source/designer/manipulator.cpp

   1 #include <algorithm>
   2 #include <cmath>
   3 #include <msp/strings/format.h>
   4 #include "libr2c2/tracktype.h"
   5 #include "designer.h"
   6 #include "manipulator.h"
   7 #include "selection.h"
   8
   9 using namespace std;
  10 using namespace R2C2;
  11 using namespace Msp;
  12
  13 Manipulator::Manipulator(Designer &d, Input::Mouse &m, Selection &s):
  14         designer(d),
  15         mouse(m),
  16         selection(s),
  17         mode(NONE),
  18         angle(0)
  19 {
  20         mouse.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &Manipulator::button_press), false));
  21         mouse.signal_axis_motion.connect(sigc::bind_return(sigc::mem_fun(this, &Manipulator::axis_motion), false));
  22         selection.signal_changed.connect(sigc::mem_fun(this, &Manipulator::selection_changed));
  23 }
  24
  25 void Manipulator::start_move()
  26 {
  27         if(mode)
  28                 cancel();
  29
  30         move_origin = gpointer;
  31
  32         mode = MOVE;
  33 }
  34
  35 void Manipulator::start_rotate()
  36 {
  37         if(mode)
  38                 cancel();
  39
  40         rot_origin = atan2(gpointer.y-center.y, gpointer.x-center.x);
  41
  42         mode = ROTATE;
  43 }
  44
  45 void Manipulator::start_elevate()
  46 {
  47         if(mode)
  48                 cancel();
  49
  50         mode = ELEVATE;
  51
  52         elev_origin = pointer.y;
  53 }
  54
  55 bool Manipulator::start_extend()
  56 {
  57         if(mode)
  58                 cancel();
  59
  60         bool ok = false;
  61         const set<Track *> &stracks = selection.get_objects<Track>();
  62         for(set<Track *>::const_iterator i=stracks.begin(); (!ok && i!=stracks.end()); ++i)
  63         {
  64                 const vector<Track *> &links = (*i)->get_links();
  65                 for(vector<Track *>::const_iterator j=links.begin(); (!ok && j!=links.end()); ++j)
  66                         ok = !*j;
  67         }
  68
  69         if(ok)
  70                 mode = EXTEND;
  71         else
  72                 signal_status.emit("No free endpoints");
  73
  74         return ok;
  75 }
  76
  77 void Manipulator::duplicate()
  78 {
  79         if(mode)
  80                 cancel();
  81
  82         list<Object *> new_objs;
  83         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
  84         {
  85                 Object *obj = i->object->clone(&designer.get_layout());
  86                 for(list<Object *>::iterator j=new_objs.begin(); j!=new_objs.end(); ++j)
  87                         obj->link_to(**j);
  88                 new_objs.push_back(obj);
  89         }
  90
  91         selection.replace(new_objs.begin(), new_objs.end());
  92 }
  93
  94 void Manipulator::flatten()
  95 {
  96         if(mode)
  97                 cancel();
  98
  99         if(objects.empty())
 100                 return;
 101
 102         float z = 0;
 103         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 104         {
 105                 z += i->object->get_position().z;
 106                 if(Track *track = dynamic_cast<Track *>(i->object))
 107                         z += track->get_slope()/2;
 108         }
 109         z /= static_cast<int>(objects.size());
 110
 111         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 112         {
 113                 Vector p = i->object->get_position();
 114                 i->object->set_position(Vector(p.x, p.y, z));
 115                 if(Track *track = dynamic_cast<Track *>(i->object))
 116                         track->set_slope(0);
 117         }
 118
 119         update_objects();
 120 }
 121
 122 void Manipulator::even_slope(bool smooth)
 123 {
 124         if(mode)
 125                 cancel();
 126
 127         if(neighbors.size()!=2)
 128                 return;
 129
 130         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 131                 if(i->object->get_n_link_slots()!=2)
 132                         return;
 133
 134         list<Track *> tracks2;
 135         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 136                 if(Track *track = dynamic_cast<Track *>(i->object))
 137                         tracks2.push_back(track);
 138
 139         float total_len = 0;
 140
 141         list<TrackOrder> order;
 142         Track *cur = dynamic_cast<Track *>(*neighbors.begin());
 143         while(tracks2.size())
 144         {
 145                 bool rev = false;
 146                 for(list<Track *>::iterator i=tracks2.begin(); i!=tracks2.end(); ++i)
 147                 {
 148                         const vector<Track *> &links = (*i)->get_links();
 149                         if(links[0]==cur)
 150                         {
 151                                 cur = *i;
 152                                 tracks2.erase(i);
 153                                 break;
 154                         }
 155                         else if(links[1]==cur)
 156                         {
 157                                 cur = *i;
 158                                 rev = true;
 159                                 tracks2.erase(i);
 160                                 break;
 161                         }
 162                 }
 163                 order.push_back(TrackOrder(cur, rev));
 164                 total_len += cur->get_type().get_total_length();
 165         }
 166
 167         set<Object *>::iterator nb = neighbors.begin();
