH: Creating and registering VR segment editor widget Creates and registers the VR segment editor widget (which can be switched to from the VR home widget)

• BUG: Fix issues in VR home widget and the data widget

• ENH: Creating and registering VR data module widget Creates and registers the VR data module widget (which can be switched to from the VR home widget)

• ENH: Convert the interactor style to use the new vtkMRMLViewInteractorStyle Fix build error with Slicer-4.10

• STYLE: Add function documentation

• ENH: Initial VR home widget implementation

  Squashed commits (originally associated with branch dgmato/virtual-widget)

  • ENH: Create framework for registering VR modules Adds registerModule function to qMRMLVRView which can be called to create a new button for that module on the Modules bar in the VR home widget

  • ENH: Make VR home widget controls functional These changes make it so that changes in the module widget (viewable in Slicer) are reflected in the home widget (viewable in VR) and vice versa

  • ENH: Add VR optimized Qt Style Sheet This style sheet makes the text in the VR menu widget bigger, and gives the buttons and slider handles different colors for unpressed, hover, and pressed statuses.

  • ENH: Add VR home widget WIP Its UI is more or less complete but events are not handled and style sheet is needed

  • ENH: Add virtual widget from arbitrary Qt Widget !WIP!

Co-authored-by: Andras Lasso lasso@cs.queensu.ca
Co-authored-by: Csaba Pinter pinter.csaba@gmail.com
Co-authored-by: David Garcia Mato dgarciamato@gmail.com
Co-authored-by: Mohammad Rashid mohammadrashid0917@gmail.com
Co-authored-by: Sal Choueib salehchoueib@outlook.com