source/3d/path.cpp

   1 #include <msp/gl/matrix.h>
   2 #include <msp/gl/renderer.h>
   3 #include "libr2c2/tracktype.h"
   4 #include "layout.h"
   5 #include "path.h"
   6 #include "track.h"
   7 #include "tracktype.h"
   8
   9 using namespace std;
  10 using namespace Msp;
  11
  12 namespace R2C2 {
  13
  14 Path3D::Path3D(const Track3D &t):
  15         Utility3D(t.get_layout()),
  16         track(t),
  17         path(t.get_track().get_active_path()),
  18         side(0),
  19         automatic(true),
  20         mesh(0),
  21         z_offs(0)
  22 {
  23         update_mesh();
  24
  25         layout.get_path_scene().add(*this);
  26         if(track.get_track().get_type().is_turnout())
  27                 track.get_track().signal_path_changed.connect(sigc::mem_fun(this, &Path3D::path_changed));
  28 }
  29
  30 Path3D::~Path3D()
  31 {
  32         layout.get_path_scene().remove(*this);
  33 }
  34
  35 void Path3D::set_automatic()
  36 {
  37         automatic = true;
  38 }
  39
  40 void Path3D::set_path(int p)
  41 {
  42         if(p>=0 && !(track.get_track().get_type().get_paths()&(1<<p)))
  43                 throw invalid_argument("Path3D::set_path");
  44         automatic = false;
  45         path = p;
  46         update_mesh();
  47 }
  48
  49 void Path3D::set_side(int s)
  50 {
  51         side = (s<0 ? -1 : s>0 ? 1 : 0);
  52         update_mesh();
  53 }
  54
  55 void Path3D::set_color(const GL::Color &c)
  56 {
  57         color = c;
  58 }
  59
  60 void Path3D::set_layer(float l)
  61 {
  62         z_offs = l*track.get_track().get_type().get_appearance().get_gauge()*0.01;
  63 }
  64
  65 void Path3D::path_changed(unsigned p)
  66 {
  67         if(automatic)
  68         {
  69                 path = p;
  70                 update_mesh();
  71         }
  72 }
  73
  74 void Path3D::update_mesh()
  75 {
  76         mesh = &track.get_type().get_path_mesh(path, side);
  77 }
  78
  79 long Path3D::get_instance_key() const
  80 {
  81         return reinterpret_cast<long>(&track.get_type());
  82 }
  83
  84 void Path3D::render(GL::Renderer &renderer, const GL::Tag &tag) const
  85 {
  86         if(tag=="unlit")
  87         {
  88                 GL::MatrixStack::Push push_mtx(renderer.matrix_stack());
  89                 renderer.matrix_stack() *= track.Object3D::get_matrix();
  90                 renderer.matrix_stack() *= GL::Matrix::translation(0, 0, z_offs);
  91
  92                 glColor4f(color.r, color.g, color.b, color.a);
  93                 mesh->draw(renderer);
  94         }
  95 }
  96
  97 } // namespace R2C2