Alice: lessons learned from building a 3D system for novices

  • Authors:
  • Matthew Conway;Steve Audia;Tommy Burnette;Dennis Cosgrove;Kevin Christiansen

  • Affiliations:
  • University of Virginia;University of Virginia;University of Virginia;Carnegie Mellon University;Carnegie Mellon University

  • Venue:
  • Proceedings of the SIGCHI conference on Human Factors in Computing Systems
  • Year:
  • 2000

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Abstract

We present lessons learned from developing Alice, a 3D graphics programming environment designed for undergraduates with no 3D graphics or programming experience. Alice is a Windows 95/NT tool for describing the time-based and interactive behavior of 3D objects, not a CAD tool for creating object geometry. Our observations and conclusions come from formal and informal observations of hundreds of users. Primary results include the use of LOGO-style egocentric coordinate systems, the use of arbitrary objects as lightweight coordinate systems, the launching of implicit threads of execution, extensive function overloading for a small set of commands, the careful choice of command names, and the ubiquitous use of animation and undo.