/* twopi_layout: */ void twopi_layout(Agraph_t * g) { Agnode_t *ctr = 0; char *s; twopi_init_graph(g); s = agget(g, "root"); if (s && (*s != '\0')) { ctr = agfindnode(g, s); if (!ctr) { agerr(AGWARN, "specified root node \"%s\" was not found.", s); agerr(AGPREV, "Using default calculation for root node\n"); } } if (agnnodes(g)) { Agraph_t **ccs; Agraph_t *sg; Agnode_t *c = NULL; int ncc; int i; ccs = ccomps(g, &ncc, 0); if (ncc == 1) { circleLayout(g, ctr); adjustNodes(g); spline_edges(g); } else { pack_info pinfo; pack_mode pmode = getPackMode(g, l_node); for (i = 0; i < ncc; i++) { sg = ccs[i]; if (ctr && agcontains(sg, ctr)) c = ctr; else c = 0; nodeInduce(sg); circleLayout(sg, c); adjustNodes(sg); } spline_edges(g); pinfo.margin = getPack(g, CL_OFFSET, CL_OFFSET); pinfo.doSplines = 1; pinfo.mode = pmode; pinfo.fixed = 0; packSubgraphs(ncc, ccs, g, &pinfo); } for (i = 0; i < ncc; i++) { agdelete(g, ccs[i]); } free(ccs); } dotneato_postprocess(g); }
/* twopi_layout: */ void twopi_layout(Agraph_t * g) { Agnode_t *ctr = 0; char *s; int setRoot = 0; pointf sc; int doScale = 0; int r; if (agnnodes(g) == 0) return; twopi_init_graph(g); s = agget(g, "root"); if ((s = agget(g, "root"))) { if (*s) { ctr = agfindnode(g, s); if (!ctr) { agerr(AGWARN, "specified root node \"%s\" was not found.", s); agerr(AGPREV, "Using default calculation for root node\n"); setRoot = 1; } } else { setRoot = 1; } } if ((s = agget(g, "scale")) && *s) { if ((r = sscanf (s, "%lf,%lf",&sc.x,&sc.y))) { if (r == 1) sc.y = sc.x; doScale = 1; if (Verbose) fprintf (stderr, "scale = (%f,%f)\n", sc.x, sc.y); } } if (agnnodes(g)) { Agraph_t **ccs; Agraph_t *sg; Agnode_t *c = NULL; Agnode_t *n; int ncc; int i; ccs = ccomps(g, &ncc, 0); if (ncc == 1) { c = circleLayout(g, ctr); if (setRoot && !ctr) ctr = c; n = agfstnode(g); free(ND_alg(n)); ND_alg(n) = NULL; if (doScale) scaleGraph (g, c, sc); adjustNodes(g); spline_edges(g); } else { pack_info pinfo; getPackInfo (g, l_node, CL_OFFSET, &pinfo); pinfo.doSplines = 0; for (i = 0; i < ncc; i++) { sg = ccs[i]; if (ctr && agcontains(sg, ctr)) c = ctr; else c = 0; nodeInduce(sg); c = circleLayout(sg, c); if (setRoot && !ctr) ctr = c; if (doScale) scaleGraph (sg, c, sc); adjustNodes(sg); } n = agfstnode(g); free(ND_alg(n)); ND_alg(n) = NULL; packSubgraphs(ncc, ccs, g, &pinfo); spline_edges(g); } for (i = 0; i < ncc; i++) { agdelete(g, ccs[i]); } free(ccs); } if (setRoot) agset (g, "root", agnameof (ctr)); dotneato_postprocess(g); }