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> updates = new ArrayList<PipeControlPoint>();
  48
  49         private static Object mutex = new Object();
  50
  51         public static void requestUpdate(PipeControlPoint pcp) {
  52                 if (DEBUG) System.out.println("PipingRules request " + pcp);
  53                 synchronized (mutex) {
  54                 if (!updates.contains(pcp))
  55                         updates.add(pcp);
  56                 }
  57         }
  58
  59         public static synchronized boolean update() throws Exception {
  60                 if (updates.size() == 0)
  61                         return false;
  62                 List<PipeControlPoint> temp = new ArrayList<PipeControlPoint>(updates.size());
  63                 synchronized(mutex) {
  64                         temp.addAll(updates);
  65                         updates.clear();
  66                 }
  67
  68                 for (PipeControlPoint pcp : temp)
  69                         positionUpdate(pcp);
  70                 return true;
  71         }
  72
  73         public static boolean positionUpdate(PipeControlPoint pcp) throws Exception {
  74
  75                 return positionUpdate(pcp, true);
  76         }
  77
  78         public static boolean positionUpdate(PipeControlPoint pcp, boolean allowIR) throws Exception {
  79                 if (updating || !enabled)
  80                         return true;
  81                 if (pcp.getPipeRun() == null)
  82                         return false;
  83                 try {
  84                         if (DEBUG) System.out.println("PipingRules " + pcp);
  85                         updating = true;
  86                         allowInsertRemove = allowIR;
  87                         triedIR = false;
  88                         validate(pcp.getPipeRun());
  89                         if (pcp.isPathLegEnd()) {
  90                                 updatePathLegEndControlPoint(pcp); // FIXME: Rules won't work properly, if they are not run twice.
  91                                 updatePathLegEndControlPoint(pcp);
  92                         } else {
  93                                 updateInlineControlPoint(pcp);
  94                                 updateInlineControlPoint(pcp);
  95                         }
  96                         validate(pcp.getPipeRun());
  97                         if (!allowInsertRemove)
  98                                 return !triedIR;
  99                         return true;
 100                 } finally {
 101                         updating = false;
 102 //                      System.out.println("PipingRules done " + pcp);
 103                 }
 104         }
 105
 106         public static void setEnabled(boolean enabled) {
 107                 PipingRules.enabled = enabled;
 108                 if(!enabled)
 109                         updates.clear();
 110         }
 111
 112         public static boolean isEnabled() {
 113                 return enabled;
 114         }
 115
 116 //      private void commit() {
 117 //              root.getNodeMap().commit();
 118 //      }
 119
 120         public static class ExpandIterInfo {
 121                 // these two are turn control points
 122                 private PipeControlPoint start;
 123                 private PipeControlPoint end;
 124                 private int type;
 125
 126                 public ExpandIterInfo() {
 127
 128                 }
 129
 130                 public ExpandIterInfo(PipeControlPoint tcp, int type) {
 131                         if (type == REMOVE_START)
 132                                 start = tcp;
 133                         else
 134                                 end = tcp;
 135                         this.type = type;
 136                 }
 137
 138                 public ExpandIterInfo(PipeControlPoint start, PipeControlPoint end) {
 139                         this.start = start;
 140                         this.end = end;
 141                         this.type = REMOVE_BOTH;
 142                 }
 143
 144                 public PipeControlPoint getEnd() {
 145                         return end;
 146                 }
 147
 148                 public void setEnd(PipeControlPoint end) {
 149                         this.end = end;
 150                 }
 151
 152                 public PipeControlPoint getStart() {
 153                         return start;
 154                 }
 155
 156                 public void setStart(PipeControlPoint start) {
 157                         this.start = start;
 158                 }
 159
 160                 public int getType() {
 161                         return type;
 162                 }
 163
 164                 public void setType(int type) {
 165                         this.type = type;
 166                 }
 167
 168         }
 169
 170         private static void updatePathLegEndControlPoint(PipeControlPoint pcp) throws Exception {
 171                 if (DEBUG)
 172                         System.out.println("PipingRules.updatePathLegEndControlPoint() " + pcp);
 173                 if (pcp.getNext() != null) {
 174                         updatePathLegNext(pcp, pcp, PathLegUpdateType.NEXT_S);
 175                 }
 176                 if (pcp.getPrevious() != null) {
 177                         updatePathLegPrev(pcp, pcp, PathLegUpdateType.PREV_S);
 178                 }
 179
 180         }
 181
 182         private static void updateInlineControlPoint(PipeControlPoint pcp) throws Exception {
 183                 if (DEBUG)
 184                         System.out.println("PipingRules.updateInlineControlPoint() " + pcp);
 185                 PipeControlPoint start = pcp.findPreviousEnd();
 186                 updatePathLegNext(start, pcp, PathLegUpdateType.NONE);
 187         }
 188
 189         private static PipeControlPoint insertElbow(PipeControlPoint pcp1, PipeControlPoint pcp2, Vector3d pos) throws Exception{
 190                 if (DEBUG)
 191                         System.out.println("PipingRules.insertElbow() " + pcp1 + " " + pcp2 + " " + pos);
 192                 if (pcp1.getNext() == pcp2 && pcp2.getPrevious() == pcp1) {
 193
 194                 } else if (pcp1.getNext() == pcp2 && pcp1.isDualInline() && pcp2.getPrevious() == pcp1.getSubPoint().get(0)) {
 195                         pcp1 = pcp1.getSubPoint().get(0);
 196                 } else if (pcp1.getPrevious() == pcp2 && pcp2.getNext() == pcp1) {
 197                         PipeControlPoint t = pcp1;
 198                         pcp1 = pcp2;
 199                         pcp2 = t;
 200                 } else if (pcp2.isDualInline() && pcp1.getPrevious() == pcp2.getSubPoint().get(0) && pcp2.getNext() == pcp1) {
 201                         PipeControlPoint t = pcp1;
 202                         pcp1 = pcp2.getSubPoint().get(0);
 203                         pcp2 = t;
 204                 } else {
 205                         throw new RuntimeException();
 206                 }
 207                 TurnComponent elbow = ComponentUtils.createTurn((P3DRootNode)pcp1.getRootNode());
 208                 PipeControlPoint pcp = elbow.getControlPoint();
 209                 if (pcp1.isDualInline())
 210                         pcp1 = pcp1.getSubPoint().get(0);
 211                 String name = pcp1.getPipeRun().getUniqueName("Elbow");
 212                 elbow.setName(name);
 213                 pcp1.getPipeRun().addChild(elbow);
 214
 215                 pcp.insert(pcp1, pcp2);
 216
 217                 pcp.setWorldPosition(pos);
 218                 validate(pcp.getPipeRun());
 219                 return pcp;
 220         }
 221
 222         private static PipeControlPoint insertStraight(PipeControlPoint pcp1, PipeControlPoint pcp2, Vector3d pos, double length) throws Exception {
 223                 if (DEBUG)
 224                         System.out.println("PipingRules.insertStraight() " + pcp1 + " " + pcp2 + " " + pos);
 225                 if (pcp1.getNext() == pcp2 && pcp2.getPrevious() == pcp1) {
 226
 227                 } else if (pcp1.getNext() == pcp2 && pcp1.isDualInline() && pcp2.getPrevious() == pcp1.getSubPoint().get(0)) {
 228                         pcp1 = pcp1.getSubPoint().get(0);
 229                 } else if (pcp1.getPrevious() == pcp2 && pcp2.getNext() == pcp1) {
 230                         PipeControlPoint t = pcp1;
 231                         pcp1 = pcp2;
 232                         pcp2 = t;
 233                 } else if (pcp2.isDualInline() && pcp1.getPrevious() == pcp2.getSubPoint().get(0) && pcp2.getNext() == pcp1) {
 234                         PipeControlPoint t = pcp1;
 235                         pcp1 = pcp2.getSubPoint().get(0);
 236                         pcp2 = t;
 237                 } else {
 238                         throw new RuntimeException();
 239                 }
 240                 InlineComponent component = ComponentUtils.createStraight((P3DRootNode)pcp1.getRootNode());
 241                 PipeControlPoint scp = component.getControlPoint();
 242                 if (pcp1.isDualInline())
 243                         pcp1 = pcp1.getSubPoint().get(0);
 244                 String name = pcp1.getPipeRun().getUniqueName("Pipe");
 245                 component.setName(name);
 246                 pcp1.getPipeRun().addChild(component);
 247
 248                 scp.insert(pcp1, pcp2);
 249
 250                 scp.setWorldPosition(pos);
 251                 scp.setLength(length);
 252                 validate(scp.getPipeRun());
 253                 return scp;
 254         }
 255
 256         private static PipeControlPoint insertStraight(PipeControlPoint pcp, Direction direction , Vector3d pos, double length) throws Exception {
 257                 if (DEBUG)
 258                         System.out.println("PipingRules.insertStraight() " + pcp + " " + direction + " " + pos);
 259
 260                 InlineComponent component = ComponentUtils.createStraight((P3DRootNode)pcp.getRootNode());
 261                 PipeControlPoint scp = component.getControlPoint();
 262                 if (pcp.isDualInline() && direction == Direction.NEXT)
 263                         pcp = pcp.getSubPoint().get(0);
 264                 String name = pcp.getPipeRun().getUniqueName("Pipe");
 265                 component.setName(name);
 266                 pcp.getPipeRun().addChild(component);
 267
 268                 scp.insert(pcp,direction);
 269
 270                 scp.setWorldPosition(pos);
 271                 scp.setLength(length);
 272                 validate(scp.getPipeRun());
 273                 return scp;
 274         }
 275
 276         private static void updatePathLegNext(PipeControlPoint start, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 277                 ArrayList<PipeControlPoint> list = new ArrayList<PipeControlPoint>();
 278                 PipeControlPoint end = start.findNextEnd(list);
 279                 // this is for inline cp that is also path leg end
 280                 if (lengthChange == PathLegUpdateType.NONE) {
 281                         if (start.equals(updated))
 282                                 lengthChange = PathLegUpdateType.NEXT;
 283                         else if (end.equals(updated))
 284                                 lengthChange = PathLegUpdateType.PREV;
 285                 }
 286                 updatePathLegNext(start, list, end, updated, lengthChange);
 287         }
 288
 289         private static void updatePathLegNext(PipeControlPoint start, ArrayList<PipeControlPoint> list, PipeControlPoint end, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 290                 updatePathLeg(start, list, end, false, 0, new ArrayList<ExpandIterInfo>(), updated, lengthChange);
 291         }
 292
 293         private static void updatePathLegPrev(PipeControlPoint start, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 294                 ArrayList<PipeControlPoint> list = new ArrayList<PipeControlPoint>();
 295                 PipeControlPoint end = start.findPreviousEnd(list);
 296                 // TODO: this method is not symmetric with updatePathLegNext, which may alter lengthChange parameter?
