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Current VR/AR systems are unable to reproduce the physical sensation of fluid vessels, due to the shifting nature of fluid motion. To this end, we introduce SWISH, an ungrounded mixed-reality interface, capable of affording the users a realistic haptic sensation of fluid behaviors in vessels. The chief mechanism behind SWISH is in the use of virtual reality tracking and motor actuation to actively relocate the center of gravity of a handheld vessel, emulating the moving center of gravity of a handheld vessel that contains fluid. In addition to solving challenges related to reliable and efficient motor actuation, our SWISH designs place an emphasis on reproducibility, scalability, and availability to the maker culture. Our virtual-to-physical coupling uses Nvidia Flex's Unity integration for virtual fluid dynamics with a 3D printed augmented vessel containing a motorized mechanical actuation system. To evaluate the effectiveness and perceptual efficacy of SWISH, we conduct a user study with 24 participants, 7 vessel actions, and 2 virtual fluid viscosities in a virtual reality environment. In all cases, the users on average reported that the SWISH bucket generates accurate tactile sensations for the fluid behavior. This opens the potential for multi-modal interactions with programmable fluids in virtual environments for chemistry education, worker training, and immersive entertainment.
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Effects of Physical Prop Shape on Virtual Stairs Travel Techniques
Experiences of Virtual Reality training and architectural virtual environments benefit when provided a higher sensation of stair climbing. Passive haptic props can add that sensation. These methods present a safe approach by placing short ramps on the floor rather than a physical staircase. To improve a user’s level of immersion, we conducted an experiment to explore the shape of physical props to change the way users were aligned and moved while traveling up or down a virtual set of stairs. We investigated three methods for physical props while ascending and descending virtual stairs. Results suggest that elongated props provide a better experience and are more preferred.
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- Award ID(s):
- 1852579
- PAR ID:
- 10163534
- Date Published:
- Journal Name:
- In 2020 IEEE Conference on Virtual Reality and 3D User Interfaces
- Page Range / eLocation ID:
- 672 to 673
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1109/VRW50115.2020.00187
