Normal classes:

CrackCodeC	Crackcode or Freeman code
BVertexC	Boundary vertex
EdgeC	Elementary boundary edge
BoundaryC	Crack code boundary

Normal functions:

CrackStep(const Index2dC &,CrackCodeT)
CrackDirection(CrackCodeT)	Crackcode or Freeman code
operator <<(ostream &,const EdgeC &)	Writes the elementary edge 'e' into the output stream 's'.
operator <<(ostream &,const BoundaryC &)
Line2Boundary(const BVertexC &,const BVertexC &)