source/3d/track.cpp

   1 #include <cmath>
   2 #include <msp/gl/matrix.h>
   3 #include <msp/gl/renderer.h>
   4 #include "libr2c2/tracktype.h"
   5 #include "endpoint.h"
   6 #include "layout.h"
   7 #include "path.h"
   8 #include "track.h"
   9 #include "tracktype.h"
  10
  11 using namespace std;
  12 using namespace Msp;
  13
  14 namespace R2C2 {
  15
  16 Track3D::Track3D(Layout3D &l, Track &t):
  17         GL::ObjectInstance(l.get_catalogue().get_track(t.get_type()).get_object()),
  18         layout(l),
  19         track(t),
  20         type(layout.get_catalogue().get_track(track.get_type())),
  21         path(new Path3D(*this))
  22 {
  23         layout.add_track(*this);
  24         layout.get_scene().add(*this);
  25
  26         const vector<TrackType::Endpoint> &type_eps = track.get_type().get_endpoints();
  27         const vector<Track *> &links = track.get_links();
  28         for(unsigned i=0; i<type_eps.size(); ++i)
  29         {
  30                 if(!links[i] || links[i]>&track)
  31                         endpoints.push_back(new Endpoint3D(*this, i));
  32                 else
  33                         endpoints.push_back(0);
  34         }
  35
  36         track.signal_link_changed.connect(sigc::mem_fun(this, &Track3D::link_changed));
  37 }
  38
  39 Track3D::~Track3D()
  40 {
  41         delete path;
  42
  43         layout.remove_track(*this);
  44         layout.get_scene().remove(*this);
  45
  46         for(vector<Endpoint3D *>::iterator i=endpoints.begin(); i!=endpoints.end(); ++i)
  47                 delete *i;
  48 }
  49
  50 void Track3D::get_bounds(const Angle &angle, Vector &minp, Vector &maxp) const
  51 {
  52         type.get_bounds(angle-track.get_rotation(), minp, maxp);
  53
  54         Vector pos = rotated_vector(track.get_position(), -angle);
  55         minp += pos;
  56         maxp += pos;
  57
  58         float slope = track.get_slope();
  59         if(slope>0)
  60                 maxp.z += slope;
  61         else
  62                 minp.z += slope;
  63 }
  64
  65 Vector Track3D::get_node() const
  66 {
  67         Vector minp;
  68         Vector maxp;
  69         type.get_bounds(Angle::zero(), minp, maxp);
  70
  71         return track.get_position()+rotated_vector((minp+maxp)/2.0f, track.get_rotation())+Vector(0, 0, 0.02);
  72 }
  73
  74 GL::Matrix Track3D::create_matrix() const
  75 {
  76         GL::Matrix matrix;
  77         matrix.translate(track.get_position());
  78         matrix.rotate(track.get_rotation(), 0, 0, 1);
  79         matrix.rotate(track.get_slope()/track.get_type().get_total_length(), 0, -1, 0);
  80
  81         return matrix;
  82 }
  83
  84 void Track3D::setup_render(Msp::GL::Renderer &renderer, const GL::Tag &) const
  85 {
  86         renderer.matrix_stack() *= create_matrix();
  87 }
  88
  89 void Track3D::link_changed(unsigned i, Track *trk)
  90 {
  91         if(!trk || trk>&track)
  92         {
  93                 if(!endpoints[i])
  94                         endpoints[i] = new Endpoint3D(*this, i);
  95         }
  96         else if(endpoints[i])
  97         {
  98                 delete endpoints[i];
  99                 endpoints[i] = 0;
 100         }
 101 }
 102
 103 } // namespace R2C2