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An
ACIS edge consists of the boundary of a surface and the topology associated with a curve. An edge is bounded by one or more vertices. For example, by bounding an infinite plane with four orthogonal edges, you create a rectangular surface. Edges includes pointers to vertices and attributes, and support for display and roll back. Edges are used to represent the wires in a wireframe body and the boundaries of faces in a solid body. Edges are implemented in the class
EDGE, which is derived from the class
ENTITY.
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