The winged edge data structure is a commonly used data representation used to describe polygon models in computer graphics. Specifically, it describes the geometry and topology when three or more surfaces come together and meet at a common edge. The ordering is such that the surfaces are ordered counter-clockwise with respect to the innate orientation of the intersection edge. Moreover the representation allows numerically unstable situations like that depicted below.

External links

• Winged Edge Polyhedron Representation for Computer Vision, Bruce G. Baumgart
• The Winged-Edge Data Structure, on Michigan Technological University
• Winged Edge, on university of Pisa

Computer-aided design