org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/controlpoint/PipingRules.java

   1 package org.simantics.plant3d.scenegraph.controlpoint;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.HashMap;
   6 import java.util.List;
   7 import java.util.Map;
   8
   9 import javax.vecmath.Point3d;
  10 import javax.vecmath.Quat4d;
  11 import javax.vecmath.Vector3d;
  12
  13 import org.simantics.g3d.math.MathTools;
  14 import org.simantics.plant3d.scenegraph.InlineComponent;
  15 import org.simantics.plant3d.scenegraph.Nozzle;
  16 import org.simantics.plant3d.scenegraph.P3DRootNode;
  17 import org.simantics.plant3d.scenegraph.PipeRun;
  18 import org.simantics.plant3d.scenegraph.PipelineComponent;
  19 import org.simantics.plant3d.scenegraph.TurnComponent;
  20 import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint.Direction;
  21 import org.simantics.plant3d.utils.ComponentUtils;
  22 import org.simantics.utils.ui.ErrorLogger;
  23
  24 public class PipingRules {
  25         private static final boolean DEBUG = false;
  26         private static final boolean DUMMY = false;
  27
  28         private static double MIN_TURN_ANGLE = 0.001; // Threshold for removing turn components.
  29         private static double ALLOWED_OFFSET = 0.001; // Allowed offset for directed path legs
  30
  31         private static final int REMOVE_NONE = 0;
  32         private static final int REMOVE_START = 1;
  33         private static final int REMOVE_END = 2;
  34         private static final int REMOVE_BOTH = 3;
  35
  36
  37         private enum PathLegUpdateType {
  38                 NONE, PREV, NEXT, PREV_S, NEXT_S
  39         };
  40
  41         private static boolean enabled = true;
  42         private static boolean updating = false;
  43         private static boolean allowInsertRemove = true;
  44         private static boolean triedIR = false;
  45
  46
  47         private static List<PipeControlPoint> requestUpdates = new ArrayList<PipeControlPoint>();
  48         private static List<PipeControlPoint> currentUpdates = new ArrayList<PipeControlPoint>();
  49
  50         private static Object updateMutex = new Object();
  51         private static Object ruleMutex = new Object();
  52
  53         public static void requestUpdate(PipeControlPoint pcp) {
  54             if (!PipingRules.enabled)
  55                 return;
  56                 if (DEBUG) System.out.println("PipingRules request " + pcp);
  57                 synchronized (updateMutex) {
  58                         if (!requestUpdates.contains(pcp))
  59                                 requestUpdates.add(pcp);
  60                 }
  61         }
  62
  63         public static boolean update() throws Exception {
  64             if (!PipingRules.enabled)
  65                 return false;
  66
  67                 if (requestUpdates.size() == 0)
  68                         return false;
  69
  70                 List<PipeControlPoint> temp = new ArrayList<PipeControlPoint>(requestUpdates.size());
  71                 synchronized(updateMutex) {
  72                         temp.addAll(requestUpdates);
  73                         requestUpdates.clear();
  74                 }
  75                 synchronized (ruleMutex) {
  76                         currentUpdates.clear();
  77                         currentUpdates.addAll(temp);
  78                         // TODO : we should remove already processed control points from currentUpdates after each _positionUpdate call.
  79                         for (PipeControlPoint pcp : currentUpdates)
  80                                 _positionUpdate(pcp, true);
  81                         currentUpdates.clear();
  82                 }
  83                 synchronized(updateMutex) {
  84                         requestUpdates.removeAll(temp);
  85                 }
  86
  87                 return true;
  88         }
  89
  90         public static boolean positionUpdate(PipeControlPoint pcp) throws Exception {
  91
  92                 return positionUpdate(pcp, true);
  93         }
  94
  95         public static boolean positionUpdate(PipeControlPoint pcp, boolean allowIR) throws Exception {
  96                 synchronized (ruleMutex) {
  97                         currentUpdates.add(pcp);
  98                         boolean b = _positionUpdate(pcp, allowIR);
  99                         currentUpdates.clear();
 100                         return b;
 101                 }
 102
 103         }
 104
 105         private static boolean _positionUpdate(PipeControlPoint pcp, boolean allowIR) throws Exception {
 106                 if (updating || !enabled)
 107                         return true;
 108                 if (pcp.getPipeRun() == null)
 109                         return false;
 110                 try {
 111                         if (DEBUG) System.out.println("PipingRules " + pcp);
 112                         updating = true;
 113                         allowInsertRemove = allowIR;
 114                         triedIR = false;
 115                         validate(pcp.getPipeRun());
 116                         if (pcp.isPathLegEnd()) {
 117                                 updatePathLegEndControlPoint(pcp); // FIXME: Rules won't work properly, if they are not run twice.
 118                                 updatePathLegEndControlPoint(pcp);
 119                         } else {
 120                                 updateInlineControlPoint(pcp);
 121                                 updateInlineControlPoint(pcp);
 122                         }
 123                         validate(pcp.getPipeRun());
 124                         if (!allowInsertRemove)
 125                                 return !triedIR;
 126                         return true;
 127                 } finally {
 128                         updating = false;
 129 //                      System.out.println("PipingRules done " + pcp);
 130                 }
 131         }
 132
 133         public static void setEnabled(boolean enabled) {
 134                 PipingRules.enabled = enabled;
 135                 if(!enabled)
 136                         currentUpdates.clear();
 137         }
 138
 139         public static boolean isEnabled() {
 140                 return enabled;
 141         }
 142
 143 //      private void commit() {
 144 //              root.getNodeMap().commit();
 145 //      }
 146
 147         public static class ExpandIterInfo {
 148                 // these two are turn control points
 149                 private PipeControlPoint start;
 150                 private PipeControlPoint end;
 151                 private int type;
 152
 153                 public ExpandIterInfo() {
 154
 155                 }
 156
 157                 public ExpandIterInfo(PipeControlPoint tcp, int type) {
 158                         if (type == REMOVE_START)
 159                                 start = tcp;
 160                         else
 161                                 end = tcp;
 162                         this.type = type;
 163                 }
 164
 165                 public ExpandIterInfo(PipeControlPoint start, PipeControlPoint end) {
 166                         this.start = start;
 167                         this.end = end;
 168                         this.type = REMOVE_BOTH;
 169                 }
 170
 171                 public PipeControlPoint getEnd() {
 172                         return end;
 173                 }
 174
 175                 public void setEnd(PipeControlPoint end) {
 176                         this.end = end;
 177                 }
 178
 179                 public PipeControlPoint getStart() {
 180                         return start;
 181                 }
 182
 183                 public void setStart(PipeControlPoint start) {
 184                         this.start = start;
 185                 }
 186
 187                 public int getType() {
 188                         return type;
 189                 }
 190
 191                 public void setType(int type) {
 192                         this.type = type;
 193                 }
 194
 195         }
 196
 197         private static void updatePathLegEndControlPoint(PipeControlPoint pcp) throws Exception {
 198                 if (DEBUG)
 199                         System.out.println("PipingRules.updatePathLegEndControlPoint() " + pcp);
 200                 if (pcp.getNext() != null) {
 201                         updatePathLegNext(pcp, pcp, PathLegUpdateType.NEXT_S);
 202                 }
 203                 if (pcp.getPrevious() != null) {
 204                         updatePathLegPrev(pcp, pcp, PathLegUpdateType.PREV_S);
 205                 }
 206
 207         }
 208
 209         private static void updateInlineControlPoint(PipeControlPoint pcp) throws Exception {
 210                 if (DEBUG)
 211                         System.out.println("PipingRules.updateInlineControlPoint() " + pcp);
 212                 PipeControlPoint start = pcp.findPreviousEnd();
 213                 updatePathLegNext(start, pcp, PathLegUpdateType.NONE);
 214         }
 215
 216         private static PipeControlPoint insertElbow(PipeControlPoint pcp1, PipeControlPoint pcp2, Vector3d pos) throws Exception{
 217                 if (DEBUG)
 218                         System.out.println("PipingRules.insertElbow() " + pcp1 + " " + pcp2 + " " + pos);
 219                 if (pcp1.getNext() == pcp2 && pcp2.getPrevious() == pcp1) {
 220
 221                 } else if (pcp1.getNext() == pcp2 && pcp1.isDualInline() && pcp2.getPrevious() == pcp1.getDualSub()) {
 222                         pcp1 = pcp1.getDualSub();
 223                 } else if (pcp1.getPrevious() == pcp2 && pcp2.getNext() == pcp1) {
 224                         PipeControlPoint t = pcp1;
 225                         pcp1 = pcp2;
 226                         pcp2 = t;
 227                 } else if (pcp2.isDualInline() && pcp1.getPrevious() == pcp2.getDualSub() && pcp2.getNext() == pcp1) {
 228                         PipeControlPoint t = pcp1;
 229                         pcp1 = pcp2.getDualSub();
 230                         pcp2 = t;
 231                 } else {
 232                         throw new RuntimeException();
 233                 }
 234                 TurnComponent elbow = ComponentUtils.createTurn((P3DRootNode)pcp1.getRootNode());
 235                 PipeControlPoint pcp = elbow.getControlPoint();
 236                 if (pcp1.isDualInline())
 237                         pcp1 = pcp1.getDualSub();
 238                 String name = pcp1.getPipeRun().getUniqueName("Elbow");
 239                 elbow.setName(name);
 240                 pcp1.getPipeRun().addChild(elbow);
 241
 242                 pcp.insert(pcp1, pcp2);
 243
 244                 pcp.setWorldPosition(pos);
 245                 validate(pcp.getPipeRun());
 246                 return pcp;
 247         }
 248
 249         private static PipeControlPoint insertStraight(PipeControlPoint pcp1, PipeControlPoint pcp2, Vector3d pos, double length) throws Exception {
 250                 if (DEBUG)
 251                         System.out.println("PipingRules.insertStraight() " + pcp1 + " " + pcp2 + " " + pos);
 252                 if (pcp1.getNext() == pcp2 && pcp2.getPrevious() == pcp1) {
 253
 254                 } else if (pcp1.getNext() == pcp2 && pcp1.isDualInline() && pcp2.getPrevious() == pcp1.getDualSub()) {
 255                         pcp1 = pcp1.getDualSub();
 256                 } else if (pcp1.getPrevious() == pcp2 && pcp2.getNext() == pcp1) {
 257                         PipeControlPoint t = pcp1;
 258                         pcp1 = pcp2;
 259                         pcp2 = t;
 260                 } else if (pcp2.isDualInline() && pcp1.getPrevious() == pcp2.getDualSub() && pcp2.getNext() == pcp1) {
 261                         PipeControlPoint t = pcp1;
 262                         pcp1 = pcp2.getDualSub();
 263                         pcp2 = t;
 264                 } else {
 265                         throw new RuntimeException();
 266                 }
 267                 InlineComponent component = ComponentUtils.createStraight((P3DRootNode)pcp1.getRootNode());
 268                 PipeControlPoint scp = component.getControlPoint();
 269                 if (pcp1.isDualInline())
 270                         pcp1 = pcp1.getDualSub();
 271                 String name = pcp1.getPipeRun().getUniqueName("Pipe");
 272                 component.setName(name);
 273                 pcp1.getPipeRun().addChild(component);
 274
 275                 scp.insert(pcp1, pcp2);
 276
 277                 scp.setWorldPosition(pos);
 278                 scp.setLength(length);
 279                 validate(scp.getPipeRun());
 280                 return scp;
 281         }
 282
 283         private static PipeControlPoint insertStraight(PipeControlPoint pcp, Direction direction , Vector3d pos, double length) throws Exception {
 284                 if (DEBUG)
 285                         System.out.println("PipingRules.insertStraight() " + pcp + " " + direction + " " + pos);
 286
 287                 InlineComponent component = ComponentUtils.createStraight((P3DRootNode)pcp.getRootNode());
 288                 PipeControlPoint scp = component.getControlPoint();
 289                 if (pcp.isDualInline() && direction == Direction.NEXT)
 290                         pcp = pcp.getDualSub();
 291                 String name = pcp.getPipeRun().getUniqueName("Pipe");
 292                 component.setName(name);
 293                 pcp.getPipeRun().addChild(component);
 294
 295                 scp.insert(pcp,direction);
 296
 297                 scp.setWorldPosition(pos);
 298                 scp.setLength(length);
 299                 validate(scp.getPipeRun());
 300                 return scp;
 301         }
 302
 303         private static void updatePathLegNext(PipeControlPoint start, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 304
 305                 UpdateStruct2 us = createUS(start, Direction.NEXT, 0, new ArrayList<ExpandIterInfo>(), updated);
 306                 if (lengthChange == PathLegUpdateType.NONE) {
 307                         if (start.equals(updated))
 308                                 lengthChange = PathLegUpdateType.NEXT;
 309                         else if (us.end.equals(updated))
 310                                 lengthChange = PathLegUpdateType.PREV;
 311                 }
 312                 if (us == null) {
 313                     System.out.println("Null update struct " + start);
 314                     return;
 315                 }
 316                 updatePathLeg(us, lengthChange);
 317         }
 318
 319         private static void updatePathLegPrev(PipeControlPoint start, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 320                 // TODO: this method is not symmetric with updatePathLegNext, which may alter lengthChange parameter?
