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/stringcodec/codec.h>
  15 #include <msp/stringcodec/utf8.h>
  16 #include <msp/strings/lexicalcast.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 Designer::Designer(int argc, char **argv):
  42         window(1280, 960),
  43         ui_res("r2c2.res"),
  44         root(ui_res, window),
  45         base_object(0),
  46         cur_route(0),
  47         cur_zone(0),
  48         mode(SELECT),
  49         manipulator(*this, root, selection),
  50         measure(*this)
  51 {
  52         window.set_title("Railway Designer");
  53         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &Designer::exit), 0));
  54
  55         selection.signal_changed.connect(sigc::mem_fun(this, &Designer::selection_changed));
  56         manipulator.signal_status.connect(sigc::mem_fun(this, &Designer::manipulation_status));
  57         manipulator.signal_done.connect(sigc::mem_fun(this, &Designer::manipulation_done));
  58         measure.signal_changed.connect(sigc::mem_fun(this, &Designer::measure_changed));
  59         measure.signal_done.connect(sigc::mem_fun(this, &Designer::measure_done));
  60
  61         // Setup catalogue and layout
  62         DataFile::load(catalogue, "tracks.dat");
  63
  64         cat_layout_3d = new Layout3D(catalogue.get_layout());
  65
  66         layout = new Layout(catalogue);
  67         layout_3d = new Layout3D(*layout);
  68
  69         layout->signal_track_added.connect(sigc::mem_fun(this, &Designer::track_added));
  70         layout->signal_track_removed.connect(sigc::mem_fun(this, &Designer::track_removed));
  71
  72         if(argc>1)
  73         {
  74                 filename = argv[1];
  75                 DataFile::load(*layout, argv[1]);
  76
  77                 if(!layout->get_base().empty())
  78                 {
  79                         base_object = new GL::Object;
  80                         DataFile::load(*base_object, layout->get_base());
  81                 }
  82         }
  83
  84         // Setup OpenGL
  85         cat_view = new View3D(*cat_layout_3d, window.get_width(), window.get_height());
  86
  87         main_view = new View3D(*layout_3d, window.get_width(), window.get_height());
  88         GL::Pipeline *pipeline = &main_view->get_pipeline();
  89
  90         GL::Pipeline::Pass *pass = &pipeline->add_pass("unlit");
  91         pass->set_depth_test(&GL::DepthTest::lequal());
  92         pass->set_blend(&GL::Blend::alpha());
  93
  94         pass = &pipeline->add_pass("blended");
  95         pass->set_lighting(&layout_3d->get_lighting());
  96         pass->set_depth_test(&GL::DepthTest::lequal());
  97         pass->set_blend(&GL::Blend::alpha());
  98
  99         pass = &pipeline->add_pass("overlay");
 100         pass->set_blend(&GL::Blend::alpha());
 101
 102         if(base_object)
 103                 pipeline->add_renderable(*base_object);
 104         pipeline->add_renderable_for_pass(layout_3d->get_path_scene(), "unlit");
 105         pipeline->add_renderable_for_pass(layout_3d->get_endpoint_scene(), "unlit");
 106
 107         // Setup UI
 108         root.signal_key_press.connect(sigc::mem_fun(this, &Designer::key_press));
 109         root.signal_button_press.connect(sigc::mem_fun(this, &Designer::button_press));
 110         root.signal_pointer_motion.connect(sigc::mem_fun(this, &Designer::pointer_motion));
 111         root.signal_tooltip.connect(sigc::mem_fun(this, &Designer::tooltip));
 112
 113         toolbars.push_back(new Layoutbar(*this));
 114         toolbars.push_back(new Trackbar(*this));
 115         toolbars.push_back(new Routebar(*this));
 116         toolbars.push_back(new Zonebar(*this));
 117         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 118         {
 119                 root.add(**i);
 120                 if(i!=toolbars.begin())
 121                         (*i)->expand(false);
 122                 (*i)->signal_expanded.connect(sigc::hide(sigc::mem_fun(this, &Designer::arrange_toolbars)));
 123         }
 124         arrange_toolbars();
 125
 126         GLtk::Panel *statusbar = new GLtk::Panel;
 127         root.add(*statusbar);
 128         statusbar->set_size(window.get_width(), 20);
 129         statusbar->set_focusable(false);
 130
 131         lbl_status = new GLtk::Label;
 132         statusbar->add(*lbl_status);