 168         int epi = (*nb)->get_link_slot(*order.front().track);
 169         float start_z = (*nb)->get_snap_node(epi).position.z;
 170         ++nb;
 171         epi = (*nb)->get_link_slot(*order.back().track);
 172         float end_z = (*nb)->get_snap_node(epi).position.z;
 173
 174         if(smooth)
 175         {
 176                 float dir = (end_z>start_z)?1:-1;
 177                 float cur_slope = 0;
 178                 while((end_z-start_z)*dir/total_len>cur_slope+0.025 && order.size()>2)
 179                 {
 180                         cur_slope += 0.025;
 181
 182                         float dz = order.front().track->get_type().get_total_length()*dir*cur_slope;
 183                         set_slope(order.front(), start_z, dz);
 184                         start_z += dz;
 185                         total_len -= order.front().track->get_type().get_total_length();
 186                         order.erase(order.begin());
 187
 188                         dz = order.back().track->get_type().get_total_length()*dir*cur_slope;
 189                         set_slope(order.back(), end_z-dz, dz);
 190                         end_z -= dz;
 191                         total_len -= order.back().track->get_type().get_total_length();
 192                         order.erase(--order.end());
 193                 }
 194         }
 195
 196         float cur_z = start_z;
 197         for(list<TrackOrder>::iterator i=order.begin(); i!=order.end(); ++i)
 198         {
 199                 float dz = i->track->get_type().get_total_length()*(end_z-start_z)/total_len;
 200                 set_slope(*i, cur_z, dz);
 201                 cur_z += dz;
 202         }
 203
 204         update_objects();
 205 }
 206
 207 void Manipulator::connect()
 208 {
 209         if(objects.size()!=2)
 210         {
 211                 signal_status.emit("Exactly two tracks must be selected");
 212                 return;
 213         }
 214
 215         Track *track1 = dynamic_cast<Track *>(objects.front().object);
 216         Track *track2 = dynamic_cast<Track *>(objects.back().object);
 217         if(!track1 || !track2)
 218         {
 219                 signal_status.emit("Exactly two tracks must be selected");
 220                 return;
 221         }
 222
 223         float limit = designer.get_layout().get_catalogue().get_gauge()/10;
 224
 225         Snap sn1;
 226         bool ok = false;
 227         float gap = 0;
 228         for(unsigned i=0; i<track1->get_type().get_endpoints().size(); ++i)
 229         {
 230                 if(track1->get_link(i))
 231                         continue;
 232
 233                 sn1 = track1->get_snap_node(i);
 234
 235                 for(unsigned j=0; j<track2->get_type().get_endpoints().size(); ++j)
 236                 {
 237                         if(track2->get_link(j))
 238                                 continue;
 239
 240                         Snap sn2 = track2->get_snap_node(j);
 241
 242                         float dz = sn2.position.z-sn1.position.z;
 243                         if(abs(dz)>0.02)
 244                                 continue;
 245
 246                         float adiff = sn1.rotation+M_PI-sn2.rotation;
 247                         while(adiff<-M_PI)
 248                                 adiff += M_PI*2;
 249                         while(adiff>M_PI)
 250                                 adiff -= M_PI*2;
 251                         if(abs(adiff)>0.01)
 252                                 continue;
 253
 254                         float c = cos(sn1.rotation);
 255                         float s = sin(sn1.rotation);
 256                         float dx = sn2.position.x-sn1.position.x;
 257                         float dy = sn2.position.y-sn1.position.y;
 258                         if(abs(dx*s-dy*c)>limit)
 259                                 continue;
 260
 261                         gap = dx*c+dy*s;
 262                         if(gap<0)
 263                                 continue;
 264
 265                         ok = true;
 266                 }
 267
 268                 if(ok)
 269                         break;
 270         }
 271
 272         if(!ok)
 273         {
 274                 signal_status.emit("No aligned endpoints found");
 275                 return;
 276         }
 277
 278         vector<Track *> trks = create_straight(sn1.position, sn1.rotation, gap, limit);
 279
 280         if(trks.empty())
 281         {
 282                 signal_status.emit("No connection possible");
 283                 return;
 284         }
 285
 286         trks.front()->link_to(*track1);
 287         trks.back()->link_to(*track2);
 288
 289         selection.replace(trks.begin(), trks.end());
 290 }
 291
 292 void Manipulator::cancel()
 293 {
 294         if(!mode)
 295                 return;
 296         mode = NONE;
 297
 298         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 299         {
 300                 i->object->set_position(Vector(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z));
 301                 i->object->set_rotation(i->rot);
 302         }
 303
 304         for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 305                 delete *i;
 306         extend_tracks.clear();
 307
 308         angle = 0;
 309
 310         signal_done.emit(false);
 311 }
 312
 313 void Manipulator::button_press(unsigned btn)
 314 {
 315         if(!mode)