 321                 UpdateStruct2 us = createUS(start, Direction.PREVIOUS, 0, new ArrayList<ExpandIterInfo>(), updated);
 322 //        if (lengthChange == PathLegUpdateType.NONE) {
 323 //            if (start.equals(updated))
 324 //                lengthChange = PathLegUpdateType.NEXT;
 325 //            else if (us.end.equals(updated))
 326 //                lengthChange = PathLegUpdateType.PREV;
 327 //        }
 328                 if (us == null) {
 329             System.out.println("Null update struct " + start);
 330             return;
 331         }
 332                 updatePathLeg(us, lengthChange);
 333         }
 334
 335         private static class UpdateStruct2 {
 336                 public PipeControlPoint start;
 337                 public Vector3d startPoint;
 338                 public ArrayList<PipeControlPoint> list;
 339                 public PipeControlPoint end;
 340                 public Vector3d endPoint;
 341                 public Vector3d dir;
 342                 public Vector3d offset;
 343                 public boolean hasOffsets;
 344                 public int iter;
 345                 public boolean reversed;
 346                 public ArrayList<ExpandIterInfo> toRemove;
 347                 public PipeControlPoint updated;
 348
 349                 public UpdateStruct2(PipeControlPoint start, Vector3d startPoint, ArrayList<PipeControlPoint> list, PipeControlPoint end, Vector3d endPoint, Vector3d dir, Vector3d offset, boolean hasOffsets, int iter, boolean reversed, ArrayList<ExpandIterInfo> toRemove, PipeControlPoint updated) {
 350                         if (start == null || end == null)
 351                                 throw new NullPointerException();
 352                         this.start = start;
 353                         this.startPoint = startPoint;
 354                         this.list = list;
 355                         this.end = end;
 356                         this.endPoint = endPoint;
 357                         this.dir = dir;
 358                         this.offset = offset;
 359                         this.hasOffsets = hasOffsets;
 360                         this.iter = iter;
 361                         this.reversed = reversed;
 362                         this.toRemove = toRemove;
 363                         this.updated = updated;
 364
 365                         if (!MathTools.isValid(startPoint) ||
 366                                 !MathTools.isValid(endPoint) ||
 367                                 !MathTools.isValid(dir)) {
 368                                 throw new RuntimeException();
 369                         }
 370                 }
 371
 372                 public String toString() {
 373                         return start + " " + end+ " " + dir + " " + hasOffsets + " " + offset + " " + iter + " " + toRemove.size();
 374                 }
 375
 376         }
 377
 378         @SuppressWarnings("unused")
 379         private static boolean calculateOffset(Vector3d startPoint, Vector3d endPoint, ArrayList<PipeControlPoint> list, Vector3d dir, Vector3d offset) {
 380                 boolean hasOffsets = false;
 381                 List<PipeControlPoint> offsets = new ArrayList<PipeControlPoint>(list.size());
 382                 for (PipeControlPoint icp : list) {
 383                         if (icp.isOffset()) {
 384                                 offsets.add(icp);
 385                         } else if (icp.isDualSub())
 386                                 ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
 387                 }
 388                 if (offsets.size() == 0) {
 389                         dir.set(endPoint);
 390                         dir.sub(startPoint);
 391                         double l = dir.lengthSquared();
 392                         if (l > MathTools.NEAR_ZERO)
 393                                 dir.scale(1.0/Math.sqrt(l));
 394                         offset.set(0.0, 0.0, 0.0);
 395                         return false;
 396                 } else {
 397                         Vector3d sp = new Vector3d(startPoint);
 398                         Point3d ep = new Point3d(endPoint);
 399                         dir.set(ep);
 400                         dir.sub(sp);
 401                         double l = dir.lengthSquared();
 402                         if (l > MathTools.NEAR_ZERO)
 403                                 dir.scale(1.0/Math.sqrt(l));
 404                         int iter = 100;
 405                         while (iter >= 0) {
 406                                 iter--;
 407                                 offset.set(0.0, 0.0, 0.0);
 408
 409                                 for (PipeControlPoint icp : offsets) {
 410                                         Vector3d v = icp.getSizeChangeOffsetVector(dir);
 411                                         offset.add(v);
 412                                 }
 413                                 Point3d nep = new Point3d(endPoint);
 414                                 nep.sub(offset);
 415                                 if (nep.distance(ep) < 0.0000000001) {
 416                                         break;
 417                                 }
 418                                 ep = nep;
 419                                 dir.set(ep);
 420                                 dir.sub(sp);
 421                                 l = dir.lengthSquared();
 422                                 if (l > MathTools.NEAR_ZERO)
 423                                         dir.scale(1.0/Math.sqrt(l));
 424                         }
 425                         hasOffsets = true;
 426                 }
 427
 428                 if (DEBUG && hasOffsets)
 429                         System.out.println("calcOffset s:"+ startPoint + " e:" + endPoint + " d:" + dir + " o:"+offset) ;
 430                 return hasOffsets;
 431         }
 432
 433         private static UpdateStruct2 createUS(PipeControlPoint start, Direction direction, int iter, ArrayList<ExpandIterInfo> toRemove, PipeControlPoint updated) {
 434                 ArrayList<PipeControlPoint> list = new ArrayList<PipeControlPoint>();
 435                 PipeControlPoint end = null;
 436                 if (direction == Direction.NEXT) {
 437                         end = start.findNextEnd(list);
 438                 } else {
 439                         ArrayList<PipeControlPoint> prevList = new ArrayList<PipeControlPoint>();
 440                         PipeControlPoint tend = start.findPreviousEnd(prevList);
 441                         for (PipeControlPoint icp : prevList) {
 442                                 if (icp.isDualSub()) {
 443                                         list.add(0, icp.getParentPoint());
 444                                 } else {
 445                                         list.add(0, icp);
 446                                 }
 447                         }
 448                         end = start;
 449                         start = tend;
 450                 }
 451                 if (start == end)
 452                         return null;
 453                 boolean hasOffsets = false;
 454                 Vector3d offset = new Vector3d();
 455                 Vector3d startPoint = start.getWorldPosition();
 456                 Vector3d endPoint = end.getWorldPosition();
 457                 Vector3d dir = new Vector3d();
 458                 hasOffsets = calculateOffset(startPoint, endPoint, list, dir, offset);
 459                 return new UpdateStruct2(start, startPoint, list, end, endPoint, dir, offset, hasOffsets, iter, direction == Direction.PREVIOUS, toRemove, updated);
 460         }
 461
 462         private static boolean asDirected(PipeControlPoint pcp, Direction direction) {
 463                 if (pcp.isDirected())
 464                         return true;
 465                 if (pcp.asFixedAngle()) {
 466                         if (!pcp._getReversed())
 467                                 return direction == Direction.NEXT;
 468                         else
 469                                 return direction == Direction.PREVIOUS;
 470                 }
 471                 return false;
 472         }
 473
 474         private static Vector3d direction(PipeControlPoint pcp, Direction direction) {
 475                 return pcp.getDirection(direction);
 476         }
 477
 478         private static void updatePathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 479                 int directed = 0;
 480                 if (asDirected(u.start, Direction.NEXT))
 481                         directed++;
 482                 if (asDirected(u.end, Direction.PREVIOUS))
 483                         directed++;
 484                 switch (directed) {
 485                 case 0:
 486                         updateFreePathLeg(u, lengthChange);
 487                         break;
 488                 case 1:
 489                         updateDirectedPathLeg(u, lengthChange);
 490                         break;
 491                 case 2:
 492                         updateDualDirectedPathLeg(u, lengthChange);
 493                         break;
 494                 }
 495
 496         }
 497
 498         private static void updateFreePathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 499                 if (DEBUG)
 500                         System.out.println("PipingRules.updateFreePipeRun " + u + " " + lengthChange);
 501                 checkExpandPathLeg(u, lengthChange);
 502                 if (u.start.isInline() || u.end.isInline() || u.start.asFixedAngle()|| u.end.asFixedAngle())
 503                         processPathLeg(u, true, false);
 504         }
 505
 506         private static void updateInlineControlPoints(UpdateStruct2 u, boolean checkSizes) throws Exception{
 507                 if (DEBUG)
 508                         System.out.println("PipingRules.updateInlineControlPoints() " + u);
 509
 510                 Vector3d start = new Vector3d(u.startPoint);
 511                 Vector3d end = new Vector3d(u.endPoint);
 512
 513                 if (checkSizes) {
 514                         // create offsets for leg ends.
