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C-1 and G(1) continuous rational motions using a conformal geometric algebra

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Traditional rational motion design describes separately the translation of a reference point in a body and the rotation of the body about it. This means that there is dependence upon the choice of reference point. When considering the derivative of a motion, some approaches require the transform to be unitary. This paper resolves these issues by establishing means for constructing free-form motions from specified control poses using multiplicative and additive approaches. It also establishes the derivative of a motion in the more general non-unitary case. This leads to a characterization of the motion at the end of a motion segment in terms of the end pose and the linear and angular velocity and this, in turn, leads to the ability to join motion segments together with either C-1- or G(1)-continuity. (C) 2022 Elsevier B.V. All rights reserved.

Motion designGeometric algebraGeometric continuityRational motionQuaternionsDual quaternionsINTERPOLATIONCURVESDESIGN

Cross, Ben、Cripps, Robert J.、Mullineux, Glen

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Univ Birmingham

Univ Bath

2022

Journal of Computational and Applied Mathematics

Journal of Computational and Applied Mathematics

EISCI
ISSN:0377-0427
年,卷(期):2022.412
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