 316                 return;
 317
 318         if(btn==3)
 319                 cancel();
 320         else if(btn==1)
 321         {
 322                 Mode m = mode;
 323                 mode = NONE;
 324                 angle = 0;
 325
 326                 if(m!=EXTEND)
 327                 {
 328                         for(set<Object *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 329                                 for(vector<MObject>::iterator j=objects.begin(); j!=objects.end(); ++j)
 330                                         j->object->break_link(**i);
 331                 }
 332
 333                 const set<Track *> &ltracks = designer.get_layout().get_tracks();
 334                 for(set<Track *>::const_iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 335                 {
 336                         bool ok = true;
 337                         for(vector<MObject>::iterator j=objects.begin(); (j!=objects.end() && ok); ++j)
 338                                 ok = (j->object!=*i);
 339                         if(!ok) continue;
 340
 341                         for(vector<MObject>::iterator j=objects.begin(); j!=objects.end(); ++j)
 342                                 j->object->link_to(**i);
 343                 }
 344
 345                 if(m==EXTEND)
 346                 {
 347                         selection.replace(extend_tracks.begin(), extend_tracks.end());
 348                         extend_tracks.clear();
 349                 }
 350                 else
 351                 {
 352                         update_objects();
 353                         update_neighbors();
 354                 }
 355
 356                 signal_done.emit(true);
 357         }
 358 }
 359
 360 void Manipulator::axis_motion(unsigned axis, float value, float)
 361 {
 362         if(axis==0)
 363                 pointer.x = value;
 364         else if(axis==1)
 365                 pointer.y = value;
 366         gpointer = designer.map_pointer_to_ground(pointer);
 367
 368         if(mode==MOVE)
 369         {
 370                 Vector delta(gpointer.x-move_origin.x, gpointer.y-move_origin.y, 0);
 371                 Vector offset(center.x+delta.x, center.y+delta.y, center.z);
 372                 for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 373                 {
 374                         i->object->set_position(Vector(offset.x+i->pos.x, offset.y+i->pos.y, offset.z+i->pos.z));
 375                         i->object->set_rotation(i->rot);
 376                 }
 377
 378                 const set<Track *> &ltracks = designer.get_layout().get_tracks();
 379                 float limit = max(designer.get_layout().get_catalogue().get_gauge(),
 380                         designer.get_camera_controller().get_view_scale()/100.0f);
 381                 MObject *snapped = 0;
 382                 for(set<Track *>::const_iterator i=ltracks.begin(); (i!=ltracks.end() && !snapped); ++i)
 383                 {
 384                         bool ok = true;
 385                         for(vector<MObject>::iterator j=objects.begin(); (j!=objects.end() && ok); ++j)
 386                                 ok = (j->object!=*i);
 387                         if(!ok)
 388                                 continue;
 389
 390                         for(vector<MObject>::iterator j=objects.begin(); (j!=objects.end() && !snapped); ++j)
 391                                 if(j->object->snap_to(**i, limit))
 392                                         snapped = &*j;
 393                 }
 394
 395                 if(snapped)
 396                 {
 397                         float da = snapped->object->get_rotation()-snapped->rot;
 398                         float c = cos(da);
 399                         float s = sin(da);
 400                         const Vector &sp = snapped->object->get_position();
 401                         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 402                         {
 403                                 if(&*i==snapped)
 404                                         continue;
 405
 406                                 Vector dp(i->pos.x-snapped->pos.x, i->pos.y-snapped->pos.y, 0);
 407                                 i->object->set_position(Vector(sp.x+c*dp.x-s*dp.y, sp.y+s*dp.x+c*dp.y, sp.z+i->pos.z-snapped->pos.z));
 408                                 i->object->set_rotation(i->rot+da);
 409                         }
 410                 }
 411         }
 412         else if(mode==ROTATE)
 413         {
 414                 float a = atan2(gpointer.y-center.y, gpointer.x-center.x);
 415                 angle += a-rot_origin;
 416                 rot_origin = a;
 417
 418                 for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 419                 {
 420                         float c = cos(angle);
 421                         float s = sin(angle);
 422                         i->object->set_position(Vector(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));
 423                         i->object->set_rotation(angle+i->rot);
 424                 }
 425         }
 426         else if(mode==ELEVATE && axis==1)
 427         {
 428                 float dz = pointer.y-elev_origin;
 429
 430                 signal_status.emit(format("Elevation: %+.0fmm (%.0fmm)", dz*1000, (center.z+dz)*1000));
 431
 432                 for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 433                         i->object->set_position(Vector(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z+dz));
