org.simantics.plant3d/src/org/simantics/plant3d/utils/ComponentUtils.java

   1 package org.simantics.plant3d.utils;
   2
   3 import java.util.ArrayList;
   4 import java.util.HashMap;
   5 import java.util.List;
   6 import java.util.Map;
   7
   8 import javax.vecmath.Vector3d;
   9
  10 import org.simantics.Simantics;
  11 import org.simantics.db.ReadGraph;
  12 import org.simantics.db.Resource;
  13 import org.simantics.db.common.request.ReadRequest;
  14 import org.simantics.db.common.utils.NameUtils;
  15 import org.simantics.db.exception.DatabaseException;
  16 import org.simantics.g3d.math.MathTools;
  17 import org.simantics.g3d.scenegraph.GeometryProvider;
  18 import org.simantics.g3d.scenegraph.ParametricGeometryProvider;
  19 import org.simantics.layer0.Layer0;
  20 import org.simantics.plant3d.geometry.ParameterRead;
  21 import org.simantics.plant3d.ontology.Plant3D;
  22 import org.simantics.plant3d.scenegraph.EndComponent;
  23 import org.simantics.plant3d.scenegraph.Equipment;
  24 import org.simantics.plant3d.scenegraph.InlineComponent;
  25 import org.simantics.plant3d.scenegraph.Nozzle;
  26 import org.simantics.plant3d.scenegraph.P3DRootNode;
  27 import org.simantics.plant3d.scenegraph.PipeRun;
  28 import org.simantics.plant3d.scenegraph.PipelineComponent;
  29 import org.simantics.plant3d.scenegraph.TurnComponent;
  30 import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint;
  31 import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint.Direction;
  32 import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint.PositionType;
  33 import org.simantics.plant3d.scenegraph.controlpoint.PipingRules;
  34
  35 public class ComponentUtils {
  36
  37
  38         private static Map<String,Class<? extends PipelineComponent>> clazzes = new HashMap<String, Class<? extends PipelineComponent>>();
  39         private static Map<String,GeometryProvider> providers = new HashMap<String,GeometryProvider>();
  40         private static Map<String,String> names = new HashMap<String,String>();
  41
  42         public static void preloadCache() {
  43                 Simantics.getSession().asyncRequest(new ReadRequest() {
  44
  45                         @Override
  46                         public void run(ReadGraph graph) throws DatabaseException {
  47                                 List<String> types = new ArrayList<String>();
  48                                 types.add(Plant3D.URIs.Builtin_Straight);
  49                                 types.add(Plant3D.URIs.Builtin_Elbow);
  50                                 types.add(Plant3D.URIs.Builtin_ConcentricReducer);
  51                                 types.add(Plant3D.URIs.Builtin_BranchSplitComponent);
  52                                 types.add(Plant3D.URIs.Builtin_EccentricReducer);
  53                                 types.add(Plant3D.URIs.Builtin_Elbow45);
  54                                 types.add(Plant3D.URIs.Builtin_Elbow90);
  55
  56                                 for (String typeURI : types) {
  57                                         load(graph, typeURI);
  58                                 }
  59                         }
  60                 });
  61         }
  62
  63         private static GeometryProvider getProvider(ReadGraph graph, Resource type) throws DatabaseException {
  64
  65                 Layer0 l0 = Layer0.getInstance(graph);
  66                 Plant3D p3d = Plant3D.getInstance(graph);
  67                 Resource geom = graph.getPossibleObject(type,p3d.hasGeometry);
  68                 if (geom == null) {
  69                         for (Resource a : graph.getObjects(type, l0.Asserts)) {
  70                                 if (p3d.hasGeometry.equals(graph.getPossibleObject(a, l0.HasPredicate))) {
  71                                         geom = graph.getPossibleObject(a, l0.HasObject);
  72                                         break;
  73                                 }
  74                         }
  75                 }
  76                 if (geom != null) {
  77                         GeometryProvider provider = graph.adapt(geom, GeometryProvider.class);
  78                         if (provider instanceof ParametricGeometryProvider) {
  79                         Map<String,Object> params = graph.syncRequest(new ParameterRead(type));
  80                         if (params.size() > 0)
  81                             ((ParametricGeometryProvider)provider).setProperties(params);
  82                         }
  83                         return provider;
  84                 }
  85                 return null;
  86         }
  87
  88         private static Class<? extends PipelineComponent> getClazz(ReadGraph graph, Resource type) throws DatabaseException {
  89                 Plant3D p3d = Plant3D.getInstance(graph);
  90                 if (graph.isInheritedFrom(type, p3d.InlineComponent))
  91                         return InlineComponent.class;
  92                 if (graph.isInheritedFrom(type, p3d.TurnComponent))
  93                         return TurnComponent.class;
  94                 if (graph.isInheritedFrom(type, p3d.EndComponent))
  95                         return EndComponent.class;
  96                 if (graph.isInheritedFrom(type, p3d.Nozzle))
  97                         return Nozzle.class;
  98                 return null;
  99         }
 100
 101         private static void load(ReadGraph graph, String typeURI) throws DatabaseException {
 102                 Plant3D p3d = Plant3D.getInstance(graph);
 103                 Resource type = graph.getResource(typeURI);
 104
