A screen-space formulation for 2D and 3D direct manipulation

  • Authors:

  • Jason L. Reisman;Philip L. Davidson;Jefferson Y. Han

  • Affiliations:

  • Perceptive Pixel, Inc., New York, NY, USA;Perceptive Pixel, Inc., New York, NY, USA;Perceptive Pixel, Inc., New York, NY, USA

  • Venue:
  • Proceedings of the 22nd annual ACM symposium on User interface software and technology
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

Rotate-Scale-Translate (RST) interactions have become the de facto standard when interacting with two-dimensional (2D) contexts in single-touch and multi-touch environments. Because the use of RST has thus far focused almost entirely on 2D, there are not yet standard techniques for extending these principles into three dimensions. In this paper we describe a screen-space method which fully captures the semantics of the traditional 2D RST multi-touch interaction, but also allows us to extend these same principles into three-dimensional (3D) interaction. Just like RST allows users to directly manipulate 2D contexts with two or more points, our method allows the user to directly manipulate 3D objects with three or more points. We show some novel interactions, which take perspective into account and are thus not available in orthographic environments. Furthermore, we identify key ambiguities and unexpected behaviors that arise when performing direct manipulation in 3D and offer solutions to mitigate the difficulties each presents. Finally, we show how to extend our method to meet application-specific control objectives, as well as show our method working in some example environments.