 133         lbl_status->set_geometry(GLtk::Geometry(20, 2, 300, 16));
 134
 135         track_wrap = new TrackWrap(*layout_3d, selection);
 136         pipeline->add_renderable_for_pass(*track_wrap, "unlit");
 137         overlay = new Overlay3D(ui_res.get_default_font());
 138         pipeline->add_renderable_for_pass(*overlay, "overlay");
 139
 140         camera_ctl = new CameraController(*main_view, root);
 141         cat_view->get_camera().set_look_direction(GL::Vector3(0, 0.13053, -0.99144));
 142         cat_view->view_all(true);
 143         main_view->view_all();
 144
 145         const Layout3D::TrackMap &tracks = layout_3d->get_tracks();
 146         for(Layout3D::TrackMap::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 147                 update_track_icon(*i->second);
 148 }
 149
 150 Designer::~Designer()
 151 {
 152         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 153                 delete *i;
 154         delete camera_ctl;
 155         delete track_wrap;
 156         delete overlay;
 157         delete main_view;
 158         delete base_object;
 159         delete layout_3d;
 160         delete layout;
 161         delete cat_view;
 162         delete cat_layout_3d;
 163 }
 164
 165 int Designer::main()
 166 {
 167         window.show();
 168
 169         mode = SELECT;
 170
 171         return Application::main();
 172 }
 173
 174 void Designer::save()
 175 {
 176         InputDialog *input = new InputDialog(*this, "Save layout", filename);
 177         input->signal_accept.connect(sigc::mem_fun(layout, &Layout::save));
 178 }
 179
 180 void Designer::quit()
 181 {
 182         exit(0);
 183 }
 184
 185 void Designer::new_track()
 186 {
 187         if(mode!=SELECT)
 188                 return;
 189
 190         mode = CATALOGUE;
 191         lbl_status->set_text("Select new track or press Esc to cancel");
 192 }
 193
 194 void Designer::erase_tracks()
 195 {
 196         if(mode!=SELECT)
 197                 return;
 198
 199         set<Track *> tracks = selection.get_tracks();
 200         selection.clear();
 201         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 202         {
 203                 overlay->clear(layout_3d->get_track(**i));
 204                 delete *i;
 205         }
 206 }
 207
 208 void Designer::track_properties()
 209 {
 210         if(mode!=SELECT || selection.empty())
 211                 return;
 212
 213         TrackProperties *track_prop = new TrackProperties(selection);
 214         root.add(*track_prop);
 215         const GLtk::Geometry &root_geom = root.get_geometry();
 216         const GLtk::Geometry &dlg_geom = track_prop->get_geometry();
 217         track_prop->set_position((root_geom.w-dlg_geom.w)/2, (root_geom.h-dlg_geom.h)/2);
 218
 219         track_prop->signal_response.connect(sigc::mem_fun(this, &Designer::track_properties_response));
 220 }
 221
 222 void Designer::extend_track()
 223 {
 224         if(mode!=SELECT)
 225                 return;
 226
 227         if(manipulator.start_extend())
 228                 mode = MANIPULATE;
 229 }
 230
 231 void Designer::connect_tracks()
 232 {
 233         if(mode!=SELECT)
 234                 return;
 235
 236         manipulator.connect();
 237 }
 238
 239 void Designer::flatten_tracks()
 240 {
 241         if(mode!=SELECT)
 242                 return;
 243
 244         manipulator.flatten();
 245 }
 246
 247 void Designer::svg_export()
 248 {
 249         InputDialog *input = new InputDialog(*this, "SVG export", FS::basepart(filename)+".svg");
 250         input->signal_accept.connect(sigc::mem_fun(this, &Designer::svg_export_accept));
 251 }
 252
 253 void Designer::edit_route(Route *r)
 254 {
 255         cur_route = r;
 256         cur_zone = 0;
 257         if(cur_route)
 258                 show_route(*cur_route);
 259         else
 260                 clear_paths();
 261 }
 262
 263 void Designer::rename_route()
 264 {
 265         if(mode!=SELECT || !cur_route)
 266                 return;
 267
 268         InputDialog *input = new InputDialog(*this, "Route name", cur_route->get_name());
 269         input->signal_accept.connect(sigc::mem_fun(this, &Designer::route_name_accept));
 270 }
 271
 272 void Designer::add_selection_to_route()
 273 {
 274         if(!cur_route)
 275                 return;
 276
 277         try
 278         {
 279                 cur_route->add_tracks(selection.get_tracks());
 280         }
