Add a pathfinder function to Route

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

diff --git a/source/libmarklin/track.cpp b/source/libmarklin/track.cpp
index 5843e22f017953474588c956ca73798fcbf4b4be..7c08b6c46766c0d3e116c775d2f9f802e5c81653 100644 (file)
--- a/source/libmarklin/track.cpp
+++ b/source/libmarklin/track.cpp
@@ -31,6 +31,8 @@ Track::Track(Layout &l, const TrackType &t):
 
        if(layout.has_driver())
                layout.get_driver().signal_turnout.connect(sigc::mem_fun(this, &Track::turnout_event));
+
+       for(unsigned paths = type.get_paths(); !(paths&1); ++active_path, paths>>=1) ;
 }
 
 Track::~Track()
@@ -55,7 +57,8 @@ void Track::set_rotation(float r)
 
 void Track::set_slope(float s)
 {
-       if(links.size()!=2) return;
+       if(links.size()!=2)
+               return;
 
        slope = s;
 }
@@ -286,79 +289,30 @@ unsigned Track::traverse(unsigned i, unsigned path) const
        throw Exception("Track endpoint did not have a counterpart");
 }
 
-Point Track::get_point(unsigned epi, unsigned path, float d) const
+TrackPoint Track::get_point(unsigned epi, unsigned path, float d) const
 {
-       const vector<Endpoint> &eps = type.get_endpoints();
-       if(epi>=eps.size())
-               throw InvalidParameterValue("Endpoint index out of range");
+       TrackPoint p = type.get_point(epi, path, d);
+       float c = cos(rot);
+       float s = sin(rot);
 
-       float x = eps[epi].pos.x;
-       float y = eps[epi].pos.y;
-       float z = 0;
-       float slope_norm = 0;
-       if(eps.size()==2)
+       p.pos = Point(pos.x+c*p.pos.x-s*p.pos.y, pos.y+s*p.pos.x+c*p.pos.y, 0);
+       if(type.get_endpoints().size()==2)
        {
-               slope_norm = slope/type.get_total_length();
-               if(epi==1)
+               float len = type.get_path_length(path);
+               float grade = slope/len;
+               if(epi==0)
                {
-                       z = slope;
-                       slope_norm = -slope_norm;
+                       p.pos.z = pos.z+grade*d;
+                       p.grade = grade;
                }
-       }
-
-       const vector<TrackPart> &parts = type.get_parts();
-       const TrackPart *last_part = 0;
-       while(1)
-       {
-               for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+               else
                {
-                       if((eps[epi].paths&(1<<path)) && i->path!=path)
-                               continue;
-                       if(&*i==last_part)
-                               continue;
-
-                       vector<Endpoint> part_eps;
-                       i->collect_endpoints(part_eps);
-                       for(unsigned j=0; j<part_eps.size(); ++j)
-                       {
-                               float dx = part_eps[j].pos.x-x;
-                               float dy = part_eps[j].pos.y-y;
-                               if(dx*dx+dy*dy<1e-6)
-                               {
-                                       float plen = i->length;
-                                       if(i->radius)
-                                               plen *= abs(i->radius);
-                                       if(d<plen)
-                                       {
-                                               z += d*slope_norm;
-                                               if(j==1)
-                                                       d = plen-d;
-                                               Point p = i->get_point(d);
-                                               float c = cos(rot);
-                                               float s = sin(rot);
-                                               return Point(pos.x+c*p.x-s*p.y, pos.y+c*p.y+s*p.x, pos.z+z);
-                                       }
-                                       else if(part_eps.size()>1)
-                                       {
-                                               d -= plen;
-                                               x = part_eps[1-j].pos.x;
-                                               y = part_eps[1-j].pos.y;
-                                               z += plen*slope_norm;
-                                               last_part = &*i;
-                                               i = parts.begin();
-                                               break;
-                                       }
-                                       else
-                                               return pos;
-                               }
-                       }
+                       p.pos.z = pos.z+slope-grade*d;
+                       p.grade = -grade;
                }
-
-               if(!last_part)
-                       throw Exception("Internal error (Endpoint does not match any part)");
-               else
-                       return pos;
        }
+
+       return p;
 }
 
 void Track::save(list<DataFile::Statement> &st) const