source/3d/catalogue.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2010 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <msp/fs/stat.h>
   9 #include <msp/gl/meshbuilder.h>
  10 #include <msp/gl/object.h>
  11 #include <msp/gl/program.h>
  12 #include <msp/gl/technique.h>
  13 #include "catalogue.h"
  14 #include "tracktype.h"
  15 #include "vehicletype.h"
  16
  17 using namespace std;
  18 using namespace Msp;
  19
  20 namespace R2C2 {
  21
  22 Catalogue3D::Catalogue3D(Catalogue &c):
  23         catalogue(c),
  24         endpoint_mesh((GL::NORMAL3, GL::VERTEX3))
  25 {
  26         add_creator<GL::Material>(&Catalogue3D::create<GL::Material>);
  27         add_creator<GL::Mesh>(&Catalogue3D::create<GL::Mesh>);
  28         add_creator<GL::Object>(&Catalogue3D::create2<GL::Object>);
  29         add_creator<GL::Program>(&Catalogue3D::create<GL::Program>);
  30         add_creator<GL::Technique>(&Catalogue3D::create2<GL::Technique>);
  31
  32         catalogue.signal_track_added.connect(sigc::mem_fun(this, &Catalogue3D::track_added));
  33         catalogue.signal_vehicle_added.connect(sigc::mem_fun(this, &Catalogue3D::vehicle_added));
  34
  35         const Catalogue::TrackMap &trks = catalogue.get_tracks();
  36         for(Catalogue::TrackMap::const_iterator i=trks.begin(); i!=trks.end(); ++i)
  37                 track_added(*i->second);
  38
  39         build_endpoint_mesh();
  40 }
  41
  42 Catalogue3D::~Catalogue3D()
  43 {
  44         for(map<const TrackType *, TrackType3D *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  45                 delete i->second;
  46         for(map<const VehicleType *, VehicleType3D *>::iterator i=vehicles.begin(); i!=vehicles.end(); ++i)
  47                 delete i->second;
  48 }
  49
  50 const TrackType3D &Catalogue3D::get_track(const TrackType &tt) const
  51 {
  52         map<const TrackType *, TrackType3D *>::const_iterator i = tracks.find(&tt);
  53         if(i==tracks.end())
  54                 throw KeyError("Unknown track type");
  55
  56         return *i->second;
  57 }
  58
  59 const VehicleType3D &Catalogue3D::get_vehicle(const VehicleType &vt) const
  60 {
  61         map<const VehicleType *, VehicleType3D *>::const_iterator i = vehicles.find(&vt);
  62         if(i==vehicles.end())
  63                 throw KeyError("Unknown vehicle type");
  64
  65         return *i->second;
  66 }
  67
  68 void Catalogue3D::track_added(const TrackType &track)
  69 {
  70         tracks[&track] = new TrackType3D(*this, track);
  71 }
  72
  73 void Catalogue3D::vehicle_added(const VehicleType &veh)
  74 {
  75         vehicles[&veh] = new VehicleType3D(*this, veh);
  76 }
  77
  78 void Catalogue3D::build_endpoint_mesh()
  79 {
  80         const Profile &ballast_profile = catalogue.get_ballast_profile();
  81         const Point &ballast_min = ballast_profile.get_min_coords();
  82         const Point &ballast_max = ballast_profile.get_max_coords();
  83
  84         const Profile &rail_profile = catalogue.get_rail_profile();
  85         const Point &rail_min = rail_profile.get_min_coords();
  86         const Point &rail_max = rail_profile.get_max_coords();
  87
  88         float gauge = catalogue.get_gauge();
  89
  90         float width = max(max(-ballast_min.x, ballast_max.x)*2, gauge+(rail_max.x-rail_min.x)*2)+0.004;
  91         float height = ballast_max.y-ballast_min.y+rail_max.y-rail_min.y+0.01;
  92
  93         GL::MeshBuilder bld(endpoint_mesh);
  94         bld.normal(1, 0, 0);
  95         bld.begin(GL::QUADS);
  96         bld.vertex(0, width/2, 0);
  97         bld.vertex(0, width/2, height);
  98         bld.vertex(0, -width/2, height);
  99         bld.vertex(0, -width/2, 0);
 100         bld.end();
 101 }
 102
 103 FS::Path Catalogue3D::locate_file(const string &name)
 104 {
 105         if(FS::exists(name))
 106                 return name;
 107
 108         FS::Path path = FS::Path("data")/name;
 109         if(FS::exists(path))
 110                 return path;
 111
 112         throw Exception("Can't locate "+name);
 113 }
 114
 115 template<typename T>
 116 T *Catalogue3D::create(const string &name)
 117 {
 118         RefPtr<T> obj = new T;
 119         DataFile::load(*obj, locate_file(name).str());
 120         return obj.release();
 121 }
 122
 123 template<typename T>
 124 T *Catalogue3D::create2(const string &name)
 125 {
 126         RefPtr<T> obj = new T;
 127         DataFile::load(*obj, locate_file(name).str(), *this);
 128         return obj.release();
 129 }
 130
 131 } // namespace R2C2