#include "tracktype.h"
using namespace std;
+using namespace Msp;
namespace Marklin {
{
float len = 0;
for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
- if(p<0 || i->path==static_cast<unsigned>(p))
- {
- float l = i->length;
- if(i->radius)
- l *= abs(i->radius);
- len += l;
- }
+ if(p<0 || i->get_path()==static_cast<unsigned>(p))
+ len += i->get_length();
return len;
}
{
unsigned mask = 0;
for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
- mask |= 1<<i->path;
+ mask |= 1<<i->get_path();
return mask;
}
return get_n_paths()>2;
}
-void TrackType::collect_endpoints()
+TrackPoint TrackType::get_point(unsigned epi, unsigned path, float d) const
{
- endpoints.clear();
+ if(epi>=endpoints.size())
+ throw InvalidParameterValue("Endpoint index out of range");
- for(vector<TrackPart>::iterator i=parts.begin(); i!=parts.end(); ++i)
- i->collect_endpoints(endpoints);
-
- for(vector<Endpoint>::iterator i=endpoints.begin(); i!=endpoints.end();)
+ const TrackPart *part = 0;
+ unsigned part_ep = 0;
+ for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
{
- bool rm = false;
- for(vector<Endpoint>::iterator j=i+1; j!=endpoints.end();)
+ if((endpoints[epi].paths&(1<<path)) && i->get_path()!=path)
+ continue;
+
+ unsigned n_part_eps = (i->is_dead_end() ? 1 : 2);
+ for(unsigned j=0; j<n_part_eps; ++j)
{
- float dx = i->pos.x-j->pos.x;
- float dy = i->pos.y-j->pos.y;
- if(dx*dx+dy*dy<0.0001)
+ TrackPoint p = i->get_point(j ? i->get_length() : 0);
+ float dx = p.pos.x-endpoints[epi].pos.x;
+ float dy = p.pos.y-endpoints[epi].pos.y;
+ if(dx*dx+dy*dy<1e-6)
{
- float da = i->dir-j->dir;
- if(da<-M_PI)
- da += M_PI*2;
- if(da>M_PI)
- da -= M_PI*2;
- if(da<-3.1 || da>3.1)
- rm = true;
- i->paths |= j->paths;
- j = endpoints.erase(j);
+ part = &*i;
+ part_ep = j;
}
- else
- ++j;
}
+ }
- if(rm)
- i = endpoints.erase(i);
+ if(!part)
+ throw Exception("Internal error (endpoint does not match any part)");
+
+ while(1)
+ {
+ float plen = part->get_length();
+ if(d<=plen)
+ {
+ if(part_ep==1)
+ d = plen-d;
+ TrackPoint p = part->get_point(d);
+ if(part_ep==1)
+ p.dir += M_PI;
+ return p;
+ }
else
- ++i;
+ {
+ d -= plen;
+ TrackPart *next = part->get_link(1-part_ep);
+ if(!next)
+ throw InvalidParameterValue("Distance out of range");
+ part_ep = (next->get_link(0)==part ? 0 : 1);
+ part = next;
+ }
+ }
+}
+
+void TrackType::collect_endpoints()
+{
+ endpoints.clear();
+
+ for(vector<TrackPart>::iterator i=parts.begin(); i!=parts.end(); ++i)
+ {
+ for(vector<TrackPart>::iterator j=i; ++j!=parts.end();)
+ i->check_link(*j);
+
+ unsigned n_part_eps = (i->is_dead_end() ? 1 : 2);
+ for(unsigned j=0; j<n_part_eps; ++j)
+ if(!i->get_link(j))
+ {
+ TrackPoint p = i->get_point(j ? i->get_length() : 0);
+ if(j==0)
+ p.dir += M_PI;
+
+ bool found = false;
+ for(vector<Endpoint>::iterator k=endpoints.begin(); k!=endpoints.end(); ++k)
+ {
+ float dx = k->pos.x-p.pos.x;
+ float dy = k->pos.y-p.pos.y;
+
+ float da = k->dir-p.dir;
+ while(da>M_PI)
+ da -= M_PI*2;
+ while(da<-M_PI)
+ da += M_PI*2;
+
+ if(dx*dx+dy*dy<1e-6 && da>-0.01 && da<0.01)
+ {
+ k->paths |= 1<<i->get_path();
+ found = true;
+ break;
+ }
+ }
+
+ if(!found)
+ endpoints.push_back(Endpoint(p.pos.x, p.pos.y, p.dir, 1<<i->get_path()));
+ }
}
}