 515                         MathTools.mad(start, u.dir, u.start.getInlineLength());
 516                         MathTools.mad(end, u.dir, -u.end.getInlineLength());
 517                 }
 518
 519                 boolean recalcline = false;
 520                 if (!u.hasOffsets) {
 521
 522
 523                         for (PipeControlPoint icp : u.list) {
 524                                 updateInlineControlPoint(icp, start, end, u.dir);
 525
 526                                 if (icp.isOffset()) {
 527                                         // TODO : offset vector is already calculated and should be cached
 528                                         Vector3d off = icp.getSizeChangeOffsetVector(u.dir);
 529                                         updateOffsetPoint(icp, off);
 530                                 }
 531                         }
 532                         if (!checkSizes)
 533                                 return;
 534
 535                         ArrayList<PipeControlPoint> pathLegPoints = new ArrayList<PipeControlPoint>();
 536                         pathLegPoints.add(u.start);
 537                         for (PipeControlPoint icp : u.list) {
 538                                 // updateInlineControlPoint(icp, u.startPoint,
 539                                 // u.endPoint,u.dir);
 540                                 updateBranchControlPointBranches(icp);
 541                                 pathLegPoints.add(icp);
 542                         }
 543                         pathLegPoints.add(u.end);
 544
 545                         // TODO : values can be cached in the loop
 546                         for (int i = 0; i < pathLegPoints.size(); i++) {
 547                                 PipeControlPoint icp = pathLegPoints.get(i);
 548
 549                                 PipeControlPoint prev = i > 0 ? pathLegPoints.get(i - 1) : null;
 550                                 PipeControlPoint next = i < pathLegPoints.size() - 1 ? pathLegPoints.get(i + 1) : null;
 551
 552                                 if (icp.isVariableLength()) {
 553                                         if (prev != null && next != null) {
 554
 555                                                 recalcline = recalcline | updateVariableLength(icp,  prev, next);
 556
 557                                         } else {
 558                                                 // this is variable length component at the end of the
 559                                                 // piperun.
 560                                                 // the problem is that we want to keep unconnected end
 561                                                 // of the component in the same
 562                                                 // place, but center of the component must be moved.
 563                                                 updateVariableLengthEnd(icp, prev != null ? prev : next);
 564                                         }
 565
 566
 567                                 } else if (prev != null && !prev.isVariableLength()) {
 568                                         // If this and previous control point are not variable
 569                                         // length pcps, we'll have to check if there is no empty
 570                                         // space between them.
 571                                         // I there is, we'll have to create new variable length
 572                                         // component between them.
 573                                         recalcline = recalcline | possibleVaribleLengthInsert(icp, prev);
 574                                 }
 575                         }
 576                 } else { // with offset
 577                         Vector3d sp = new Vector3d(start);
 578                         Vector3d ep = new Vector3d(end);
 579                         ep.sub(u.offset);
 580
 581                         ArrayList<PipeControlPoint> pathLegPoints = new ArrayList<PipeControlPoint>();
 582                         pathLegPoints.add(u.start);
 583
 584                         for (PipeControlPoint icp : u.list) {
 585                                 updateInlineControlPoint(icp, sp, ep, u.dir);
 586                                 updateBranchControlPointBranches(icp);
 587                                 pathLegPoints.add(icp);
 588                                 if (icp.isOffset()) {
 589                                         // TODO : offset vector is already calculated and should be
 590                                         // cached
 591                                         Vector3d  offset = icp.getSizeChangeOffsetVector(u.dir);
 592                                         updateOffsetPoint(icp, offset);
 593                                         sp.add(offset);
 594                                         ep.add(offset);
 595                                 }
 596                         }
 597                         pathLegPoints.add(u.end);
 598
 599                         if (!checkSizes)
 600                                 return;
 601
 602                         sp = new Vector3d(u.startPoint);
 603                         ep = new Vector3d(u.endPoint);
 604                         ep.sub(u.offset);
 605
 606                         for (int i = 0; i < pathLegPoints.size(); i++) {
 607                                 PipeControlPoint icp = pathLegPoints.get(i);
 608
 609                                 PipeControlPoint prev = i > 0 ? pathLegPoints.get(i - 1) : null;
 610                                 PipeControlPoint next = i < pathLegPoints.size() - 1 ? pathLegPoints.get(i + 1) : null;
 611
 612                                 if (prev != null && prev.isDualInline())
 613                                         prev = prev.getDualSub();
 614
 615
 616                                 if (icp.isVariableLength()) {
 617                                         if (prev != null && next != null) {
 618                                                 recalcline = recalcline | updateVariableLength(icp,  prev, next);
 619
 620                                         } else {
 621                                                 // this is variable length component at the end of the
 622                                                 // piperun.
 623                                                 // the problem is that we want to keep unconnected end
 624                                                 // of the component in the same
 625                                                 // place, but center of the component must be moved.
 626                                                 updateVariableLengthEnd(icp, prev != null ? prev : next);
 627                                         }
 628                                 } else if (prev != null && !prev.isVariableLength()) {
 629                                         // If this and previous control point are not variable
 630                                         // length pcps, we'll have to check if there is no empty
 631                                         // space between them.
 632                                         // I there is, we'll have to create new variable length
 633                                         // component between them.
 634                                         recalcline = recalcline | possibleVaribleLengthInsert(icp, prev);
 635                                 }
 636                                 if (icp.isOffset()) {
 637                                         // TODO : offset vector is already calculated and should be
 638                                         // cached
 639                                         Vector3d  offset = icp.getSizeChangeOffsetVector(u.dir);
 640                                         sp.add(offset);
 641                                         ep.add(offset);
 642                                 }
 643                         }
 644                 }
 645                 if (recalcline) {
 646                         u.list.clear();
 647                         u.start.findNextEnd(u.list);
 648                 }
 649         }
 650
 651         private static boolean updateVariableLength(PipeControlPoint icp, PipeControlPoint prev,  PipeControlPoint next) {
 652                 Vector3d prevPos = prev.getWorldPosition();
 653                 Vector3d nextPos = next.getWorldPosition();
 654
 655                 Vector3d dir = new Vector3d(nextPos);
 656                 dir.sub(prevPos);
 657                 double l = dir.lengthSquared(); // distance between
 658                                                                                 // control points
 659                                                                                 // (square)
 660                 double l2prev = prev.getInlineLength(); // distance
 661                                                                                                                                         // taken
 662                                                                                                                                         // by
 663                                                                                                                                         // components
 664                 double l2next = next.getInlineLength();
 665                 double l2 = l2prev + l2next;
 666                 double l2s = MathTools.square(l2);
 667                 if (l2s < l) { // check if there is enough space for
 668                                                 // variable length component.
 669                         // components fit
 670                         dir.normalize();
 671                         double length = Math.sqrt(l) - l2; // true length of
 672                                                                                                 // the variable
 673                                                                                                 // length
 674                                                                                                 // component
 675                         dir.scale(length * 0.5 + l2prev); // calculate
 676                                                                                                 // center
 677                                                                                                 // position of
 678                                                                                                 // the component
 679                         dir.add(prevPos);
 680                         icp.setWorldPosition(dir);
 681                         icp.setLength(length);
 682                         return false;
 683                 } else {
 684                         // components leave no space to the component and it
 685                         // must be removed
 686
 687                         if (icp.isDeletable()) {
 688                             if (!allowInsertRemove) {
 689                                 icp.setLength(0.0001);
 690                                 triedIR = true;
 691                                 return false;
 692                             }
 693                                 if (DEBUG)
 694                                         System.out.println("PipingRules.updateVariableLength removing " + icp);
 695                                 icp._remove();
 696                                 return true;
 697                         }
 698                         return false;
 699                 }
 700         }
 701
 702         private static boolean possibleVaribleLengthInsert(PipeControlPoint icp, PipeControlPoint prev) throws Exception{
 703                 Vector3d currentPos = icp.getWorldPosition();
 704                 Vector3d prevPos = prev.getWorldPosition();
 705                 Vector3d dir = new Vector3d(currentPos);
 706                 dir.sub(prevPos);
 707                 double l = dir.lengthSquared();
 708                 double l2prev = prev.getInlineLength();
 709                 double l2next = icp.getInlineLength();
 710                 double l2 = l2prev + l2next;
 711                 double l2s = l2 * l2;
 712                 if (l > l2s) {
 713                         if (allowInsertRemove) {
 714                                 dir.normalize();
 715                                 double length = Math.sqrt(l) - l2; // true length of the
 716                                                                                                         // variable length
 717                                                                                                         // component
 718                                 dir.scale(length * 0.5 + l2prev); // calculate center
 719                                                                                                         // position of the
 720                                                                                                         // component
 721                                 dir.add(prevPos);
 722                                 insertStraight(prev, icp, dir, length);
 723                                 return true;
 724                         } else {
 725                                 triedIR = true;
 726                         }
 727                 }
 728                 return false;
 729         }
 730
 731         private static void updateVariableLengthEnd(PipeControlPoint icp,  PipeControlPoint prev) {
 732                 Vector3d currentPos = icp.getWorldPosition();
 733                 Vector3d prevPos = prev.getWorldPosition();
 734
 735                 Vector3d dir = new Vector3d();
 736                 dir.sub(currentPos, prevPos);
 737
 738                 boolean simple = currentUpdates.contains(icp);
 739                 if (simple) {
 740                         // Update based on position -> adjust length
 741                         double currentLength = (dir.length() - prev.getInlineLength()) * 2.0;
 742                         icp.setLength(currentLength);
 743                 } else {
 744                         // Update based on neighbour movement -> adjust length and position, so that free end stays in place.