 434         }
 435         else if(mode==EXTEND)
 436         {
 437                 Vector pos;
 438                 float dir = 0;
 439                 float length = 0;
 440                 for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 441                 {
 442                         unsigned nls = i->object->get_n_link_slots();
 443                         for(unsigned j=0; j<nls; ++j)
 444                         {
 445                                 if(i->object->get_link(j))
 446                                         continue;
 447
 448                                 Snap sn = i->object->get_snap_node(j);
 449                                 float c = cos(sn.rotation);
 450                                 float s = sin(sn.rotation);
 451                                 float dx = gpointer.x-sn.position.x;
 452                                 float dy = gpointer.y-sn.position.y;
 453
 454                                 float len = dx*c+dy*s;
 455                                 if(len<length)
 456                                         continue;
 457
 458                                 pos = sn.position;
 459                                 dir = sn.rotation;
 460                                 length = len;
 461                         }
 462                 }
 463
 464                 if(length)
 465                 {
 466                         vector<Track *> trks = create_straight(pos, dir, length, max(length/500, 0.001f));
 467
 468                         if(!trks.empty())
 469                         {
 470                                 for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 471                                         delete *i;
 472                                 extend_tracks = trks;
 473
 474                                 map<ArticleNumber, unsigned> counts;
 475                                 length = 0;
 476                                 for(vector<Track *>::iterator i=extend_tracks.begin(); i!=extend_tracks.end(); ++i)
 477                                 {
 478                                         length += (*i)->get_type().get_total_length();
 479                                         ++counts[(*i)->get_type().get_article_number()];
 480                                 }
 481
 482                                 string detail;
 483                                 for(map<ArticleNumber, unsigned>::const_iterator i=counts.begin(); i!=counts.end(); ++i)
 484                                 {
 485                                         if(!detail.empty())
 486                                                 detail += ", ";
 487                                         detail += format("%dx %s", i->second, i->first);
 488                                 }
 489
 490                                 signal_status.emit(format("Extend: %.0fmm (%s)", length*1000, detail));
 491                         }
 492                 }
 493         }
 494 }
 495
 496 void Manipulator::selection_changed()
 497 {
 498         if(mode)
 499                 cancel();
 500
 501         objects.clear();
 502         set<Object *> pending = selection.get_objects();
 503         while(!pending.empty())
 504         {
 505                 for(set<Object *>::iterator i=pending.begin(); i!=pending.end(); )
 506                 {
 507                         if((*i)->get_parent() && pending.count((*i)->get_parent()))
 508                                 ++i;
 509                         else
 510                         {
 511                                 objects.push_back(*i);
 512                                 pending.erase(i++);
 513                         }
 514                 }
 515         }
 516
 517         update_neighbors();
 518         update_objects();
 519 }
 520
 521 void Manipulator::update_objects()
 522 {
 523         Vector minp, maxp;
 524         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 525         {
 526                 // XXX Use generic bounding box when it is implemented
 527                 if(Track *track = dynamic_cast<Track *>(i->object))
 528                 {
 529                         unsigned n_endpoints = track->get_type().get_endpoints().size();
 530                         for(unsigned j=0; j<n_endpoints; ++j)
 531                         {
 532                                 Vector p = track->get_snap_node(j).position;
 533                                 if(i==objects.begin() && j==0)
 534                                         minp = maxp = p;
 535                                 else
 536                                 {
 537                                         minp.x = min(minp.x, p.x);
 538                                         maxp.x = max(maxp.x, p.x);
 539                                         minp.y = min(minp.y, p.y);
 540                                         maxp.y = max(maxp.y, p.y);
 541                                         minp.z = min(minp.z, p.z);
 542                                 }
 543                         }
 544                 }
 545                 else
 546                 {
 547                         const Vector &p = i->object->get_position();
 548                         minp.x = min(minp.x, p.x);
 549                         maxp.x = max(maxp.x, p.x);
 550                         minp.y = min(minp.y, p.y);
 551                         maxp.y = max(maxp.y, p.y);
