Add a utility function to get path length from Track

[r2c2.git] / source / libr2c2 / track.cpp

diff --git a/source/libr2c2/track.cpp b/source/libr2c2/track.cpp
index 455cc88055c6301a8b7d53d29998a5d98cea8eb1..4708db5d40de6c79d26de28ef61af696afe6f48d 100644 (file)
--- a/source/libr2c2/track.cpp
+++ b/source/libr2c2/track.cpp
@@ -169,8 +169,6 @@ void Track::set_sensor_id(unsigned i)
 
        sensor_id = i;
        layout.create_blocks(*this);
-       if(layout.has_driver() && sensor_id)
-               layout.get_driver().add_sensor(sensor_id);
 }
 
 void Track::set_active_path(unsigned p)
@@ -185,31 +183,38 @@ void Track::set_active_path(unsigned p)
        layout.get_driver().set_turnout(turnout_id, p);
 }
 
-TrackPoint Track::get_point(unsigned epi, unsigned path, float d) const
+float Track::get_path_length(int p) const
 {
-       TrackPoint p = type.get_point(epi, path, d);
+       if(p<0)
+               p = active_path;
+       return type.get_path_length(p);
+}
+
+OrientedPoint Track::get_point(unsigned epi, unsigned path, float d) const
+{
+       OrientedPoint p = type.get_point(epi, path, d);
 
-       p.pos = position+rotated_vector(p.pos, rotation);
-       p.dir += rotation;
+       p.position = position+rotated_vector(p.position, rotation);
+       p.rotation += rotation;
        if(type.get_endpoints().size()==2)
        {
-               float grade = tan(tilt);
+               float dz = tan(tilt)*d;
                if(epi==0)
                {
-                       p.pos.z += grade*d;
-                       p.grade = grade;
+                       p.position.z += dz;
+                       p.tilt = tilt;
                }
                else
                {
-                       p.pos.z += slope-grade*d;
-                       p.grade = -grade;
+                       p.position.z += slope-dz;
+                       p.tilt = -tilt;
                }
        }
 
        return p;
 }
 
-TrackPoint Track::get_point(unsigned epi, float d) const
+OrientedPoint Track::get_point(unsigned epi, float d) const
 {
        return get_point(epi, active_path, d);
 }
@@ -246,12 +251,12 @@ bool Track::snap(Snap &sn, float limit, SnapType what) const
        {
                Vector local = rotated_vector(sn.position-position, -rotation);
 
-               TrackPoint tp = type.get_nearest_point(local);
-               Vector span = local-tp.pos;
+               OrientedPoint np = type.get_nearest_point(local);
+               Vector span = local-np.position;
                if(dot(span, span)<=limit*limit)
                {
-                       sn.position = position+rotated_vector(tp.pos, rotation);
-                       sn.rotation = tp.dir+rotation;
+                       sn.position = position+rotated_vector(np.position, rotation);
+                       sn.rotation = np.rotation+rotation;
                        return true;
                }
        }