source/designer/manipulator.cpp

   1 /* $Id$
   2
   3 This file is part of the MSP Märklin suite
   4 Copyright © 2006-2010  Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <algorithm>
   9 #include <cmath>
  10 #include <msp/strings/formatter.h>
  11 #include "libmarklin/tracktype.h"
  12 #include "designer.h"
  13 #include "manipulator.h"
  14 #include "selection.h"
  15
  16 using namespace std;
  17 using namespace Marklin;
  18 using namespace Msp;
  19
  20 Manipulator::Manipulator(Designer &d, Graphics::EventSource &es, Selection &s):
  21         designer(d),
  22         event_source(es),
  23         selection(s),
  24         mode(NONE),
  25         angle(0)
  26 {
  27         event_source.signal_button_press.connect(sigc::mem_fun(this, &Manipulator::button_press));
  28         event_source.signal_pointer_motion.connect(sigc::mem_fun(this, &Manipulator::pointer_motion));
  29         selection.signal_changed.connect(sigc::mem_fun(this, &Manipulator::selection_changed));
  30 }
  31
  32 void Manipulator::start_move()
  33 {
  34         if(mode)
  35                 cancel();
  36
  37         move_origin = gpointer;
  38
  39         mode = MOVE;
  40 }
  41
  42 void Manipulator::start_rotate()
  43 {
  44         if(mode)
  45                 cancel();
  46
  47         rot_origin = atan2(gpointer.y-center.y, gpointer.x-center.x);
  48
  49         mode = ROTATE;
  50 }
  51
  52 void Manipulator::start_elevate()
  53 {
  54         if(mode)
  55                 cancel();
  56
  57         elev_origin = pointer_y;
  58
  59         mode = ELEVATE;
  60 }
  61
  62 void Manipulator::start_extend()
  63 {
  64         if(mode)
  65                 cancel();
  66
  67         mode = EXTEND;
  68 }
  69
  70 void Manipulator::duplicate()
  71 {
  72         if(mode)
  73                 cancel();
  74
  75         list<Track *> new_tracks;
  76         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  77         {
  78                 Track *track = new Track(designer.get_layout(), i->track->get_type());
  79                 track->set_position(i->track->get_position());
  80                 track->set_rotation(i->track->get_rotation());
  81                 new_tracks.push_back(track);
  82         }
  83
  84         selection.clear();
  85         for(list<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
  86         {
  87                 selection.add_track(*i);
  88                 for(list<Track *>::iterator j=i; j!=new_tracks.end(); ++j)
  89                         if(j!=i)
  90                                 (*i)->snap_to(**j, true);
  91         }
  92 }
  93
  94 void Manipulator::flatten()
  95 {
  96         if(mode)
  97                 cancel();
  98
  99         if(tracks.empty()) return;
 100
 101         float z = 0;
 102         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 103                 z += i->track->get_position().z+i->track->get_slope()/2;
 104         z /= tracks.size();
 105
 106         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 107         {
 108                 Point p = i->track->get_position();
 109                 i->track->set_position(Point(p.x, p.y, z));
 110                 i->track->set_slope(0);
 111         }
 112
 113         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 114                 (*i)->check_slope();
 115
 116         update_tracks();
 117 }
 118
 119 void Manipulator::even_slope(bool smooth)
 120 {
 121         if(mode)
 122                 cancel();
 123
 124         if(neighbors.size()!=2)
 125                 return;
 126
 127         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 128                 if(i->track->get_type().get_endpoints().size()!=2)
 129                         return;
 130
 131         list<Track *> tracks2;
 132         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 133                 tracks2.push_back(i->track);
 134
 135         float total_len = 0;
 136
 137         list<TrackOrder> order;
 138         Track *cur = *neighbors.begin();
 139         while(tracks2.size())
 140         {
 141                 bool rev = false;
 142                 for(list<Track *>::iterator i=tracks2.begin(); i!=tracks2.end(); ++i)
 143                 {
 144                         const vector<Track *> &links = (*i)->get_links();
 145                         if(links[0]==cur)
 146                         {
 147                                 cur = *i;
 148                                 tracks2.erase(i);
 149                                 break;
 150                         }
 151                         else if(links[1]==cur)
 152                         {
 153                                 cur = *i;
 154                                 rev = true;
 155                                 tracks2.erase(i);
 156                                 break;
 157                         }
 158                 }
 159                 order.push_back(TrackOrder(cur, rev));
