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/projection.h>
  10 #include <msp/gl/tests.h>
  11 #include <msp/gl/texture2d.h>
  12 #include <msp/input/keys.h>
  13 #include <msp/io/print.h>
  14 #include <msp/strings/codec.h>
  15 #include <msp/strings/lexicalcast.h>
  16 #include <msp/strings/utf8.h>
  17 #include <msp/strings/utils.h>
  18 #include <msp/time/units.h>
  19 #include <msp/time/utils.h>
  20 #include "libr2c2/route.h"
  21 #include "libr2c2/tracktype.h"
  22 #include "libr2c2/zone.h"
  23 #include "3d/path.h"
  24 #include "designer.h"
  25 #include "input.h"
  26 #include "layoutbar.h"
  27 #include "manipulator.h"
  28 #include "measure.h"
  29 #include "routebar.h"
  30 #include "selection.h"
  31 #include "svgexporter.h"
  32 #include "trackbar.h"
  33 #include "trackproperties.h"
  34 #include "zonebar.h"
  35 #include "zoneproperties.h"
  36
  37 using namespace std;
  38 using namespace R2C2;
  39 using namespace Msp;
  40
  41 Application::RegApp<Designer> Designer::reg;
  42
  43 Designer::Designer(int argc, char **argv):
  44         window(1280, 960),
  45         ui_res("r2c2.res"),
  46         root(ui_res, window),
  47         base_object(0),
  48         cur_route(0),
  49         cur_zone(0),
  50         mode(SELECT),
  51         manipulator(*this, root, 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_track_added.connect(sigc::mem_fun(this, &Designer::track_added));
  72         layout->signal_track_removed.connect(sigc::mem_fun(this, &Designer::track_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::PipelinePass *pass = &pipeline->add_pass("unlit");
  93         pass->depth_test = &GL::DepthTest::lequal();
  94         pass->blend = &GL::Blend::alpha();
  95
  96         pass = &pipeline->add_pass("blended");
  97         pass->lighting = &layout_3d->get_lighting();
  98         pass->depth_test = &GL::DepthTest::lequal();
  99         pass->blend = &GL::Blend::alpha();
 100
 101         pass = &pipeline->add_pass("overlay");
 102         pass->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         root.signal_key_press.connect(sigc::mem_fun(this, &Designer::key_press));
 111         root.signal_button_press.connect(sigc::mem_fun(this, &Designer::button_press));
 112         root.signal_pointer_motion.connect(sigc::mem_fun(this, &Designer::pointer_motion));
 113         root.signal_tooltip.connect(sigc::mem_fun(this, &Designer::tooltip));
 114
 115         toolbars.push_back(new Layoutbar(*this));
 116         toolbars.push_back(new Trackbar(*this));
 117         toolbars.push_back(new Routebar(*this));
 118         toolbars.push_back(new Zonebar(*this));
 119         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 120         {
 121                 root.add(**i);
 122                 if(i!=toolbars.begin())
 123                         (*i)->expand(false);
 124                 (*i)->signal_expanded.connect(sigc::hide(sigc::mem_fun(this, &Designer::arrange_toolbars)));
 125         }
 126         arrange_toolbars();
 127
 128         GLtk::Panel *statusbar = new GLtk::Panel;
 129         root.add(*statusbar);
 130         statusbar->set_size(window.get_width(), 20);
 131         statusbar->set_focusable(false);
 132
 133         lbl_status = new GLtk::Label;
 134         statusbar->add(*lbl_status);
 135         lbl_status->set_geometry(GLtk::Geometry(20, 2, 300, 16));
 136
 137         track_wrap = new TrackWrap(*layout_3d, selection);
 138         pipeline->add_renderable_for_pass(*track_wrap, "unlit");
 139         overlay = new Overlay3D(ui_res.get_default_font());
 140         pipeline->add_renderable_for_pass(*overlay, "overlay");
 141
 142         camera_ctl = new CameraController(*main_view, root);
 143         cat_view->get_camera().set_look_direction(GL::Vector3(0, 0.13053, -0.99144));
 144         cat_view->view_all(true);
 145         main_view->view_all();
 146
 147         const Layout3D::TrackMap &tracks = layout_3d->get_tracks();
 148         for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 149                 update_track_icon(*i->second);
 150 }
 151
 152 Designer::~Designer()
 153 {
 154         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 155                 delete *i;
 156         delete camera_ctl;
 157         delete track_wrap;
 158         delete overlay;
 159         delete main_view;
 160         delete base_object;
 161         delete layout_3d;
 162         delete layout;
 163         delete cat_view;
 164         delete cat_layout_3d;
 165 }
 166
