Dupin cyclide blends between quadric surfaces for shape modeling

Sebti Foufou, Lionel Garnier

    Research output: Contribution to journalArticle

    Abstract

    We introduce a novel method to define Dupin cyclide blends between quadric primitives. Dupin cyclides are non-spherical algebraic surfaces discovered by French mathematician Pierre-Charles Dupin at the beginning of the 19th century. As a Dupin cyclide can be fully characterized by its principal circles, we have focussed our study on how to determine principal circles tangent to both quadrics being blended. This ensures that the Dupin cyclide we are constructing constitutes a G1 blend. We use the Rational Quadratic Bélier Curve (RQBC) representation of circular arcs to model the principal circles, so the construction of each circle is reduced to the determination of the three control points of the RQBC representing the circle. In this work, we regard the blending of two quadric primitives A and B as two complementary blending operations: primitive A-cylinder and cylinder-primitive B; two Dupin cyclides and a cylinder are then defined for each blending operation. In general the cylinder is not useful and may be reduced to a simple circle. A complete shape design example is presented to illustrate the modeling of Eurographics'04 Hugo using a limited number of quadrics combined using Dupin cyclide blends.

    Original languageEnglish (US)
    Pages (from-to)321-330
    Number of pages10
    JournalComputer Graphics Forum
    Volume23
    Issue number3 SPEC. ISS.
    DOIs
    StatePublished - Jan 1 2004

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Computer Graphics and Computer-Aided Design

    Cite this

    Dupin cyclide blends between quadric surfaces for shape modeling. / Foufou, Sebti; Garnier, Lionel.

    In: Computer Graphics Forum, Vol. 23, No. 3 SPEC. ISS., 01.01.2004, p. 321-330.

    Research output: Contribution to journalArticle

    Foufou, Sebti ; Garnier, Lionel. / Dupin cyclide blends between quadric surfaces for shape modeling. In: Computer Graphics Forum. 2004 ; Vol. 23, No. 3 SPEC. ISS. pp. 321-330.
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