/* cloneEdge:
* Make a copy of e in e's graph but using ct and ch as nodes
*/
static edge_t *cloneEdge(edge_t * e, node_t * ct, node_t * ch)
{
graph_t *g = ct->graph;
edge_t *ce = agedge(g, ct, ch);
agcopyattr(e, ce);
return ce;
}
/* cloneEdge:
* Make a copy of e in e's graph but using ct and ch as nodes
*/
static edge_t *cloneEdge(edge_t * e, node_t * ct, node_t * ch)
{
graph_t *g = agraphof(ct);
edge_t *ce = agedge(g, ct, ch,NULL,1);
agbindrec(ce, "Agedgeinfo_t", sizeof(Agedgeinfo_t), TRUE);
agcopyattr(e, ce);
return ce;
}
/* addRevEdge:
* Add a reversed version of e. The new edge has the same key.
* We also copy the attributes, reversing the roles of head and
* tail ports.
* This assumes we've already checked that such an edge does not exist.
*/
static void addRevEdge(Agraph_t * g, Agedge_t * e)
{
Agsym_t* sym;
Agedge_t* f = agedge (g, aghead(e), agtail(e), agnameof(e), 1);
agcopyattr (e, f);
num_rev++;
sym = agattr (g, AGEDGE, TAILPORT_ID, 0);
if (sym) agsafeset (f, HEADPORT_ID, agxget (e, sym), "");
sym = agattr (g, AGEDGE, HEADPORT_ID, 0);
if (sym) agsafeset (f, TAILPORT_ID, agxget (e, sym), "");
}
