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 <GL/gl.h>
  11 #include <msp/strings/formatter.h>
  12 #include "3d/layout.h"
  13 #include "libmarklin/tracktype.h"
  14 #include "designer.h"
  15 #include "manipulator.h"
  16 #include "selection.h"
  17
  18 using namespace std;
  19 using namespace Marklin;
  20 using namespace Msp;
  21
  22 Manipulator::Manipulator(Designer &d, Selection &s):
  23         designer(d),
  24         selection(s),
  25         wrap_rot(0),
  26         mode(NONE),
  27         angle(0)
  28 {
  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::duplicate()
  63 {
  64         if(mode)
  65                 cancel();
  66
  67         list<Track *> new_tracks;
  68         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  69         {
  70                 Track *track = new Track(*designer.get_layout(), i->track->get_type());
  71                 new_tracks.push_back(track);
  72         }
  73
  74         selection.clear();
  75         for(list<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
  76         {
  77                 selection.add_track(*i);
  78                 for(list<Track *>::iterator j=i; j!=new_tracks.end(); ++j)
  79                         if(j!=i)
  80                                 (*i)->snap_to(**j, true);
  81         }
  82 }
  83
  84 void Manipulator::flatten()
  85 {
  86         if(mode)
  87                 cancel();
  88
  89         if(tracks.empty()) return;
  90
  91         float z = 0;
  92         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  93                 z += i->track->get_position().z+i->track->get_slope()/2;
  94         z /= tracks.size();
  95
  96         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  97         {
  98                 Point p = i->track->get_position();
  99                 i->track->set_position(Point(p.x, p.y, z));
 100                 i->track->set_slope(0);
 101         }
 102
 103         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 104                 (*i)->check_slope();
 105
 106         update_wrap();
 107 }
 108
 109 void Manipulator::even_slope(bool smooth)
 110 {
 111         if(mode)
 112                 cancel();
 113
 114         if(neighbors.size()!=2)
 115                 return;
 116
 117         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 118                 if(i->track->get_type().get_endpoints().size()!=2)
 119                         return;
 120
 121         list<Track *> tracks2;
 122         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 123                 tracks2.push_back(i->track);
 124
 125         float total_len = 0;
 126
 127         list<TrackOrder> order;
 128         Track *cur = *neighbors.begin();
 129         while(tracks2.size())
 130         {
 131                 bool rev = false;
 132                 for(list<Track *>::iterator i=tracks2.begin(); i!=tracks2.end(); ++i)
 133                 {
 134                         const vector<Track *> &links = (*i)->get_links();
 135                         if(links[0]==cur)
 136                         {
 137                                 cur = *i;
 138                                 tracks2.erase(i);
 139                                 break;
 140                         }
 141                         else if(links[1]==cur)
 142                         {
 143                                 cur = *i;
 144                                 rev = true;
 145                                 tracks2.erase(i);
 146                                 break;
 147                         }
 148                 }
 149                 order.push_back(TrackOrder(cur, rev));
 150                 total_len += cur->get_type().get_total_length();
 151         }
 152
 153         set<Track *>::iterator nb = neighbors.begin();
 154         int epi = (*nb)->get_endpoint_by_link(*order.front().track);
 155         float start_z = (*nb)->get_endpoint_position(epi).z;
 156         ++nb;
 157         epi = (*nb)->get_endpoint_by_link(*order.back().track);
 158         float end_z = (*nb)->get_endpoint_position(epi).z;
 159
 160         if(smooth)
 161         {
 162                 float dir = (end_z>start_z)?1:-1;
 163                 float cur_slope = 0;
 164                 while((end_z-start_z)*dir/total_len>cur_slope+0.025 && order.size()>2)
 165                 {
 166                         cur_slope += 0.025;
 167
 168                         float dz = order.front().track->get_type().get_total_length()*dir*cur_slope;
 169                         set_slope(order.front(), start_z, dz);
 170                         start_z += dz;
 171                         total_len -= order.front().track->get_type().get_total_length();
 172                         order.erase(order.begin());
 173
 174                         dz = order.back().track->get_type().get_total_length()*dir*cur_slope;
 175                         set_slope(order.back(), end_z-dz, dz);
 176                         end_z -= dz;
 177                         total_len -= order.back().track->get_type().get_total_length();
 178                         order.erase(--order.end());
 179                 }
 180         }
 181
 182         float cur_z = start_z;
 183         for(list<TrackOrder>::iterator i=order.begin(); i!=order.end(); ++i)
 184         {
 185                 float dz = i->track->get_type().get_total_length()*(end_z-start_z)/total_len;
 186                 set_slope(*i, cur_z, dz);
 187                 cur_z += dz;
 188         }
 189
 190         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 191                 (*i)->check_slope();
