source/designer/designer.cpp

   1 #include <signal.h>
   2 #include <algorithm>
   3 #include <cmath>
   4 #include <msp/fs/utils.h>
   5 #include <msp/gl/blend.h>
   6 #include <msp/gl/framebuffer.h>
   7 #include <msp/gl/matrix.h>
   8 #include <msp/gl/misc.h>
   9 #include <msp/gl/tests.h>
  10 #include <msp/gl/texture2d.h>
  11 #include <msp/input/keys.h>
  12 #include <msp/io/print.h>
  13 #include <msp/stringcodec/codec.h>
  14 #include <msp/stringcodec/utf8.h>
  15 #include <msp/strings/lexicalcast.h>
  16 #include <msp/strings/utils.h>
  17 #include <msp/time/units.h>
  18 #include <msp/time/utils.h>
  19 #include "libr2c2/route.h"
  20 #include "libr2c2/tracktype.h"
  21 #include "libr2c2/zone.h"
  22 #include "3d/path.h"
  23 #include "designer.h"
  24 #include "input.h"
  25 #include "layoutbar.h"
  26 #include "manipulator.h"
  27 #include "measure.h"
  28 #include "routebar.h"
  29 #include "selection.h"
  30 #include "svgexporter.h"
  31 #include "trackbar.h"
  32 #include "trackproperties.h"
  33 #include "zonebar.h"
  34 #include "zoneproperties.h"
  35
  36 using namespace std;
  37 using namespace R2C2;
  38 using namespace Msp;
  39
  40 Designer::Designer(int argc, char **argv):
  41         window(1280, 960),
  42         keyboard(window),
  43         mouse(window),
  44         ui_res("r2c2.res"),
  45         root(ui_res, &window, &keyboard, &mouse),
  46         base_object(0),
  47         cur_route(0),
  48         cur_zone(0),
  49         mode(SELECT),
  50         sel_wrap(selection),
  51         manipulator(*this, mouse, selection),
  52         measure(*this)
  53 {
  54         window.set_title("Railway Designer");
  55         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Designer::exit), 0));
  56
  57         selection.signal_changed.connect(sigc::mem_fun(this, &Designer::selection_changed));
  58         manipulator.signal_status.connect(sigc::mem_fun(this, &Designer::manipulation_status));
  59         manipulator.signal_done.connect(sigc::mem_fun(this, &Designer::manipulation_done));
  60         measure.signal_changed.connect(sigc::mem_fun(this, &Designer::measure_changed));
  61         measure.signal_done.connect(sigc::mem_fun(this, &Designer::measure_done));
  62
  63         // Setup catalogue and layout
  64         DataFile::load(catalogue, "tracks.dat");
  65
  66         cat_layout_3d = new Layout3D(catalogue.get_layout());
  67
  68         layout = new Layout(catalogue);
  69         layout_3d = new Layout3D(*layout);
  70
  71         layout->signal_object_added.connect(sigc::mem_fun(this, &Designer::object_added));
  72         layout->signal_object_removed.connect(sigc::mem_fun(this, &Designer::object_removed));
  73
  74         if(argc>1)
  75         {
  76                 filename = argv[1];
  77                 DataFile::load(*layout, argv[1]);
  78
  79                 if(!layout->get_base().empty())
  80                 {
  81                         base_object = new GL::Object;
  82                         DataFile::load(*base_object, layout->get_base());
  83                 }
  84         }
  85
  86         // Setup OpenGL
  87         cat_view = new View3D(*cat_layout_3d, window.get_width(), window.get_height());
  88
  89         main_view = new View3D(*layout_3d, window.get_width(), window.get_height());
  90         GL::Pipeline *pipeline = &main_view->get_pipeline();
  91
  92         GL::Pipeline::Pass *pass = &pipeline->add_pass("unlit");
  93         pass->set_depth_test(&GL::DepthTest::lequal());
  94         pass->set_blend(&GL::Blend::alpha());
  95
  96         pass = &pipeline->add_pass("blended");
  97         pass->set_lighting(&layout_3d->get_lighting());
  98         pass->set_depth_test(&GL::DepthTest::lequal());
  99         pass->set_blend(&GL::Blend::alpha());
 100
 101         pass = &pipeline->add_pass("overlay");
 102         pass->set_blend(&GL::Blend::alpha());
 103
 104         if(base_object)
 105                 pipeline->add_renderable(*base_object);
 106         pipeline->add_renderable_for_pass(layout_3d->get_path_scene(), "unlit");
 107         pipeline->add_renderable_for_pass(layout_3d->get_endpoint_scene(), "unlit");
