X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibr2c2%2Ftrackattachment.cpp;h=64704b11b5290bab5e17d24da21e06f61b9eb230;hb=0443ca05cbd306487131f5f5bd3b91181ae4a733;hp=3d28651d882395bdd8baab18162e3e201ad3b1bc;hpb=e3e3a940c75dcad126d5cf08f0802efdab914568;p=r2c2.git

diff --git a/source/libr2c2/trackattachment.cpp b/source/libr2c2/trackattachment.cpp
index 3d28651..64704b1 100644
--- a/source/libr2c2/trackattachment.cpp
+++ b/source/libr2c2/trackattachment.cpp
@@ -8,8 +8,7 @@ using namespace std;
 namespace R2C2 {
 
 TrackAttachment::TrackAttachment(Layout &l):
-	Object(l),
-	offset(0)
+	Object(l)
 {
 	layout.signal_object_removed.connect(sigc::mem_fun(this, &TrackAttachment::object_removed));
 }
@@ -20,13 +19,20 @@ TrackAttachment::~TrackAttachment()
 		track->remove_attachment(*this);
 }
 
-void TrackAttachment::attach_to(const TrackIter &t, float o)
+float TrackAttachment::get_offset_from_endpoint(unsigned epi) const
+{
+	if(epi==track.entry())
+		return track.offset();
+	else
+		return track->get_type().get_path_length(0)-track.offset();
+}
+
+void TrackAttachment::attach_to(const TrackOffsetIter &t)
 {
 	if(track)
 		track->remove_attachment(*this);
 
 	track = t;
-	offset = o;
 
 	if(track)
 		track->add_attachment(*this);
@@ -66,13 +72,13 @@ void TrackAttachment::attach_to_closest(float limit)
 			if(adiff<Angle::quarter_turn())
 			{
 				TrackIter iter(trk, i);
-				attach_to(iter, find_offset(iter, closest));
+				attach_to(TrackOffsetIter(iter, find_offset(iter, closest)));
 				break;
 			}
 		}
 	}
 	else
-		attach_to(TrackIter(), 0);
+		attach_to(TrackOffsetIter());
 }
 
 float TrackAttachment::find_offset(const TrackIter &trk, const Vector &point)
@@ -81,7 +87,7 @@ float TrackAttachment::find_offset(const TrackIter &trk, const Vector &point)
 	Vector epp = trk->get_snap_node(trk.entry()).position;
 
 	float dist = distance(epp, point);
-	float offs = dist;
+	float offs = min(dist, trk->get_type().get_path_length(0));
 	while(1)
 	{
 		TrackPoint tp = trk->get_point(trk.entry(), offs);