 105                 GeometryProvider provider = getProvider(graph, type);
 106                 if (provider != null || graph.hasStatement(type,p3d.NonVisibleComponent)) {
 107                         providers.put(typeURI, provider);
 108                         if (graph.isInheritedFrom(type, p3d.PipelineComponent))
 109                                 clazzes.put(typeURI,getClazz(graph, type));
 110                         names.put(typeURI, NameUtils.getSafeName(graph, type));
 111                         return;
 112                 }
 113                 throw new DatabaseException("Cannot find component for " + typeURI);
 114         }
 115
 116         private static void load(final String typeURI) throws DatabaseException {
 117                 Simantics.getSession().syncRequest(new ReadRequest() {
 118
 119                         @Override
 120                         public void run(ReadGraph graph) throws DatabaseException {
 121                                 load(graph,typeURI);
 122                         }
 123                 });
 124         }
 125
 126         /**
 127          * Creates a component
 128          *
 129          * Does not set the name or add the component to a piperun.
 130          * @param root
 131          * @param typeURI
 132          * @return
 133          * @throws Exception
 134          */
 135         public static PipelineComponent createComponent(P3DRootNode root, String typeURI) throws Exception {
 136                 Class<? extends PipelineComponent> type = clazzes.get(typeURI);
 137                 GeometryProvider provider = providers.get(typeURI);
 138                 if (type == null || provider == null) {
 139                         load(typeURI);
 140                         type = clazzes.get(typeURI);
 141                         provider = providers.get(typeURI);
 142                 }
 143                 //PipelineComponent component = type.newInstance();
 144                 PipelineComponent component = null;
 145                 if (type == InlineComponent.class) {
 146                         component = root.createInline();
 147                 } else if (type == TurnComponent.class) {
 148                         component = root.createTurn();
 149                 } else if (type == EndComponent.class) {
 150                         component = root.createTurn();
 151                 } else if (type == Nozzle.class) {
 152                         component = root.createNozzle();
 153                 }
 154                 component.setType(typeURI);
 155                 component.setGeometry(provider);
 156                 return component;
 157         }
 158
 159         /**
 160          * Creates a equipment
 161          *
 162          * Does not set the name
 163          *
 164          * @param root
 165          * @param typeURI
 166          * @return
 167          * @throws Exception
 168          */
 169
 170         public static Equipment createEquipment(P3DRootNode root, String typeURI) throws Exception {
 171                 GeometryProvider provider = providers.get(typeURI);
 172                 if (provider == null) {
 173                         load(typeURI);
 174                         provider = providers.get(typeURI);
 175                 }
 176                 Equipment equipment = root.createEquipment();
 177                 equipment.setType(typeURI);
 178                 equipment.setGeometry(provider);
 179                 root.addChild(equipment);
 180                 return equipment;
 181         }
 182
 183         public static InlineComponent createStraight(P3DRootNode root) throws Exception{
 184                 InlineComponent component = root.createInline();
 185                 component.setType(Plant3D.URIs.Builtin_Straight);
 186                 component.setGeometry(providers.get(Plant3D.URIs.Builtin_Straight));
 187                 return component;
 188         }
 189
 190         public static TurnComponent createTurn(P3DRootNode root) throws Exception {
 191                 TurnComponent elbow = root.createTurn();
 192                 elbow.setType(Plant3D.URIs.Builtin_Elbow);
 193                 elbow.setGeometry(providers.get(Plant3D.URIs.Builtin_Elbow));
 194                 return elbow;
 195         }
 196
 197         public static InlineComponent createReducer(P3DRootNode root) throws Exception {
 198                 InlineComponent component = root.createInline();
 199                 component.setType(Plant3D.URIs.Builtin_ConcentricReducer);
 200                 component.setGeometry(providers.get(Plant3D.URIs.Builtin_ConcentricReducer));
 201                 return component;
 202         }
 203
 204         public static InlineComponent createBranchSplit(P3DRootNode root) throws Exception {
 205                 InlineComponent component = root.createInline();
 206                 component.setType(Plant3D.URIs.Builtin_BranchSplitComponent);
 207                 return component;
 208         }
 209
 210         public static Equipment createEquipment(P3DRootNode root, Item equipmentType) throws Exception {
 211                 Equipment equipment = createEquipment(root, equipmentType.getUri());
 212                 String n = root.getUniqueName(equipmentType.getName());
 213                 equipment.setName(n);
 214                 return equipment;
 215         }
 216
 217
 218
 219         public static Nozzle createDefaultNozzle(P3DRootNode root, Equipment equipment) throws Exception {
 220                 return createNozzle(root, equipment, new Item(Plant3D.URIs.Builtin_Nozzle, "Nozzle"));
 221         }
 222