 167 int Designer::main()
 168 {
 169         window.show();
 170
 171         mode = SELECT;
 172
 173         return Application::main();
 174 }
 175
 176 void Designer::save()
 177 {
 178         InputDialog *input = new InputDialog(*this, "Save layout", filename);
 179         input->signal_accept.connect(sigc::mem_fun(layout, &Layout::save));
 180 }
 181
 182 void Designer::quit()
 183 {
 184         exit(0);
 185 }
 186
 187 void Designer::new_track()
 188 {
 189         if(mode!=SELECT)
 190                 return;
 191
 192         mode = CATALOGUE;
 193         lbl_status->set_text("Select new track or press Esc to cancel");
 194 }
 195
 196 void Designer::erase_tracks()
 197 {
 198         if(mode!=SELECT)
 199                 return;
 200
 201         set<Track *> tracks = selection.get_tracks();
 202         selection.clear();
 203         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 204         {
 205                 overlay->clear(layout_3d->get_track(**i));
 206                 delete *i;
 207         }
 208 }
 209
 210 void Designer::track_properties()
 211 {
 212         if(mode!=SELECT || selection.empty())
 213                 return;
 214
 215         TrackProperties *track_prop = new TrackProperties(selection);
 216         root.add(*track_prop);
 217         const GLtk::Geometry &root_geom = root.get_geometry();
 218         const GLtk::Geometry &dlg_geom = track_prop->get_geometry();
 219         track_prop->set_position((root_geom.w-dlg_geom.w)/2, (root_geom.h-dlg_geom.h)/2);
 220
 221         track_prop->signal_response.connect(sigc::mem_fun(this, &Designer::track_properties_response));
 222 }
 223
 224 void Designer::extend_track()
 225 {
 226         if(mode!=SELECT)
 227                 return;
 228
 229         if(manipulator.start_extend())
 230                 mode = MANIPULATE;
 231 }
 232
 233 void Designer::connect_tracks()
 234 {
 235         if(mode!=SELECT)
 236                 return;
 237
 238         manipulator.connect();
 239 }
 240
 241 void Designer::flatten_tracks()
 242 {
 243         if(mode!=SELECT)
 244                 return;
 245
 246         manipulator.flatten();
 247 }
 248
 249 void Designer::svg_export()
 250 {
 251         InputDialog *input = new InputDialog(*this, "SVG export", FS::basepart(filename)+".svg");
 252         input->signal_accept.connect(sigc::mem_fun(this, &Designer::svg_export_accept));
 253 }
 254
 255 void Designer::edit_route(Route *r)
 256 {
 257         cur_route = r;
 258         cur_zone = 0;
 259         if(cur_route)
 260                 show_route(*cur_route);
 261         else
 262                 clear_paths();
 263 }
 264
 265 void Designer::rename_route()
 266 {
 267         if(mode!=SELECT || !cur_route)
 268                 return;
 269
 270         InputDialog *input = new InputDialog(*this, "Route name", cur_route->get_name());
 271         input->signal_accept.connect(sigc::mem_fun(this, &Designer::route_name_accept));
 272 }
 273
 274 void Designer::add_selection_to_route()
 275 {
 276         if(!cur_route)
 277                 return;
 278
 279         try
 280         {
 281                 cur_route->add_tracks(selection.get_tracks());
 282         }
 283         catch(const Exception &e)
 284         {
 285                 lbl_status->set_text(e.what());
 286         }
 287
 288         show_route(*cur_route);
 289 }
 290
 291 void Designer::edit_zone(Zone *z)
 292 {
 293         cur_zone = z;
 294         cur_route = 0;
 295         if(cur_zone)
 296                 show_zone(*cur_zone);
 297         else
 298                 clear_paths();
 299 }
 300
 301 void Designer::zone_properties()
 302 {
 303         if(!cur_zone)
 304                 return;
 305
 306         ZoneProperties *zone_prop = new ZoneProperties(*cur_zone);
 307         root.add(*zone_prop);
 308         const GLtk::Geometry &root_geom = root.get_geometry();
 309         const GLtk::Geometry &dlg_geom = zone_prop->get_geometry();
 310         zone_prop->set_position((root_geom.w-dlg_geom.w)/2, (root_geom.h-dlg_geom.h)/2);
 311 }
 312
 313 void Designer::add_selection_to_zone()
 314 {
 315         if(!cur_zone)
 316                 return;
 317
 318         try
 319         {
 320                 cur_zone->add_tracks(selection.get_tracks());
 321         }
 322         catch(const Exception &e)
 323         {
 324                 lbl_status->set_text(e.what());
 325         }
 326
 327         show_zone(*cur_zone);
 328 }
 329
 330 Vector Designer::map_pointer_to_ground(int x, int y)