 160                 total_len += cur->get_type().get_total_length();
 161         }
 162
 163         set<Track *>::iterator nb = neighbors.begin();
 164         int epi = (*nb)->get_endpoint_by_link(*order.front().track);
 165         float start_z = (*nb)->get_endpoint_position(epi).z;
 166         ++nb;
 167         epi = (*nb)->get_endpoint_by_link(*order.back().track);
 168         float end_z = (*nb)->get_endpoint_position(epi).z;
 169
 170         if(smooth)
 171         {
 172                 float dir = (end_z>start_z)?1:-1;
 173                 float cur_slope = 0;
 174                 while((end_z-start_z)*dir/total_len>cur_slope+0.025 && order.size()>2)
 175                 {
 176                         cur_slope += 0.025;
 177
 178                         float dz = order.front().track->get_type().get_total_length()*dir*cur_slope;
 179                         set_slope(order.front(), start_z, dz);
 180                         start_z += dz;
 181                         total_len -= order.front().track->get_type().get_total_length();
 182                         order.erase(order.begin());
 183
 184                         dz = order.back().track->get_type().get_total_length()*dir*cur_slope;
 185                         set_slope(order.back(), end_z-dz, dz);
 186                         end_z -= dz;
 187                         total_len -= order.back().track->get_type().get_total_length();
 188                         order.erase(--order.end());
 189                 }
 190         }
 191
 192         float cur_z = start_z;
 193         for(list<TrackOrder>::iterator i=order.begin(); i!=order.end(); ++i)
 194         {
 195                 float dz = i->track->get_type().get_total_length()*(end_z-start_z)/total_len;
 196                 set_slope(*i, cur_z, dz);
 197                 cur_z += dz;
 198         }
 199
 200         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 201                 (*i)->check_slope();
 202
 203         update_tracks();
 204 }
 205
 206 void Manipulator::connect()
 207 {
 208         if(tracks.size()!=2)
 209         {
 210                 signal_status.emit("Exactly two tracks must be selected");
 211                 return;
 212         }
 213
 214         float limit = 0.001;
 215
 216         Track *track1 = tracks.front().track;
 217         Point pos1;
 218         float dir1;
 219         Track *track2 = tracks.back().track;
 220         bool ok = false;
 221         float gap = 0;
 222         for(unsigned i=0; i<track1->get_type().get_endpoints().size(); ++i)
 223         {
 224                 if(track1->get_link(i))
 225                         continue;
 226
 227                 pos1 = track1->get_endpoint_position(i);
 228                 dir1 = track1->get_endpoint_direction(i);
 229
 230                 for(unsigned j=0; j<track2->get_type().get_endpoints().size(); ++j)
 231                 {
 232                         if(track2->get_link(j))
 233                                 continue;
 234
 235                         Point pos2 = track2->get_endpoint_position(j);
 236                         float dir2 = track2->get_endpoint_direction(j);
 237
 238                         float dz = pos2.z-pos1.z;
 239                         if(abs(dz)>0.02)
 240                                 continue;
 241
 242                         float adiff = dir1+M_PI-dir2;
 243                         while(adiff<-M_PI)
 244                                 adiff += M_PI*2;
 245                         while(adiff>M_PI)
 246                                 adiff -= M_PI*2;
 247                         if(abs(adiff)>0.01)
 248                                 continue;
 249
 250                         float c = cos(dir1);
 251                         float s = sin(dir1);
 252                         float dx = pos2.x-pos1.x;
 253                         float dy = pos2.y-pos1.y;
 254                         if(abs(dx*s-dy*c)>limit)
 255                                 continue;
 256
 257                         gap = dx*c+dy*s;
 258                         if(gap<0)
 259                                 continue;
 260
 261                         ok = true;
 262                 }
 263
 264                 if(ok)
 265                         break;
 266         }
 267
 268         if(!ok)
 269         {
 270                 signal_status.emit("No aligned endpoints found");
 271                 return;
 272         }
 273
 274         vector<Track *> trks = create_straight(pos1, dir1, gap, limit);
 275
 276         if(trks.empty())
 277         {
 278                 signal_status.emit("No connection possible");
 279                 return;
 280         }
 281
 282         trks.front()->snap_to(*track1, true);
 283         trks.back()->snap_to(*track2, true);
 284
 285         selection.replace(trks.begin(), trks.end());
 286 }
 287
 288 void Manipulator::cancel()
 289 {
 290         if(!mode)
 291                 return;
 292         mode = NONE;
 293
 294         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 295         {
