Tops is unified framework for basic operations on combinatorial 2-manifolds with or without boundary. There are two kinds of primitive operators on the underlying meshes: operators which change the topological characteristic or nature of the mesh and operators which just modify its combinatorial structure. Such operators provide a complete set of elementary operations for mesh modification. The mesh representation is based on a half-edge data structure without any extra storage requirements.
The main features of the library are:
- A simple dynamic modification mesh library based on the half-edge, a standard topological data structure. Also, because the half-edge is widely adopted, it should be easy to incorporate the library in many applications.
- A minimal API for mesh creation and adaptation. This interface complements the traditional topological query operators and consists of only a few functions.
- A complete and sufficient set of operators to change the combinatorial structure, as well as, the topological characteristic of a polygonal mesh.
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