 331 {
 332         float xf = x*2.0/window.get_width()-1.0;
 333         float yf = y*2.0/window.get_height()-1.0;
 334         GL::Vector4 vec = main_view->get_camera().unproject(GL::Vector4(xf, yf, 0, 0));
 335         const GL::Vector3 &pos = main_view->get_camera().get_position();
 336
 337         return Vector(pos.x-vec.x*pos.z/vec.z, pos.y-vec.y*pos.z/vec.z);
 338 }
 339
 340 void Designer::tick()
 341 {
 342         const Msp::Time::TimeStamp t = Msp::Time::now();
 343         float dt = (t-last_tick)/Msp::Time::sec;
 344         last_tick = t;
 345
 346         if(mode==MANIPULATE_DONE)
 347                 mode = SELECT;
 348
 349         window.tick();
 350         root.tick();
 351         camera_ctl->tick(dt);
 352
 353         for(list<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
 354                 layout_3d->get_track(**i).get_path().set_mask(0);
 355         new_tracks.clear();
 356
 357         render();
 358
 359         window.swap_buffers();
 360 }
 361
 362 void Designer::key_press(unsigned key, unsigned mod, wchar_t)
 363 {
 364         key = Input::key_from_sys(key);
 365         mod = Input::mod_from_sys(mod);
 366
 367         if(key==Msp::Input::KEY_N && (mod&Input::MOD_SHIFT))
 368                 extend_track();
 369         else if(key==Msp::Input::KEY_N)
 370                 new_track();
 371         else if(key==Msp::Input::KEY_G)
 372         {
 373                 manipulator.start_move();
 374                 mode = MANIPULATE;
 375         }
 376         else if(key==Msp::Input::KEY_R)
 377         {
 378                 manipulator.start_rotate();
 379                 mode = MANIPULATE;
 380         }
 381         else if(key==Msp::Input::KEY_D)
 382         {
 383                 manipulator.duplicate();
 384                 manipulator.start_move();
 385                 mode = MANIPULATE;
 386         }
 387         else if(key==Msp::Input::KEY_W)
 388                 save();
 389         else if(key==Msp::Input::KEY_PLUS)
 390                 selection.select_more();
 391         else if(key==Msp::Input::KEY_L && (mod&Input::MOD_SHIFT))
 392                 selection.select_blocks();
 393         else if(key==Msp::Input::KEY_L)
 394                 selection.select_linked();
 395         else if(key==Msp::Input::KEY_M)
 396         {
 397                 measure.start();
 398                 mode = MEASURE;
 399         }
 400         else if(key==Msp::Input::KEY_Z)
 401         {
 402                 manipulator.start_elevate();
 403                 mode = MANIPULATE;
 404         }
 405         else if(key==Msp::Input::KEY_ESC)
 406         {
 407                 if(mode==MANIPULATE)
 408                         manipulator.cancel();
 409                 else if(mode==CATALOGUE)
 410                         mode = SELECT;
 411                 else
 412                         selection.clear();
 413         }
 414         else if(key==Msp::Input::KEY_X)
 415                 erase_tracks();
 416         else if(key==Msp::Input::KEY_F && (mod&Input::MOD_SHIFT))
 417         {
 418                 const set<Track *> &tracks = selection.get_tracks();
 419                 const set<Track *> &ltracks = layout->get_tracks();
 420                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 421                 {
 422                         (*i)->set_flex(!(*i)->get_flex());
 423                         (*i)->break_links();
 424                         for(set<Track *>::const_iterator j=ltracks.begin(); j!=ltracks.end(); ++j)
 425                                 if(*j!=*i)
 426                                         (*i)->snap_to(**j, true);
 427
 428                         update_track_icon(layout_3d->get_track(**i));
 429                 }
 430         }
 431         else if(key==Msp::Input::KEY_F)
 432                 flatten_tracks();
 433         else if(key==Msp::Input::KEY_E && (mod&Input::MOD_SHIFT))
 434                 manipulator.even_slope(true);
 435         else if(key==Msp::Input::KEY_E)
 436                 manipulator.even_slope();
 437         else if(key==Msp::Input::KEY_A)
 438         {
 439                 if(cur_route)
 440                         add_selection_to_route();
 441                 else if(cur_zone)
 442                         add_selection_to_zone();
 443         }
 444         else if(key==Msp::Input::KEY_C)
 445                 connect_tracks();
 446         else if(key==Msp::Input::KEY_V)
 447                 svg_export();
 448         else if(key==Msp::Input::KEY_P)