 281         catch(const exception &e)
 282         {
 283                 lbl_status->set_text(e.what());
 284         }
 285
 286         show_route(*cur_route);
 287 }
 288
 289 void Designer::edit_zone(Zone *z)
 290 {
 291         cur_zone = z;
 292         cur_route = 0;
 293         if(cur_zone)
 294                 show_zone(*cur_zone);
 295         else
 296                 clear_paths();
 297 }
 298
 299 void Designer::zone_properties()
 300 {
 301         if(!cur_zone)
 302                 return;
 303
 304         ZoneProperties *zone_prop = new ZoneProperties(*cur_zone);
 305         root.add(*zone_prop);
 306         const GLtk::Geometry &root_geom = root.get_geometry();
 307         const GLtk::Geometry &dlg_geom = zone_prop->get_geometry();
 308         zone_prop->set_position((root_geom.w-dlg_geom.w)/2, (root_geom.h-dlg_geom.h)/2);
 309 }
 310
 311 void Designer::add_selection_to_zone()
 312 {
 313         if(!cur_zone)
 314                 return;
 315
 316         try
 317         {
 318                 cur_zone->add_tracks(selection.get_tracks());
 319         }
 320         catch(const exception &e)
 321         {
 322                 lbl_status->set_text(e.what());
 323         }
 324
 325         show_zone(*cur_zone);
 326 }
 327
 328 Vector Designer::map_pointer_to_ground(int x, int y)
 329 {
 330         float xf = x*2.0/window.get_width()-1.0;
 331         float yf = y*2.0/window.get_height()-1.0;
 332         GL::Vector4 vec = main_view->get_camera().unproject(GL::Vector4(xf, yf, 0, 0));
 333         const GL::Vector3 &pos = main_view->get_camera().get_position();
 334
 335         return Vector(pos.x-vec.x*pos.z/vec.z, pos.y-vec.y*pos.z/vec.z);
 336 }
 337
 338 void Designer::tick()
 339 {
 340         const Msp::Time::TimeStamp t = Msp::Time::now();
 341         float dt = (t-last_tick)/Msp::Time::sec;
 342         last_tick = t;
 343
 344         if(mode==MANIPULATE_DONE)
 345                 mode = SELECT;
 346
 347         window.tick();
 348         root.tick();
 349         camera_ctl->tick(dt);
 350
 351         for(list<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
 352                 layout_3d->get_track(**i).get_path().set_mask(0);
 353         new_tracks.clear();
 354
 355         render();
 356
 357         window.swap_buffers();
 358 }
 359
 360 void Designer::key_press(unsigned key, unsigned mod, wchar_t)
 361 {
 362         key = Input::key_from_sys(key);
 363         mod = Input::mod_from_sys(mod);
 364
 365         if(key==Msp::Input::KEY_N && (mod&Input::MOD_SHIFT))
 366                 extend_track();
 367         else if(key==Msp::Input::KEY_N)
 368                 new_track();
 369         else if(key==Msp::Input::KEY_G)
 370         {
 371                 manipulator.start_move();
 372                 mode = MANIPULATE;
 373         }
 374         else if(key==Msp::Input::KEY_R)
 375         {
 376                 manipulator.start_rotate();
 377                 mode = MANIPULATE;
 378         }
 379         else if(key==Msp::Input::KEY_D)
 380         {
 381                 manipulator.duplicate();
 382                 manipulator.start_move();
 383                 mode = MANIPULATE;
 384         }
 385         else if(key==Msp::Input::KEY_W)
 386                 save();
 387         else if(key==Msp::Input::KEY_PLUS)
 388                 selection.select_more();
 389         else if(key==Msp::Input::KEY_L && (mod&Input::MOD_SHIFT))
 390                 selection.select_blocks();
 391         else if(key==Msp::Input::KEY_L)
 392                 selection.select_linked();
 393         else if(key==Msp::Input::KEY_M)
 394         {
 395                 measure.start();
 396                 mode = MEASURE;
 397         }
 398         else if(key==Msp::Input::KEY_Z)
 399         {
 400                 manipulator.start_elevate();
 401                 mode = MANIPULATE;
 402         }
 403         else if(key==Msp::Input::KEY_ESC)
 404         {
 405                 if(mode==MANIPULATE)
 406                         manipulator.cancel();
 407                 else if(mode==CATALOGUE)
 408                         mode = SELECT;
 409                 else
 410                         selection.clear();
 411         }
 412         else if(key==Msp::Input::KEY_X)
 413                 erase_tracks();
 414         else if(key==Msp::Input::KEY_F && (mod&Input::MOD_SHIFT))
 415         {
