source/engineer/trainview.cpp

   1 #include <msp/core/maputils.h>
   2 #include <msp/gl/tests.h>
   3 #include <msp/gltk/button.h>
   4 #include <msp/gltk/image.h>
   5 #include <msp/gltk/label.h>
   6 #include <msp/strings/format.h>
   7 #include "libr2c2/vehicle.h"
   8 #include "libr2c2/vehicletype.h"
   9 #include "engineer.h"
  10 #include "trainview.h"
  11
  12 using namespace Msp;
  13 using namespace R2C2;
  14
  15 TrainView::TrainView(Engineer &e, const Train &t):
  16         engineer(e),
  17         train(t),
  18         mode(SIDE),
  19         forward(true),
  20         view(engineer.get_layout_3d(), 400, 300)
  21 {
  22         Loader::WidgetMap widgets;
  23         DataFile::load(*this, "data/trainview.ui", widgets);
  24
  25         dynamic_cast<GLtk::Label *>(get_item(widgets, "lbl_title"))->set_text(format("View of %s", train.get_name()));
  26         dynamic_cast<GLtk::Toggle *>(get_item(widgets, "tgl_forward"))->signal_toggled.connect(sigc::mem_fun(this, &TrainView::set_forward));
  27         dynamic_cast<GLtk::Toggle *>(get_item(widgets, "tgl_roof"))->signal_toggled.connect(sigc::bind(sigc::mem_fun(this, &TrainView::ui_mode_toggled), ROOF));
  28         dynamic_cast<GLtk::Toggle *>(get_item(widgets, "tgl_side"))->signal_toggled.connect(sigc::bind(sigc::mem_fun(this, &TrainView::ui_mode_toggled), SIDE));
  29         dynamic_cast<GLtk::Toggle *>(get_item(widgets, "tgl_head"))->signal_toggled.connect(sigc::bind(sigc::mem_fun(this, &TrainView::ui_mode_toggled), HEAD));
  30
  31         tex.set_min_filter(GL::LINEAR);
  32         tex.storage(GL::RGB, 400, 300);
  33         tex.image(0, GL::RGB, GL::UNSIGNED_BYTE, 0);
  34         fbo.attach(GL::COLOR_ATTACHMENT0, tex, 0);
  35         depth.storage(GL::DEPTH_COMPONENT, 400, 300);
  36         fbo.attach(GL::DEPTH_ATTACHMENT, depth);
  37
  38         view.get_camera().set_depth_clip(0.01, 10);
  39
  40         dynamic_cast<GLtk::Image *>(get_item(widgets, "img_view"))->set_image(&tex);
  41
  42         engineer.add_train_view(*this);
  43 }
  44
  45 TrainView::~TrainView()
  46 {
  47         engineer.remove_train_view(*this);
  48 }
  49
  50 void TrainView::set_mode(Mode m)
  51 {
  52         mode = m;
  53 }
  54
  55 void TrainView::ui_mode_toggled(bool v, Mode m)
  56 {
  57         if(v)
  58                 set_mode(m);
  59 }
  60
  61 void TrainView::set_forward(bool f)
  62 {
  63         forward = f;
  64 }
  65
  66 void TrainView::prepare()
  67 {
  68         const Vehicle &veh = train.get_vehicle(0);
  69         const Vector &pos = veh.get_position();
  70         Angle angle = veh.get_rotation();
  71         if(!forward)
  72                 angle += Angle::half_turn();
  73         Vector fwd_vec = rotated_vector(Vector(1, 0, 0), angle);
  74         Vector side_vec = rotated_vector(Vector(0, -1, 0), angle);
  75         float l = veh.get_type().get_length();
  76
  77         GL::Camera &camera = view.get_camera();
  78         switch(mode)
  79         {
  80         case ROOF:
  81                 camera.set_position(pos-l*fwd_vec+Vector(0, 0, 0.07));
  82                 camera.set_look_direction(fwd_vec-Vector(0, 0, 0.2));
  83                 break;
  84         case SIDE:
  85                 camera.set_position(pos-0.08f*fwd_vec+0.05f*side_vec+Vector(0, 0, 0.03));
  86                 camera.set_look_direction(fwd_vec-side_vec*0.2f);
  87                 break;
  88         case HEAD:
  89                 camera.set_position(pos+fwd_vec*(l*0.55f)+Vector(0, 0, 0.03));
  90                 camera.set_look_direction(fwd_vec);
  91                 break;
  92         }
  93
  94         GL::Bind _bind_fbo(fbo);
  95         fbo.clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
  96         view.render();
  97 }