Editing Polygon mesh (section)

=== Render dynamic meshes ===

Winged-edge meshes are not the only representation which allows for dynamic changes to geometry. A new representation which combines winged-edge meshes and face-vertex meshes is the '''render dynamic mesh''', which explicitly stores both, the vertices of a face and faces of a vertex (like FV meshes), and the faces and vertices of an edge (like winged-edge).

Render dynamic meshes require slightly less storage space than standard winged-edge meshes, and can be directly rendered by graphics hardware since the face list contains an index of vertices. In addition, traversal from vertex to face is explicit (constant time), as is from face to vertex. RD meshes do not require the four outgoing edges since these can be found by traversing from edge to face, then face to neighboring edge.

RD meshes benefit from the features of winged-edge meshes by allowing for geometry to be dynamically updated.

See Tobler & Maierhofer ([[Winter School of Computer Graphics|WSCG]] 2006) for more details.<ref>Tobler & Maierhofer, [http://wscg.zcu.cz/wscg2006/Papers_2006/Short/E17-full.pdf A Mesh Data Structure for Rendering and Subdivision. 2006]. ([[PDF]])</ref>