 416                 const set<Track *> &tracks = selection.get_tracks();
 417                 const set<Track *> &ltracks = layout->get_tracks();
 418                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 419                 {
 420                         (*i)->set_flex(!(*i)->get_flex());
 421                         (*i)->break_links();
 422                         for(set<Track *>::const_iterator j=ltracks.begin(); j!=ltracks.end(); ++j)
 423                                 if(*j!=*i)
 424                                         (*i)->snap_to(**j, true);
 425
 426                         update_track_icon(layout_3d->get_track(**i));
 427                 }
 428         }
 429         else if(key==Msp::Input::KEY_F)
 430                 flatten_tracks();
 431         else if(key==Msp::Input::KEY_E && (mod&Input::MOD_SHIFT))
 432                 manipulator.even_slope(true);
 433         else if(key==Msp::Input::KEY_E)
 434                 manipulator.even_slope();
 435         else if(key==Msp::Input::KEY_A)
 436         {
 437                 if(cur_route)
 438                         add_selection_to_route();
 439                 else if(cur_zone)
 440                         add_selection_to_zone();
 441         }
 442         else if(key==Msp::Input::KEY_C)
 443                 connect_tracks();
 444         else if(key==Msp::Input::KEY_V)
 445                 svg_export();
 446         else if(key==Msp::Input::KEY_P)
 447                 track_properties();
 448 }
 449
 450 void Designer::button_press(int x, int y, unsigned btn, unsigned mod)
 451 {
 452         y = window.get_height()-y-1;
 453         mod = Input::mod_from_sys(mod);
 454
 455         Vector ground = map_pointer_to_ground(x, y);
 456
 457         if(mode==CATALOGUE)
 458         {
 459                 if(btn==1)
 460                 {
 461                         Track *ctrack = pick_track(x, y);
 462                         if(ctrack)
 463                         {
 464                                 Track *track = new Track(*layout, ctrack->get_type());
 465                                 track->set_position(ground);
 466
 467                                 selection.clear();
 468                                 selection.add_track(track);
 469
 470                                 mode = SELECT;
 471                         }
 472                 }
 473                 else
 474                         mode = SELECT;
 475         }
 476         else if(mode==SELECT)
 477         {
 478                 if(btn==1)
 479                 {
 480                         Track *track = pick_track(x, y);
 481                         if(track)
 482                         {
 483                                 if(!(mod&Input::MOD_SHIFT))
 484                                         selection.clear();
 485                                 selection.toggle_track(track);
 486                         }
 487                 }
 488         }
 489         else if(mode==MEASURE)
 490                 measure.button_press(x, y, ground.x, ground.y, btn);
 491 }
 492
 493 void Designer::pointer_motion(int x, int y)
 494 {
 495         y = window.get_height()-y-1;
 496
 497         if(!root.get_child_at(x, y))
 498         {
 499                 Vector ground = map_pointer_to_ground(x, y);
 500                 measure.pointer_motion(x, y, ground.x, ground.y);
 501         }
 502 }
 503
 504 void Designer::render()
 505 {
 506         GL::Framebuffer::system().clear(GL::COLOR_BUFFER_BIT|GL::DEPTH_BUFFER_BIT);
 507
 508         View3D *view = (mode==CATALOGUE ? cat_view : main_view);
 509         view->render();
 510         if(mode==MEASURE)
 511         {
 512                 GL::Bind bind_depth(GL::DepthTest::lequal());
 513                 measure.render();
 514         }
 515
 516         root.render();
 517         // XXX Should fix GLtk so this would not be needed
 518         glColor3f(1.0, 1.0, 1.0);
 519 }
 520
 521 void Designer::track_added(Track &trk)
 522 {
 523         new_tracks.push_back(&trk);
 524 }
 525
 526 void Designer::track_removed(Track &trk)
 527 {
 528         list<Track *>::iterator i = find(new_tracks.begin(), new_tracks.end(), &trk);
 529         if(i!=new_tracks.end())
 530                 new_tracks.erase(i);
 531 }
 532
 533 Track *Designer::pick_track(int x, int y)
 534 {
 535         float xx = x*2.0/window.get_width()-1.0;
