![]() The crafted mixed approach for this study allows to collect, evaluate, and validate the viability of the new 3D user interface. 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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