 745                         double currentLength = icp.getLength();
 746                         if (currentLength < MathTools.NEAR_ZERO) {
 747                                 currentLength = (dir.length() - prev.getInlineLength()) * 2.0;
 748                         }
 749
 750                         if (dir.lengthSquared() > MathTools.NEAR_ZERO)
 751                                 dir.normalize();
 752                         Point3d endPos = new Point3d(dir);
 753                         endPos.scale(currentLength * 0.5);
 754                         endPos.add(currentPos); // this is the free end of the component
 755
 756                         double offset = prev.getInlineLength();
 757                         Point3d beginPos = new Point3d(dir);
 758                         beginPos.scale(offset);
 759                         beginPos.add(prevPos); // this is the connected end of the component
 760
 761                         double l = beginPos.distance(endPos);
 762
 763                         if (Double.isNaN(l))
 764                                 System.out.println("Length for " + icp + " is NaN");
 765
 766                         dir.scale(l * 0.5);
 767                         beginPos.add(dir); // center position
 768
 769                         if (DEBUG)
 770                                 System.out.println("PipingRules.updateInlineControlPoints() setting variable length to " + l);
 771                         icp.setLength(l);
 772
 773                         icp.setWorldPosition(new Vector3d(beginPos));
 774                 }
 775         }
 776
 777         private static void ppNoOffset(UpdateStruct2 u) throws Exception {
 778                 if (DEBUG)
 779                         System.out.println("PipingRules.ppNoOffset() " + u);
 780                 Vector3d offset = new Vector3d();
 781                 if (u.hasOffsets) {
 782                         u.dir.normalize();
 783                         for (PipeControlPoint icp : u.list) {
 784                                 if (icp.isOffset()) {
 785                                         offset.add(icp.getSizeChangeOffsetVector(u.dir));
 786                                 } else if (icp.isDualSub())
 787                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
 788                         }
 789                 }
 790                 u.offset = offset;
 791                 checkExpandPathLeg(u, PathLegUpdateType.NONE);
 792         }
 793
 794         private static void ppNoDir(PipeControlPoint start, Vector3d startPoint, ArrayList<PipeControlPoint> list, PipeControlPoint end, Vector3d endPoint, boolean hasOffsets, int iter, boolean reversed, ArrayList<ExpandIterInfo> toRemove, PipeControlPoint updated) throws Exception {
 795                 if (DEBUG)
 796                         System.out.println("PipingRules.ppNoDir() " + start + " " + end + " " + iter + " " + toRemove.size());
 797                 // FIXME : extra loop (dir should be calculated here)
 798                 Vector3d dir = new Vector3d();
 799                 Vector3d offset = new Vector3d();
 800                 hasOffsets = calculateOffset(startPoint, endPoint, list, dir, offset);
 801                 ppNoOffset(new UpdateStruct2(start, startPoint, list, end, endPoint, dir, null, hasOffsets, iter, reversed, toRemove, updated));
 802         }
 803
 804         private static void checkExpandPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 805                 checkExpandPathLeg(u, lengthChange, u.updated.isInline() && u.updated.isOffset());
 806         }
 807
 808         private static void checkExpandPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange, boolean updateEnds) throws Exception {
 809                 if (DEBUG)
 810                         System.out.println("PipingRules.checkExpandPathLeg() " + u + " " + lengthChange);
 811                 if (lengthChange != PathLegUpdateType.NONE) {
 812                         // FIXME : turns cannot be checked before inline cps are updated,
 813                         // since their position affects calculation of turns
 814                         processPathLeg(u, updateEnds, false);
 815                         int type = checkTurns(u, lengthChange);
 816                         if (type == REMOVE_NONE) {
 817                                 processPathLeg(u, updateEnds, true);
 818                         } else {
 819                                 expandPathLeg(u, type);
 820                         }
 821                 } else {
 822                         processPathLeg(u, updateEnds, true);
 823                 }
 824         }
 825
 826         private static void updateDirectedPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 827                 if (DEBUG)
 828                         System.out.println("PipingRules.updateDirectedPipeRun() " + u + " " + lengthChange);
 829                 PipeControlPoint dcp;
 830                 PipeControlPoint other;
 831                 boolean canMoveOther = false;
 832                 boolean dcpStart = false;
 833                 boolean inlineEnd = false;
 834                 Vector3d position;
 835                 if (asDirected(u.start, Direction.NEXT)) {
 836                         dcp = u.start;
 837                         other = u.end;
 838                         position = u.startPoint;
 839                         dcpStart = true;
 840                         if (!u.reversed)
 841                                 canMoveOther = true;
 842                         inlineEnd = u.end.isInline();
 843
 844                 } else {
 845                         dcp = u.end;
 846                         other = u.start;
 847                         position = u.endPoint;
 848                         if (u.reversed)
 849                                 canMoveOther = true;
 850                         inlineEnd = u.start.isInline();
 851                 }
 852
 853                 Vector3d directedDirection = direction(dcp, dcpStart ? Direction.NEXT : Direction.PREVIOUS);
 854                 if (directedDirection == null) {
 855                         //updateTurnControlPointTurn(dcp, dcp.getPrevious(), dcp.getNext());
 856                         updateTurnControlPointTurn(dcp, null, null);
 857                         directedDirection = direction(dcp, dcpStart ? Direction.NEXT : Direction.PREVIOUS);
 858                         if (directedDirection == null) {
 859                                 return;
 860                         }
 861                 }
 862                 Point3d directedEndPoint = new Point3d(u.endPoint);
 863                 if (u.hasOffsets)
 864                         directedEndPoint.add(u.offset);
 865
 866                 double mu[] = new double[2];
 867
 868                 Vector3d closest;
 869                 Vector3d t = new Vector3d();
 870
 871                 if (dcpStart) {
 872                         closest = MathTools.closestPointOnStraight(directedEndPoint, u.startPoint, directedDirection, mu);
 873                         t.sub(closest, directedEndPoint);
 874                 } else {
 875                         closest = MathTools.closestPointOnStraight(u.startPoint, directedEndPoint, directedDirection, mu);
 876                         t.sub(closest, u.startPoint);
 877                 }
 878
 879                 double distance = t.length();
 880                 boolean aligned = (distance < ALLOWED_OFFSET);
 881                 if (aligned) {
 882                         if (u.start.isInline() || u.end.isInline() || u.start.asFixedAngle() || u.end.asFixedAngle())
 883                                 processPathLeg(u, true, false);
 884                         checkExpandPathLeg(u, lengthChange, inlineEnd);
 885
 886                 } else {
 887                         if (u.iter > 0) {
 888                                 backIter(u);
 889                         } else {
 890                                 PipeControlPoint nextToMoved;
 891
 892                                 if (u.list.size() > 0)
 893                                         if (dcpStart)
 894                                                 nextToMoved = u.list.get(0);
 895                                         else
 896                                                 nextToMoved = u.list.get(u.list.size() - 1);
 897                                 else if (dcpStart)
 898                                         nextToMoved = u.end;
 899                                 else
 900                                         nextToMoved = u.start;
 901                                 if (other.isVariableAngle()) {
 902
 903                                         // TODO calculate needed space from next run end.
 904                                     double space = spaceForTurn(other);
 905                                         if (mu[0] < space) {
 906                                                 if (dcpStart) {
 907                                                         closest.set(u.startPoint);
 908                                                 } else {
 909                                                         closest.set(u.endPoint);
 910                                                 }
 911                                                 Vector3d v = new Vector3d(directedDirection);
 912                                                 v.scale(space);
 913                                                 closest.add(v);
 914                                         }
 915
 916                                         if (canMoveOther) {
 917                                                 if (DEBUG)
 918                                                         System.out.println("PipingRules.updateDirectedPipeRun() moved end " + other + " to " + closest);
 919                                                 other.setWorldPosition(closest);
 920                                                 if (dcpStart) {
 921                                                         ppNoOffset(new UpdateStruct2(u.start, u.startPoint, u.list, u.end, new Vector3d(closest), directedDirection, null, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated));
 922                                                         if (u.end.getNext() != null)
 923                                                                 updatePathLegNext(u.end, u.updated, PathLegUpdateType.NEXT);
 924                                                 } else {
 925                                                         ppNoOffset(new UpdateStruct2(u.start, new Vector3d(closest), u.list, u.end, u.endPoint, directedDirection, null, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated));
 926                                                         if (u.start.getPrevious() != null)
 927                                                                 updatePathLegPrev(u.start, u.updated, PathLegUpdateType.PREV);
 928                                                 }
 929                                         } else {
 930                                                 // TODO : calculate needed space from next run end.
 931                                                 if (allowInsertRemove)
 932                                                         insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 933
 934                                                 else
 935                                                         triedIR = true;
 936                                         }
 937                                 } else if (other.isNonDirected() && other.getParentPoint() != null) {
 938                                         // FIXME : this code was for updating branches
 939                                         Vector3d bintersect = new Vector3d();
 940                                         PipeControlPoint bcp = other.getParentPoint();
 941                                         if (bcp != null && canMoveOther) {
 942                                                 Point3d bstart = new Point3d();
 943                                                 Point3d bend = new Point3d();
 944                                                 Vector3d bdir = new Vector3d();
 945                                                 bcp.getInlineControlPointEnds(bstart, bend, bdir);
 946                                                 Vector3d nintersect = new Vector3d();
 947
 948                                                 MathTools.intersectStraightStraight(position, directedDirection, bend, bdir, nintersect, bintersect, mu);
 949                                                 Vector3d dist = new Vector3d(nintersect);
 950                                                 dist.sub(bintersect);
 951                                                 canMoveOther = mu[1] > 0.0 && mu[1] < 1.0 && dist.lengthSquared() < 0.01;
 952                                         } else {
 953                                                 // TODO : endControlPoints are undirected: calculcate
 954                                                 // correct position for it
 955                                                 throw new UnsupportedOperationException("not implemented");
 956                                         }
 957                                         if (canMoveOther) {
 958                                                 if (DEBUG)
 959                                                         System.out.println("PipingRules.updateDirectedPipeRun() moved end " + other + " to " + bintersect);
 960                                                 // is required branch position is in possible range
 961                                                 bcp.setWorldPosition(bintersect);
 962                                                 if (dcpStart) {
 963                                                         checkExpandPathLeg(new UpdateStruct2(u.start, u.startPoint, u.list, u.end, new Vector3d(bintersect), directedDirection, u.offset, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated), lengthChange);
 964                                                 } else {
 965                                                         checkExpandPathLeg(new UpdateStruct2(u.start, new Vector3d(bintersect), u.list, u.end, u.endPoint, directedDirection, u.offset, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated), lengthChange);
 966                                                 }
 967                                         } else {
 968                                                 // branch cannot be moved into right position, new turn
 969                                                 // / elbow must be inserted
 970                                                 if (allowInsertRemove)
 971                                                         insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 972                                                 else
 973                                                         triedIR = true;
 974                                         }
 975
 976                                 } else { // assume that control point cannot be moved, but can
 977                                                         // be rotated
 978                                         if (allowInsertRemove)
 979                                                 insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 980                                         else
 981                                                 triedIR = true;
 982                                 }
 983                         }
 984                 }
 985
 986
 987         }
 988
 989         private static void updateDualDirectedPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 990                 if (DEBUG)
 991                         System.out.println("PipingRules.updateDualDirectedPipeRun() " + u + " " + lengthChange);
 992
 993                 PipeControlPoint dcp1 = u.start;
 994                 PipeControlPoint dcp2 = u.end;
 995                 Point3d position1 = new Point3d(u.startPoint);
 996                 Point3d position2 = new Point3d(u.endPoint);
 997                 Point3d position1offset = new Point3d(position1);
 998                 position1offset.sub(u.offset);
 999                 Point3d position2offset = new Point3d(position2);
1000                 position2offset.add(u.offset);
1001                 Vector3d dir1 = direction(dcp1, Direction.NEXT);
1002                 Vector3d dir2 = direction(dcp2, Direction.PREVIOUS);
1003                 Vector3d p1 = MathTools.closestPointOnStraight(position1offset, position2, dir2);
1004                 Vector3d p2 = MathTools.closestPointOnStraight(position2offset, position1, dir1);
1005                 double d1 = position1.distance(new Point3d(p1));
1006                 double d2 = position2.distance(new Point3d(p2));
1007
1008                 boolean aligned = (d1 < ALLOWED_OFFSET && d2 < ALLOWED_OFFSET);
1009                 if (aligned) {
1010                         processPathLeg(u);
1011                 } else {
1012                         if (u.iter > 0) {
1013                                 backIter(u);
1014                         } else if (allowInsertRemove){
1015                                 PipeControlPoint dcp;
1016                                 PipeControlPoint next;
1017                                 if (!u.reversed) {
1018                                         dcp = dcp1;
1019                                         if (u.list.size() > 0)
1020                                                 next = u.list.get(0);
1021                                         else
1022                                                 next = dcp2;
1023                                 } else {
1024                                         dcp = dcp2;
1025                                         if (u.list.size() > 0)
1026                                                 next = u.list.get(u.list.size() - 1);
1027                                         else
1028                                                 next = dcp1;
1029                                 }
1030
1031                                 p1 = dcp.getWorldPosition();
1032                                 Vector3d v = new Vector3d();
1033                                 if (!u.reversed)
1034                                         v.set(dir1);
1035                                 else
1036                                         v.set(dir2);
1037
1038                                 // Reserve space for 90 deg elbow
1039                                 double off = dcp1.getPipeRun().getTurnRadius();
1040                                 v.scale(off);
1041                                 p1.add(v);
1042
1043                                 if (!u.reversed)
1044                                         p2 = MathTools.closestPointOnStraight(new Point3d(p1), position2, dir2);
1045                                 else
1046                                         p2 = MathTools.closestPointOnStraight(new Point3d(p1), position1, dir1);
1047
1048                                 // By default, the elbows are placed next to each other, by using 90 deg angles.