 449                 track_properties();
 450 }
 451
 452 void Designer::button_press(int x, int y, unsigned btn, unsigned mod)
 453 {
 454         y = window.get_height()-y-1;
 455         mod = Input::mod_from_sys(mod);
 456
 457         Vector ground = map_pointer_to_ground(x, y);
 458
 459         if(mode==CATALOGUE)
 460         {
 461                 if(btn==1)
 462                 {
 463                         Track *ctrack = pick_track(x, y);
 464                         if(ctrack)
 465                         {
 466                                 Track *track = new Track(*layout, ctrack->get_type());
 467                                 track->set_position(ground);
 468
 469                                 selection.clear();
 470                                 selection.add_track(track);
 471
 472                                 mode = SELECT;
 473                         }
 474                 }
 475                 else
 476                         mode = SELECT;
 477         }
 478         else if(mode==SELECT)
 479         {
 480                 if(btn==1)
 481                 {
 482                         Track *track = pick_track(x, y);
 483                         if(track)
 484                         {
 485                                 if(!(mod&Input::MOD_SHIFT))
 486                                         selection.clear();
 487                                 selection.toggle_track(track);
 488                         }
 489                 }
 490         }
 491         else if(mode==MEASURE)
 492                 measure.button_press(x, y, ground.x, ground.y, btn);
 493 }
 494
 495 void Designer::pointer_motion(int x, int y)
 496 {
 497         y = window.get_height()-y-1;
 498
 499         if(!root.get_child_at(x, y))
 500         {
 501                 Vector ground = map_pointer_to_ground(x, y);
 502                 measure.pointer_motion(x, y, ground.x, ground.y);
 503         }
 504 }
 505
 506 void Designer::render()
 507 {
 508         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 509
 510         View3D *view = (mode==CATALOGUE ? cat_view : main_view);
 511         view->render();
 512         if(mode==MEASURE)
 513         {
 514                 GL::Bind bind_depth(GL::DepthTest::lequal());
 515                 measure.render();
 516         }
 517
 518         GL::matrix_mode(GL::PROJECTION);
 519         GL::load_identity();
 520         GL::ortho_bottomleft(window.get_width(), window.get_height());
 521         GL::matrix_mode(GL::MODELVIEW);
 522         GL::load_identity();
 523
 524         GL::Bind bind_blend(GL::Blend::alpha());
 525         root.render();
 526         // XXX Should fix GLtk so these would not be needed
 527         GL::Texture::unbind();
 528         glColor3f(1.0, 1.0, 1.0);
 529 }
 530
 531 void Designer::track_added(Track &trk)
 532 {
 533         new_tracks.push_back(&trk);
 534 }
 535
 536 void Designer::track_removed(Track &trk)
 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 Track *Designer::pick_track(int x, int y)
 544 {
 545         float xx = x*2.0/window.get_width()-1.0;
 546         float yy = y*2.0/window.get_height()-1.0;
 547
 548         View3D &view = *(mode==CATALOGUE ? cat_view : main_view);
 549         const GL::Vector3 &cpos = view.get_camera().get_position();
 550         GL::Vector4 cray = view.get_camera().unproject(GL::Vector4(xx, yy, 0, 0));
 551
 552         return view.get_layout().get_layout().pick_track(Vector(cpos.x, cpos.y, cpos.z), Vector(cray.x, cray.y, cray.z));
 553 }
 554
 555 void Designer::update_track_icon(Track3D &track)
 556 {
 557         overlay->clear(track);
 558
 559         if(track.get_track().get_flex())
 560                 overlay->add_graphic(track, "flex");
 561
 562         if(unsigned sid = track.get_track().get_sensor_id())
 563         {
 564                 overlay->add_graphic(track, "sensor");
 565                 overlay->set_label(track, lexical_cast(sid));
 566         }
 567         else if(unsigned tid = track.get_track().get_turnout_id())
 568         {
 569                 if(tid<0x800)
 570                 {
 571                         overlay->add_graphic(track, "turnout");
 572                         overlay->set_label(track, lexical_cast(tid));
 573                 }
 574         }
 575 }
 576
 577 void Designer::selection_changed()
 578 {
 579         const set<Track *> &tracks = selection.get_tracks();
 580         if(tracks.empty())
 581                 lbl_status->set_text(string());
 582         else