 296                 i->track->set_position(Point(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z));
 297                 i->track->set_rotation(i->rot);
 298         }
 299
 300         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 301                 (*i)->check_slope();
 302
 303         for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 304                 delete *i;
 305         extend_tracks.clear();
 306
 307         angle = 0;
 308
 309         signal_done.emit(false);
 310 }
 311
 312 void Manipulator::button_press(int, int, unsigned btn, unsigned)
 313 {
 314         if(!mode)
 315                 return;
 316
 317         if(btn==3)
 318                 cancel();
 319         else if(btn==1)
 320         {
 321                 Mode m = mode;
 322                 mode = NONE;
 323                 angle = 0;
 324
 325                 if(m!=EXTEND)
 326                 {
 327                         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 328                                 for(vector<MTrack>::iterator j=tracks.begin(); j!=tracks.end(); ++j)
 329                                         j->track->break_link(**i);
 330                 }
 331
 332                 const set<Track *> &ltracks = designer.get_layout().get_tracks();
 333                 for(set<Track *>::const_iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 334                 {
 335                         bool ok = true;
 336                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && ok); ++j)
 337                                 ok = (j->track!=*i);
 338                         if(!ok) continue;
 339
 340                         for(vector<MTrack>::iterator j=tracks.begin(); j!=tracks.end(); ++j)
 341                                 j->track->snap_to(**i, true);
 342                 }
 343
 344                 if(m==EXTEND)
 345                 {
 346                         selection.replace(extend_tracks.begin(), extend_tracks.end());
 347                         extend_tracks.clear();
 348                 }
 349                 else
 350                 {
 351                         update_tracks();
 352                         update_neighbors();
 353                 }
 354
 355                 signal_done.emit(true);
 356         }
 357 }
 358
 359 void Manipulator::pointer_motion(int x, int y)
 360 {
 361         pointer_y = y;
 362         gpointer = designer.map_pointer_to_ground(x, event_source.get_height()-1-y);
 363
 364         if(mode==MOVE)
 365         {
 366                 Point delta(gpointer.x-move_origin.x, gpointer.y-move_origin.y, 0);
 367                 Point offset(center.x+delta.x, center.y+delta.y, center.z);
 368                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 369                 {
 370                         i->track->set_position(Point(offset.x+i->pos.x, offset.y+i->pos.y, offset.z+i->pos.z));
 371                         i->track->set_rotation(i->rot);
 372                 }
 373
 374                 const set<Track *> &ltracks = designer.get_layout().get_tracks();
 375                 MTrack *snapped = 0;
 376                 for(set<Track *>::const_iterator i=ltracks.begin(); (i!=ltracks.end() && !snapped); ++i)
 377                 {
 378                         bool ok = true;
 379                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && ok); ++j)
 380                                 ok = (j->track!=*i);
 381                         if(!ok) continue;
 382
 383                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && !snapped); ++j)
 384                                 if(j->track->snap_to(**i, false))
 385                                         snapped = &*j;
 386                 }
 387
 388                 if(snapped)
 389                 {
 390                         float da = snapped->track->get_rotation()-snapped->rot;
 391                         float c = cos(da);
 392                         float s = sin(da);
 393                         const Point &sp = snapped->track->get_position();
 394                         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 395                         {
 396                                 if(&*i==snapped)
 397                                         continue;
 398
 399                                 Point dp(i->pos.x-snapped->pos.x, i->pos.y-snapped->pos.y, 0);
 400                                 i->track->set_position(Point(sp.x+c*dp.x-s*dp.y, sp.y+s*dp.x+c*dp.y, sp.z+i->pos.z-snapped->pos.z));
 401                                 i->track->set_rotation(i->rot+da);
 402                         }
 403                 }
 404         }
 405         else if(mode==ROTATE)
 406         {
 407                 float a = atan2(gpointer.y-center.y, gpointer.x-center.x);
 408                 angle += a-rot_origin;
 409                 rot_origin = a;
 410
 411                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 412                 {