 297                 updatePathLegPrev(start, list, end, updated, lengthChange);
 298         }
 299
 300         private static void updatePathLegPrev(PipeControlPoint start, ArrayList<PipeControlPoint> list, PipeControlPoint end, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 301                 // reverses the list
 302                 ArrayList<PipeControlPoint> nextList = new ArrayList<PipeControlPoint>();
 303                 for (PipeControlPoint icp : list) {
 304                         if (icp.isDualSub()) {
 305                                 nextList.add(0, icp.getParentPoint());
 306                         } else {
 307                                 nextList.add(0, icp);
 308                         }
 309                 }
 310                 updatePathLeg(end, nextList, start, true, 0, new ArrayList<ExpandIterInfo>(), updated, lengthChange);
 311
 312         }
 313
 314         private static class UpdateStruct2 {
 315                 public PipeControlPoint start;
 316                 public Vector3d startPoint;
 317                 public ArrayList<PipeControlPoint> list;
 318                 public PipeControlPoint end;
 319                 public Vector3d endPoint;
 320                 public Vector3d dir;
 321                 public Vector3d offset;
 322                 public boolean hasOffsets;
 323                 public int iter;
 324                 public boolean reversed;
 325                 public ArrayList<ExpandIterInfo> toRemove;
 326                 public PipeControlPoint updated;
 327
 328                 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) {
 329                         if (start == null || end == null)
 330                                 throw new NullPointerException();
 331                         this.start = start;
 332                         this.startPoint = startPoint;
 333                         this.list = list;
 334                         this.end = end;
 335                         this.endPoint = endPoint;
 336                         this.dir = dir;
 337                         this.offset = offset;
 338                         this.hasOffsets = hasOffsets;
 339                         this.iter = iter;
 340                         this.reversed = reversed;
 341                         this.toRemove = toRemove;
 342                         this.updated = updated;
 343
 344                         if (!MathTools.isValid(startPoint) ||
 345                                 !MathTools.isValid(endPoint) ||
 346                                 !MathTools.isValid(dir)) {
 347                                 throw new RuntimeException();
 348                         }
 349                 }
 350
 351                 public String toString() {
 352                         return start + " " + end+ " " + dir + " " + hasOffsets + " " + offset + " " + iter + " " + toRemove.size();
 353                 }
 354
 355         }
 356
 357         private static boolean calculateOffset(Vector3d startPoint, Vector3d endPoint, ArrayList<PipeControlPoint> list, Vector3d dir, Vector3d offset) {
 358                 boolean hasOffsets = false;
 359                 List<PipeControlPoint> offsets = new ArrayList<PipeControlPoint>(list.size());
 360                 for (PipeControlPoint icp : list) {
 361                         if (icp.isOffset()) {
 362                                 offsets.add(icp);
 363                         } else if (icp.isDualSub())
 364                                 ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
 365                 }
 366                 if (offsets.size() == 0) {
 367                         dir.set(endPoint);
 368                         dir.sub(startPoint);
 369                         double l = dir.lengthSquared();
 370                         if (l > MathTools.NEAR_ZERO)
 371                                 dir.scale(1.0/Math.sqrt(l));
 372                         offset.set(0.0, 0.0, 0.0);
 373                         return false;
 374                 } else {
 375                         Vector3d sp = new Vector3d(startPoint);
 376                         Point3d ep = new Point3d(endPoint);
 377                         dir.set(ep);
 378                         dir.sub(sp);
 379                         double l = dir.lengthSquared();
 380                         if (l > MathTools.NEAR_ZERO)
 381                                 dir.scale(1.0/Math.sqrt(l));
 382                         int iter = 100;
 383                         while (iter >= 0) {
 384                                 iter--;
 385                                 offset.set(0.0, 0.0, 0.0);
 386
 387                                 for (PipeControlPoint icp : offsets) {
 388                                         Vector3d v = icp.getSizeChangeOffsetVector(dir);
 389                                         offset.add(v);
 390                                 }
 391                                 Point3d nep = new Point3d(endPoint);
 392                                 nep.sub(offset);
 393                                 if (nep.distance(ep) < 0.0000000001) {
 394                                         break;
 395                                 }
 396                                 ep = nep;
 397                                 dir.set(ep);
 398                                 dir.sub(sp);
 399                                 l = dir.lengthSquared();
 400                                 if (l > MathTools.NEAR_ZERO)
 401                                         dir.scale(1.0/Math.sqrt(l));
 402                         }
 403                         hasOffsets = true;
 404                 }
 405
 406 //              for (PipeControlPoint icp : list) {
 407 //                      if (icp.isOffset()) {
 408 //                              icp.setOffset(((InlineComponent)icp.getPipelineComponent()).getOffset());
 409 //                              hasOffsets = true;
 410 //                              Vector3d v = icp.getSizeChangeOffsetVector(dir);
 411 //                              offset.add(v);
 412 //                      } else if (icp.isDualSub())
 413 //                              ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
 414 //              }
 415                 if (DEBUG && hasOffsets)
 416                         System.out.println("calcOffset s:"+ startPoint + " e:" + endPoint + " d:" + dir + " o:"+offset) ;
 417                 return hasOffsets;
 418         }
 419
 420         /**
 421          * @param start
 422          *            starting point of the pipe run
 423          * @param list
 424          *            list of inline control points in the pipe run
 425          * @param end
 426          *            ending point of the pipe run
 427          * @param reversed
 428          *            boolean flag indicating wether start or end control point was
 429          *            modified (if true then end point was modified)
 430          * @throws TransactionException
 431          */
 432         private static void updatePathLeg(PipeControlPoint start, ArrayList<PipeControlPoint> list, PipeControlPoint end, boolean reversed, int iter, ArrayList<ExpandIterInfo> toRemove, PipeControlPoint updated, PathLegUpdateType lengthChange) throws Exception {
 433                 if (start == end)
 434                         return;
 435                 // FIXME: direction is calculated wrong way!
 436                 boolean hasOffsets = false;
 437                 Vector3d offset = new Vector3d();
 438                 Vector3d startPoint = start.getWorldPosition();
 439                 Vector3d endPoint = end.getWorldPosition();
 440                 Vector3d dir = new Vector3d();
 441                 hasOffsets = calculateOffset(startPoint, endPoint, list, dir, offset);
 442                 updatePathLeg(new UpdateStruct2(start, startPoint, list, end, endPoint, dir, offset, hasOffsets, iter, reversed, toRemove, updated), lengthChange);
 443
 444         }
 445
 446         private static void updatePathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 447                 int directed = 0;
 448                 if (u.start.isDirected())
 449                         directed++;
 450                 if (u.end.isDirected())
 451                         directed++;
 452                 switch (directed) {
 453                 case 0:
 454                         updateFreePathLeg(u, lengthChange);
 455                         break;
 456                 case 1:
 457                         updateDirectedPathLeg(u, lengthChange);
 458                         break;
 459                 case 2:
 460                         updateDualDirectedPathLeg(u, lengthChange);
 461                         break;
 462                 }
 463
 464         }
 465
 466         private static void updateFreePathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 467                 if (DEBUG)
 468                         System.out.println("PipingRules.updateFreePipeRun " + u + " " + lengthChange);
 469                 checkExpandPathLeg(u, lengthChange);
 470                 if (u.start.isInline() || u.end.isInline())
 471                         processPathLeg(u, true, false);
 472         }
 473
 474         private static void updateInlineControlPoints(UpdateStruct2 u, boolean checkSizes) throws Exception{
 475                 if (DEBUG)
 476                         System.out.println("PipingRules.updateInlineControlPoints() " + u);
 477
 478                 if (!u.hasOffsets) {
 479
 480                         Vector3d start = new Vector3d(u.startPoint);
 481                         Vector3d end = new Vector3d(u.endPoint);
 482                         // create offsets.