1049                                 // If the distance between elbows is not enough, we must move the other elbow (and create more shallow angle elbows)
1050                                 if (MathTools.distance(p1, p2) < off*2.05) {
1051                                         p2.add(v);
1052                                 }
1053
1054                                 PipeControlPoint tcp1 = insertElbow(dcp, next, p1);
1055                                 PipeControlPoint tcp2 = insertElbow(tcp1, next, p2);
1056
1057                                 if (DEBUG)
1058                                         System.out.println("PipingRules.updateDualDirectedPipeRun() created two turns " + tcp1 + " " + tcp2);
1059
1060                                 if (!u.reversed) {
1061                                         Vector3d dd = new Vector3d(p2);
1062                                         dd.sub(p1);
1063                                         dir2.negate();
1064                                         updatePathLegNext(u.start, u.updated, PathLegUpdateType.NONE);
1065                                         updatePathLegNext(tcp1, u.updated, PathLegUpdateType.NONE);
1066                                         if (!u.reversed)
1067                                                 updatePathLegNext(tcp2, u.updated, PathLegUpdateType.NONE);
1068                                         else
1069                                                 updatePathLegPrev(tcp2, u.updated, PathLegUpdateType.NONE);
1070                                 } else {
1071                                         Vector3d dd = new Vector3d(p1);
1072                                         dd.sub(p2);
1073                                         dir2.negate();
1074                                         updatePathLegNext(tcp1, u.updated, PathLegUpdateType.NONE);
1075                                         updatePathLegNext(tcp2, u.updated, PathLegUpdateType.NONE);
1076                                         if (!u.reversed)
1077                                                 updatePathLegNext(u.start, u.updated, PathLegUpdateType.NONE);
1078                                         else
1079                                                 updatePathLegPrev(u.start, u.updated, PathLegUpdateType.NONE);
1080                                 }
1081                         } else {
1082                                 triedIR = true;
1083                         }
1084                 }
1085
1086         }
1087
1088         private static double spaceForTurn(PipeControlPoint tcp) {
1089                 // TODO : this returns now space for 90 deg turn.
1090                 // The challenge: position of tcp affects the turn angle, which then affects the required space. Perhaps we need to iterate...
1091                 // Additionally, if the path legs contain offset, using just positions of opposite path leg ends is not enough,
1092                 return ((TurnComponent)tcp.getPipelineComponent()).getTurnRadius();
1093         }
1094
1095         private static void insertElbowUpdate(UpdateStruct2 u, PipeControlPoint dcp, PipeControlPoint next, boolean dcpStart, Vector3d position, Vector3d directedDirection) throws Exception{
1096
1097
1098 //              Vector3d closest = new Vector3d(position);
1099 //              closest.add(directedDirection);
1100
1101                 PipeControlPoint tcp = null;
1102                 Vector3d closest;
1103                 if (dcpStart) {
1104                         closest = MathTools.closestPointOnStraight(next.getWorldPosition(), position, directedDirection);
1105                         tcp = insertElbow(dcp, next, closest);
1106                 } else {
1107                         closest = MathTools.closestPointOnStraight(dcp.getWorldPosition(), position, directedDirection);
1108                         tcp = insertElbow(next, dcp, closest);
1109                 }
1110                 // TODO properly calculate required distance between start and inserted elbow.
1111                 double d = MathTools.distance(position, closest);
1112                 double s = spaceForTurn(tcp);
1113                 if (d < s)  {
1114                         d = s - d;
1115                         Vector3d p = new Vector3d(directedDirection);
1116                         p.scale(d);
1117                         p.add(closest);
1118                         tcp.setPosition(p);
1119                         closest = p;
1120                 }
1121
1122
1123
1124                 if (DEBUG)
1125                         System.out.println("PipingRules.updateDirectedPipeRun() inserted " + tcp);
1126
1127                 if (dcpStart) {
1128                         // update pipe run from new turn to other end
1129                         ppNoDir(tcp, new Vector3d(closest), u.list, u.end, u.endPoint, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated);
1130                         // update pipe run from directed to new turn
1131                         processPathLeg(new UpdateStruct2(u.start, u.startPoint, new ArrayList<PipeControlPoint>(), tcp, new Vector3d(closest), directedDirection, new Vector3d(), false, 0, false, new ArrayList<ExpandIterInfo>(), u.updated));
1132                 } else {
1133                         // update pipe run from other end to new turn
1134                         ppNoDir(u.start, u.startPoint, u.list, tcp, new Vector3d(closest), u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated);
1135                         // update pipe run from new turn to directed
1136                         processPathLeg(new UpdateStruct2(tcp, new Vector3d(closest), new ArrayList<PipeControlPoint>(), u.end, u.endPoint, directedDirection, new Vector3d(), false, 0, false, new ArrayList<ExpandIterInfo>(), u.updated));
1137                 }
1138         }
1139
1140         /**
1141          * Checks if turns can be removed (turn angle near zero)
1142          */
1143         private static int checkTurns(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
1144                 if (DEBUG)
1145                         System.out.println("PipingRules.checkTurns() " + u.start + " " + u.end);
1146                 boolean startRemoved = false;
1147                 boolean endRemoved = false;
1148                 if (u.start.isVariableAngle()) {
1149                         // this won't work properly if inline control points are not updated
1150                         PipeControlPoint startPrev = u.start.getPrevious();
1151                         if (startPrev != null) {
1152                                 double a = updateTurnControlPointTurn(u.start, null, u.dir);
1153                                 if (a < MIN_TURN_ANGLE && u.start.isDeletable())
1154                                         startRemoved = true;
1155                                 else if (lengthChange == PathLegUpdateType.PREV || lengthChange == PathLegUpdateType.PREV_S) {
1156                                         PathLegUpdateType type;
1157                                         if (lengthChange == PathLegUpdateType.PREV_S)
1158                                                 type = PathLegUpdateType.PREV;
1159                                         else
1160                                                 type = PathLegUpdateType.NONE;
1161                                         updatePathLegPrev(u.start, u.start, type);
1162                                 }
1163                         }
1164                 }
1165                 if (u.end.isVariableAngle()) {
1166
1167                         PipeControlPoint endNext = u.end.getNext();
1168                         if (endNext != null) {
1169                                 // TODO: u.end, u.dir, null
1170                                 double a = updateTurnControlPointTurn(u.end, null, null);
1171                                 if (a < MIN_TURN_ANGLE && u.end.isDeletable())
1172                                         endRemoved = true;
1173                                 else if (lengthChange == PathLegUpdateType.NEXT || lengthChange == PathLegUpdateType.NEXT_S) {
1174                                         PathLegUpdateType type;
1175                                         if (lengthChange == PathLegUpdateType.NEXT_S)
1176                                                 type = PathLegUpdateType.NEXT;
1177                                         else
1178                                                 type = PathLegUpdateType.NONE;
1179                                         updatePathLegNext(u.end, u.end, type);
1180                                 }
1181                         }
1182                 }
1183                 if (DEBUG)
1184                         System.out.println("PipingRules.checkTurns() res " + startRemoved + " " + endRemoved);
1185                 if (!startRemoved && !endRemoved)
1186                         return REMOVE_NONE;
1187                 if (startRemoved && endRemoved)
1188                         return REMOVE_BOTH;
1189                 if (startRemoved)
1190                         return REMOVE_START;
1191                 return REMOVE_END;
1192         }
1193
1194         /**
1195          * Expands piperun search over turns that are going to be removed
1196          *
1197          */
1198         private static void expandPathLeg(UpdateStruct2 u, int type) throws Exception {
1199                 if (DEBUG)
1200                         System.out.println("PipingRules.expandPipeline " + u.start + " " + u.end);
1201                 ArrayList<PipeControlPoint> newList = new ArrayList<PipeControlPoint>();
1202                 switch (type) {
1203                 case REMOVE_NONE:
1204                         throw new RuntimeException("Error in piping rules");
1205                 case REMOVE_START:
1206                         u.toRemove.add(new ExpandIterInfo(u.start, REMOVE_START));
1207                         u.start = u.start.findPreviousEnd();
1208                         u.startPoint = u.start.getPosition();
1209                         u.start.findNextEnd(newList);
1210                         newList.addAll(u.list);
1211                         u.list = newList;
1212                         break;
1213                 case REMOVE_END:
1214                         u.toRemove.add(new ExpandIterInfo(u.end, REMOVE_END));
1215                         u.end = u.end.findNextEnd(newList);
1216                         u.endPoint = u.end.getPosition();
1217                         u.list.addAll(newList);
1218                         break;
1219                 case REMOVE_BOTH:
1220                         u.toRemove.add(new ExpandIterInfo(u.start, u.end));
1221                         u.start = u.start.findPreviousEnd();