 413                         float c = cos(angle);
 414                         float s = sin(angle);
 415                         i->track->set_position(Point(center.x+c*i->pos.x-s*i->pos.y, center.y+s*i->pos.x+c*i->pos.y, center.z+i->pos.z));
 416                         i->track->set_rotation(angle+i->rot);
 417                 }
 418         }
 419         else if(mode==ELEVATE)
 420         {
 421                 float dz = (y-elev_origin)/1000.;
 422
 423                 signal_status.emit(format("Elevation: %+.0fmm (%.0fmm)", dz*1000, (center.z+dz)*1000));
 424
 425                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 426                         i->track->set_position(Point(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z+dz));
 427
 428                 for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 429                         (*i)->check_slope();
 430         }
 431         else if(mode==EXTEND)
 432         {
 433                 Point pos;
 434                 float dir = 0;
 435                 float length = 0;
 436                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 437                 {
 438                         unsigned n_endpoints = i->track->get_type().get_endpoints().size();
 439                         for(unsigned j=0; j<n_endpoints; ++j)
 440                         {
 441                                 if(i->track->get_link(j))
 442                                         continue;
 443
 444                                 Point ep_pos = i->track->get_endpoint_position(j);
 445                                 float ep_dir = i->track->get_endpoint_direction(j);
 446                                 float c = cos(ep_dir);
 447                                 float s = sin(ep_dir);
 448                                 float dx = gpointer.x-ep_pos.x;
 449                                 float dy = gpointer.y-ep_pos.y;
 450
 451                                 float len = dx*c+dy*s;
 452                                 if(len<length)
 453                                         continue;
 454
 455                                 pos = ep_pos;
 456                                 dir = ep_dir;
 457                                 length = len;
 458                         }
 459                 }
 460
 461                 if(length)
 462                 {
 463                         vector<Track *> trks = create_straight(pos, dir, length, max(length/500, 0.001f));
 464
 465                         if(!trks.empty())
 466                         {
 467                                 for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 468                                         delete *i;
 469                                 extend_tracks = trks;
 470
 471                                 length = 0;
 472                                 for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 473                                         length += (*i)->get_type().get_total_length();
 474
 475                                 signal_status.emit(format("Extend: %.0fmm", length*1000));
 476                         }
 477                 }
 478         }
 479 }
 480
 481 void Manipulator::selection_changed()
 482 {
 483         if(mode)
 484                 cancel();
 485
 486         tracks.clear();
 487         const set<Track *> &stracks = selection.get_tracks();
 488         tracks.insert(tracks.end(), stracks.begin(), stracks.end());
 489
 490         update_neighbors();
 491         update_tracks();
 492 }
 493
 494 void Manipulator::update_tracks()
 495 {
 496         Point minp, maxp;
 497         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 498         {
 499                 unsigned n_endpoints = i->track->get_type().get_endpoints().size();
 500                 for(unsigned j=0; j<n_endpoints; ++j)
 501                 {
 502                         Point p = i->track->get_endpoint_position(j);
 503                         if(i==tracks.begin() && j==0)
 504                                 minp = maxp = p;
 505                         else
 506                         {
 507                                 minp.x = min(minp.x, p.x);
 508                                 maxp.x = max(maxp.x, p.x);
 509                                 minp.y = min(minp.y, p.y);
 510                                 maxp.y = max(maxp.y, p.y);
 511                                 minp.z = min(minp.z, p.z);
 512                         }
 513                 }
 514         }
 515
 516         center = Point((minp.x+maxp.x)/2, (minp.y+maxp.y)/2, minp.z);
 517         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 518         {
 519                 const Point &tp = i->track->get_position();
 520                 i->pos = Point(tp.x-center.x, tp.y-center.y, tp.z-center.z);
 521                 i->rot = i->track->get_rotation();
 522         }
 523 }
 524
 525 void Manipulator::update_neighbors()
 526 {
 527         neighbors.clear();