 483                         MathTools.mad(start, u.dir, u.start.getInlineLength());
 484                         MathTools.mad(end, u.dir, -u.end.getInlineLength());
 485                         for (PipeControlPoint icp : u.list) {
 486                                 updateInlineControlPoint(icp, start, end, u.dir);
 487
 488                                 if (icp.isOffset()) {
 489                                         // TODO : offset vector is already calculated and should be cached
 490                                         Vector3d off = icp.getSizeChangeOffsetVector(u.dir);
 491                                         updateOffsetPoint(icp, off);
 492                                 }
 493                         }
 494                         if (!checkSizes)
 495                                 return;
 496
 497                         ArrayList<PipeControlPoint> pathLegPoints = new ArrayList<PipeControlPoint>();
 498                         pathLegPoints.add(u.start);
 499                         for (PipeControlPoint icp : u.list) {
 500                                 // updateInlineControlPoint(icp, u.startPoint,
 501                                 // u.endPoint,u.dir);
 502                                 updateBranchControlPointBranches(icp);
 503                                 pathLegPoints.add(icp);
 504                         }
 505                         pathLegPoints.add(u.end);
 506
 507                         // TODO : values can be cached in the loop
 508                         for (int i = 1; i < pathLegPoints.size(); i++) {
 509                                 PipeControlPoint icp = pathLegPoints.get(i);
 510
 511                                 PipeControlPoint prev = pathLegPoints.get(i - 1);
 512
 513
 514                                 if (icp.isVariableLength()) {
 515                                         if (i != pathLegPoints.size() - 1) {
 516                                                 PipeControlPoint next = pathLegPoints.get(i + 1);
 517                                                 updateVariableLength(icp,  prev, next);
 518
 519                                         } else {
 520                                                 // this is variable length component at the end of the
 521                                                 // piperun.
 522                                                 // the problem is that we want to keep unconnected end
 523                                                 // of the component in the same
 524                                                 // place, but center of the component must be moved.
 525                                                 updateVariableLengthEnd(icp, prev);
 526                                         }
 527
 528
 529                                 } else if (!prev.isVariableLength()) {
 530                                         // If this and previous control point are not variable
 531                                         // length pcps, we'll have to check if there is no empty
 532                                         // space between them.
 533                                         // I there is, we'll have to create new variable length
 534                                         // component between them.
 535                                         Vector3d currentPos = icp.getWorldPosition();
 536                                         Vector3d prevPos = prev.getWorldPosition();
 537                                         Vector3d dir = new Vector3d(currentPos);
 538                                         dir.sub(prevPos);
 539                                         double l = dir.lengthSquared();
 540                                         double l2prev = prev.getInlineLength();
 541                                         double l2next = icp.getInlineLength();
 542                                         double l2 = l2prev + l2next;
 543                                         double l2s = l2 * l2;
 544                                         if (l > l2s) {
 545                                                 if (allowInsertRemove) {
 546                                                         dir.normalize();
 547                                                         double length = Math.sqrt(l) - l2; // true length of the
 548                                                                                                                                 // variable length
 549                                                                                                                                 // component
 550                                                         dir.scale(length * 0.5 + l2prev); // calculate center
 551                                                                                                                                 // position of the
 552                                                                                                                                 // component
 553                                                         dir.add(prevPos);
 554                                                         PipeControlPoint scp = insertStraight(prev, icp, dir, length);
 555                                                 } else {
 556                                                         triedIR = true;
 557                                                 }
 558                                         }
 559                                 }
 560                         }
 561                 } else { // with offset
 562                         Vector3d sp = new Vector3d(u.startPoint);
 563                         Vector3d ep = new Vector3d(u.endPoint);
 564                         ep.sub(u.offset);
 565
 566                         ArrayList<PipeControlPoint> pathLegPoints = new ArrayList<PipeControlPoint>();
 567                         pathLegPoints.add(u.start);
 568
 569                         for (PipeControlPoint icp : u.list) {
 570                                 updateInlineControlPoint(icp, sp, ep, u.dir);
 571                                 updateBranchControlPointBranches(icp);
 572                                 pathLegPoints.add(icp);
 573                                 if (icp.isOffset()) {
 574                                         // TODO : offset vector is already calculated and should be
 575                                         // cached
 576                                         Vector3d  offset = icp.getSizeChangeOffsetVector(u.dir);
 577                                         updateOffsetPoint(icp, offset);
 578                                         sp.add(offset);
 579                                         ep.add(offset);
 580                                 }
 581                         }
 582                         pathLegPoints.add(u.end);
 583
 584                         sp = new Vector3d(u.startPoint);
 585                         ep = new Vector3d(u.endPoint);
 586                         ep.sub(u.offset);
 587
 588                         for (int i = 1; i < pathLegPoints.size(); i++) {
 589                                 PipeControlPoint icp = pathLegPoints.get(i);
 590
 591                                 PipeControlPoint prev = pathLegPoints.get(i - 1);
 592                                 if (prev.isDualInline())
 593                                         prev = prev.getSubPoint().get(0);
 594
 595
 596                                 if (icp.isVariableLength()) {
 597                                         if (i != pathLegPoints.size() - 1) {
 598                                                 PipeControlPoint next;
 599                                                 next = pathLegPoints.get(i + 1);
 600                                                 updateVariableLength(icp,  prev, next);
 601
 602                                         } else {
 603                                                 // this is variable length component at the end of the
 604                                                 // piperun.
 605                                                 // the problem is that we want to keep unconnected end
 606                                                 // of the component in the same
 607                                                 // place, but center of the component must be moved.
 608                                                 updateVariableLengthEnd(icp, prev);
 609                                         }
 610                                 } else if (icp.isOffset()) {
 611                                         // TODO : offset vector is already calculated and should be
 612                                         // cached
 613                                         Vector3d  offset = icp.getSizeChangeOffsetVector(u.dir);
 614                                         sp.add(offset);
 615                                         ep.add(offset);
 616                                 }
 617                         }
 618                 }
 619         }
 620
 621         private static void updateVariableLength(PipeControlPoint icp, PipeControlPoint prev,  PipeControlPoint next) {
 622                 Vector3d prevPos = prev.getWorldPosition();
 623                 Vector3d nextPos = next.getWorldPosition();
 624
 625                 Vector3d dir = new Vector3d(nextPos);
 626                 dir.sub(prevPos);
 627                 double l = dir.lengthSquared(); // distance between
 628                                                                                 // control points
 629                                                                                 // (square)
 630                 double l2prev = prev.getInlineLength(); // distance
 631                                                                                                                                         // taken
 632                                                                                                                                         // by
 633                                                                                                                                         // components
 634                 double l2next = next.getInlineLength();
 635                 double l2 = l2prev + l2next;
 636                 double l2s = MathTools.square(l2);
 637                 if (l2s < l) { // check if there is enough space for
 638                                                 // variable length component.
 639                         // components fit
 640                         dir.normalize();
 641                         double length = Math.sqrt(l) - l2; // true length of
 642                                                                                                 // the variable
 643                                                                                                 // length
 644                                                                                                 // component
 645                         dir.scale(length * 0.5 + l2prev); // calculate
 646                                                                                                 // center
 647                                                                                                 // position of
 648                                                                                                 // the component
 649                         dir.add(prevPos);
 650                         icp.setWorldPosition(dir);
 651                         icp.setLength(length);
 652                 } else {
 653                         // components leave no space to the component and it
 654                         // must be removed
 655
 656                         if (icp.isDeletable()) {
 657                                 if (DEBUG)
 658                                         System.out.println("PipingRules.updateVariableLength removing " + icp);
 659                                 icp._remove();
 660                         }
 661                 }
 662         }
 663
 664         private static void updateVariableLengthEnd(PipeControlPoint icp,  PipeControlPoint prev) {
 665                 double currentLength = icp.getLength();
 666                 Vector3d currentPos = icp.getWorldPosition();
 667                 Vector3d prevPos = prev.getWorldPosition();
 668
 669                 Vector3d dir = new Vector3d();
 670                 dir.sub(currentPos, prevPos);
 671
 672                 if (currentLength < MathTools.NEAR_ZERO) {
 673                         currentLength = (dir.length() - prev.getInlineLength()) * 2.0;
 674                 }
 675
 676                 if (dir.lengthSquared() > MathTools.NEAR_ZERO)
 677                         dir.normalize();
 678                 Point3d endPos = new Point3d(dir);
 679                 endPos.scale(currentLength * 0.5);
 680                 endPos.add(currentPos); // this is the free end of the
 681                                                                 // component
 682
 683                 double offset = prev.getInlineLength();
 684                 Point3d beginPos = new Point3d(dir);
 685                 beginPos.scale(offset);
 686                 beginPos.add(prevPos); // this is the connected end of
 687                                                                 // the component
 688
 689                 double l = beginPos.distance(endPos);
 690
 691                 if (Double.isNaN(l))
 692                         System.out.println("Length for " + icp + " is NaN");
 693
 694                 dir.scale(l * 0.5);
 695                 beginPos.add(dir); // center position
 696
 697                 if (DEBUG)
 698                         System.out.println("PipingRules.updateInlineControlPoints() setting variable length to " + l);
 699                 icp.setLength(l);
 700
 701                 icp.setWorldPosition(new Vector3d(beginPos));
 702         }
 703
 704         private static void ppNoOffset(UpdateStruct2 u) throws Exception {
 705                 if (DEBUG)
 706                         System.out.println("PipingRules.ppNoOffset() " + u);
 707                 Vector3d offset = new Vector3d();
 708                 if (u.hasOffsets) {
 709                         u.dir.normalize();
 710                         for (PipeControlPoint icp : u.list) {
 711                                 if (icp.isOffset()) {
 712                                         offset.add(icp.getSizeChangeOffsetVector(u.dir));