 192
 193         update_wrap();
 194 }
 195
 196 void Manipulator::cancel()
 197 {
 198         if(!mode)
 199                 return;
 200         mode = NONE;
 201
 202         wrap_pos = center;
 203         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 204         {
 205                 i->track->set_position(Point(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z));
 206                 i->track->set_rotation(i->rot);
 207         }
 208
 209         for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 210                 (*i)->check_slope();
 211
 212         angle = 0;
 213         wrap_rot = 0;
 214
 215         signal_done.emit(false);
 216 }
 217
 218 void Manipulator::button_press(int, int, float, float, unsigned btn)
 219 {
 220         if(btn==3)
 221                 cancel();
 222         else if(mode)
 223         {
 224                 mode = NONE;
 225                 update_wrap();
 226                 angle = 0;
 227
 228                 for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 229                         for(vector<MTrack>::iterator j=tracks.begin(); j!=tracks.end(); ++j)
 230                                 j->track->break_link(**i);
 231
 232                 const set<Track *> &ltracks = designer.get_layout()->get_tracks();
 233                 for(set<Track *>::const_iterator i=ltracks.begin(); i!=ltracks.end(); ++i)
 234                 {
 235                         bool ok = true;
 236                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && ok); ++j)
 237                                 ok = (j->track!=*i);
 238                         if(!ok) continue;
 239
 240                         for(vector<MTrack>::iterator j=tracks.begin(); j!=tracks.end(); ++j)
 241                                 j->track->snap_to(**i, true);
 242                 }
 243
 244                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 245                         i->rot = i->track->get_rotation();
 246
 247                 update_neighbors();
 248
 249                 signal_done.emit(true);
 250         }
 251 }
 252
 253 void Manipulator::pointer_motion(int, int y, float gx, float gy)
 254 {
 255         pointer_y = y;
 256         gpointer = Point(gx, gy, 0);
 257
 258         if(mode==MOVE)
 259         {
 260                 Point delta(gpointer.x-move_origin.x, gpointer.y-move_origin.y, 0);
 261
 262                 wrap_pos = Point(center.x+delta.x, center.y+delta.y, center.z);
 263                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 264                 {
 265                         i->track->set_position(Point(wrap_pos.x+i->pos.x, wrap_pos.y+i->pos.y, wrap_pos.z+i->pos.z));
 266                         i->track->set_rotation(i->rot);
 267                 }
 268
 269                 const set<Track *> &ltracks = designer.get_layout()->get_tracks();
 270                 MTrack *snapped = 0;
 271                 for(set<Track *>::const_iterator i=ltracks.begin(); (i!=ltracks.end() && !snapped); ++i)
 272                 {
 273                         bool ok = true;
 274                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && ok); ++j)
 275                                 ok = (j->track!=*i);
 276                         if(!ok) continue;
 277
 278                         for(vector<MTrack>::iterator j=tracks.begin(); (j!=tracks.end() && !snapped); ++j)
 279                                 if(j->track->snap_to(**i, false))
 280                                         snapped = &*j;
 281                 }
 282
 283                 if(snapped)
 284                 {
 285                         float da = snapped->track->get_rotation()-snapped->rot;
 286                         float c = cos(da);
 287                         float s = sin(da);
 288                         const Point &sp = snapped->track->get_position();
 289                         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 290                         {
 291                                 if(&*i==snapped)
 292                                         continue;
 293
 294                                 Point dp(i->pos.x-snapped->pos.x, i->pos.y-snapped->pos.y, 0);
 295                                 i->track->set_position(Point(sp.x+c*dp.x-s*dp.y, sp.y+s*dp.x+c*dp.y, sp.z));
 296                                 i->track->set_rotation(i->rot+da);
 297                         }
 298                 }
 299         }
 300         else if(mode==ROTATE)
 301         {
 302                 float a = atan2(gpointer.y-center.y, gpointer.x-center.x);
 303                 angle += a-rot_origin;
 304                 rot_origin = a;
 305
 306                 wrap_rot = angle;
 307                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 308                 {
 309                         float c = cos(angle);
 310                         float s = sin(angle);
 311                         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));
 312                         i->track->set_rotation(angle+i->rot);
 313                 }
 314         }
 315         else if(mode==ELEVATE)
 316         {
 317                 float dz = (y-elev_origin)/1000.;
 318
 319                 signal_status.emit(format("Elevation: %+.0fmm (%.0fmm)", dz*1000, (center.z+dz)*1000));
 320
 321                 wrap_pos.z = center.z+dz;
 322                 for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 323                         i->track->set_position(Point(center.x+i->pos.x, center.y+i->pos.y, center.z+i->pos.z+dz));
 324
 325                 for(set<Track *>::iterator i=neighbors.begin(); i!=neighbors.end(); ++i)