 583         {
 584                 float len = 0;
 585                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 586                         len += (*i)->get_type().get_total_length();
 587                 lbl_status->set_text(format("%.2fm of track selected\n", len));
 588         }
 589 }
 590
 591 void Designer::manipulation_status(const string &status)
 592 {
 593         lbl_status->set_text(status);
 594 }
 595
 596 void Designer::manipulation_done(bool)
 597 {
 598         mode = MANIPULATE_DONE;
 599         selection_changed();
 600 }
 601
 602 void Designer::measure_changed()
 603 {
 604         float pard = measure.get_parallel_distance()*1000;
 605         float perpd = measure.get_perpendicular_distance()*1000;
 606         float d = sqrt(pard*pard+perpd*perpd);
 607         float adiff = measure.get_angle_difference()*180/M_PI;
 608         string info = format("Par %.1fmm - Perp %.1fmm - Total %.1fmm - Angle %.1f°", pard, perpd, d, adiff);
 609         lbl_status->set_text(info);
 610 }
 611
 612 void Designer::measure_done()
 613 {
 614         mode = SELECT;
 615         selection_changed();
 616 }
 617
 618 void Designer::arrange_toolbars()
 619 {
 620         unsigned x = 0;
 621         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 622         {
 623                 const GLtk::Geometry &geom = (*i)->get_geometry();
 624                 (*i)->set_position(x, window.get_height()-geom.h);
 625                 x += geom.w;
 626         }
 627 }
 628
 629 void Designer::track_properties_response(int)
 630 {
 631         const set<Track *> &tracks = selection.get_tracks();
 632         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 633                 update_track_icon(layout_3d->get_track(**i));
 634 }
 635
 636 void Designer::route_name_accept(const string &text)
 637 {
 638         if(cur_route)
 639                 cur_route->set_name(text);
 640 }
 641
 642 void Designer::svg_export_accept(const string &text)
 643 {
 644         SvgExporter svg_exp(*layout);
 645         svg_exp.save(text);
 646 }
 647
 648 string Designer::tooltip(int x, int y)
 649 {
 650         if(Track *track = pick_track(x, y))
 651         {
 652                 const TrackType &ttype = track->get_type();
 653                 string info = format("%d %s", ttype.get_article_number(), ttype.get_description());
 654                 if(mode!=CATALOGUE && abs(track->get_slope())>1e-4)
 655                         info += format(" (slope %.1f%%)", abs(track->get_slope()/ttype.get_total_length()*100));
 656                 if(track->get_turnout_id())
 657                         info += format(" (turnout %d)", track->get_turnout_id());
 658                 else if(track->get_sensor_id())
 659                         info += format(" (sensor %d)", track->get_sensor_id());
 660
 661                 return info;
 662         }
 663
 664         return string();
 665 }
 666
 667 void Designer::clear_paths()
 668 {
 669         const set<Track *> &ltracks = layout->get_tracks();
 670         for(set<Track *>::iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 671         {
 672                 Track3D &t3d = layout_3d->get_track(**i);
 673                 t3d.get_path().set_mask(0);
 674         }
 675 }
 676
 677 void Designer::show_route(const Route &route)
 678 {
 679         clear_paths();
 680
 681         const set<Track *> &rtracks = route.get_tracks();
 682         for(set<Track *>::iterator i=rtracks.begin(); i!=rtracks.end(); ++i)
 683         {
 684                 Track3D &t3d = layout_3d->get_track(**i);
 685                 t3d.get_path().set_color(GL::Color(0.5, 0.8, 1.0));
 686                 int path = -1;
 687                 if(unsigned tid = (*i)->get_turnout_id())
 688                         path = route.get_turnout(tid);
 689                 if(path>=0)
 690                         t3d.get_path().set_path(path);
 691                 else
 692                         t3d.get_path().set_mask((*i)->get_type().get_paths());
 693         }
 694 }
 695
 696 void Designer::show_zone(const Zone &zone)
 697 {
 698         clear_paths();
 699
 700         const Zone::TrackSet &ztracks = zone.get_tracks();
 701         for(Zone::TrackSet::const_iterator i=ztracks.begin(); i!=ztracks.end(); ++i)
 702         {
 703                 Track3D &t3d = layout_3d->get_track(**i);
 704                 t3d.get_path().set_color(GL::Color(0.8, 1.0, 0.5));
 705                 t3d.get_path().set_mask((*i)->get_type().get_paths());
 706         }
 707 }