 223         public static Nozzle createNozzle(P3DRootNode root, Equipment equipment, Item nozzleType) throws Exception {
 224                 Nozzle nozzle = root.createNozzle();
 225                 nozzle.setType(nozzleType.getUri());
 226                 String n = root.getUniqueName(nozzleType.getName());
 227                 nozzle.setName(n);
 228                 PipeRun pipeRun = new PipeRun();
 229                 n = root.getUniqueName("PipeRun");
 230                 pipeRun.setName(n);
 231                 nozzle.setPipeRun(pipeRun);
 232
 233                 equipment.addChild(nozzle);
 234                 root.addChild(pipeRun);
 235                 // root.getNodeMap().commit("Add nozzle " + n);
 236                 return nozzle;
 237         }
 238
 239         public static class InsertInstruction {
 240                 public String typeUri;
 241
 242                 public PositionType position = PositionType.NEXT;
 243                 public PositionType insertPosition = PositionType.NEXT;
 244
 245                 // Reducer requires pipe specs
 246                 public Double diameter;
 247                 public Double turnRadius;
 248
 249                 // Variable length
 250                 public Double length;
 251
 252                 // Variable angle
 253                 public Double angle;
 254
 255                 public String getTypeUri() {
 256                         return typeUri;
 257                 }
 258
 259                 public void setTypeUri(String typeUri) {
 260                         this.typeUri = typeUri;
 261                 }
 262
 263                 public PositionType getPosition() {
 264                         return position;
 265                 }
 266
 267                 public void setPosition(PositionType position) {
 268                         this.position = position;
 269                 }
 270
 271                 public PositionType getInsertPosition() {
 272                         return insertPosition;
 273                 }
 274
 275                 public void setInsertPosition(PositionType insertPosition) {
 276                         this.insertPosition = insertPosition;
 277                 }
 278
 279                 public Double getDiameter() {
 280                         return diameter;
 281                 }
 282
 283                 public void setDiameter(Double diameter) {
 284                         this.diameter = diameter;
 285                 }
 286
 287                 public Double getTurnRadius() {
 288                         return turnRadius;
 289                 }
 290
 291                 public void setTurnRadius(Double turnRadius) {
 292                         this.turnRadius = turnRadius;
 293                 }
 294
 295                 public Double getLength() {
 296                         return length;
 297                 }
 298
 299                 public void setLength(Double length) {
 300                         this.length = length;
 301                 }
 302
 303                 public Double getAngle() {
 304                         return angle;
 305                 }
 306
 307                 public void setAngle(Double angle) {
 308                         this.angle = angle;
 309                 }
 310
 311         }
 312
 313         public static PipelineComponent addComponent(P3DRootNode root, PipelineComponent component,  InsertInstruction inst) throws Exception {
 314
 315                 PipelineComponent newComponent = ComponentUtils.createComponent(root, inst.typeUri);
 316                 PipeControlPoint newPcp = newComponent.getControlPoint();
 317
 318                 PipeControlPoint toPcp = component.getControlPoint();
 319                 PipeRun pipeRun = toPcp.getPipeRun();
 320
 321                 String typeName = names.get(inst.typeUri);
 322                 if (typeName == null)
 323                         typeName = "Component";
 324
 325                 Vector3d dir = null;
 326                 Vector3d pos = null;
 327
 328                 PositionType position = inst.position;
 329                 PositionType insertPosition = inst.insertPosition;
 330                 boolean lengthAdjustable = false;
 331                 if (newComponent instanceof InlineComponent) {
 332                         lengthAdjustable = ((InlineComponent)newComponent).isVariableLength() || ((InlineComponent)newComponent).isModifialble();
 333                 }
 334                 boolean insertAdjustable = false;
 335                 if (component instanceof InlineComponent) {
 336                         insertAdjustable = ((InlineComponent)component).isVariableLength();
 337                 }
 338                 boolean sizeChange = false;
 339                 if (newComponent instanceof InlineComponent) {
 340                         sizeChange = ((InlineComponent)newComponent).isSizeChange();
 341                 }
 342
 343                 if (toPcp.isInline()) {
 344                         switch (position) {
 345                         case NEXT:
 346                                 if (toPcp.isDualInline()) {
 347                                         toPcp = toPcp.getDualSub();
 348                                         pipeRun = toPcp.getPipeRun();
 349                                 }
 350
 351                                 break;
 352                         case PREVIOUS:
 353                                 if (toPcp.isDualSub()) {
 354                                         toPcp = toPcp.parent;
 355                                         pipeRun = toPcp.getPipeRun();
 356                                 }
 357                                 break;