 108
 109         // Setup UI
 110         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Designer::key_press), false));
 111         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Designer::button_press), false));
 112         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Designer::axis_motion), false));
 113         root.signal_tooltip.connect(sigc::mem_fun(this, &Designer::tooltip));
 114         root_layout = new GLtk::Layout;
 115         root_layout->set_margin(0);
 116         root.set_layout(root_layout);
 117
 118         toolbars.push_back(new Layoutbar(*this));
 119         toolbars.push_back(new Trackbar(*this));
 120         toolbars.push_back(new Routebar(*this));
 121         toolbars.push_back(new Zonebar(*this));
 122         Toolbar *prev = 0;
 123         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 124         {
 125                 root.add(**i);
 126                 if(i!=toolbars.begin())
 127                         (*i)->expand(false);
 128                 (*i)->signal_expanded.connect(sigc::hide(sigc::mem_fun(root_layout, &GLtk::Layout::update)));
 129                 if(prev)
 130                 {
 131                         root_layout->add_constraint(**i, GLtk::Layout::RIGHT_OF, *prev, 0);
 132                         root_layout->add_constraint(**i, GLtk::Layout::COPY_HEIGHT, *prev);
 133                 }
 134                 prev = *i;
 135         }
 136
 137         GLtk::Panel *statusbar = new GLtk::Panel;
 138         root.add(*statusbar);
 139         statusbar->set_focusable(false);
 140         root_layout->set_gravity(*statusbar, -1, -1);
 141         root_layout->set_expand(*statusbar, true, false);
 142
 143         lbl_status = new GLtk::Label;
 144         statusbar->add(*lbl_status);
 145         lbl_status->set_geometry(GLtk::Geometry(20, 2, 300, 16));
 146
 147         pipeline->add_renderable_for_pass(sel_wrap, "unlit");
 148         overlay = new Overlay3D(ui_res.get_default_font());
 149         pipeline->add_renderable_for_pass(*overlay, "overlay");
 150         pipeline->add_renderable_for_pass(measure, "unlit");
 151
 152         camera_ctl = new CameraController(*main_view, keyboard, mouse);
 153         cat_view->get_camera().set_look_direction(GL::Vector3(0, 0.13053, -0.99144));
 154         cat_view->view_all(true);
 155         main_view->view_all();
 156
 157         const set<Track *> &tracks = layout->get_all<Track>();
 158         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 159                 update_track_icon(layout_3d->get<Track3D>(**i));
 160 }
 161
 162 Designer::~Designer()
 163 {
 164         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 165                 delete *i;
 166         delete camera_ctl;
 167         delete overlay;
 168         delete main_view;
 169         delete base_object;
 170         delete layout_3d;
 171         delete layout;
 172         delete cat_view;
 173         delete cat_layout_3d;
 174 }
 175
 176 int Designer::main()
 177 {
 178         window.show();
 179
 180         mode = SELECT;
 181
 182         return Application::main();
 183 }
 184
 185 void Designer::save()
 186 {
 187         InputDialog *input = new InputDialog(*this, "Save layout", filename);
 188         input->signal_accept.connect(sigc::mem_fun(layout, &Layout::save));
 189         root.add(*input);
 190         root_layout->set_gravity(*input, 0, 0);
 191 }
 192
 193 void Designer::quit()
 194 {
 195         exit(0);
 196 }
 197
 198 void Designer::new_track()
 199 {
 200         if(mode!=SELECT)
 201                 return;
 202
 203         mode = CATALOGUE;
 204         lbl_status->set_text("Select new track or press Esc to cancel");
 205 }
 206
 207 void Designer::erase_tracks()
 208 {
 209         if(mode!=SELECT)
 210                 return;
 211
 212         set<Track *> tracks = selection.get_objects<Track>();
 213         selection.clear();
 214         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 215         {
 216                 overlay->clear(layout_3d->get<Track3D>(**i));
 217                 delete *i;
 218         }
 219 }
 220