 713                                 } else if (icp.isDualSub())
 714                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
 715                         }
 716                 }
 717                 u.offset = offset;
 718                 checkExpandPathLeg(u, PathLegUpdateType.NONE);
 719         }
 720
 721         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 {
 722                 if (DEBUG)
 723                         System.out.println("PipingRules.ppNoDir() " + start + " " + end + " " + iter + " " + toRemove.size());
 724                 // FIXME : extra loop (dir should be calculated here)
 725                 Vector3d dir = new Vector3d();
 726                 Vector3d offset = new Vector3d();
 727                 hasOffsets = calculateOffset(startPoint, endPoint, list, dir, offset);
 728                 ppNoOffset(new UpdateStruct2(start, startPoint, list, end, endPoint, dir, null, hasOffsets, iter, reversed, toRemove, updated));
 729         }
 730
 731         private static void checkExpandPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 732                 checkExpandPathLeg(u, lengthChange, u.updated.isInline() && u.updated.isOffset());
 733         }
 734
 735         private static void checkExpandPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange, boolean updateEnds) throws Exception {
 736                 if (DEBUG)
 737                         System.out.println("PipingRules.checkExpandPathLeg() " + u + " " + lengthChange);
 738                 if (lengthChange != PathLegUpdateType.NONE) {
 739                         // FIXME : turns cannot be checked before inline cps are updated,
 740                         // since their position affects calculation of turns
 741                         processPathLeg(u, updateEnds, false);
 742                         int type = checkTurns(u, lengthChange);
 743                         if (type == REMOVE_NONE) {
 744                                 processPathLeg(u, updateEnds, true);
 745                         } else {
 746                                 expandPathLeg(u, type);
 747                         }
 748                 } else {
 749                         processPathLeg(u, updateEnds, true);
 750                 }
 751         }
 752
 753         private static void updateDirectedPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 754                 if (DEBUG)
 755                         System.out.println("PipingRules.updateDirectedPipeRun() " + u + " " + lengthChange);
 756                 PipeControlPoint dcp;
 757                 PipeControlPoint other;
 758                 boolean canMoveOther = false;
 759                 boolean dcpStart = false;
 760                 boolean inlineEnd = false;
 761                 Vector3d position;
 762                 if (u.start.isDirected()) {
 763                         dcp = u.start;
 764                         other = u.end;
 765                         position = u.startPoint;
 766                         dcpStart = true;
 767                         if (!u.reversed)
 768                                 canMoveOther = true;
 769                         inlineEnd = u.end.isInline();
 770
 771                 } else {
 772                         dcp = u.end;
 773                         other = u.start;
 774                         position = u.endPoint;
 775                         if (u.reversed)
 776                                 canMoveOther = true;
 777                         inlineEnd = u.start.isInline();
 778                 }
 779
 780                 Vector3d directedDirection = dcp.getDirection();
 781                 Point3d directedEndPoint = new Point3d(u.endPoint);
 782                 if (u.hasOffsets)
 783                         directedEndPoint.add(u.offset);
 784
 785                 double mu[] = new double[2];
 786
 787                 Vector3d closest;
 788                 Vector3d t = new Vector3d();
 789
 790                 if (dcpStart) {
 791                         closest = MathTools.closestPointOnStraight(directedEndPoint, u.startPoint, directedDirection, mu);
 792                         t.sub(closest, directedEndPoint);
 793                 } else {
 794                         closest = MathTools.closestPointOnStraight(u.startPoint, directedEndPoint, directedDirection, mu);
 795                         t.sub(closest, u.startPoint);
 796                 }
 797
 798                 double distance = t.length();
 799                 boolean aligned = (distance < ALLOWED_OFFSET);
 800                 if (aligned) {
 801                         checkExpandPathLeg(u, lengthChange, inlineEnd);
 802
 803                 } else {
 804                         if (u.iter > 0) {
 805                                 backIter(u);
 806                         } else {
 807                                 PipeControlPoint nextToMoved;
 808
 809                                 if (u.list.size() > 0)
 810                                         if (dcpStart)
 811                                                 nextToMoved = u.list.get(0);
 812                                         else
 813                                                 nextToMoved = u.list.get(u.list.size() - 1);
 814                                 else if (dcpStart)
 815                                         nextToMoved = u.end;
 816                                 else
 817                                         nextToMoved = u.start;
 818                                 if (other.isVariableAngle()) {
 819
 820                                         // TODO calculate needed space from next run end.
 821                                         if (mu[0] < 1.0) {
 822                                                 if (dcpStart) {
 823                                                         closest.set(u.startPoint);
 824                                                 } else {
 825                                                         closest.set(u.endPoint);
 826                                                 }
 827                                                 Vector3d v = new Vector3d(directedDirection);
 828                                                 v.scale(spaceForTurn(other));
 829                                                 closest.add(v);
 830                                         }
 831
 832                                         if (canMoveOther) {
 833                                                 if (DEBUG)
 834                                                         System.out.println("PipingRules.updateDirectedPipeRun() moved end " + other + " to " + closest);
 835                                                 other.setWorldPosition(closest);
 836                                                 if (dcpStart) {
 837                                                         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));
 838                                                         if (u.end.getNext() != null)
 839                                                                 updatePathLegNext(u.end, u.updated, PathLegUpdateType.NEXT);
 840                                                 } else {
 841                                                         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));
 842                                                         if (u.start.getPrevious() != null)
 843                                                                 updatePathLegPrev(u.start, u.updated, PathLegUpdateType.PREV);
 844                                                 }
 845                                         } else {
 846                                                 // TODO : calculate needed space from next run end.
 847                                                 if (allowInsertRemove)
 848                                                         insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 849
 850                                                 else
 851                                                         triedIR = true;
 852                                         }
 853                                 } else if (other.isNonDirected() && other.getParentPoint() != null) {
 854                                         // FIXME : this code was for updating branches
 855                                         Vector3d bintersect = new Vector3d();
 856                                         PipeControlPoint bcp = other.getParentPoint();
 857                                         if (bcp != null && canMoveOther) {
 858                                                 Point3d bstart = new Point3d();
 859                                                 Point3d bend = new Point3d();
 860                                                 Vector3d bdir = new Vector3d();
 861                                                 bcp.getInlineControlPointEnds(bstart, bend, bdir);
 862                                                 Vector3d nintersect = new Vector3d();
 863
 864                                                 MathTools.intersectStraightStraight(position, directedDirection, bend, bdir, nintersect, bintersect, mu);
 865                                                 Vector3d dist = new Vector3d(nintersect);
 866                                                 dist.sub(bintersect);
 867                                                 canMoveOther = mu[1] > 0.0 && mu[1] < 1.0 && dist.lengthSquared() < 0.01;
 868                                         } else {
 869                                                 // TODO : endControlPoints are undirected: calculcate
 870                                                 // correct position for it
 871                                                 throw new UnsupportedOperationException("not implemented");
 872                                         }
 873                                         if (canMoveOther) {
 874                                                 if (DEBUG)
 875                                                         System.out.println("PipingRules.updateDirectedPipeRun() moved end " + other + " to " + bintersect);
 876                                                 // is required branch position is in possible range
 877                                                 bcp.setWorldPosition(bintersect);
 878                                                 if (dcpStart) {
 879                                                         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);
 880                                                 } else {
 881                                                         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);
 882                                                 }
 883                                         } else {
 884                                                 // branch cannot be moved into right position, new turn
 885                                                 // / elbow must be inserted
 886                                                 if (allowInsertRemove)
 887                                                         insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 888                                                 else
 889                                                         triedIR = true;
 890                                         }
 891
 892                                 } else { // assume that control point cannot be moved, but can
 893                                                         // be rotated
 894                                         if (allowInsertRemove)
 895                                                 insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection);
 896                                         else
 897                                                 triedIR = true;
 898                                 }
 899                         }
 900                 }
 901
 902
 903         }
 904
 905         private static void updateDualDirectedPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
 906                 if (DEBUG)
 907                         System.out.println("PipingRules.updateDualDirectedPipeRun() " + u + " " + lengthChange);
 908
 909                 PipeControlPoint dcp1 = u.start;
 910                 PipeControlPoint dcp2 = u.end;
 911                 Point3d position1 = new Point3d(u.startPoint);
 912                 Point3d position2 = new Point3d(u.endPoint);
 913                 Point3d position1offset = new Point3d(position1);
 914                 position1offset.sub(u.offset);
 915                 Point3d position2offset = new Point3d(position2);
 916                 position2offset.add(u.offset);
 917                 Vector3d dir1 = dcp1.getDirection();
 918                 Vector3d dir2 = dcp2.getDirection();
 919                 Vector3d p1 = MathTools.closestPointOnStraight(position1offset, position2, dir2);
 920                 Vector3d p2 = MathTools.closestPointOnStraight(position2offset, position1, dir1);
 921                 double d1 = position1.distance(new Point3d(p1));
 922                 double d2 = position2.distance(new Point3d(p2));
 923
 924                 boolean aligned = (d1 < ALLOWED_OFFSET && d2 < ALLOWED_OFFSET);
 925                 if (aligned) {
 926                         processPathLeg(u);
 927                 } else {
 928                         if (u.iter > 0) {
 929                                 backIter(u);
 930                         } else if (allowInsertRemove){
 931                                 PipeControlPoint dcp;
 932                                 PipeControlPoint next;
 933                                 if (!u.reversed) {
 934                                         dcp = dcp1;
 935                                         if (u.list.size() > 0)
 936                                                 next = u.list.get(0);
 937                                         else
 938                                                 next = dcp2;
 939                                 } else {
 940                                         dcp = dcp2;
 941                                         if (u.list.size() > 0)
 942                                                 next = u.list.get(u.list.size() - 1);
 943                                         else
 944                                                 next = dcp1;
 945                                 }
 946
 947                                 p1 = dcp.getWorldPosition();
 948                                 // FIXME: calculate position of the elbows properly.