 536         float yy = y*2.0/window.get_height()-1.0;
 537
 538         View3D &view = *(mode==CATALOGUE ? cat_view : main_view);
 539         const GL::Vector3 &cpos = view.get_camera().get_position();
 540         GL::Vector4 cray = view.get_camera().unproject(GL::Vector4(xx, yy, 0, 0));
 541
 542         return view.get_layout().get_layout().pick_track(Vector(cpos.x, cpos.y, cpos.z), Vector(cray.x, cray.y, cray.z));
 543 }
 544
 545 void Designer::update_track_icon(Track3D &track)
 546 {
 547         overlay->clear(track);
 548
 549         if(track.get_track().get_flex())
 550                 overlay->add_graphic(track, "flex");
 551
 552         if(unsigned sid = track.get_track().get_sensor_id())
 553         {
 554                 overlay->add_graphic(track, "sensor");
 555                 overlay->set_label(track, lexical_cast<string>(sid));
 556         }
 557         else if(unsigned tid = track.get_track().get_turnout_id())
 558         {
 559                 if(tid<0x800)
 560                 {
 561                         overlay->add_graphic(track, "turnout");
 562                         overlay->set_label(track, lexical_cast<string>(tid));
 563                 }
 564         }
 565 }
 566
 567 void Designer::selection_changed()
 568 {
 569         const set<Track *> &tracks = selection.get_tracks();
 570         if(tracks.empty())
 571                 lbl_status->set_text(string());
 572         else
 573         {
 574                 float len = 0;
 575                 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 576                         len += (*i)->get_type().get_total_length();
 577                 lbl_status->set_text(format("%.2fm of track selected\n", len));
 578         }
 579 }
 580
 581 void Designer::manipulation_status(const string &status)
 582 {
 583         lbl_status->set_text(status);
 584 }
 585
 586 void Designer::manipulation_done(bool)
 587 {
 588         mode = MANIPULATE_DONE;
 589         selection_changed();
 590 }
 591
 592 void Designer::measure_changed()
 593 {
 594         float pard = measure.get_parallel_distance()*1000;
 595         float perpd = measure.get_perpendicular_distance()*1000;
 596         float d = sqrt(pard*pard+perpd*perpd);
 597         float adiff = measure.get_angle_difference()*180/M_PI;
 598         string info = format("Par %.1fmm - Perp %.1fmm - Total %.1fmm - Angle %.1f°", pard, perpd, d, adiff);
 599         lbl_status->set_text(info);
 600 }
 601
 602 void Designer::measure_done()
 603 {
 604         mode = SELECT;
 605         selection_changed();
 606 }
 607
 608 void Designer::arrange_toolbars()
 609 {
 610         unsigned x = 0;
 611         for(vector<Toolbar *>::iterator i=toolbars.begin(); i!=toolbars.end(); ++i)
 612         {
 613                 const GLtk::Geometry &geom = (*i)->get_geometry();
 614                 (*i)->set_position(x, window.get_height()-geom.h);
 615                 x += geom.w;
 616         }
 617 }
 618
 619 void Designer::track_properties_response(int)
 620 {
 621         const set<Track *> &tracks = selection.get_tracks();
 622         for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
 623                 update_track_icon(layout_3d->get_track(**i));
 624 }
 625
 626 void Designer::route_name_accept(const string &text)
 627 {
 628         if(cur_route)
 629                 cur_route->set_name(text);
 630 }
 631
 632 void Designer::svg_export_accept(const string &text)
 633 {
 634         SvgExporter svg_exp(*layout);
 635         svg_exp.save(text);
 636 }
 637
 638 string Designer::tooltip(int x, int y)
 639 {
 640         if(Track *track = pick_track(x, y))
 641         {
 642                 const TrackType &ttype = track->get_type();
 643                 string info = format("%d %s", ttype.get_article_number(), ttype.get_description());
 644                 if(mode!=CATALOGUE && abs(track->get_slope())>1e-4)
 645                         info += format(" (slope %.1f%%)", abs(track->get_slope()/ttype.get_total_length()*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_tracks();
 660         for(set<Track *>::iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 661         {
 662                 Track3D &t3d = layout_3d->get_track(**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_track(**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_track(**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 }