Adjacency and incidence framework: a data structure for efficient and fast management of multiresolution meshes

ABSTRACT

This paper introduces a concise and responsiveness data structure, called AIF (Adjacency and Incidence Framework), for multiresolution meshes, as well as a new simplification algorithm based on the planarity of neighboring faces. It is an optimal data structure for polygonal meshes, manifold and non-manifold, which means that a minimal number of direct and indirect accesses are required to retrieve adjacency and incidence information from it. These querying tools are necessary for dynamic multiresolution meshing algorithms (e.g. refinement and simplification operations). AIF is an orientable, but not oriented, data structure, i.e. an orientation can be topologically induced as needed in many computer graphics and geometric modelling applications. On the other hand, the simplification algorithm proposed in this paper is "memoryless" in the sense that only the current approximation counts to compute the next one; no information about the original shape or previous approximations is considered.

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Index Terms

• Computing methodologies

  • Computer graphics

    • Graphics systems and interfaces

      • Graphics file formats

    • Shape modeling

      • Parametric curve and surface models

      • Volumetric models