 949                                 if (!u.reversed)
 950                                         p1.add(dir1);
 951                                 else
 952                                         p1.add(dir2);
 953
 954                                 if (!u.reversed)
 955                                         p2 = MathTools.closestPointOnStraight(new Point3d(p1), position2, dir2);
 956                                 else
 957                                         p2 = MathTools.closestPointOnStraight(new Point3d(p1), position1, dir1);
 958
 959
 960                                 PipeControlPoint tcp1 = insertElbow(dcp, next, p1);
 961                                 PipeControlPoint tcp2 = insertElbow(tcp1, next, p2);
 962
 963                                 if (DEBUG)
 964                                         System.out.println("PipingRules.updateDualDirectedPipeRun() created two turns " + tcp1 + " " + tcp2);
 965
 966                                 if (!u.reversed) {
 967                                         Vector3d dd = new Vector3d(p2);
 968                                         dd.sub(p1);
 969                                         dir2.negate();
 970                                         updatePathLegNext(u.start, u.updated, PathLegUpdateType.NONE);
 971                                         updatePathLegNext(tcp1, u.updated, PathLegUpdateType.NONE);
 972                                         if (!u.reversed)
 973                                                 updatePathLegNext(tcp2, u.updated, PathLegUpdateType.NONE);
 974                                         else
 975                                                 updatePathLegPrev(tcp2, u.updated, PathLegUpdateType.NONE);
 976                                 } else {
 977                                         Vector3d dd = new Vector3d(p1);
 978                                         dd.sub(p2);
 979                                         dir2.negate();
 980                                         updatePathLegNext(tcp1, u.updated, PathLegUpdateType.NONE);
 981                                         updatePathLegNext(tcp2, u.updated, PathLegUpdateType.NONE);
 982                                         if (!u.reversed)
 983                                                 updatePathLegNext(u.start, u.updated, PathLegUpdateType.NONE);
 984                                         else
 985                                                 updatePathLegPrev(u.start, u.updated, PathLegUpdateType.NONE);
 986                                 }
 987                         } else {
 988                                 triedIR = true;
 989                         }
 990                 }
 991
 992         }
 993
 994         private static double spaceForTurn(PipeControlPoint tcp) {
 995                 // TODO : this returns now space for 90 deg turn.
 996                 // The challenge: position of tcp affects the turn angle, which then affects the required space. Perhaps we need to iterate...
 997                 // Additionally, if the path legs contain offset, using just positions of opposite path leg ends is not enough,
 998                 return tcp.getPipeRun().getTurnRadius();
 999         }
1000
1001         private static void insertElbowUpdate(UpdateStruct2 u, PipeControlPoint dcp, PipeControlPoint next, boolean dcpStart, Vector3d position, Vector3d directedDirection) throws Exception{
1002
1003
1004 //              Vector3d closest = new Vector3d(position);
1005 //              closest.add(directedDirection);
1006
1007                 PipeControlPoint tcp = null;
1008                 Vector3d closest;
1009                 if (dcpStart) {
1010                         closest = MathTools.closestPointOnStraight(next.getWorldPosition(), position, directedDirection);
1011                         tcp = insertElbow(dcp, next, closest);
1012                 } else {
1013                         closest = MathTools.closestPointOnStraight(dcp.getWorldPosition(), position, directedDirection);
1014                         tcp = insertElbow(next, dcp, closest);
1015                 }
1016                 // TODO properly calculate required distance between start and inserted elbow.
1017                 double d = MathTools.distance(position, closest);
1018                 double s = spaceForTurn(tcp);
1019                 if (d < s)  {
1020                         d = s - d;
1021                         Vector3d p = new Vector3d(directedDirection);
1022                         p.scale(d);
1023                         p.add(closest);
1024                         tcp.setPosition(p);
1025                         closest = p;
1026                 }
1027
1028
1029
1030                 if (DEBUG)
1031                         System.out.println("PipingRules.updateDirectedPipeRun() inserted " + tcp);
1032
1033                 if (dcpStart) {
1034                         // update pipe run from new turn to other end
1035                         ppNoDir(tcp, new Vector3d(closest), u.list, u.end, u.endPoint, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated);
1036                         // update pipe run from directed to new turn
1037                         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));
1038                 } else {
1039                         // update pipe run from other end to new turn
1040                         ppNoDir(u.start, u.startPoint, u.list, tcp, new Vector3d(closest), u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated);
1041                         // update pipe run from new turn to directed
1042                         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));
1043                 }
1044         }
1045
1046         /**
1047          * Checks if turns can be removed (turn angle near zero)
1048          */
1049         private static int checkTurns(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception {
1050                 if (DEBUG)
1051                         System.out.println("PipingRules.checkTurns() " + u.start + " " + u.end);
1052                 boolean startRemoved = false;
1053                 boolean endRemoved = false;
1054                 if (u.start.isVariableAngle()) {
1055                         // this won't work properly if inline control points are not updated
1056                         PipeControlPoint startPrev = u.start.getPrevious();
1057                         if (startPrev != null) {
1058                                 double a;
1059                                 if (!u.hasOffsets) {
1060                                         a = updateTurnControlPointTurn(u.start, startPrev, u.end);
1061                                 } else {
1062                                         Vector3d ep = new Vector3d(u.endPoint);
1063                                         ep.sub(u.offset);
1064                                         a = updateTurnControlPointTurn(u.start, u.startPoint, startPrev.getPosition(), ep);
1065
1066                                 }
1067                                 if (a < MIN_TURN_ANGLE && u.start.isDeletable())
1068                                         startRemoved = true;
1069                                 else if (lengthChange == PathLegUpdateType.PREV || lengthChange == PathLegUpdateType.PREV_S) {
1070                                         PathLegUpdateType type;
1071                                         if (lengthChange == PathLegUpdateType.PREV_S)
1072                                                 type = PathLegUpdateType.PREV;
1073                                         else
1074                                                 type = PathLegUpdateType.NONE;
1075                                         updatePathLegPrev(u.start, u.start, type);
1076                                 }
1077                         }
1078                 }
1079                 if (u.end.isVariableAngle()) {
1080
1081                         PipeControlPoint endNext = u.end.getNext();
1082                         if (endNext != null) {
1083                                 double a;
1084                                 if (!u.hasOffsets) {
1085                                         a = updateTurnControlPointTurn(u.end, u.start, endNext);
1086                                 } else {
1087                                         Vector3d sp = new Vector3d(u.startPoint);
1088                                         sp.add(u.offset);
1089                                         a = updateTurnControlPointTurn(u.end, u.endPoint, sp, endNext.getPosition());
1090                                 }
1091                                 if (a < MIN_TURN_ANGLE && u.end.isDeletable())
1092                                         endRemoved = true;
1093                                 else if (lengthChange == PathLegUpdateType.NEXT || lengthChange == PathLegUpdateType.NEXT_S) {
1094                                         PathLegUpdateType type;
1095                                         if (lengthChange == PathLegUpdateType.NEXT_S)
1096                                                 type = PathLegUpdateType.NEXT;
1097                                         else
1098                                                 type = PathLegUpdateType.NONE;
1099                                         updatePathLegNext(u.end, u.end, type);
1100                                 }
1101                         }
1102                 }
1103                 if (DEBUG)
1104                         System.out.println("PipingRules.checkTurns() res " + startRemoved + " " + endRemoved);
1105                 if (!startRemoved && !endRemoved)
1106                         return REMOVE_NONE;
1107                 if (startRemoved && endRemoved)
1108                         return REMOVE_BOTH;
1109                 if (startRemoved)
1110                         return REMOVE_START;
1111                 return REMOVE_END;
1112         }
1113
1114         /**
1115          * Expands piperun search over turns that are going to be removed
1116          *
1117          */
1118         private static void expandPathLeg(UpdateStruct2 u, int type) throws Exception {
1119                 if (DEBUG)
1120                         System.out.println("PipingRules.expandPipeline " + u.start + " " + u.end);
1121                 ArrayList<PipeControlPoint> newList = new ArrayList<PipeControlPoint>();
1122                 switch (type) {
1123                 case REMOVE_NONE:
1124                         throw new RuntimeException("Error in piping rules");
1125                 case REMOVE_START:
1126                         u.toRemove.add(new ExpandIterInfo(u.start, REMOVE_START));
1127                         u.start = u.start.findPreviousEnd();
1128                         u.startPoint = u.start.getPosition();
1129                         u.start.findNextEnd(newList);
1130                         newList.addAll(u.list);
1131                         u.list = newList;
1132                         break;
1133                 case REMOVE_END:
1134                         u.toRemove.add(new ExpandIterInfo(u.end, REMOVE_END));
1135                         u.end = u.end.findNextEnd(newList);
1136                         u.endPoint = u.end.getPosition();
1137                         u.list.addAll(newList);
1138                         break;
1139                 case REMOVE_BOTH:
1140                         u.toRemove.add(new ExpandIterInfo(u.start, u.end));
1141                         u.start = u.start.findPreviousEnd();
1142                         u.startPoint = u.start.getPosition();
1143                         u.start.findNextEnd(newList);
1144                         newList.addAll(u.list);
1145                         u.list = newList;
1146                         newList = new ArrayList<PipeControlPoint>();
1147                         u.end = u.end.findNextEnd(newList);
1148                         u.endPoint = u.end.getPosition();
1149                         u.list.addAll(newList);
1150                         break;
1151                 default:
1152                         throw new RuntimeException("Error in piping rules");
1153
1154                 }
1155                 u.offset = new Vector3d();
1156                 if (u.hasOffsets) {
1157                         u.dir.normalize();
1158                         for (PipeControlPoint icp : u.list) {
1159                                 if (icp.isOffset()) {
1160                                         u.offset.add(icp.getSizeChangeOffsetVector(u.dir));
1161                                 } else if (icp.isDualSub())
1162                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1163                         }
1164                 }
1165                 if (DEBUG)
1166                         System.out.println("PipingRules.expandPipeline expanded " + u.start + " " + u.end);
1167                 u.iter++;
1168                 updatePathLeg(u, PathLegUpdateType.NONE);
1169         }
1170
1171         /**
1172          * reverts one iteration of turn removing back)
1173          */
1174         private static void backIter(UpdateStruct2 u) throws Exception {
1175
1176                 if (DEBUG)
1177                         System.out.println("PipingRules.backIter" + u.start + " " + u.end);
1178                 if (u.iter == 0)
1179                         throw new RuntimeException("Error in piping rules");
1180                 ExpandIterInfo info = u.toRemove.get(u.toRemove.size() - 1);
1181                 u.toRemove.remove(u.toRemove.size() - 1);
1182                 if (info.getType() == REMOVE_START || info.getType() == REMOVE_BOTH) {
1183                         while (u.list.size() > 0) {
1184                                 PipeControlPoint icp = u.list.get(0);
1185                                 if (icp.getPrevious().equals(info.getStart()))
1186                                         break;
1187                                 u.list.remove(icp);
1188                         }
1189                         u.start = info.getStart();
1190                 }
1191                 if (info.getType() == REMOVE_END || info.getType() == REMOVE_BOTH) {
1192                         while (u.list.size() > 0) {
1193                                 PipeControlPoint icp = u.list.get(u.list.size() - 1);
1194                                 if (icp.getNext().equals(info.getEnd()))
1195                                         break;
1196                                 u.list.remove(icp);
1197                         }
1198                         u.end = info.getEnd();
1199                 }
1200                 u.offset = new Vector3d();
1201                 if (u.hasOffsets) {
1202                         u.dir.normalize();
1203                         for (PipeControlPoint icp : u.list) {
1204                                 if (icp.isOffset()) {
1205                                         u.offset.add(icp.getSizeChangeOffsetVector(u.dir));
1206                                 } else if (icp.isDualSub())
1207                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1208                         }
1209                 }
1210                 processPathLeg(u);
1211
1212         }
1213
1214         /**
1215          * Processes pipe run (removes necessary turns and updates run ends)
1216          */
1217         // private static void processPathLeg(PipeControlPoint start, Point3d
1218         // startPoint,ArrayList<InlineControlPoint> list, PipeControlPoint
1219         // end,Point3d endPoint, Vector3d dir,Vector3d offset, boolean
1220         // hasOffsets,int iter, boolean reversed, ArrayList<ExpandIterInfo>
1221         // toRemove) throws TransactionException {
1222
1223         private static void processPathLeg(UpdateStruct2 u) throws Exception {
1224                 if (DEBUG)
1225                         System.out.println("PipingRules.processPathLeg " + u.start + " " + u.end);
1226                 processPathLeg(u, true, true);
1227         }
1228
1229         private static void processPathLeg(UpdateStruct2 u, boolean updateEnds, boolean updateInline) throws Exception {
1230                 if (DEBUG)
1231                         System.out.println("PipingRules.processPathLeg " + (updateEnds ? "ends " : "") + (updateInline ? "inline " : "") + u.start + " " + u.end);
1232
1233                 if (u.toRemove.size() > 0) {
1234                         for (ExpandIterInfo info : u.toRemove) {
1235                                 if (info.getStart() != null) {
1236                                         if (DEBUG)
1237                                                 System.out.println("PipingRules.processPathLeg removing start " + info.getStart());
1238                                         info.getStart()._remove();
1239                                 }
1240                                 if (info.getEnd() != null) {
1241                                         if (DEBUG)
1242                                                 System.out.println("PipingRules.processPathLeg removing end " + info.getEnd());
1243                                         info.getEnd()._remove();
1244                                 }
1245                         }
1246                         // ControlPointTools.removeControlPoint may remove mo0re than one
1247                         // CP;
1248                         // we must populate inline CP list again.
1249                         u.list.clear();
1250                         u.start.findNextEnd( u.list);
1251                 }
1252                 // FIXME : inline CPs are update twice because their positions must be
1253                 // updated before and after ends.
1254                 updateInlineControlPoints(u, false);
1255
1256                 if (updateEnds) {
1257                         if (u.start.isTurn()) {
1258                                 updateTurnControlPointTurn(u.start, u.start.getPrevious(), u.start.getNext());
1259 //                              updatePathLegPrev(u.start, u.start, PathLegUpdateType.NONE);
1260                         } else if (u.start.isEnd()) {
1261                                 updateEndComponentControlPoint(u.start, u.startPoint, u.endPoint);
1262                         } else if (u.start.isInline()) {
1263                                 updateControlPointOrientation(u.start);
1264                         }
1265                         if (u.end.isTurn()) {
1266                                 updateTurnControlPointTurn(u.end, u.end.getPrevious(), u.end.getNext());
1267 //                              updatePathLegNext(u.end, u.end, PathLegUpdateType.NONE);
1268                         } else if (u.end.isEnd()) {
1269                                 updateEndComponentControlPoint(u.end, u.startPoint, u.endPoint);
1270                         } else if (u.end.isInline()) {
1271                                 updateControlPointOrientation(u.end);
1272                         }
1273
1274                 } else {
1275                         if (u.start.isEnd()) {
1276                                 updateEndComponentControlPoint(u.start, u.startPoint, u.endPoint);
1277                         }
1278                         if (u.end.isEnd()) {
1279                                 updateEndComponentControlPoint(u.end, u.startPoint, u.endPoint);
1280                         }
1281                 }
1282                 if (updateInline)
1283                         updateInlineControlPoints(u, true);
1284
1285         }
1286
1287         /**
1288          * Processes pipe run and recalculates offset
1289          */
1290         // private static void processPathLeg(PipeControlPoint start, Point3d
1291         // startPoint,ArrayList<InlineControlPoint> list, PipeControlPoint
1292         // end,Point3d endPoint, Vector3d dir, boolean hasOffsets,int iter, boolean
1293         // reversed, ArrayList<ExpandIterInfo> toRemove) throws TransactionException
1294         // {
1295         private static void processPathLegNoOffset(UpdateStruct2 u) throws Exception {
1296                 if (DEBUG)
1297                         System.out.println("PipingRules.processPathLeg " + u.start + " " + u.end);
1298                 Vector3d offset = new Vector3d();
1299                 if (u.hasOffsets) {
1300                         u.dir.normalize();
1301                         for (PipeControlPoint icp : u.list) {
1302                                 if (icp.isOffset()) {
1303                                         offset.add(icp.getSizeChangeOffsetVector(u.dir));
1304                                 } else if (icp.isDualSub()) {
1305                                         ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!"));
1306                                 }
1307                         }
1308                 }
1309                 processPathLeg(u);
1310         }
1311
1312         private static void updateOffsetPoint(PipeControlPoint sccp, Vector3d offset) {
1313                 Vector3d world = sccp.getWorldPosition();
1314                 world.add(offset);
1315                 PipeControlPoint ocp = sccp.getSubPoint().iterator().next();
1316                 ocp.setWorldPosition(world);
1317         }
1318
1319         /**
1320          * Updates InlineControlPoints position when straight pipe's end(s) have
1321          * been changed)
1322          *
1323          * @param pipeline
1324          * @param icp
1325          * @param nextPoint
1326          * @param prevPoint
1327          */
1328         private static void updateInlineControlPoint(PipeControlPoint icp, Vector3d prev, Vector3d next,  Vector3d dir) {
1329                 if (DEBUG)
1330                         System.out.println("PipingRules.updateInlineControlPoint() " + icp);
1331
1332                 Vector3d inlinePoint = icp.getWorldPosition();
1333                 Vector3d prevPoint = new Vector3d(prev);
1334                 Vector3d nextPoint = new Vector3d(next);
1335                 if (!icp.isVariableLength()) {
1336                         // Reserve space for fixed length components.