1222                         u.startPoint = u.start.getPosition();
1223                         u.start.findNextEnd(newList);
1224                         newList.addAll(u.list);
1225                         u.list = newList;
1226                         newList = new ArrayList<PipeControlPoint>();
1227                         u.end = u.end.findNextEnd(newList);
1228                         u.endPoint = u.end.getPosition();
1229                         u.list.addAll(newList);
1230                         break;
1231                 default:
1232                         throw new RuntimeException("Error in piping rules");
1233
1234                 }
1235                 u.offset = new Vector3d();
1236                 if (u.hasOffsets) {
1237                         u.dir.normalize();
1238                         for (PipeControlPoint icp : u.list) {
1239                                 if (icp.isOffset()) {
1240                                         u.offset.add(icp.getSizeChangeOffsetVector(u.dir));
1241                                 } else if (icp.isDualSub())
1242                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1243                         }
1244                 }
1245                 if (DEBUG)
1246                         System.out.println("PipingRules.expandPipeline expanded " + u.start + " " + u.end);
1247                 u.iter++;
1248                 updatePathLeg(u, PathLegUpdateType.NONE);
1249         }
1250
1251         /**
1252          * reverts one iteration of turn removing back)
1253          */
1254         private static void backIter(UpdateStruct2 u) throws Exception {
1255
1256                 if (DEBUG)
1257                         System.out.println("PipingRules.backIter" + u.start + " " + u.end);
1258                 if (u.iter == 0)
1259                         throw new RuntimeException("Error in piping rules");
1260                 ExpandIterInfo info = u.toRemove.get(u.toRemove.size() - 1);
1261                 u.toRemove.remove(u.toRemove.size() - 1);
1262                 if (info.getType() == REMOVE_START || info.getType() == REMOVE_BOTH) {
1263                         while (u.list.size() > 0) {
1264                                 PipeControlPoint icp = u.list.get(0);
1265                                 if (icp.getPrevious().equals(info.getStart()))
1266                                         break;
1267                                 u.list.remove(icp);
1268                         }
1269                         u.start = info.getStart();
1270                 }
1271                 if (info.getType() == REMOVE_END || info.getType() == REMOVE_BOTH) {
1272                         while (u.list.size() > 0) {
1273                                 PipeControlPoint icp = u.list.get(u.list.size() - 1);
1274                                 if (icp.getNext().equals(info.getEnd()))
1275                                         break;
1276                                 u.list.remove(icp);
1277                         }
1278                         u.end = info.getEnd();
1279                 }
1280                 u.offset = new Vector3d();
1281                 if (u.hasOffsets) {
1282                         u.dir.normalize();
1283                         for (PipeControlPoint icp : u.list) {
1284                                 if (icp.isOffset()) {
1285                                         u.offset.add(icp.getSizeChangeOffsetVector(u.dir));
1286                                 } else if (icp.isDualSub())
1287                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1288                         }
1289                 }
1290                 processPathLeg(u);
1291
1292         }
1293
1294         /**
1295          * Processes pipe run (removes necessary turns and updates run ends)
1296          */
1297         // private static void processPathLeg(PipeControlPoint start, Point3d
1298         // startPoint,ArrayList<InlineControlPoint> list, PipeControlPoint
1299         // end,Point3d endPoint, Vector3d dir,Vector3d offset, boolean
1300         // hasOffsets,int iter, boolean reversed, ArrayList<ExpandIterInfo>
1301         // toRemove) throws TransactionException {
1302
1303         private static void processPathLeg(UpdateStruct2 u) throws Exception {
1304                 if (DEBUG)
1305                         System.out.println("PipingRules.processPathLeg " + u.start + " " + u.end);
1306                 processPathLeg(u, true, true);
1307         }
1308
1309         private static void processPathLeg(UpdateStruct2 u, boolean updateEnds, boolean updateInline) throws Exception {
1310                 if (DEBUG)
1311                         System.out.println("PipingRules.processPathLeg " + (updateEnds ? "ends " : "") + (updateInline ? "inline " : "") + u.start + " " + u.end);
1312
1313                 if (u.toRemove.size() > 0) {
1314                         for (ExpandIterInfo info : u.toRemove) {
1315                                 if (info.getStart() != null) {
1316                                         if (DEBUG)
1317                                                 System.out.println("PipingRules.processPathLeg removing start " + info.getStart());
1318                                         info.getStart()._remove();
1319                                 }
1320                                 if (info.getEnd() != null) {
1321                                         if (DEBUG)
1322                                                 System.out.println("PipingRules.processPathLeg removing end " + info.getEnd());
1323                                         info.getEnd()._remove();
1324                                 }
1325                         }
1326                         // ControlPointTools.removeControlPoint may remove more than one CP;
1327                         // we must populate inline CP list again.
1328                         u.list.clear();
1329                         u.start.findNextEnd( u.list);
1330                 }
1331                 // FIXME : inline CPs are update twice because their positions must be
1332                 // updated before and after ends.
1333                 updateInlineControlPoints(u, false);
1334
1335                 if (updateEnds) {
1336                         if (u.start.isTurn()) {
1337                                 //updateTurnControlPointTurn(u.start, u.start.getPrevious(), u.start.getNext());
1338                                 updateTurnControlPointTurn(u.start, null, null);
1339 //                              updatePathLegPrev(u.start, u.start, PathLegUpdateType.NONE);
1340                         } else if (u.start.isEnd()) {
1341                                 updateEndComponentControlPoint(u.start, u.startPoint, u.endPoint);
1342                         } else if (u.start.isInline()) {
1343                                 updateControlPointOrientation(u.start);
1344                         }
1345                         if (u.end.isTurn()) {
1346                                 //updateTurnControlPointTurn(u.end, u.end.getPrevious(), u.end.getNext());
1347                                 updateTurnControlPointTurn(u.end, null, null);
1348 //                              updatePathLegNext(u.end, u.end, PathLegUpdateType.NONE);
1349                         } else if (u.end.isEnd()) {
1350                                 updateEndComponentControlPoint(u.end, u.startPoint, u.endPoint);
1351                         } else if (u.end.isInline()) {
1352                                 updateControlPointOrientation(u.end);
1353                         }
1354
1355                 } else {
1356                         if (u.start.isEnd()) {
1357                                 updateEndComponentControlPoint(u.start, u.startPoint, u.endPoint);
1358                         }
1359                         if (u.end.isEnd()) {
1360                                 updateEndComponentControlPoint(u.end, u.startPoint, u.endPoint);
1361                         }
1362                 }
1363                 if (updateInline)
1364                         updateInlineControlPoints(u, true);
1365
1366         }
1367
1368         /**
1369          * Processes pipe run and recalculates offset
1370          */
1371         // private static void processPathLeg(PipeControlPoint start, Point3d
1372         // startPoint,ArrayList<InlineControlPoint> list, PipeControlPoint
1373         // end,Point3d endPoint, Vector3d dir, boolean hasOffsets,int iter, boolean
1374         // reversed, ArrayList<ExpandIterInfo> toRemove) throws TransactionException
1375         // {
1376         @SuppressWarnings("unused")
1377         private static void processPathLegNoOffset(UpdateStruct2 u) throws Exception {
1378                 if (DEBUG)
1379                         System.out.println("PipingRules.processPathLeg " + u.start + " " + u.end);
1380                 Vector3d offset = new Vector3d();
1381                 if (u.hasOffsets) {
1382                         u.dir.normalize();
1383                         for (PipeControlPoint icp : u.list) {
1384                                 if (icp.isOffset()) {
1385                                         offset.add(icp.getSizeChangeOffsetVector(u.dir));
1386                                 } else if (icp.isDualSub()) {
1387                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1388                                 }
1389                         }
1390                 }
1391                 processPathLeg(u);
1392         }
1393
1394         private static void updateOffsetPoint(PipeControlPoint sccp, Vector3d offset) {
1395                 Vector3d world = sccp.getWorldPosition();
1396                 world.add(offset);
1397                 PipeControlPoint ocp = sccp.getDualSub();
1398                 ocp.setWorldPosition(world);
1399         }
1400
1401         /**
1402          * Updates InlineControlPoints position when straight pipe's end(s) have
1403          * been changed)
1404          *
1405          * @param pipeline
1406          * @param icp
1407          * @param nextPoint
1408          * @param prevPoint
1409          */
1410         private static void updateInlineControlPoint(PipeControlPoint icp, Vector3d prev, Vector3d next,  Vector3d dir) {
1411                 if (DEBUG)
1412                         System.out.println("PipingRules.updateInlineControlPoint() " + icp);
1413
1414                 Vector3d inlinePoint = icp.getWorldPosition();
1415                 Vector3d prevPoint = new Vector3d(prev);
1416                 Vector3d nextPoint = new Vector3d(next);
1417                 if (!icp.isVariableLength()) {
1418                         // Reserve space for fixed length components.
