Index: src/crosshair.c
===================================================================
--- src/crosshair.c	(revision 2305)
+++ src/crosshair.c	(revision 2306)
@@ -79,6 +79,26 @@
 	gui->thindraw_pcb_pv(Crosshair.GC, Crosshair.GC, &moved_pv, true, false);
 }
 
+static void draw_dashed_line(hidGC GC, Coord x1, Coord y1, Coord x2, Coord y2)
+{
+/* TODO: we need a real geo lib... using double here is plain wrong */
+	double dx = x2-x1, dy = y2-y1;
+	double len_squared = dx*dx + dy*dy;
+	int n;
+	const int segs = 10;
+
+	if (len_squared < 1000000) {
+		/* line too short, just draw it - TODO: magic value; with a proper geo lib this would be gone anyway */
+		gui->draw_line(Crosshair.GC, x1, y1, x2, y2);
+		return;
+	}
+
+	for(n = 1; n < segs; n+=2)
+		gui->draw_line(Crosshair.GC,
+			x1 + (dx * (double)(n-1) / (double)segs), y1 + (dy * (double)(n-1) / (double)segs),
+			x1 + (dx * (double)n / (double)segs), y1 + (dy * (double)n / (double)segs));
+}
+
 /* ---------------------------------------------------------------------------
  * creates a tmp polygon with coordinates converted to screen system
  */
@@ -87,9 +107,19 @@
 	Cardinal i;
 	for (i = 0; i < polygon->PointN; i++) {
 		Cardinal next = next_contour_point(polygon, i);
-		gui->draw_line(Crosshair.GC,
+		if (next == 0) {
+			/* the implicit closing line */
+			if (i != 1) /* corner case: don't draw two lines on top of eachother - with XOR it looks bad */
+				draw_dashed_line(Crosshair.GC,
 									 polygon->Points[i].X + dx,
 									 polygon->Points[i].Y + dy, polygon->Points[next].X + dx, polygon->Points[next].Y + dy);
+		}
+		else {
+			/* any other line */
+			gui->draw_line(Crosshair.GC,
+									 polygon->Points[i].X + dx,
+									 polygon->Points[i].Y + dy, polygon->Points[next].X + dx, polygon->Points[next].Y + dy);
+		}
 	}
 }