 358                         default:
 359                                 break;
 360                         }
 361                         Vector3d start = new Vector3d();
 362                         Vector3d end = new Vector3d();
 363                         dir = new Vector3d();
 364                         toPcp.getInlineControlPointEnds(start, end, dir);
 365                         dir.normalize();
 366                         switch (position) {
 367                         case NEXT:
 368                                 pos = new Vector3d(end);
 369                                 break;
 370                         case PREVIOUS:
 371                                 pos = new Vector3d(start);
 372                                 break;
 373                         case SPLIT:
 374                                 pos = new Vector3d(toPcp.getWorldPosition());
 375                                 break;
 376                         default:
 377                                 break;
 378                         }
 379
 380                 } else if (toPcp.isDirected()) {
 381                         dir = new Vector3d(toPcp.getDirection(Direction.NEXT));
 382                         pos = new Vector3d(toPcp.getWorldPosition());
 383                 } else if (toPcp.isTurn() && toPcp.asFixedAngle()) {
 384                         dir = new Vector3d(toPcp.getDirection(position == PositionType.NEXT ? Direction.NEXT : Direction.PREVIOUS));
 385                         pos = new Vector3d(toPcp.getWorldPosition());
 386                         if (!lengthAdjustable) {
 387                                 Vector3d v = new Vector3d(dir);
 388                                 v.scale(toPcp.getInlineLength());
 389                                 pos.add(v);
 390                         } else {
 391                                 if (insertPosition == PositionType.NEXT) {
 392                                         Vector3d v = new Vector3d(dir);
 393                                         v.scale(toPcp.getInlineLength());
 394                                         pos.add(v);
 395                                 } else if (insertPosition == PositionType.SPLIT) {
 396                                         // scale 0.5*length so that we don't remove the length twice from the new component
 397                                         Vector3d v = new Vector3d(dir);
 398                                         v.scale(toPcp.getInlineLength()*0.5);
 399                                         pos.add(v);
 400                                 }
 401                         }
 402                 }
 403
 404
 405                 if (!sizeChange) {
 406                         String name = component.getPipeRun().getUniqueName(typeName);
 407                         newComponent.setName(name);
 408
 409                         pipeRun.addChild(newComponent);
 410
 411                         if (newComponent instanceof InlineComponent && ((InlineComponent)newComponent).isVariableLength() ||((InlineComponent)newComponent).isModifialble()) {
 412                                 newPcp.setLength(inst.length);
 413                                 newComponent.setParameter("length", inst.length);
 414                         } else if (newComponent instanceof TurnComponent && ((TurnComponent)newComponent).isVariableAngle()) {
 415                                 newPcp.setTurnAngle(inst.angle);
 416                                 newComponent.setParameter("turnAngle", inst.angle);
 417                         }
 418
 419                         newComponent.updateParameters();
 420
 421                         Vector3d v = new Vector3d(dir);
 422                         if (insertAdjustable) {
 423                                 if (insertPosition == PositionType.NEXT)
 424                                         v.scale(newComponent.getControlPoint().getInlineLength());
 425                                 else if (insertPosition == PositionType.SPLIT)
 426                                         v.set(0, 0, 0);
 427                                 else if (insertPosition == PositionType.PREVIOUS)
 428                                         v.scale(-newComponent.getControlPoint().getInlineLength());
 429                         } else {
 430                                 v.scale(newComponent.getControlPoint().getInlineLength());
 431                         }
 432                         switch (position) {
 433                         case NEXT:
 434                                 pos.add(v);
 435                                 break;
 436                         case PREVIOUS:
 437                                 pos.sub(v);
 438                                 break;
 439                         case SPLIT:
 440                                 break;
 441                         default:
 442                                 break;
 443                         }
 444
 445                         switch (position) {
 446                         case NEXT:
 447                                 if (toPcp.isDualInline())
 448                                         toPcp = toPcp.getDualSub();
 449                                 newPcp.insert(toPcp, Direction.NEXT);
 450                                 newPcp.setWorldPosition(pos);
 451                                 break;
 452                         case PREVIOUS:
 453                                 if (toPcp.isDualSub())
 454                                         toPcp = toPcp.parent;
 455                                 newPcp.insert(toPcp, Direction.PREVIOUS);
 456                                 newPcp.setWorldPosition(pos);