1419                         MathTools.mad(prevPoint, dir, icp.getInlineLength());
1420                         MathTools.mad(nextPoint, dir, -icp.getInlineLength());
1421                         if (MathTools.distance(prevPoint, nextPoint) < ALLOWED_OFFSET) {
1422                                 prevPoint = prev;
1423                                 nextPoint = next;
1424                         }
1425                 }
1426                 boolean canCalc = MathTools.distance(prevPoint, nextPoint) > ALLOWED_OFFSET;
1427                 if (DEBUG)
1428                         System.out.print("InlineControlPoint update " + icp + " " + inlinePoint + " " + prevPoint + " " + nextPoint);
1429                 Vector3d newInlinePoint = null;
1430                 if (canCalc) {
1431                         boolean branchUpdate = false;
1432                         PipeControlPoint becp = null;
1433                         for (PipeControlPoint pcp : icp.getChildPoints())
1434                                 if (pcp.isNonDirected()) {
1435                                         branchUpdate = true;
1436                                         becp = pcp;
1437                                         break;
1438                                 }
1439
1440                         if (DUMMY || !branchUpdate) {
1441                                 newInlinePoint = MathTools.closestPointOnEdge(new Vector3d(inlinePoint), prevPoint, nextPoint);
1442
1443                         } else {
1444
1445                                 // FIXME : can only handle one branch
1446                                 PipeControlPoint p = null;
1447                                 if (becp.getNext() != null) {
1448                                         p = becp.findNextEnd();
1449                                 } else if (becp.getPrevious() != null) {
1450                                         p = becp.findPreviousEnd();
1451                                 }
1452                                 if (p == null) {
1453                                         newInlinePoint = MathTools.closestPointOnEdge(new Vector3d(inlinePoint), prevPoint, nextPoint);
1454                                 } else if (canCalc){
1455                                         Vector3d branchLegEnd = p.getWorldPosition();
1456                                         Vector3d dir2 = new Vector3d(inlinePoint);
1457                                         dir2.sub(branchLegEnd);
1458                                         Vector3d dir1 = new Vector3d(nextPoint);
1459                                         dir1.sub(prevPoint);
1460                                         newInlinePoint = new Vector3d();
1461                                         double mu[] = new double[2];
1462                                         MathTools.intersectStraightStraight(new Vector3d(prevPoint), dir1, new Vector3d(branchLegEnd), dir2, newInlinePoint, new Vector3d(), mu);
1463                                         if (DEBUG)
1464                                                 System.out.println(mu[0]);
1465                                         // FIXME : reserve space
1466                                         if (mu[0] < 0.0) {
1467                                                 newInlinePoint = new Vector3d(prevPoint);
1468                                         } else if (mu[0] > 1.0) {
1469                                                 newInlinePoint = new Vector3d(nextPoint);
1470                                         }
1471                                 }
1472                         }
1473                 } else {
1474                         // prevPoint == nextPoint
1475                         newInlinePoint = new Vector3d(prevPoint);
1476                 }
1477                 if (DEBUG)
1478                         System.out.println(" " + newInlinePoint);
1479
1480                 icp.setWorldPosition(newInlinePoint);
1481                 updateControlPointOrientation(icp);
1482         }
1483
1484         /**
1485          * Updates InlineControlPoints position when straight pipe's end(s) have
1486          * been changed)
1487          *
1488          * @param pipeline
1489          * @param icp
1490          * @param nextPoint
1491          * @param prevPoint
1492          */
1493         private static void updateEndComponentControlPoint(PipeControlPoint ecp, Vector3d start, Vector3d end) throws Exception {
1494                 if (DEBUG)
1495                         System.out.println("PipingRules.updateEndComponentControlPoint() " + ecp);
1496                 //FIXME : end control point cannot be fixed!
1497                 //if (!ecp.isFixed())
1498                 updateControlPointOrientation(ecp);
1499
1500                 for (PipeControlPoint pcp : ecp.getChildPoints()) {
1501                         // TODO update position
1502                         updatePathLegEndControlPoint(pcp);
1503                 }
1504         }
1505
1506         private static void updateControlPointOrientation(PipeControlPoint pcp) {
1507                 // FIXME : hack to bypass variable length components orientation
1508 //              if (pcp.getAtMostOneRelatedObject(ProcessResource.g3dResource.HasWorldOrientation) == null)
1509 //                      return;
1510 //              if (pcp.rotationAngle == null)
1511 //                      return;
1512                 Double angleO = pcp.getRotationAngle();
1513                 double angle = 0.0;
1514                 if (angleO != null)
1515                         angle = angleO;
1516                 Boolean reversedO = pcp.getReversed();
1517                 boolean reversed = false;
1518                 if (reversedO != null)
1519                         reversed = reversedO;
1520                 Quat4d q = pcp.getControlPointOrientationQuat(angle, reversed);
1521                 pcp.setWorldOrientation(q);
1522         }
1523
1524         /**
1525          * Updates all branches when branch's position has been changed
1526          *
1527          * @param bcp
1528          */
1529         private static void updateBranchControlPointBranches(PipeControlPoint bcp) throws Exception {
1530                 if (DEBUG)
1531                         System.out.println("PipingRules.updateBranchControlPointBranches() " + bcp);
1532                 if (bcp.isDualInline())
1533                         return;
1534                 Collection<PipeControlPoint> branches = bcp.getChildPoints();
1535                 if (branches.size() == 0) {
1536                         if (DEBUG)
1537                                 System.out.println("No Branches found");
1538                         return;
1539                 }
1540
1541                 for (PipeControlPoint pcp : branches) {
1542                         updatePathLegEndControlPoint(pcp);
1543                 }
1544         }
1545
1546         private static double updateTurnControlPointTurn(PipeControlPoint tcp, Vector3d prev, Vector3d next) {
1547                 if (next == null) {
1548                         UpdateStruct2 us = createUS(tcp, Direction.NEXT, 0, new ArrayList<PipingRules.ExpandIterInfo>(), tcp);
1549                         if (us != null)
1550                                 next = us.dir;
1551                 }
1552                 if (prev == null) {
1553                         UpdateStruct2 us = createUS(tcp, Direction.PREVIOUS, 0, new ArrayList<PipingRules.ExpandIterInfo>(), tcp);
1554                         if (us != null) {
1555                                 prev = us.dir;
1556                         }
1557                 }
1558
1559                 if (!tcp.asFixedAngle()) {
1560
1561
1562                         if (next == null || prev == null) {
1563                                 if (tcp.getTurnAngle() != null)
1564                                         return tcp.getTurnAngle();
1565                                 return Math.PI; // FIXME : argh
1566                         }
1567                         double turnAngle = prev.angle(next);
1568
1569                         double angle = Math.PI - turnAngle;
1570
1571                         Vector3d turnAxis = new Vector3d();
1572                         turnAxis.cross(prev, next);
1573                         if (turnAxis.lengthSquared() > MathTools.NEAR_ZERO) {
1574                                 double elbowRadius = ((TurnComponent)tcp.getPipelineComponent()).getTurnRadius();
1575                                 double R = elbowRadius / Math.tan(angle * 0.5);
1576
1577                                 turnAxis.normalize();
1578                                 tcp.setTurnAngle(turnAngle);
1579                                 tcp.setLength(R);// setComponentOffsetValue(R);
1580                                 tcp.setTurnAxis(turnAxis);
1581         //                      tcp.setPosition(tcp.getPosition());
1582                         } else {
1583                                 turnAngle = 0.0;
1584                                 tcp.setTurnAngle(0.0);
1585                                 tcp.setLength(0.0);
1586                                 tcp.setTurnAxis(new Vector3d(MathTools.Y_AXIS));
1587                         }
1588
1589                         updateControlPointOrientation(tcp);
1590
1591                         if (DEBUG)
1592                                 System.out.println("PipingTools.updateTurnControlPointTurn " + prev + " " + next + " " + turnAngle + " " + turnAxis);
1593                         return turnAngle;
1594                 } else {
1595
1596                         if (prev != null && next != null) {
1597                                 // Nothing to do
1598                         } else if (prev == null) {
1599                                 if (!tcp._getReversed())
1600                                         tcp.setReversed(true);
1601                         } else if (next == null) {
1602                                 if (tcp._getReversed())
1603                                         tcp.setReversed(false);
1604                         }
1605
1606                         Vector3d dir = null;
1607                         if (!tcp._getReversed()) {
1608                                 dir = prev;
1609                         } else {
1610                                 dir = next;
1611                                 dir.negate();
1612                         }
1613                         if (dir == null) {
1614                                 return Math.PI; // FIXME : argh
1615                         }
1616
1617                         Quat4d q = PipeControlPoint.getControlPointOrientationQuat(dir, tcp.getRotationAngle() != null ? tcp.getRotationAngle() : 0.0);
1618                         Vector3d v = new Vector3d();
1619                         MathTools.rotate(q, MathTools.Y_AXIS,v);
1620                         tcp.setTurnAxis(v);
1621                         tcp.setWorldOrientation(q);
1622                         if (tcp.getTurnAngle() != null)
1623                                 return tcp.getTurnAngle();
1624                         return Math.PI; // FIXME : argh
1625                 }
1626
1627
1628         }
1629
1630         public static List<PipeControlPoint> getControlPoints(PipeRun pipeRun) {
1631                 List<PipeControlPoint> list = new ArrayList<PipeControlPoint>();
1632                 if (pipeRun.getControlPoints().size() == 0)
1633                         return list;
1634                 PipeControlPoint pcp = pipeRun.getControlPoints().iterator().next();
1635                 while (pcp.getPrevious() != null) {
1636                         PipeControlPoint prev = pcp.getPrevious();
1637                         if (prev.getPipeRun() != pipeRun && prev.getPipeRun() != null) { // bypass possible corruption
1638                             break;
1639                         }
1640                         pcp = prev;
1641                 }
1642                 if (pcp.isDualSub()) {
1643                         pcp = pcp.getParentPoint();
1644                 }
1645                 list.add(pcp);
1646                 while (pcp.getNext() != null) {
1647                         pcp = pcp.getNext();
1648                         if (pcp.getPipeRun() != pipeRun)
1649                                 break;
1650                         list.add(pcp);
1651                 }
1652                 return list;
1653         }
1654
1655         public static void reverse(PipeRun pipeRun) {
1656
1657                 while (true) {
1658                         List<PipeControlPoint> points = getControlPoints(pipeRun);
1659                         PipeControlPoint pcp = points.get(0);
1660                         if (pcp.isSizeChange() && pcp.getChildPoints().size() > 0) {
1661                                 pipeRun = pcp.getPipeRun();
1662                         } else {
1663                                 break;
1664                         }
1665                 }
1666                 List<PipeRun> all = new ArrayList<PipeRun>();
1667                 List<List<PipeControlPoint>> pcps = new ArrayList<List<PipeControlPoint>>();
1668                 while (true) {
1669                         all.add(pipeRun);
1670                         List<PipeControlPoint> points = getControlPoints(pipeRun);
1671                         pcps.add(points);
1672                         PipeControlPoint pcp = points.get(points.size()-1);
1673                         if (pcp.getChildPoints().size() > 0) {
1674                                 pipeRun = pcp.getChildPoints().get(0).getPipeRun();
1675                         } else {
1676                                 break;
1677                         }
1678                 }
1679                 for (int i = 0 ; i < all.size(); i++) {
1680                         List<PipeControlPoint> list = pcps.get(i);
1681                         _reverse(list);
1682                 }
1683                 for (int i = 0 ; i < all.size(); i++) {
1684                         boolean last = i == all.size() - 1;
1685                         List<PipeControlPoint> list = pcps.get(i);
1686
1687                         if (!last) {
1688                                 List<PipeControlPoint> list2 = pcps.get(i+1);
1689                                 PipeControlPoint prev = list.get(list.size()-1);
1690                                 PipeControlPoint next = list2.get(0);
1691                                 System.out.println();
1692                                 if (prev == next) {
1693                                         // Reverse the component on the boundary.
