source/libr2c2/tracktype.h

   1 #ifndef LIBR2C2_TRACKTYPE_H_
   2 #define LIBR2C2_TRACKTYPE_H_
   3
   4 #include <msp/datafile/objectloader.h>
   5 #include "geometry.h"
   6 #include "objecttype.h"
   7 #include "trackpart.h"
   8
   9 namespace R2C2 {
  10
  11 class TrackAppearance;
  12
  13 class TrackType: public ObjectType
  14 {
  15 public:
  16         struct Endpoint
  17         {
  18                 Vector pos;
  19                 Angle dir;  // Direction outwards from the endpoint
  20                 unsigned paths;
  21
  22                 Endpoint(float, float, const Angle &, unsigned);
  23
  24                 bool has_path(unsigned p) const { return paths&(1<<p); }
  25                 bool has_common_paths(const Endpoint &e) const { return paths&e.paths; }
  26         };
  27
  28         class Loader: public Msp::DataFile::DerivedObjectLoader<TrackType, ObjectType::Loader>
  29         {
  30         public:
  31                 typedef Msp::DataFile::Collection Collection;
  32
  33         private:
  34                 Collection &coll;
  35                 bool state_bits_set;
  36
  37         public:
  38                 Loader(TrackType &, Collection &);
  39
  40                 virtual Collection &get_collection() const { return coll; }
  41         private:
  42                 virtual void finish();
  43                 void appearance(const std::string &);
  44                 void part();
  45                 void state_bits(unsigned);
  46         };
  47
  48 private:
  49         const TrackAppearance *appearance;
  50         std::vector<TrackPart> parts;
  51         std::vector<Endpoint> endpoints;
  52         unsigned state_bits;
  53         unsigned autofit_preference;
  54         std::string object;
  55
  56 public:
  57         TrackType();
  58
  59         const TrackAppearance &get_appearance() const;
  60         float get_gauge() const;
  61         float get_total_length() const;
  62         float get_path_length(int) const;
  63         unsigned get_paths() const;
  64         unsigned get_n_paths() const;
  65         unsigned coerce_path(unsigned, unsigned) const;
  66         unsigned get_state_bits() const { return state_bits; }
  67         bool is_turnout() const;
  68         bool is_dead_end() const;
  69         unsigned get_autofit_preference() const { return autofit_preference; }
  70         const std::string &get_object() const { return object; }
  71         const std::vector<TrackPart> &get_parts() const { return parts; }
  72         const std::vector<Endpoint> &get_endpoints() const { return endpoints; }
  73         const Endpoint &get_endpoint(unsigned) const;
  74         OrientedPoint get_point(unsigned, unsigned, float) const;
  75         OrientedPoint get_nearest_point(const Vector &) const;
  76
  77 private:
  78         void collect_endpoints();
  79 };
  80
  81 } // namespace R2C2
  82
  83 #endif