 326                         (*i)->check_slope();
 327         }
 328 }
 329
 330 void Manipulator::render()
 331 {
 332         glPushMatrix();
 333         glTranslatef(wrap_pos.x, wrap_pos.y, wrap_pos.z);
 334         glRotatef(wrap_rot*180/M_PI, 0, 0, 1);
 335
 336         glLineWidth(2);
 337         glColor4f(0, 1, 0, 0.5);
 338         for(list<TrackWrap>::iterator i=wrap.begin(); i!=wrap.end(); ++i)
 339         {
 340                 glPushMatrix();
 341                 glTranslatef(i->pos.x, i->pos.y, i->pos.z);
 342                 glRotatef(i->rot*180/M_PI, 0, 0, 1);
 343
 344                 glBegin(GL_LINE_LOOP);
 345                 glVertex2f(-i->width/2, -i->height/2);
 346                 glVertex2f(i->width/2, -i->height/2);
 347                 glVertex2f(i->width/2, i->height/2);
 348                 glVertex2f(-i->width/2, i->height/2);
 349                 glEnd();
 350
 351                 glPopMatrix();
 352         }
 353
 354         glPopMatrix();
 355 }
 356
 357 void Manipulator::selection_changed()
 358 {
 359         if(mode)
 360                 cancel();
 361
 362         tracks.clear();
 363         const set<Track *> &stracks = selection.get_tracks();
 364         tracks.insert(tracks.end(), stracks.begin(), stracks.end());
 365
 366         update_neighbors();
 367         update_wrap();
 368 }
 369
 370 void Manipulator::update_wrap()
 371 {
 372         wrap.clear();
 373         float min_x = 0, max_x = 0;
 374         float min_y = 0, max_y = 0;
 375         float min_z = 0;
 376         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 377         {
 378                 Track3D &t3d = designer.get_layout_3d()->get_track(*i->track);
 379
 380                 TrackWrap tw;
 381                 float min_area = 100;
 382                 for(float a=0; a<M_PI; a+=0.01)
 383                 {
 384                         Point minp, maxp;
 385                         t3d.get_bounds(a, minp, maxp);
 386                         float area = (maxp.x-minp.x)*(maxp.y-minp.y);
 387                         if(area<min_area)
 388                         {
 389                                 float c = cos(a);
 390                                 float s = sin(a);
 391                                 float x = (minp.x+maxp.x)/2;
 392                                 float y = (minp.y+maxp.y)/2;
 393                                 tw.pos = Point(c*x-s*y, s*x+c*y, minp.z);
 394                                 tw.rot = a;
 395                                 tw.width = maxp.x-minp.x+0.01;
 396                                 tw.height = maxp.y-minp.y+0.01;
 397
 398                                 min_area = area;
 399                         }
 400                 }
 401
 402                 if(i==tracks.begin())
 403                 {
 404                         min_x = max_x = tw.pos.x;
 405                         min_y = max_y = tw.pos.y;
 406                         min_z = tw.pos.z;
 407                 }
 408                 else
 409                 {
 410                         min_x = min(min_x, tw.pos.x);
 411                         max_x = max(max_x, tw.pos.x);
 412                         min_y = min(min_y, tw.pos.y);
 413                         max_y = max(max_y, tw.pos.y);
 414                         min_z = min(min_z, tw.pos.z);
 415                 }
 416                 wrap.push_back(tw);
 417         }
 418
 419         center = Point((min_x+max_x)/2, (min_y+max_y)/2, min_z);
 420         wrap_pos = center;
 421         wrap_rot = 0;
 422         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 423         {
 424                 const Point &tp = i->track->get_position();
 425                 i->pos = Point(tp.x-center.x, tp.y-center.y, tp.z-center.z);
 426         }
 427         for(list<TrackWrap>::iterator i=wrap.begin(); i!=wrap.end(); ++i)
 428         {
 429                 i->pos.x -= center.x;
 430                 i->pos.y -= center.y;
 431                 i->pos.z -= center.z;
 432         }
 433 }
 434
 435 void Manipulator::update_neighbors()
 436 {
 437         neighbors.clear();
 438         for(vector<MTrack>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 439         {
 440                 const vector<Track *> &links = i->track->get_links();
 441                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
 442                 {
 443                         if(!*j)
 444                                 continue;
 445                         if(neighbors.count(*j))
 446                                 continue;
 447
 448                         bool ok = true;
 449                         for(vector<MTrack>::iterator k=tracks.begin(); (k!=tracks.end() && ok); ++k)
 450                                 ok = (k->track!=*j);
 451
 452                         if(ok)
 453                                 neighbors.insert(*j);
 454                 }
 455         }
 456 }
 457
 458 void Manipulator::set_slope(TrackOrder &track, float z, float dz)
 459 {
 460         const Point &p = track.track->get_position();
 461         if(track.rev)
 462         {
 463                 track.track->set_position(Point(p.x, p.y, z+dz));
 464                 track.track->set_slope(-dz);
 465         }
 466         else
 467         {
 468                 track.track->set_position(Point(p.x, p.y, z));
 469                 track.track->set_slope(dz);
 470         }
 471 }
 472
 473 Manipulator::MTrack::MTrack(Track *t):
 474         track(t),
 475         pos(track->get_position()),
 476         rot(track->get_rotation())
 477 { }