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Pad++: A Zooming Graphical Interface for Exploring Alternate Interface Physics

Pad++: A Zooming Graphical Interface for Exploring Alternate Interface Physics. Benjamin B. Bederson and James D. Hollan. Presented by Daniel Schulman. What is Pad++?. A system for building interfaces based on 2.5-D zooming. Implemented in Tcl/Tk and C++.

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Pad++: A Zooming Graphical Interface for Exploring Alternate Interface Physics

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  1. Pad++: A Zooming Graphical Interface for Exploring Alternate Interface Physics Benjamin B. Bederson and James D. Hollan Presented by Daniel Schulman

  2. What is Pad++? • A system for building interfaces based on 2.5-D zooming. • Implemented in Tcl/Tk and C++. • “Semantic Zooming” – more info is shown when zoomed in.

  3. Motivation • View large amounts of information w/out having to hide some. • Provides structure to data, to complement “filter” approaches. • Avoid limitations of metaphors. (“dead metaphors”).

  4. Application - Hypertext • When linked data is clicked, it is displayed in the same “space”, but smaller and to the side. • Visual representation of browsing history.

  5. Application – Directory Browser • Files are shown “inside” directories. • More details (files in directories, file sizes, etc.) become visible as you zoom in.

  6. Critique • Introduced lots of important ideas that are now major research topics. • Proof-of-concept for zooming interfaces. • No direct attempt to evaluate success of approach. • Need to discuss pros and cons of “physics-based design” more.

  7. More abstract metaphor. Less real-world limitations. Scales to larger information sets. Some have poor spatial reasoning. Manipulation is more complicated. “Easily discoverable”? Lack of affordances. Physics-Based Design

  8. Future Work • Real user evaluation. • Different kinds of physics. • Manipulation of objects, not just viewing. • Affordances for alternate physics. • Navigation of large virtual spaces.

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