1337                         MathTools.mad(prevPoint, dir, icp.getInlineLength());
1338                         MathTools.mad(nextPoint, dir, -icp.getInlineLength());
1339                         if (MathTools.distance(prevPoint, nextPoint) < ALLOWED_OFFSET) {
1340                                 prevPoint = prev;
1341                                 nextPoint = next;
1342                         }
1343                 }
1344                 boolean canCalc = MathTools.distance(prevPoint, nextPoint) > ALLOWED_OFFSET;
1345                 if (DEBUG)
1346                         System.out.print("InlineControlPoint update " + icp + " " + inlinePoint + " " + prevPoint + " " + nextPoint);
1347                 Vector3d newInlinePoint = null;
1348                 if (canCalc) {
1349                         boolean branchUpdate = false;
1350                         PipeControlPoint becp = null;
1351                         for (PipeControlPoint pcp : icp.getSubPoint())
1352                                 if (pcp.isNonDirected()) {
1353                                         branchUpdate = true;
1354                                         becp = pcp;
1355                                         break;
1356                                 }
1357
1358                         if (DUMMY || !branchUpdate) {
1359                                 newInlinePoint = MathTools.closestPointOnEdge(new Vector3d(inlinePoint), prevPoint, nextPoint);
1360
1361                         } else {
1362
1363                                 // FIXME : can only handle one branch
1364                                 PipeControlPoint p = null;
1365                                 if (becp.getNext() != null) {
1366                                         p = becp.findNextEnd();
1367                                 } else if (becp.getPrevious() != null) {
1368                                         p = becp.findPreviousEnd();
1369                                 }
1370                                 if (p == null) {
1371                                         newInlinePoint = MathTools.closestPointOnEdge(new Vector3d(inlinePoint), prevPoint, nextPoint);
1372                                 } else if (canCalc){
1373                                         Vector3d branchLegEnd = p.getWorldPosition();
1374                                         Vector3d dir2 = new Vector3d(inlinePoint);
1375                                         dir2.sub(branchLegEnd);
1376                                         Vector3d dir1 = new Vector3d(nextPoint);
1377                                         dir1.sub(prevPoint);
1378                                         newInlinePoint = new Vector3d();
1379                                         double mu[] = new double[2];
1380                                         MathTools.intersectStraightStraight(new Vector3d(prevPoint), dir1, new Vector3d(branchLegEnd), dir2, newInlinePoint, new Vector3d(), mu);
1381                                         if (DEBUG)
1382                                                 System.out.println(mu[0]);
1383                                         // FIXME : reserve space
1384                                         if (mu[0] < 0.0) {
1385                                                 newInlinePoint = new Vector3d(prevPoint);
1386                                         } else if (mu[0] > 1.0) {
1387                                                 newInlinePoint = new Vector3d(nextPoint);
1388                                         }
1389                                 }
1390                         }
1391                 } else {
1392                         // prevPoint == nextPoint
1393                         newInlinePoint = new Vector3d(prevPoint);
1394                 }
1395                 if (DEBUG)
1396                         System.out.println(" " + newInlinePoint);
1397
1398                 icp.setWorldPosition(newInlinePoint);
1399                 updateControlPointOrientation(icp);
1400         }
1401
1402         /**
1403          * Updates InlineControlPoints position when straight pipe's end(s) have
1404          * been changed)
1405          *
1406          * @param pipeline
1407          * @param icp
1408          * @param nextPoint
1409          * @param prevPoint
1410          */
1411         private static void updateEndComponentControlPoint(PipeControlPoint ecp, Vector3d start, Vector3d end) throws Exception {
1412                 if (DEBUG)
1413                         System.out.println("PipingRules.updateEndComponentControlPoint() " + ecp);
1414                 // PipeControlPoint next = ecp.getNext();
1415                 // PipeControlPoint prev = ecp.getPrevious();
1416                 // if (next != null) {
1417                 // end = G3DTools.getPoint(next.getLocalPosition());
1418                 // start = G3DTools.getPoint(ecp.getLocalPosition());
1419                 // } else if (prev != null) {
1420                 // end = G3DTools.getPoint(ecp.getLocalPosition());
1421                 // start = G3DTools.getPoint(prev.getLocalPosition());
1422                 // } else {
1423                 // // TODO : warning?
1424                 // return;
1425                 // }
1426                 // Vector3d dir = new Vector3d (end);
1427                 // dir.sub(start);
1428                 // dir.normalize();
1429                 // G3DTools.setTuple(ecp.getDirection(), dir);
1430                 if (!ecp.isFixed())
1431                         updateControlPointOrientation(ecp);
1432
1433                 for (PipeControlPoint pcp : ecp.getSubPoint()) {
1434                         // TODO update position
1435                         updatePathLegEndControlPoint(pcp);
1436                 }
1437         }
1438
1439         private static void updateControlPointOrientation(PipeControlPoint pcp) {
1440                 // FIXME : hack to bypass variable length components orientation
1441 //              if (pcp.getAtMostOneRelatedObject(ProcessResource.g3dResource.HasWorldOrientation) == null)
1442 //                      return;
1443 //              if (pcp.rotationAngle == null)
1444 //                      return;
1445                 Double angleO = pcp.getRotationAngle();
1446                 double angle = 0.0;
1447                 if (angleO != null)
1448                         angle = angleO;
1449
1450                 Quat4d q = pcp.getControlPointOrientationQuat(angle);
1451                 pcp.setWorldOrientation(q);
1452         }
1453
1454         /**
1455          * Updates all branches when branch's position has been changed
1456          *
1457          * @param bcp
1458          */
1459         private static void updateBranchControlPointBranches(PipeControlPoint bcp) throws Exception {
1460                 if (DEBUG)
1461                         System.out.println("PipingRules.updateBranchControlPointBranches() " + bcp);
1462                 if (bcp.isDualInline())
1463                         return;
1464                 Collection<PipeControlPoint> branches = bcp.getSubPoint();
1465                 if (branches.size() == 0) {
1466                         if (DEBUG)
1467                                 System.out.println("No Branches found");
1468                         return;
1469                 }
1470
1471                 for (PipeControlPoint pcp : branches) {
1472                         updatePathLegEndControlPoint(pcp);
1473                 }
1474         }
1475
1476         /**
1477          * Recalculates turn control point's internal data (turn angle and offset)
1478          *
1479          * @param tcp
1480          * @param prev
1481          * @param next
1482          */
1483         private static double updateTurnControlPointTurn(PipeControlPoint tcp, PipeControlPoint prev, PipeControlPoint next) {
1484                 if (DEBUG)
1485                         System.out.println("PipingTools.updateTurnControlPointTurn()" + tcp);
1486                 if (next == null || prev == null)
1487                         return Math.PI; // FIXME : argh
1488                 Vector3d middlePoint = tcp.getWorldPosition();
1489                 Vector3d nextPoint = next.getWorldPosition();
1490                 Vector3d prevPoint = prev.getWorldPosition();
1491                 return updateTurnControlPointTurn(tcp, middlePoint, prevPoint, nextPoint);
1492         }
1493
1494         /**
1495          * Recalculates turn control point's internal data (turn angle and offset)
1496          *
1497          * @param tcp
1498          * @param middlePoint
1499          * @param nextPoint
1500          * @param prevPoint
1501          */
1502         private static double updateTurnControlPointTurn(PipeControlPoint tcp, Vector3d middlePoint, Vector3d prevPoint, Vector3d nextPoint) {
1503
1504                 Vector3d dir1 = new Vector3d(middlePoint);
1505                 dir1.sub(prevPoint);
1506                 Vector3d dir2 = new Vector3d(nextPoint);
1507                 dir2.sub(middlePoint);
1508                 if (DEBUG)
1509                         System.out.println("PipingTools.updateTurnControlPointTurn " + tcp + " " + prevPoint + " " + middlePoint + " " + nextPoint);
1510                 return updateTurnControlPointTurn(tcp, dir1, dir2);
1511         }
1512
1513         private static double updateTurnControlPointTurn(PipeControlPoint tcp, Vector3d dir1, Vector3d dir2) {
1514                 double turnAngle = dir1.angle(dir2);
1515
1516                 double angle = Math.PI - turnAngle;
1517
1518                 Vector3d turnAxis = new Vector3d();
1519                 turnAxis.cross(dir1, dir2);
1520                 if (turnAxis.lengthSquared() > MathTools.NEAR_ZERO) {
1521                         double elbowRadius = tcp.getPipelineComponent().getPipeRun().getTurnRadius();
1522                         double R = elbowRadius / Math.tan(angle * 0.5);
1523
1524                         turnAxis.normalize();
1525                         tcp.setTurnAngle(turnAngle);
1526                         tcp.setLength(R);// setComponentOffsetValue(R);
1527                         tcp.setTurnAxis(turnAxis);
1528 //                      tcp.setPosition(tcp.getPosition());
1529                 } else {
1530                         turnAngle = 0.0;
1531                         tcp.setTurnAngle(0.0);
1532                         tcp.setLength(0.0);
1533                         tcp.setTurnAxis(MathTools.Y_AXIS);
1534                 }
1535                 updateControlPointOrientation(tcp);
1536                 if (DEBUG)
1537                         System.out.println("PipingTools.updateTurnControlPointTurn " + dir1 + " " + dir2 + " " + turnAngle + " " + turnAxis);
1538                 return turnAngle;
1539         }
1540
1541         public static List<PipeControlPoint> getControlPoints(PipeRun pipeRun) {
1542                 List<PipeControlPoint> list = new ArrayList<PipeControlPoint>();
1543                 if (pipeRun.getControlPoints().size() == 0)
1544                         return list;
1545                 PipeControlPoint pcp = pipeRun.getControlPoints().iterator().next();
1546                 while (pcp.getPrevious() != null) {
1547                         PipeControlPoint prev = pcp.getPrevious();
1548                         if (prev.getPipeRun() != pipeRun)
1549                                 break;
1550                         pcp = prev;
1551                 }
1552                 if (pcp.isDualSub()) {
1553                         pcp = pcp.getParentPoint();
1554                 }
1555                 list.add(pcp);
1556                 while (pcp.getNext() != null) {
1557                         pcp = pcp.getNext();
1558                         if (pcp.getPipeRun() != pipeRun)
1559                                 break;
1560                         list.add(pcp);
1561                 }
1562                 return list;
1563         }
1564
1565         public static void reverse(PipeRun pipeRun) {
1566                 List<PipeControlPoint> list = getControlPoints(pipeRun);
1567                 if (list.size() <= 1)
1568                         return; // nothing to do.
