Index: trunk/src/plugins/rt_topo/crbs.c
===================================================================
--- trunk/src/plugins/rt_topo/crbs.c	(revision 1342)
+++ trunk/src/plugins/rt_topo/crbs.c	(revision 1343)
@@ -35,6 +35,7 @@
 #include "route_res.h"
 
 #include <libgrbs/debug.h>
+#include <gengeo2d/cline.h>
 
 #include "crbs.h"
 
@@ -64,7 +65,7 @@
 				ang = e->ang[1];
 			else
 				abort();
-			
+printf(" (ACHK ang=%f arc=%f->%f) ", ang, arc->new_sa, arc->new_da);
 			if (grbs_angle_in_arc(arc->new_sa, arc->new_da, ang, 1))
 				return &tn_unknown;
 		}
@@ -73,7 +74,42 @@
 	return NULL;
 }
 
+static grbs_2net_t *crbs_coll_check_line_(grbs_t *grbs, grbs_2net_t *tn, grbs_point_t *gpt, const g2d_cline_t *cl)
+{
+	crbs_point_t *pt = gpt->user_data;
 
+	EDGELIST_FOREACH(edge, (pt->cpt->adj_edges)) {
+		crbs_edge_t *e = edge->data;
+		if (e->nets > 0) {
+			g2d_cline_t ecl;
+
+			ecl.p1.x = edge->endp[0]->pos.x; ecl.p1.y = edge->endp[0]->pos.y;
+			ecl.p2.x = edge->endp[1]->pos.x; ecl.p2.y = edge->endp[1]->pos.y;
+
+printf(" (LCHK) ");
+			if (g2d_isc_cline_cline(cl, &ecl))
+				return &tn_unknown;
+		}
+	}
+	EDGELIST_FOREACH_END();
+	return NULL;
+}
+
+static grbs_2net_t *crbs_coll_check_line_cb(grbs_t *grbs, grbs_2net_t *tn, grbs_point_t *pt1, double x1, double y1, grbs_point_t *pt2, double x2, double y2)
+{
+	grbs_2net_t *res;
+	g2d_cline_t cl;
+
+	cl.p1.x = x1; cl.p1.y = y1;
+	cl.p2.x = x2; cl.p2.y = y2;
+
+	res = crbs_coll_check_line_(grbs, tn, pt1, &cl);
+	if (res == NULL)
+		res = crbs_coll_check_line_(grbs, tn, pt2, &cl);
+
+	return res;
+}
+
 crbs_point_t *crbs_point_new(crbs_t *crbs)
 {
 	crbs_point_t *p = calloc(sizeof(crbs_point_t), 1);
@@ -93,6 +129,7 @@
 	crbs->ctx = ctx;
 	crbs->grbs.coll_report_cb = crbs_coll_report_cb;
 	crbs->grbs.coll_check_arc = crbs_coll_check_arc_cb;
+	crbs->grbs.coll_check_line = crbs_coll_check_line_cb;
 	crbs->grbs.user_data = crbs;
 	htad_init(&crbs->addrs, htad_hash, grbs_addr_hash_keyeq);