Information and Media Technologies
Online ISSN : 1881-0896
ISSN-L : 1881-0896
Computing
A Multi-Resolution Grid Snapping Technique Based on Fuzzy Theory
Qamar Uddin KhandSumudu DematapitiyaSato SagaJunji Maeda
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2007 年 2 巻 2 号 p. 528-536

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This paper presents a grid snapping technique, called multi-resolution fuzzy grid snapping (MFGS), that enables automatic mouse cursor snapping for a multi-resolution grid system. Quick and frequent switching between high- and low-resolution grid snapping is essential to make geometrical drawings that include both fine and coarse structures when using CAD systems with ordinary single-resolution grid systems. MFGS is intended to relieve users of this tedious manual switching. MFGS dynamically selects an appropriate snapping resolution level from a multi-resolution grid system according to the pointing behavior of the user. MFGS even supports an extremely fine grid resolution level, which is referred to as the no-snapping level. We show experimental results which demonstrate that MFGS is an effective grid snapping technique that speeds up low-resolution grid snapping while retaining the ability to snap to high-resolution grids. Furthermore, we examine the role of fuzziness in MFGS and its effect on snapping performance.
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© 2007 by Information Processing Society of Japan
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