1569
1570                 for (int i = 0 ; i < list.size(); i++) {
1571                         boolean first = i == 0;
1572                         boolean last = i == list.size() - 1;
1573                         PipeControlPoint current = list.get(i);
1574                         PipeControlPoint currentSub = null;
1575                         if (current.isDualInline())
1576                                 currentSub = current.getSubPoint().get(0);
1577                         if (first) {
1578                                 PipeControlPoint next = list.get(i+1);
1579                                 if (next.isDualInline())
1580                                         next = next.getSubPoint().get(0);
1581                                 current.setNext(null);
1582                                 current.setPrevious(next);
1583                                 if (currentSub != null) {
1584                                         currentSub.setNext(null);
1585                                         currentSub.setPrevious(next);
1586                                 }
1587                         } else if (last) {
1588                                 PipeControlPoint prev = list.get(i-1);
1589
1590                                 current.setPrevious(null);
1591                                 current.setNext(prev);
1592
1593                                 if (currentSub != null) {
1594                                         currentSub.setPrevious(null);
1595                                         currentSub.setNext(prev);
1596                                 }
1597                         } else {
1598                                 PipeControlPoint prev = list.get(i-1);
1599                                 PipeControlPoint next = list.get(i+1);
1600                                 if (next.isDualInline())
1601                                         next = next.getSubPoint().get(0);
1602
1603
1604                                 current.setPrevious(next);
1605                                 current.setNext(prev);
1606
1607                                 if (currentSub != null) {
1608                                         currentSub.setPrevious(next);
1609                                         currentSub.setNext(prev);
1610                                 }
1611
1612                         }
1613                 }
1614         }
1615
1616         public static void merge(PipeRun run1, PipeRun r2) {
1617                 Map<PipeControlPoint, Vector3d> positions = new HashMap<PipeControlPoint, Vector3d>();
1618                 Map<PipeControlPoint, Quat4d> orientations = new HashMap<PipeControlPoint, Quat4d>();
1619                 for (PipeControlPoint pcp : r2.getControlPoints()) {
1620                         positions.put(pcp, pcp.getWorldPosition());
1621                         orientations.put(pcp, pcp.getWorldOrientation());
1622                 }
1623                 for (PipeControlPoint pcp : r2.getControlPoints()) {
1624                         r2.deattachChild(pcp);
1625                         run1.addChild(pcp);
1626                         PipelineComponent component = pcp.getPipelineComponent();
1627                         if (component != null) {
1628                                 if (!(component instanceof Nozzle)) {
1629                                         component.deattach();
1630                                         run1.addChild(component);
1631                                 } else {
1632                                         Nozzle n = (Nozzle)component;
1633                                         n.setPipeRun(run1);
1634                                 }
1635                         }
1636                 }
1637                 r2.remove();
1638
1639         }
1640
1641         public static void validate(PipeRun pipeRun) {
1642                 if (pipeRun == null)
1643                         return;
1644                 Collection<PipeControlPoint> pcps = pipeRun.getControlPoints();
1645                 int count = 0;
1646                 for (PipeControlPoint pcp : pcps) {
1647                         if (pcp.getParentPoint() == null || pcp.getParentPoint().getPipeRun() != pipeRun)
1648                                 count++;
1649                 }
1650                 List<PipeControlPoint> runPcps = getControlPoints(pipeRun);
1651                 if (runPcps.size() != count) {
1652                         System.out.println("Run is not connected");
1653                 }
1654                 for (PipeControlPoint pcp : pcps) {
1655                         if (!pcp.isDirected())
1656                                 if (pcp.getNext() == null && pcp.getPrevious() == null)
1657                                         System.out.println("Orphan " + pcp);
1658                 }
1659                 for (PipeControlPoint pcp : pcps) {
1660                         if (pcp.getParentPoint() == null) {
1661                                 PipeControlPoint sub = null;
1662                                 if (pcp.isDualInline())
1663                                         sub = pcp.getSubPoint().get(0);
1664                                 PipeControlPoint next = pcp.getNext();
1665                                 PipeControlPoint prev = pcp.getPrevious();
1666                                 if (next != null) {
1667                                         if (!(next.getPrevious() == pcp || next.getPrevious() == sub)) {
1668                                                 System.out.println("Inconsistency between " + pcp + " -> " +next );
1669                                         }
1670                                 }
1671                                 if (prev != null) {
1672                                         PipeControlPoint prevParent = null;
1673                                         if (prev.isDualSub()) {
1674                                                 prevParent = prev.getParentPoint();
1675                                         } else if (prev.isDualInline()) {
1676                                                 System.out.println("Inconsistency between " + pcp + " <-- " +prev );
1677                                         }
1678                                         if (!(prev.getNext() == pcp && (prevParent == null || prevParent.getNext() == pcp))) {
1679                                                 System.out.println("Inconsistency between " + pcp + " <-- " +prev );
1680                                         }
1681                                 }
1682                         }
1683                 }
1684         }
1685
1686         public static void splitVariableLengthComponent(PipelineComponent newComponent, InlineComponent splittingComponent, boolean assignPos) throws Exception{
1687                 assert(!splittingComponent.getControlPoint().isFixed());
1688                 assert(!(newComponent instanceof  InlineComponent && !newComponent.getControlPoint().isFixed()));
1689                 PipeControlPoint newCP = newComponent.getControlPoint();
1690                 PipeControlPoint splittingCP = splittingComponent.getControlPoint();
1691                 PipeControlPoint nextCP = splittingCP.getNext();
1692                 PipeControlPoint prevCP = splittingCP.getPrevious();
1693
1694                 /* there are many different cases to insert new component when
1695                    it splits existing VariableLengthinlineComponent.
1696
1697                1. VariableLengthComponet is connected from both sides:
1698                   - insert new component between VariableLength component and component connected to it
1699                   - insert new VariableLengthComponent between inserted component and component selected in previous step
1700
1701                    2. VariableLengthComponent is connected from one side
1702                      - Use previous case or:
1703                      - Insert new component to empty end
1704                      - Insert new VariableLength component to inserted components empty end
1705
1706                    3. VariableLength is not connected to any component.
1707                      - Should not be possible, at least in current implementation.
1708                      - Could be done using second case
1709
1710                 */
1711
1712                 if (nextCP == null && prevCP == null) {
1713                         // this should not be possible
1714                         throw new RuntimeException("VariableLengthComponent " + splittingComponent + " is not connected to anything.");
1715                 }
1716                 double reservedLength = splittingComponent.getControlPoint().getLength();
1717                 double newLength = newComponent.getControlPoint().getLength();
1718
1719
1720                 Point3d next = new Point3d();
1721                 Point3d prev = new Point3d();
1722                 splittingCP.getInlineControlPointEnds(prev, next);
1723
1724                 Vector3d newPos = null;
1725                 if (assignPos) {
1726                         newPos = new Vector3d(prev);
1727                         Vector3d dir = new Vector3d(next);
1728                         dir.sub(prev);
1729                         dir.scale(0.5);
1730                         newPos.add(dir);
1731                         newComponent.setWorldPosition(newPos);
1732                 } else {
1733                         newPos = newComponent.getWorldPosition();
1734                 }
1735
1736
1737
1738                 Vector3d dir = new Vector3d(next);
1739                 dir.sub(prev);
1740                 dir.normalize();
1741                 dir.scale(newLength * 0.5);
1742                 Point3d vn = new Point3d(newPos);
1743                 Point3d vp = new Point3d(newPos);
1744                 vn.add(dir);
1745                 vp.sub(dir);
1746                 double ln = vn.distance(next);
1747                 double lp = vp.distance(prev);
1748                 vp.interpolate(prev, 0.5);
1749                 vn.interpolate(next, 0.5);
1750
1751
1752                 PipeControlPoint newVariableLengthCP = null;//insertStraight(pcp1, pcp2, pos, length);
1753                 if (nextCP == null) {
1754                         newCP.insert(splittingCP, Direction.NEXT);
1755                         newVariableLengthCP = insertStraight(newCP, Direction.NEXT, new Vector3d(vn), ln);
1756                         splittingCP.setWorldPosition(new Vector3d(vp));
1757 //                      ControlPointTools.setWorldPosition(splittingCP, vp);
1758 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, lp);
1759                 } else if (prevCP == null) {
1760                         newCP.insert(splittingCP, Direction.PREVIOUS);
1761                         newVariableLengthCP = insertStraight(newCP, Direction.PREVIOUS, new Vector3d(vp), lp);
1762                         splittingCP.setWorldPosition(new Vector3d(vn));
1763 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, ln);
1764                 } else {
1765                         newCP.insert(splittingCP, nextCP);
1766                         newVariableLengthCP = insertStraight(newCP, nextCP, new Vector3d(vn), ln);
1767                         splittingCP.setWorldPosition(new Vector3d(vp));
1768 //                      splittingCP.setRelatedScalarDouble(ProcessResource.plant3Dresource.HasLength, lp);
1769                 }
1770                 positionUpdate(newCP);
1771
1772         }
1773
1774         public static void addSizeChange(boolean reversed, PipeRun pipeRun, PipeRun other, InlineComponent reducer, PipeControlPoint previous, PipeControlPoint next) {
1775                 PipeControlPoint pcp = reducer.getControlPoint();
1776                 PipeControlPoint ocp = pcp.getSubPoint().get(0);
1777                 if (!reversed) {
1778                         String name = pipeRun.getUniqueName("Reducer");
1779                         reducer.setName(name);
1780                         pipeRun.addChild(reducer);
1781                         other.addChild(ocp);
1782                         reducer.setAlternativePipeRun(other);
1783
1784                         previous.setNext(pcp);
1785                         pcp.setPrevious(previous);
1786                         ocp.setPrevious(previous);
1787                         if (next != null) {
1788                                 pcp.setNext(next);
1789                                 ocp.setNext(next);
1790                                 next.setPrevious(ocp);
1791                         }
1792                 } else {
1793                         String name = other.getUniqueName("Reducer");
1794                         reducer.setName(name);
1795                         other.addChild(reducer);
1796                         pipeRun.addChild(ocp);
1797                         reducer.setAlternativePipeRun(pipeRun);
1798
1799                         if (next != null) {
1800                                 next.setNext(pcp);
1801                                 pcp.setPrevious(next);
1802                                 ocp.setPrevious(next);
1803                         }
1804                         pcp.setNext(previous);
1805                         ocp.setNext(previous);
1806                         previous.setPrevious(ocp);
1807                 }
1808         }
1809 }