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Implementing a zooming User Interface: experience building Pad++

✍ Scribed by Ben Bederson; Jon Meyer

Book ID
101236789
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
365 KB
Volume
28
Category
Article
ISSN
0038-0644

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✦ Synopsis

We are investigating a novel user interface paradigm based on zooming, in which users are presented with a zooming view of a huge planar information surface. We have developed a system called Pad++ to explore this approach. † The implementation of Pad++ is related to real-time 3D graphics systems and to 2D windowing systems. However, the zooming nature of Pad++ requires new approaches to rendering, screen management, and spatial indexing. In this paper, we describe the design and implementation of the Pad++ engine, focusing in particular on rendering and data structure issues. Our goal is to present useful techniques that can be adopted in other real-time graphical systems, and also to discuss how 2D zooming systems differ from other graphical systems.

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