void ConnectivityGraph::deleteEdge( EdgeIP e ) {
// std::cout << "deleting edge " << *e <<
// ( e->isTree ? " (tree)" : " (nontree)" ) << std::endl;
// assert( e->count == 0 );
Vertex & u( vertices[e->vxid1] );
Vertex & v( vertices[e->vxid2] );
assert( EulerTourTree::connected( &u.ETvertices[0], &v.ETvertices[0] ) );
if ( e->isTree ) {
// cut all forests F_i, for 0 <= i <= level(e)
for ( ETForestLevel i = e->level; i >= 0; --i ) {
ETNode * oldroot = e->arcs[i].first->findRoot();
assert( oldroot == e->arcs[i].second->findRoot() );
// remove the old root from the forest
removeRoot( oldroot, i );
ETNode * r1 = NULL, * r2 = NULL;
EulerTourTree::cut( e->arcs[i].first, e->arcs[i].second, &r1, &r2 );
#ifdef DEBUG
ETNode * ru = u.ETvertices[i].loopNode->findRoot();
ETNode * rv = v.ETvertices[i].loopNode->findRoot();
assert( ru != rv );
assert( ru == r1 || ru == r2 );
assert( rv == r1 || rv == r2 );
#endif
// put the new roots in the forest
insertRoot( r1, i );
insertRoot( r2, i );
}
// attempt to find a replacement edge
for ( ETForestLevel i = e->level; i >= 0; --i ) {
if ( replaceEdge( *e, i ) ) break;
}
}
// delete e;
}
//main/////////////////////////////////////////////////////////////////////////////////////////////////////////
int main(){
mapa m;
grafo g = inicializaGrafo(&g, &m);
int i, i1, i2, i3;
char esc[20]; //comando a ser digitado
int FM = 1;
while (FM == 1){
scanf("%s", esc); //lerá o comando até o primeiro espaço, para depois ler até o proximo espaço, e assim por diante
int escI = identificaComando(esc); //identifica o comando digitado
switch(escI){
case _CV: //cria vértice
scanf("%d", &i1);
insertVertex(&g, &m, i1);
break;
case _DV: //destrói vértice
scanf("%d", &i1);
removeVertex(&g, i1, &m);
break;
case _CA: //cria aresta
scanf("%d %d %d", &i1, &i2, &i3);
insertEdge(&g, i1, i2, &m, i3);
break;
case _DA: //destrói aresta
scanf("%d", &i1);
removeEdge(&g, i1, &m);
break;
case _TV: //troca vértice
scanf("%d %d", &i1, &i2);
replaceVertex(i1, i2, m);
break;
case _TA: //troca aresta
scanf("%d %d", &i1, &i2);
replaceEdge(i1, i2, m);
break;
case _IG: //imprime grafo
printf("%d\n", g.nvertices);
for (i = 0; i < m.indiceVert; i++){
vertice *v = pegaVertRef(m, i+1);
if (v != NULL){
printf("%d ", i+1);
printf("%d\n", v->conteudo);
}
}
printf("%d\n", g.narestas);
for (i = 0; i < m.indiceAres; i++){
aresta *a = pegaAresRef(m, i+1);
if (a != NULL){
printf("%d ", i+1);
vertice *vT = a->dir;
printf("%d ", pegaVertInd(m, vT));
vT = a->esq;
printf("%d ", pegaVertInd(m, vT));
printf("%d\n", a->conteudo);
}
}
break;
case _CM: //caminho mínimo
scanf("%d %d", &i1, &i2);
dijkstra(&g, m, i1, i2);
break;
case _FM: //fim
FM = 0;
break;
}
}
return 0;
}