 528         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 529         {
 530                 const vector<Track *> &links = i->track->get_links();
 531                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
 532                 {
 533                         if(!*j)
 534                                 continue;
 535                         if(neighbors.count(*j))
 536                                 continue;
 537
 538                         bool ok = true;
 539                         for(vector<MTrack>::iterator k=tracks.begin(); (k!=tracks.end() && ok); ++k)
 540                                 ok = (k->track!=*j);
 541
 542                         if(ok)
 543                                 neighbors.insert(*j);
 544                 }
 545         }
 546 }
 547
 548 void Manipulator::set_slope(TrackOrder &track, float z, float dz)
 549 {
 550         const Point &p = track.track->get_position();
 551         if(track.rev)
 552         {
 553                 track.track->set_position(Point(p.x, p.y, z+dz));
 554                 track.track->set_slope(-dz);
 555         }
 556         else
 557         {
 558                 track.track->set_position(Point(p.x, p.y, z));
 559                 track.track->set_slope(dz);
 560         }
 561 }
 562
 563 vector<Track *> Manipulator::create_straight(const Marklin::Point &start, float dir, float length, float limit)
 564 {
 565         const Catalogue::TrackMap &track_types = designer.get_catalogue().get_tracks();
 566         std::map<float, const TrackType *> types_by_length;
 567         unsigned preference = 0;
 568         for(Catalogue::TrackMap::const_iterator i=track_types.begin(); i!=track_types.end(); ++i)
 569         {
 570                 const vector<TrackPart> &parts = i->second->get_parts();
 571                 if(parts.size()!=1)
 572                         continue;
 573                 if(parts.front().is_curved() || parts.front().is_dead_end())
 574                         continue;
 575
 576                 types_by_length[parts.front().get_length()] = i->second;
 577                 preference = max(preference, i->second->get_autofit_preference());
 578         }
 579
 580         vector<float> lengths;
 581         float removed = 0;
 582         while(length>limit)
 583         {
 584                 bool found = false;
 585                 for(map<float, const TrackType *>::iterator i=types_by_length.end(); i!=types_by_length.begin(); )
 586                 {
 587                         --i;
 588                         if(i->second->get_autofit_preference()<preference)
 589                                 continue;
 590                         if((!removed || i->first<removed) && i->first<length+limit)
 591                         {
 592                                 unsigned n = static_cast<unsigned>((length+limit)/i->first);
 593                                 lengths.insert(lengths.end(), n, i->first);
 594                                 length -= n*i->first;
 595                                 found = true;
 596                                 break;
 597                         }
 598                 }
 599
 600                 if(found)
 601                         continue;
 602
 603                 if(lengths.empty())
 604                 {
 605                         if(preference>0)
 606                         {
 607                                 --preference;
 608                                 removed = 0;
 609                                 continue;
 610                         }
 611                         break;
 612                 }
 613
 614                 length += lengths.back();
 615                 removed = lengths.back();
 616                 lengths.pop_back();
 617         }
 618
 619         vector<Track *> trks;
 620
 621         if(!lengths.empty())
 622         {
 623                 Point pos = start;
 624                 float c = cos(dir);
 625                 float s = sin(dir);
 626                 for(vector<float>::iterator i=lengths.begin(); i!=lengths.end(); ++i)
 627                 {
 628                         map<float, const TrackType *>::iterator j = types_by_length.find(*i);
 629                         if(j==types_by_length.end())
 630                                 throw LogicError("Internal error");
 631
 632                         Track *track = new Track(designer.get_layout(), *j->second);
 633                         track->set_position(pos);
 634                         track->set_rotation(dir);
 635
 636                         if(!trks.empty())
 637                                 track->snap_to(*trks.back(), true);
 638                         trks.push_back(track);
 639
 640                         pos.x += c**i;
 641                         pos.y += s**i;
 642                 }
 643         }
 644
 645         return trks;
 646 }
 647
 648
 649 Manipulator::MTrack::MTrack(Track *t):
 650         track(t),
 651         pos(track->get_position()),
 652         rot(track->get_rotation())
 653 { }