 221 void Designer::track_properties()
 222 {
 223         if(mode!=SELECT || selection.empty())
 224                 return;
 225
 226         TrackProperties *track_prop = new TrackProperties(selection);
 227         root.add(*track_prop);
 228         root_layout->set_gravity(*track_prop, 0, 0);
 229
 230         track_prop->signal_response.connect(sigc::mem_fun(this, &Designer::track_properties_response));
 231 }
 232
 233 void Designer::extend_track()
 234 {
 235         if(mode!=SELECT)
 236                 return;
 237
 238         if(manipulator.start_extend())
 239                 mode = MANIPULATE;
 240 }
 241
 242 void Designer::connect_tracks()
 243 {
 244         if(mode!=SELECT)
 245                 return;
 246
 247         manipulator.connect();
 248 }
 249
 250 void Designer::flatten_tracks()
 251 {
 252         if(mode!=SELECT)
 253                 return;
 254
 255         manipulator.flatten();
 256 }
 257
 258 void Designer::svg_export()
 259 {
 260         InputDialog *input = new InputDialog(*this, "SVG export", FS::basepart(filename)+".svg");
 261         input->signal_accept.connect(sigc::mem_fun(this, &Designer::svg_export_accept));
 262         root.add(*input);
 263         root_layout->set_gravity(*input, 0, 0);
 264 }
 265
 266 void Designer::edit_route(Route *r)
 267 {
 268         cur_route = r;
 269         cur_zone = 0;
 270         if(cur_route)
 271                 show_route(*cur_route);
 272         else
 273                 clear_paths();
 274 }
 275
 276 void Designer::rename_route()
 277 {
 278         if(mode!=SELECT || !cur_route)
 279                 return;
 280
 281         InputDialog *input = new InputDialog(*this, "Route name", cur_route->get_name());
 282         input->signal_accept.connect(sigc::mem_fun(this, &Designer::route_name_accept));
 283         root.add(*input);
 284         root_layout->set_gravity(*input, 0, 0);
 285 }
 286
 287 void Designer::add_selection_to_route()
 288 {
 289         if(!cur_route)
 290                 return;
 291
 292         try
 293         {
 294                 cur_route->add_tracks(selection.get_objects<Track>());
 295         }
 296         catch(const exception &e)
 297         {
 298                 lbl_status->set_text(e.what());
 299         }
 300
 301         show_route(*cur_route);
 302 }
 303
 304 void Designer::edit_zone(Zone *z)
 305 {
 306         cur_zone = z;
 307         cur_route = 0;
 308         if(cur_zone)
 309                 show_zone(*cur_zone);
 310         else
 311                 clear_paths();
 312 }
 313
 314 void Designer::zone_properties()
 315 {
 316         if(!cur_zone)
 317                 return;
 318
 319         ZoneProperties *zone_prop = new ZoneProperties(*cur_zone);
 320         root.add(*zone_prop);
 321         const GLtk::Geometry &root_geom = root.get_geometry();
 322         const GLtk::Geometry &dlg_geom = zone_prop->get_geometry();
 323         zone_prop->set_position((root_geom.w-dlg_geom.w)/2, (root_geom.h-dlg_geom.h)/2);
 324 }
 325
 326 void Designer::add_selection_to_zone()
 327 {
 328         if(!cur_zone)
 329                 return;
 330
 331         try
 332         {
 333                 cur_zone->add_tracks(selection.get_objects<Track>());
 334         }
 335         catch(const exception &e)
 336         {
 337                 lbl_status->set_text(e.what());
 338         }
 339
 340         show_zone(*cur_zone);
 341 }
 342
 343 Vector Designer::map_pointer_to_ground(const Vector &p)
 344 {
 345         GL::Vector4 vec = main_view->get_camera().unproject(GL::Vector4(p.x, p.y, 0, 0));
 346         const GL::Vector3 &pos = main_view->get_camera().get_position();
 347
 348         return pos-GL::Vector3(vec.x, vec.y, vec.z)*(pos.z/vec.z);
 349 }
 350
 351 void Designer::tick()
 352 {
 353         const Msp::Time::TimeStamp t = Msp::Time::now();
 354         float dt = (t-last_tick)/Msp::Time::sec;
 355         last_tick = t;
 356
 357         if(mode==MANIPULATE_DONE)
 358                 mode = SELECT;
 359
 360         window.tick();
 361         root.tick();
 362         camera_ctl->tick(dt);
 363
 364         for(list<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