 552                         minp.z = min(minp.z, p.z);
 553                 }
 554         }
 555
 556         center = Vector((minp.x+maxp.x)/2, (minp.y+maxp.y)/2, minp.z);
 557         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 558         {
 559                 const Vector &p = i->object->get_position();
 560                 i->pos = Vector(p.x-center.x, p.y-center.y, p.z-center.z);
 561                 i->rot = i->object->get_rotation();
 562         }
 563 }
 564
 565 void Manipulator::update_neighbors()
 566 {
 567         neighbors.clear();
 568         for(vector<MObject>::iterator i=objects.begin(); i!=objects.end(); ++i)
 569         {
 570                 unsigned nls = i->object->get_n_link_slots();
 571                 for(unsigned j=0; j<nls; ++j)
 572                 {
 573                         Object *linked = i->object->get_link(j);
 574                         if(!linked)
 575                                 continue;
 576                         if(neighbors.count(linked))
 577                                 continue;
 578
 579                         bool ok = true;
 580                         for(vector<MObject>::iterator k=objects.begin(); (k!=objects.end() && ok); ++k)
 581                                 ok = (k->object!=linked);
 582
 583                         if(ok)
 584                                 neighbors.insert(linked);
 585                 }
 586         }
 587 }
 588
 589 void Manipulator::set_slope(TrackOrder &track, float z, float dz)
 590 {
 591         const Vector &p = track.track->get_position();
 592         if(track.rev)
 593         {
 594                 track.track->set_position(Vector(p.x, p.y, z+dz));
 595                 track.track->set_slope(-dz);
 596         }
 597         else
 598         {
 599                 track.track->set_position(Vector(p.x, p.y, z));
 600                 track.track->set_slope(dz);
 601         }
 602 }
 603
 604 vector<Track *> Manipulator::create_straight(const R2C2::Vector &start, float dir, float length, float limit)
 605 {
 606         const Catalogue::TrackMap &track_types = designer.get_catalogue().get_tracks();
 607         std::map<float, const TrackType *> types_by_length;
 608         unsigned preference = 0;
 609         for(Catalogue::TrackMap::const_iterator i=track_types.begin(); i!=track_types.end(); ++i)
 610         {
 611                 const vector<TrackPart> &parts = i->second->get_parts();
 612                 if(parts.size()!=1)
 613                         continue;
 614                 if(parts.front().is_curved() || parts.front().is_dead_end())
 615                         continue;
 616
 617                 types_by_length[parts.front().get_length()] = i->second;
 618                 preference = max(preference, i->second->get_autofit_preference());
 619         }
 620
 621         vector<float> lengths;
 622         float removed = 0;
 623         while(length>limit)
 624         {
 625                 bool found = false;
 626                 for(map<float, const TrackType *>::iterator i=types_by_length.end(); i!=types_by_length.begin(); )
 627                 {
 628                         --i;
 629                         if(i->second->get_autofit_preference()<preference)
 630                                 continue;
 631                         if((!removed || i->first<removed) && i->first<length+limit)
 632                         {
 633                                 unsigned n = static_cast<unsigned>((length+limit)/i->first);
 634                                 lengths.insert(lengths.end(), n, i->first);
 635                                 length -= n*i->first;
 636                                 found = true;
 637                                 break;
 638                         }
 639                 }
 640
 641                 if(found)
 642                         continue;
 643
 644                 if(lengths.empty())
 645                 {
 646                         if(preference>0)
 647                         {
 648                                 --preference;
 649                                 removed = 0;
 650                                 continue;
 651                         }
 652                         break;
 653                 }
 654
 655                 length += lengths.back();
 656                 removed = lengths.back();
 657                 lengths.pop_back();
 658         }
 659
 660         vector<Track *> trks;
 661
 662         if(!lengths.empty())
 663         {
 664                 Vector pos = start;
 665                 float c = cos(dir);
 666                 float s = sin(dir);
 667                 for(vector<float>::iterator i=lengths.begin(); i!=lengths.end(); ++i)
 668                 {
 669                         Track *track = new Track(designer.get_layout(), *get_item(types_by_length, *i));
 670                         track->set_position(pos);
 671                         track->set_rotation(dir);
 672
 673                         if(!trks.empty())
 674                                 track->link_to(*trks.back());
 675                         trks.push_back(track);
 676
 677                         pos.x += c**i;
 678                         pos.y += s**i;
 679                 }
 680         }
 681
 682         return trks;
 683 }
 684
 685
 686 Manipulator::MObject::MObject(Object *o):
 687         object(o),
 688         pos(object->get_position()),
 689         rot(object->get_rotation())
 690 { }