Each user interaction is quantitatively and qualitatively analyzed for simple and compound tasks in both standing and seated positions. A comprehensive user study is performed within a mixed-methods approach for the usability and user experience analysis of all three user interaction modes. The 3D user interface is analyzed using three different interaction modes, point-and-click, controller-based direct manipulation, and a gesture-based user interface. Downward gaze allows the user to raise the interaction layer that facilitates several traditional desktop tasks. The proposed novel dual-layer 3D user interface allows for user interactions with multiple screens portrayed within a curved 360-degree effective field of view available for the user. This work presents a novel design of a new 3D user interface for an immersive virtual reality desktop and a new empirical analysis of the proposed interface using three interaction modes.
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