Int. J. Num. 3. generate elements inside each primitive. In order to illustrate how the whole procedure works, Price s strategy is outlined here.
All vertices are trivalent.
A vertex is trivalent if it is connected to 3 edges. All vertices are trivalent. A vertex is trivalent if it is connected to 3 edges. No degeneracy or finite contact. The main strategy is to create a primitive for each medial surface vertex, non flap medial surface edge and non flap medial surface face.