mirror of https://github.com/CGAL/cgal
Replace $d$D by $d$-dimensional (remark of Andreas).
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\newcommand{\nulldart}{\texttt{null\_dart\_handle}}
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\section{Introduction}
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A $d$D combinatorial map is a data structure representing an
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orientable subdivided $d$D % \emph{quasi-manifold}, \emph{i.e.} a $d$D
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object obtained by taking $d$D cells, and allowing to glue $d$D cells
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along $(d-1)$D cells. It provides a description of all the cells of
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the subdivision (for example vertices and edges), together with incidence
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and adjacency relationships. This package is a generalization of the
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halfedge data structure to higher dimension.\footnote{A 2D
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combinatorial map is equivalent to a halfedge data structure: there
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is a one-to-one mapping between elements of both data structures,
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halfedges corresponding to darts.}
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A $d$-dimensional combinatorial map is a data structure representing
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an orientable subdivided $d$-dimensional object obtained by taking
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$d$D cells, and allowing to glue $d$D cells along $(d-1)$D cells. It
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provides a description of all the cells of the subdivision (for
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example vertices and edges), together with incidence and adjacency
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relationships. This package is a generalization of the halfedge data
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structure to higher dimension.\footnote{A 2D combinatorial map is
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equivalent to a halfedge data structure: there is a one-to-one
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mapping between elements of both data structures, halfedges
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corresponding to darts.}
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We denote $i$-cell for an $i$-dimensional cell (for example in 3D,
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0-cells are \emph{vertices}, 1-cells are \emph{edges}, 2-cells are
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