 365                 layout_3d->get<Track3D>(**i).get_path().set_mask(0);
 366         new_tracks.clear();
 367
 368         render();
 369
 370         window.swap_buffers();
 371 }
 372
 373 void Designer::key_press(unsigned key)
 374 {
 375         bool shift = keyboard.get_button_state(Input::KEY_SHIFT_L) || keyboard.get_button_state(Input::KEY_SHIFT_R);
 376
 377         if(key==Msp::Input::KEY_N && shift)
 378                 extend_track();
 379         else if(key==Msp::Input::KEY_N)
 380                 new_track();
 381         else if(key==Msp::Input::KEY_G)
 382         {
 383                 manipulator.start_move();
 384                 mode = MANIPULATE;
 385         }
 386         else if(key==Msp::Input::KEY_R)
 387         {
 388                 manipulator.start_rotate();
 389                 mode = MANIPULATE;
 390         }
 391         else if(key==Msp::Input::KEY_D)
 392         {
 393                 manipulator.duplicate();
 394                 manipulator.start_move();
 395                 mode = MANIPULATE;
 396         }
 397         else if(key==Msp::Input::KEY_W)
 398                 save();
 399         else if(key==Msp::Input::KEY_PLUS)
 400                 selection.select_more();
 401         else if(key==Msp::Input::KEY_L && shift)
 402                 selection.select_blocks();
 403         else if(key==Msp::Input::KEY_L)
 404                 selection.select_linked();
 405         else if(key==Msp::Input::KEY_M)
 406         {
 407                 measure.start();
 408                 mode = MEASURE;
 409         }
 410         else if(key==Msp::Input::KEY_Z)
 411         {
 412                 manipulator.start_elevate();
 413                 mode = MANIPULATE;
 414         }
 415         else if(key==Msp::Input::KEY_ESC)
 416         {
 417                 if(mode==MANIPULATE)
 418                         manipulator.cancel();
 419                 else if(mode==CATALOGUE)
 420                         mode = SELECT;
 421                 else
 422                         selection.clear();
 423         }
 424         else if(key==Msp::Input::KEY_X)
 425                 erase_tracks();
 426         else if(key==Msp::Input::KEY_F && shift)
 427         {
 428                 const set<Track *> &tracks = selection.get_objects<Track>();
 429                 const set<Track *> &ltracks = layout->get_all<Track>();
 430                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 431                 {
 432                         (*i)->set_flex(!(*i)->get_flex());
 433                         (*i)->break_links();
 434                         for(set<Track *>::const_iterator j=ltracks.begin(); j!=ltracks.end(); ++j)
 435                                 if(*j!=*i)
 436                                         (*i)->snap_to(**j, true);
 437
 438                         update_track_icon(layout_3d->get<Track3D>(**i));
 439                 }
 440         }
 441         else if(key==Msp::Input::KEY_F)
 442                 flatten_tracks();
 443         else if(key==Msp::Input::KEY_E && shift)
 444                 manipulator.even_slope(true);
 445         else if(key==Msp::Input::KEY_E)
 446                 manipulator.even_slope();
 447         else if(key==Msp::Input::KEY_A)
 448         {
 449                 if(cur_route)
 450                         add_selection_to_route();
 451                 else if(cur_zone)
 452                         add_selection_to_zone();
 453         }
 454         else if(key==Msp::Input::KEY_C)
 455                 connect_tracks();
 456         else if(key==Msp::Input::KEY_V)
 457                 svg_export();
 458         else if(key==Msp::Input::KEY_P)
 459                 track_properties();
 460 }
 461
 462 void Designer::button_press(unsigned btn)
 463 {
 464         bool shift = keyboard.get_button_state(Input::KEY_SHIFT_L) || keyboard.get_button_state(Input::KEY_SHIFT_R);
 465
 466         Vector pointer(mouse.get_axis_value(0), mouse.get_axis_value(1), 0);
 467         Vector ground = map_pointer_to_ground(pointer);
 468
 469         if(mode==CATALOGUE)
 470         {
 471                 if(btn==1)
 472                 {
