Index: trunk/src_plugins/rbs_routing/map.c
===================================================================
--- trunk/src_plugins/rbs_routing/map.c	(revision 38814)
+++ trunk/src_plugins/rbs_routing/map.c	(revision 38815)
@@ -193,8 +193,7 @@
 #define FIND_PT_DELTA   2
 #define FIND_PT_DELTA2  RBSR_R2G(FIND_PT_DELTA * FIND_PT_DELTA)
 
-/* Return the point that's close enough to cx;cy or NULL if nothing is close */
-RND_INLINE grbs_point_t *find_point_by_center(rbsr_map_t *rbs, rnd_coord_t cx_, rnd_coord_t cy_)
+RND_INLINE grbs_point_t *rbsr_find_point_by_center(rbsr_map_t *rbs, rnd_coord_t cx_, rnd_coord_t cy_)
 {
 	double cx = RBSR_R2G(cx_), cy = RBSR_R2G(cy_), bestd2 = FIND_PT_DELTA2+1;
 	grbs_point_t *pt, *best= NULL;
@@ -241,7 +240,7 @@
 			if (arc == NULL)
 				return -32;
 
-			pt = find_point_by_center(rbs, arc->X, arc->Y);
+			pt = rbsr_find_point_by_center(rbs, arc->X, arc->Y);
 			if (pt == NULL)
 				return -64;
 
Index: trunk/src_plugins/rbs_routing/map.h
===================================================================
--- trunk/src_plugins/rbs_routing/map.h	(revision 38814)
+++ trunk/src_plugins/rbs_routing/map.h	(revision 38815)
@@ -37,3 +37,9 @@
 
 void rbsr_map_debug_draw(rbsr_map_t *rbs, const char *fn);
 void rbsr_map_debug_dump(rbsr_map_t *rbs, const char *fn);
+
+/*** utility ***/
+
+/* Return the point that's close enough to cx;cy or NULL if nothing is close */
+RND_INLINE grbs_point_t *rbsr_find_point_by_center(rbsr_map_t *rbs, rnd_coord_t cx, rnd_coord_t cy);
+
Index: trunk/src_plugins/rbs_routing/rbs_routing.c
===================================================================
--- trunk/src_plugins/rbs_routing/rbs_routing.c	(revision 38814)
+++ trunk/src_plugins/rbs_routing/rbs_routing.c	(revision 38815)
@@ -38,9 +38,11 @@
 
 #include "map.h"
 #include "stretch.h"
+#include "seq.h"
 
 #include "map.c"
 #include "stretch.c"
+#include "seq.c"
 
 static const char pcb_acts_RbsConnect[] = "RbsConnect()";
 static const char pcb_acth_RbsConnect[] = "Make a new rubber band stretch connection between two points";
Index: trunk/src_plugins/rbs_routing/seq.c
===================================================================
--- trunk/src_plugins/rbs_routing/seq.c	(nonexistent)
+++ trunk/src_plugins/rbs_routing/seq.c	(revision 38815)
@@ -0,0 +1,40 @@
+int rbsr_seq_begin_at(rbsr_seq_t *rbsq, pcb_board_t *pcb, rnd_layer_id_t lid, rnd_coord_t tx, rnd_coord_t ty, rnd_coord_t copper, rnd_coord_t clearance)
+{
+	grbs_point_t *start;
+
+	rbsr_map_pcb(&rbsq->map, pcb, lid);
+	rbsr_map_debug_draw(&rbsq->map, "rbsq1.svg");
+	rbsr_map_debug_dump(&rbsq->map, "rbsq1.dump");
+
+	rbsq->map.grbs.user_data = rbsq;
+#if 0
+	rbsq->map.grbs.coll_ingore_tn_line = coll_ingore_tn_line;
+	rbsq->map.grbs.coll_ingore_tn_arc = coll_ingore_tn_arc;
+	rbsq->map.grbs.coll_ingore_tn_point = coll_ingore_tn_point;
+#endif
+
+	start = rbsr_find_point_by_center(&rbsq->map, tx, ty);
+	if (start == NULL) {
+		rnd_message(RND_MSG_ERROR, "No suitable starting point\n");
+		return -1;
+	}
+
+	rbsq->tn = grbs_2net_new(&rbsq->map.grbs, RBSR_R2G(copper), RBSR_R2G(clearance));
+
+	rbsq->snap = grbs_snapshot_save(&rbsq->map.grbs);
+
+	return 0;
+}
+
+
+int rbsr_seq_consider(rbsr_seq_t *rbsq, rnd_coord_t tx, rnd_coord_t ty)
+{
+	grbs_point_t *end;
+
+	end = rbsr_find_point_by_center(&rbsq->map, tx, ty);
+	if (end != NULL) {
+	
+	}
+
+	return -1;
+}
Index: trunk/src_plugins/rbs_routing/seq.h
===================================================================
--- trunk/src_plugins/rbs_routing/seq.h	(nonexistent)
+++ trunk/src_plugins/rbs_routing/seq.h	(revision 38815)
@@ -0,0 +1,21 @@
+#define RBSR_SEQ_MAX 256
+
+typedef struct rbsr_seq_s {
+	rbsr_map_t map;
+	grbs_2net_t *tn;
+
+	grbs_addr_t path[RBSR_SEQ_MAX];
+	long used; /* number of path items already accepted */
+	grbs_addr_t consider;
+
+	grbs_snapshot_t *snap;
+} rbsr_seq_t;
+
+
+/* Start seqing a routing from tx;ty; returns 0 on success */
+int rbsr_seq_begin_at(rbsr_seq_t *rbss, pcb_board_t *pcb, rnd_layer_id_t lid, rnd_coord_t tx, rnd_coord_t ty, rnd_coord_t copper, rnd_coord_t clearance);
+void rbsr_seq_end(rbsr_seq_t *rbss);
+
+int rbsr_seq_consider(rbsr_seq_t *rbss, rnd_coord_t tx, rnd_coord_t ty);
+void rbsr_seq_accept(rbsr_seq_t *rbss);
+