Browsing by Author "Dachselt, Raimund"

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    PhysicsBox: Playful Educational Tabletop Games
    (ACM, 2010) Langner, Ricardo; Brosz, John; Dachselt, Raimund; Carpendale, Sheelagh
    We present PhysicsBox, a collection of three multi-touch, physics-based, educational games. These games, based on concepts from elementary science have been designed to provide teachers with tools to enrich lessons and support experimentation. PhysicsBox combines two current trends, the introduction of multi-touch tabletops into classrooms and research on the use of simulated physics in tabletop applications. We also provide a Java library that supports hardware independent multi-touch event handling for several tabletops.
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    Revisiting hovering: interaction guides for interactive surfaces
    (ACM, 2012) Cheung, Victor; Heydekorn, Jens; Scott, Stacey; Dachselt, Raimund
    Current touch-based interactive surfaces rely heavily on a trial-and-error approach for guiding users through the interaction process. In contrast, the legacy WIMP (Windows, Icons, Menus, Pointer) paradigm employs various methods to provide user assistance. A commonly used strategy is the use of mouse hovering. This research explores how this strategy can be adapted and expanded to user interaction with interactive surfaces to provide user assistance as well as to help address common surface interaction issues, such as precisions. Design dimensions and considerations are discussed, and potential hover interaction techniques are proposed. These techniques emphasize the use of animation to facilitate user engagement and improve the overall user experience.
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    A Set of Multi-touch Graph Interaction Techniques
    (ACM, 2010) Schmidt, Sebastian; Nacenta, Miguel; Dachselt, Raimund; Carpendale, Sheelagh
    Interactive node-link diagrams are useful for describing and exploring data relationships in many domains such as network analysis and transportation planning. We describe a multi-touch interaction technique set (IT set) that focuses on edge interactions for node-link diagrams. The set includes five techniques (TouchPlucking, TouchPinning, TouchStrumming, TouchBundling and PushLens) and provides the flexibility to combine them in either sequential or simultaneous actions in order to address edge congestion.
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    Villains, architects and micro-managers: what tabula rasa teaches us about game orchestration
    (ACM, 2013) Graham, T.C. Nicholas; Schumann, Irina; Patel, Mrunal; Bellay, Quentin; Dachselt, Raimund
    Players of digital games are limited by the constraints of the game's implementation. Players cannot fly a kite, plant a tree or make friends with a dragon if these activities were not coded within the game. Game orchestration relaxes these restrictions by allowing players to create game narratives and settings as the game is being played. This enables players to express their creativity beyond the strictures of the game's implementation. We present Tabula Rasa, a novel game orchestration tool based on an efficient tabletop interface. Based on a study of 20 game orchestration sessions using Tabula Rasa, we identify five behavioural patterns adopted by orchestrators, and four styles of collaborative interaction between orchestrators and players. Finally, we present recommendations for designers of game orchestration systems.