source/libr2c2/vehicleplacement.h

   1 #ifndef LIBR2C2_VEHICLEPLACEMENT_H_
   2 #define LIBR2C2_VEHICLEPLACEMENT_H_
   3
   4 #include <vector>
   5 #include "trackoffsetiter.h"
   6 #include "vehicletype.h"
   7
   8 namespace R2C2 {
   9
  10 class VehiclePlacement
  11 {
  12 public:
  13         enum Anchor
  14         {
  15                 CENTER,
  16                 FRONT_AXLE,
  17                 FRONT_BUFFER,
  18                 BACK_AXLE,
  19                 BACK_BUFFER
  20         };
  21
  22 private:
  23         struct Axle
  24         {
  25                 const VehicleType::Axle *type;
  26                 TrackOffsetIter position;
  27
  28                 Axle(const VehicleType::Axle &);
  29         };
  30
  31         const VehicleType &type;
  32         std::vector<Axle> axles;
  33         float front_back_span;
  34         float front_back_ratio;
  35
  36 public:
  37         VehiclePlacement(const VehicleType &);
  38
  39         void place(const TrackOffsetIter &, Anchor = CENTER);
  40 private:
  41         float get_anchor_position(Anchor) const;
  42 public:
  43         void place_after(const VehiclePlacement &);
  44         void place_before(const VehiclePlacement &);
  45         void unplace();
  46         bool is_placed() const;
  47
  48         OrientedPoint get_point() const;
  49         const TrackOffsetIter &get_axle_position(unsigned) const;
  50         TrackOffsetIter get_position(Anchor) const;
  51         OrientedPoint get_axle_point(unsigned) const;
  52         OrientedPoint get_bogie_point(unsigned) const;
  53 private:
  54         OrientedPoint get_front_point() const;
  55         OrientedPoint get_back_point() const;
  56         OrientedPoint get_bogie_point_from_axle(unsigned) const;
  57         static OrientedPoint create_point(const Vector &, const Vector &, float);
  58
  59 public:
  60         void advance(float, Anchor = CENTER);
  61 private:
  62         void fix_positions(float);
  63         void fix_bogie_position(unsigned);
  64         static float compute_adjustment(const Vector &, const Vector &, float, float &);
  65 };
  66
  67 } // namespace R2C2
  68
  69 #endif