 473                         Object *cobj = pick_object(pointer);
 474                         if(cobj)
 475                         {
 476                                 Object *obj = cobj->clone(layout);
 477                                 obj->set_position(ground);
 478
 479                                 selection.clear();
 480                                 selection.add_object(obj);
 481
 482                                 mode = SELECT;
 483                         }
 484                 }
 485                 else
 486                         mode = SELECT;
 487         }
 488         else if(mode==SELECT)
 489         {
 490                 if(btn==1)
 491                 {
 492                         Object *obj = pick_object(pointer);
 493                         if(obj)
 494                         {
 495                                 if(!shift)
 496                                         selection.clear();
 497                                 selection.toggle_object(obj);
 498                         }
 499                 }
 500         }
 501         else if(mode==MEASURE)
 502                 measure.button_press(ground.x, ground.y, btn);
 503 }
 504
 505 void Designer::axis_motion(unsigned, float, float)
 506 {
 507         Vector pointer(mouse.get_axis_value(0), mouse.get_axis_value(1), 0);
 508         float wx = pointer.x*window.get_width();
 509         float wy = pointer.y*window.get_height();
 510
 511         if(!root.get_child_at(wx, wy))
 512         {
 513                 Vector ground = map_pointer_to_ground(pointer);
 514                 measure.pointer_motion(ground.x, ground.y);
 515         }
 516 }
 517
 518 void Designer::render()
 519 {
 520         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 521
 522         View3D *view = (mode==CATALOGUE ? cat_view : main_view);
 523         view->render();
 524
 525         root.render();
 526 }
 527
 528 void Designer::object_added(Object &obj)
 529 {
 530         if(Track *trk = dynamic_cast<Track *>(&obj))
 531                 new_tracks.push_back(trk);
 532 }
 533
 534 void Designer::object_removed(Object &obj)
 535 {
 536         if(Track *trk = dynamic_cast<Track *>(&obj))
 537         {
 538                 list<Track *>::iterator i = find(new_tracks.begin(), new_tracks.end(), trk);
 539                 if(i!=new_tracks.end())
 540                         new_tracks.erase(i);
 541         }
 542 }
 543
 544 Object *Designer::pick_object(const Vector &pointer)
 545 {
 546         View3D &view = *(mode==CATALOGUE ? cat_view : main_view);
 547         const GL::Vector3 &cpos = view.get_camera().get_position();
 548         GL::Vector4 cray = view.get_camera().unproject(GL::Vector4(pointer.x, pointer.y, 0, 0));
 549
 550         return view.get_layout().get_layout().pick<Object>(Ray(cpos, Vector(cray)));
 551 }
 552
 553 void Designer::update_track_icon(Track3D &track)
 554 {
 555         overlay->clear(track);
 556
 557         if(track.get_track().get_flex())
 558                 overlay->add_graphic(track, "flex");
 559
 560         if(unsigned sid = track.get_track().get_sensor_id())
 561         {
 562                 overlay->add_graphic(track, "sensor");
 563                 overlay->set_label(track, lexical_cast<string>(sid));
 564         }
 565         else if(unsigned tid = track.get_track().get_turnout_id())
 566         {
 567                 if(tid<0x800)
 568                 {
 569                         overlay->add_graphic(track, "turnout");
 570                         overlay->set_label(track, lexical_cast<string>(tid));
 571                 }
 572         }
 573 }
 574
 575 void Designer::selection_changed()
 576 {
 577         const set<Track *> &tracks = selection.get_objects<Track>();
 578         if(tracks.empty())
 579                 lbl_status->set_text(string());
 580         else
 581         {
 582                 float len = 0;
 583                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 584                         len += (*i)->get_type().get_total_length();
 585                 lbl_status->set_text(format("%.2fm of track selected\n", len));
 586         }