1694                                         InlineComponent ic = (InlineComponent)prev.getPipelineComponent();
1695                                         PipeRun r1 = ic.getPipeRun();
1696                                         PipeRun r2 = ic.getAlternativePipeRun();
1697                                         if (r1 == null || r2 == null)
1698                                                 throw new RuntimeException("Components on PipeRun changes should refer to bot PipeRuns");
1699                                         ic.deattach();
1700                                         r2.addChild(ic);
1701                                         ic.setPipeRun(r2);
1702                                         ic.setAlternativePipeRun(r1);
1703                                 } else {
1704                                         throw new RuntimeException("PipeRun changes should contain shared control points");
1705                                 }
1706
1707                         }
1708                 }
1709
1710         }
1711
1712         private static void _reverse(List<PipeControlPoint> list) {
1713                 if (list.size() <= 1)
1714                         return; // nothing to do.
1715
1716                 for (int i = 0 ; i < list.size(); i++) {
1717                         boolean first = i == 0;
1718                         boolean last = i == list.size() - 1;
1719                         PipeControlPoint current = list.get(i);
1720                         PipeControlPoint currentSub = null;
1721                         if (current.isDualInline())
1722                                 currentSub = current.getDualSub();
1723                         if (first) {
1724                                 PipeControlPoint next = list.get(i+1);
1725                                 if (next.isDualInline())
1726                                         next = next.getDualSub();
1727                                 if (current.getNext() == next)
1728                                         current.setNext(null);
1729                                 current.setPrevious(next);
1730                                 if (currentSub != null) {
1731                                         if (currentSub.getNext() == next)
1732                                                 currentSub.setNext(null);
1733                                         currentSub.setPrevious(next);
1734                                 }
1735                         } else if (last) {
1736                                 PipeControlPoint prev = list.get(i-1);
1737
1738                                 if (current.getPrevious() == prev)
1739                                         current.setPrevious(null);
1740                                 current.setNext(prev);
1741
1742                                 if (currentSub != null) {
1743                                         if (currentSub.getPrevious() == prev)
1744                                                 currentSub.setPrevious(null);
1745                                         currentSub.setNext(prev);
1746                                 }
1747                         } else {
1748                                 PipeControlPoint prev = list.get(i-1);
1749                                 PipeControlPoint next = list.get(i+1);
1750                                 if (next.isDualInline())
1751                                         next = next.getDualSub();
1752
1753
1754                                 current.setPrevious(next);
1755                                 current.setNext(prev);
1756
1757                                 if (currentSub != null) {
1758                                         currentSub.setPrevious(next);
1759                                         currentSub.setNext(prev);
1760                                 }
1761
1762                         }
1763                         //if (current.isTurn() && current.isFixed()) {
1764                         if (current.asFixedAngle()) {
1765                                 current.setReversed(!current._getReversed());
1766                         }
1767                         if (current.isInline() && current.isReverse()) {
1768                                 current.setReversed(!current._getReversed());
1769                         }
1770                 }
1771         }
1772
1773
1774
1775         public static void validate(PipeRun pipeRun) {
1776                 if (pipeRun == null)
1777                         return;
1778                 Collection<PipeControlPoint> pcps = pipeRun.getControlPoints();
1779                 int count = 0;
1780                 //System.out.println("Validate " + pipeRun.getName());
1781                 for (PipeControlPoint pcp : pcps) {
1782                         if (pcp.getParentPoint() == null || pcp.getParentPoint().getPipeRun() != pipeRun)
1783                                 count++;
1784                 }
1785                 List<PipeControlPoint> runPcps = getControlPoints(pipeRun);
1786                 if (runPcps.size() != count) {
1787                         System.out.println("Run " + pipeRun.getName() + " contains unconnected control points, found " + runPcps.size() + " connected, " + pcps.size() + " total.");
1788                         for (PipeControlPoint pcp : pcps) {
1789                             if (!runPcps.contains(pcp)) {
1790                                 System.out.println("Unconnected " + pcp + " " + pcp.getPipelineComponent());
1791                             }
1792                         }
1793                 }
1794                 for (PipeControlPoint pcp : pcps) {
1795                     if (pcp.getPipeRun() == null) {
1796                         System.out.println("PipeRun ref missing " + pcp + " " + pcp.getPipelineComponent());
1797                     }
1798                         if (!pcp.isDirected() && pcp.getNext() == null && pcp.getPrevious() == null)
1799                                 System.out.println("Orphan undirected " + pcp + " " + pcp.getPipelineComponent());
1800                 }
1801                 for (PipeControlPoint pcp : pcps) {
1802                         if (pcp.getParentPoint() == null) {
1803                                 PipeControlPoint sub = null;
1804                                 if (pcp.isDualInline())
1805                                         sub = pcp.getDualSub();
1806                                 PipeControlPoint next = pcp.getNext();
1807                                 PipeControlPoint prev = pcp.getPrevious();
1808                                 if (next != null) {
1809                                         if (!(next.getPrevious() == pcp || next.getPrevious() == sub)) {
1810                                                 System.out.println("Inconsistency between " + pcp + " -> " +next );
1811                                         }
1812                                 }
1813                                 if (prev != null) {
1814                                         PipeControlPoint prevParent = null;
1815                                         if (prev.isDualSub()) {
1816                                                 prevParent = prev.getParentPoint();
1817                                         } else if (prev.isDualInline()) {
1818                                                 System.out.println("Inconsistency between " + pcp + " <-- " +prev );
1819                                         }
1820                                         if (!(prev.getNext() == pcp && (prevParent == null || prevParent.getNext() == pcp))) {
1821                                                 System.out.println("Inconsistency between " + pcp + " <-- " +prev );
1822                                         }
1823                                 }
1824                         }
1825                 }
1826         }
1827
1828         public static void splitVariableLengthComponent(PipelineComponent newComponent, InlineComponent splittingComponent, boolean assignPos) throws Exception{
1829                 assert(!splittingComponent.getControlPoint().isFixedLength());
1830                 assert(!(newComponent instanceof  InlineComponent && !newComponent.getControlPoint().isFixedLength()));
1831                 PipeControlPoint newCP = newComponent.getControlPoint();
1832                 PipeControlPoint splittingCP = splittingComponent.getControlPoint();
1833                 PipeControlPoint nextCP = splittingCP.getNext();
1834                 PipeControlPoint prevCP = splittingCP.getPrevious();
1835
1836                 /* there are many different cases to insert new component when
1837                    it splits existing VariableLengthinlineComponent.
1838
1839                    1. VariableLengthComponet is connected from both sides:
1840                           - insert new component between VariableLength component and component connected to it
1841                           - insert new VariableLengthComponent between inserted component and component selected in previous step
1842
1843                    2. VariableLengthComponent is connected from one side
1844                          - Use previous case or:
1845                          - Insert new component to empty end
1846                          - Insert new VariableLength component to inserted components empty end
1847
1848                    3. VariableLength is not connected to any component.
1849                          - Should not be possible, at least in current implementation.
1850                          - Could be done using second case
1851
1852                 */
1853
1854                 if (nextCP == null && prevCP == null) {
1855                         // this should not be possible
1856                         throw new RuntimeException("VariableLengthComponent " + splittingComponent + " is not connected to anything.");
1857                 }
1858                 double newLength = newComponent.getControlPoint().getLength();
1859
1860
1861                 Point3d next = new Point3d();
1862                 Point3d prev = new Point3d();
1863                 splittingCP.getInlineControlPointEnds(prev, next);
1864
1865                 Vector3d newPos = null;
1866                 if (assignPos) {
1867                         newPos = new Vector3d(prev);
1868                         Vector3d dir = new Vector3d(next);
1869                         dir.sub(prev);
1870                         dir.scale(0.5);
1871                         newPos.add(dir);
1872                         newComponent.setWorldPosition(newPos);
1873                 } else {
1874                         newPos = newComponent.getWorldPosition();
1875                 }
1876
1877
1878
1879                 Vector3d dir = new Vector3d(next);
1880                 dir.sub(prev);
1881                 dir.normalize();
1882                 dir.scale(newLength * 0.5);
1883                 Point3d vn = new Point3d(newPos);
1884                 Point3d vp = new Point3d(newPos);
1885                 vn.add(dir);
1886                 vp.sub(dir);
1887                 double ln = vn.distance(next);
1888                 double lp = vp.distance(prev);
1889                 vp.interpolate(prev, 0.5);
1890                 vn.interpolate(next, 0.5);
1891
1892
1893                 if (nextCP == null) {
1894                         newCP.insert(splittingCP, Direction.NEXT);
1895                         insertStraight(newCP, Direction.NEXT, new Vector3d(vn), ln);
1896                         splittingCP.setWorldPosition(new Vector3d(vp));
1897 //                      ControlPointTools.setWorldPosition(splittingCP, vp);
1898 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, lp);
1899                 } else if (prevCP == null) {
1900                         newCP.insert(splittingCP, Direction.PREVIOUS);
1901                         insertStraight(newCP, Direction.PREVIOUS, new Vector3d(vp), lp);
1902                         splittingCP.setWorldPosition(new Vector3d(vn));
1903 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, ln);
1904                 } else {
1905                         newCP.insert(splittingCP, nextCP);
1906                         insertStraight(newCP, nextCP, new Vector3d(vn), ln);
1907                         splittingCP.setWorldPosition(new Vector3d(vp));
1908 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, lp);
1909                 }
1910                 positionUpdate(newCP);
1911
1912         }
1913
1914         public static void addSizeChange(boolean reversed, PipeRun pipeRun, PipeRun other, InlineComponent reducer, PipeControlPoint previous, PipeControlPoint next) {
1915                 PipeControlPoint pcp = reducer.getControlPoint();
1916                 PipeControlPoint ocp = pcp.getDualSub();
1917                 if (!reversed) {
1918                         String name = pipeRun.getUniqueName("Reducer");
1919                         reducer.setName(name);
1920                         pipeRun.addChild(reducer);
1921                         other.addChild(ocp);
1922                         reducer.setAlternativePipeRun(other);
1923
1924                         previous.setNext(pcp);
1925                         pcp.setPrevious(previous);
1926                         ocp.setPrevious(previous);
1927                         if (next != null) {
1928                                 pcp.setNext(next);
1929                                 ocp.setNext(next);
1930                                 next.setPrevious(ocp);
1931                         }
1932                 } else {
1933                         String name = other.getUniqueName("Reducer");
1934                         reducer.setName(name);
1935                         other.addChild(reducer);
1936                         pipeRun.addChild(ocp);
1937                         reducer.setAlternativePipeRun(pipeRun);
1938
1939                         if (next != null) {
1940                                 next.setNext(pcp);
1941                                 pcp.setPrevious(next);
1942                                 ocp.setPrevious(next);
1943                         }
1944                         pcp.setNext(previous);
1945                         ocp.setNext(previous);
1946                         previous.setPrevious(ocp);
1947                 }
1948         }
1949 }