source/3d/catalogue.cpp

   1 #include <msp/fs/stat.h>
   2 #include <msp/gl/meshbuilder.h>
   3 #include <msp/gl/object.h>
   4 #include <msp/gl/program.h>
   5 #include <msp/gl/technique.h>
   6 #include "catalogue.h"
   7 #include "signaltype.h"
   8 #include "tracktype.h"
   9 #include "vehicletype.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 namespace R2C2 {
  15
  16 Catalogue3D::Catalogue3D(Catalogue &c):
  17         catalogue(c),
  18         endpoint_mesh((GL::NORMAL3, GL::VERTEX3))
  19 {
  20         add_type<GL::Material>().creator(&Catalogue3D::create<GL::Material>);
  21         add_type<GL::Mesh>().creator(&Catalogue3D::create<GL::Mesh>);
  22         add_type<GL::Object>().creator(&Catalogue3D::create<GL::Object>);
  23         add_type<GL::Program>().creator(&Catalogue3D::create<GL::Program>);
  24         add_type<GL::Technique>().creator(&Catalogue3D::create<GL::Technique>);
  25
  26         catalogue.signal_object_added.connect(sigc::mem_fun(this, &Catalogue3D::object_added));
  27
  28         const Catalogue::ObjectMap &objs = catalogue.get_all();
  29         for(Catalogue::ObjectMap::const_iterator i=objs.begin(); i!=objs.end(); ++i)
  30                 object_added(*i->second);
  31
  32         build_endpoint_mesh();
  33 }
  34
  35 Catalogue3D::~Catalogue3D()
  36 {
  37         for(map<const ObjectType *, ObjectType3D *>::iterator i=objects.begin(); i!=objects.end(); ++i)
  38                 delete i->second;
  39 }
  40
  41 void Catalogue3D::object_added(const ObjectType &ot)
  42 {
  43         if(const TrackType *tt = dynamic_cast<const TrackType *>(&ot))
  44                 objects[&ot] = new TrackType3D(*this, *tt);
  45         else if(const SignalType *st = dynamic_cast<const SignalType *>(&ot))
  46                 objects[&ot] = new SignalType3D(*this, *st);
  47         else if(const VehicleType *vt = dynamic_cast<const VehicleType *>(&ot))
  48                 objects[&ot] = new VehicleType3D(*this, *vt);
  49 }
  50
  51 const ObjectType3D &Catalogue3D::get_3d(const ObjectType &ot) const
  52 {
  53         return *get_item(objects, &ot);
  54 }
  55
  56 void Catalogue3D::build_endpoint_mesh()
  57 {
  58         const Profile &ballast_profile = catalogue.get_ballast_profile();
  59         const Vector &ballast_min = ballast_profile.get_min_coords();
  60         const Vector &ballast_max = ballast_profile.get_max_coords();
  61
  62         const Profile &rail_profile = catalogue.get_rail_profile();
  63         const Vector &rail_min = rail_profile.get_min_coords();
  64         const Vector &rail_max = rail_profile.get_max_coords();
  65
  66         float gauge = catalogue.get_gauge();
  67
  68         float width = max(max(-ballast_min.x, ballast_max.x)*2, gauge+(rail_max.x-rail_min.x)*2)+0.004;
  69         float height = ballast_max.y-ballast_min.y+rail_max.y-rail_min.y+0.01;
  70
  71         GL::MeshBuilder bld(endpoint_mesh);
  72         bld.normal(1, 0, 0);
  73         bld.begin(GL::QUADS);
  74         bld.vertex(0, width/2, 0);
  75         bld.vertex(0, width/2, height);
  76         bld.vertex(0, -width/2, height);
  77         bld.vertex(0, -width/2, 0);
  78         bld.end();
  79 }
  80
  81 FS::Path Catalogue3D::locate_file(const string &name)
  82 {
  83         if(FS::exists(name))
  84                 return name;
  85
  86         FS::Path path = FS::Path("data")/name;
  87         if(FS::exists(path))
  88                 return path;
  89
  90         throw runtime_error("Can't locate "+name);
  91 }
  92
  93 template<typename T>
  94 T *Catalogue3D::create(const string &name)
  95 {
  96         RefPtr<T> obj = new T;
  97         DataFile::load(*obj, locate_file(name).str());
  98         return obj.release();
  99 }
 100
 101 template<typename T>
 102 T *Catalogue3D::create2(const string &name)
 103 {
 104         RefPtr<T> obj = new T;
 105         DataFile::load(*obj, locate_file(name).str(), *this);
 106         return obj.release();
 107 }
 108
 109 } // namespace R2C2