 587 }
 588
 589 void Designer::manipulation_status(const string &status)
 590 {
 591         lbl_status->set_text(status);
 592 }
 593
 594 void Designer::manipulation_done(bool)
 595 {
 596         mode = MANIPULATE_DONE;
 597         selection_changed();
 598 }
 599
 600 void Designer::measure_changed()
 601 {
 602         float pard = measure.get_parallel_distance()*1000;
 603         float perpd = measure.get_perpendicular_distance()*1000;
 604         float d = sqrt(pard*pard+perpd*perpd);
 605         const Angle &adiff = measure.get_angle_difference();
 606         string info = format("Par %.1fmm - Perp %.1fmm - Total %.1fmm - Angle %.1f°", pard, perpd, d, adiff.degrees());
 607         lbl_status->set_text(info);
 608 }
 609
 610 void Designer::measure_done()
 611 {
 612         mode = SELECT;
 613         selection_changed();
 614 }
 615
 616 void Designer::track_properties_response(int)
 617 {
 618         const set<Track *> &tracks = selection.get_objects<Track>();
 619         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 620                 update_track_icon(layout_3d->get<Track3D>(**i));
 621 }
 622
 623 void Designer::route_name_accept(const string &text)
 624 {
 625         if(cur_route)
 626                 cur_route->set_name(text);
 627 }
 628
 629 void Designer::svg_export_accept(const string &text)
 630 {
 631         SvgExporter svg_exp(*layout);
 632         svg_exp.save(text);
 633 }
 634
 635 string Designer::tooltip(int x, int y)
 636 {
 637         const GLtk::Geometry &rgeom = root.get_geometry();
 638         if(Object *obj = pick_object(Vector(x*2.0f/rgeom.w-1.0f, y*2.0f/rgeom.h-1.0f, 0)))
 639         {
 640                 const ObjectType &otype = obj->get_type();
 641                 string info = format("%d %s", otype.get_article_number(), otype.get_description());
 642                 if(Track *track = dynamic_cast<Track *>(obj))
 643                 {
 644                         if(mode!=CATALOGUE && abs(track->get_tilt()).radians()>1e-4)
 645                                 info += format(" (slope %.1f%%)", abs(tan(track->get_tilt())*100));
 646                         if(track->get_turnout_id())
 647                                 info += format(" (turnout %d)", track->get_turnout_id());
 648                         else if(track->get_sensor_id())
 649                                 info += format(" (sensor %d)", track->get_sensor_id());
 650                 }
 651                 return info;
 652         }
 653
 654         return string();
 655 }
 656
 657 void Designer::clear_paths()
 658 {
 659         const set<Track *> &ltracks = layout->get_all<Track>();
 660         for(set<Track *>::iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 661         {
 662                 Track3D &t3d = layout_3d->get<Track3D>(**i);
 663                 t3d.get_path().set_mask(0);
 664         }
 665 }
 666
 667 void Designer::show_route(const Route &route)
 668 {
 669         clear_paths();
 670
 671         const set<Track *> &rtracks = route.get_tracks();
 672         for(set<Track *>::iterator i=rtracks.begin(); i!=rtracks.end(); ++i)
 673         {
 674                 Track3D &t3d = layout_3d->get<Track3D>(**i);
 675                 t3d.get_path().set_color(GL::Color(0.5, 0.8, 1.0));
 676                 int path = -1;
 677                 if(unsigned tid = (*i)->get_turnout_id())
 678                         path = route.get_turnout(tid);
 679                 if(path>=0)
 680                         t3d.get_path().set_path(path);
 681                 else
 682                         t3d.get_path().set_mask((*i)->get_type().get_paths());
 683         }
 684 }
 685
 686 void Designer::show_zone(const Zone &zone)
 687 {
 688         clear_paths();
 689
 690         const Zone::TrackSet &ztracks = zone.get_tracks();
 691         for(Zone::TrackSet::const_iterator i=ztracks.begin(); i!=ztracks.end(); ++i)
 692         {
 693                 Track3D &t3d = layout_3d->get<Track3D>(**i);
 694                 t3d.get_path().set_color(GL::Color(0.8, 1.0, 0.5));
 695                 t3d.get_path().set_mask((*i)->get_type().get_paths());
 696         }
 697 }