Konferensartikel

Incremental Spherical Linear Interpolation

Tony Barrera
Barrera Kristiansen AB

Anders Hast
Creative Media Lab, University of Gävle, Sweden

Ewert Bengtsson
Centre for Image Analysis, Uppsala University, Sweden

Ladda ner artikelhttp://www.ep.liu.se/ecp_article/index.en.aspx?issue=013;article=004

Ingår i: The Annual SIGRAD Conference. Special Theme - Environmental Visualization

Linköping Electronic Conference Proceedings 13:4, s. 7-10

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Publicerad: 2004-11-24

ISBN:

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

Animation is often done by setting up a sequence of key orientations; represented by quaternions. The in between orientations are obtained by spherical linear interpolation (SLERP) of the quaternions; which then can be used to rotate the objects. However; SLERP involves the computation of trigonometric functions; which are computationally expensive. Since it is often required that the angle between each quaternion should be the same; we propose that incremental SLERP is used instead. In this paper we demonstrate five different methods for incremental SLERP; whereof one is new; and their pros and cons are discussed.

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Referenser

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