tetrahedra

Description

A tetrahedra element stores the entire set of tetrahedra forming a 3-manifold triangulation.

The total number of tetrahedra must be specified by the ntet attribute. The individual tetrahedra are numbered 0, 1, 2, etc., and their face gluings are described by the corresponding child tet elements. There must be precisely ntet child tet elements in total.

Attributes

Example

The following XML snippet represents a triangulation of a two-tetrahedron (1, 1, 2) layered solid torus.

<tetrahedra ntet="2">
  <tet> 1 78 1 78 -1 -1 -1 -1 </tet>
  <tet> 1 57 1 147 0 78 0 78 </tet>
</tetrahedra>