 457                                 break;
 458                         case SPLIT:
 459                                 PipingRules.splitVariableLengthComponent(newComponent, (InlineComponent)component, true);
 460                         default:
 461                                 break;
 462                         }
 463                 } else {
 464                         PipeRun other = new PipeRun();
 465                         String n = root.getUniqueName("PipeRun");
 466                         other.setName(n);
 467                         other.setPipeDiameter(inst.diameter);
 468                         other.setTurnRadius(inst.turnRadius);
 469                         root.addChild(other);
 470
 471
 472                         if (position == PositionType.NEXT) {
 473                                 PipingRules.addSizeChange(false, pipeRun, other, (InlineComponent)newComponent, toPcp, null);
 474                         } else if (position == PositionType.PREVIOUS){
 475                                 PipingRules.addSizeChange(true, pipeRun, other, (InlineComponent)newComponent, toPcp, null);
 476                         }
 477                         newPcp.setWorldPosition(pos);
 478                         // TODO : chicken-egg problem
 479                         newComponent.updateParameters();
 480                         Vector3d v = new Vector3d(dir);
 481                         v.scale(newComponent.getControlPoint().getLength()*0.5);
 482                         switch (position) {
 483                         case NEXT:
 484                                 pos.add(v);
 485                                 break;
 486                         case PREVIOUS:
 487                                 pos.sub(v);
 488                                 break;
 489                         case SPLIT:
 490                                 break;
 491                         default:
 492                                 break;
 493                         }
 494                         newPcp.setWorldPosition(pos);
 495
 496                 }
 497
 498
 499                 return newComponent;
 500         }
 501         public static boolean connect(PipelineComponent current, PipelineComponent endTo) throws Exception {
 502                 return connect(current, endTo, null, null);
 503         }
 504
 505         /**
 506          * Connects component to another component
 507          * @param current
 508          * @param endTo
 509          * @param endType
 510          * @param position
 511          * @return
 512          * @throws Exception
 513          */
 514         public static boolean connect(PipelineComponent current, PipelineComponent endTo, PositionType endType, Vector3d position) throws Exception{
 515                 PipeControlPoint endCP = endTo.getControlPoint();
 516                 boolean reversed;
 517                 if (current.getNext() == null)
 518                         reversed = false;
 519                 else if (current.getPrevious() == null)
 520                         reversed = true;
 521                 else
 522                         return false;
 523
 524                 PipeRun pipeRun = current.getPipeRun();
 525                 P3DRootNode root = (P3DRootNode)current.getRootNode();
 526                 PipeControlPoint currentCP = current.getControlPoint();
 527
 528                 if (endType == null || endType == PositionType.NEXT || endType == PositionType.PREVIOUS) {
 529
 530
 531
 532                         boolean requiresReverse = false;
 533                         if (!reversed && endCP.getPrevious() != null) {
 534                                 if (endCP.getNext() != null)
 535                                         return false;
 536                                 requiresReverse = true;
 537                         } else if (reversed && endCP.getNext() != null) {
 538                                 if (endCP.getPrevious() != null)
 539                                         return false;
 540                                 requiresReverse = true;
 541                         }
 542                         PipeRun other = endCP.getPipeRun();
 543                         boolean mergeRuns = other == null ? true : pipeRun.canMerge(other);
 544
 545                         if (requiresReverse) {
 546                                 // Pipe line must be traversible with next/previous relations without direction change.
 547                                 // Now the component, where we are connecting the created pipeline is defined in different order.
 548                                 PipingRules.reverse(other);
 549
 550                         }
 551
 552                         if (mergeRuns) {
 553                                 // Runs have compatible specs and must be merged
 554                                 if (other != null && pipeRun != other)
 555                                         pipeRun.merge(other);
 556                                 else if (other == null) {
 557                                         if (!(endTo instanceof Nozzle)) {
 558                                                 pipeRun.addChild(endTo);
 559                                         } else {
 560                                                 endTo.setPipeRun(pipeRun);
 561                                         }
 562                                 }
 563                                 if (!reversed) {
 564                                         currentCP.setNext(endCP);
 565                                         endCP.setPrevious(currentCP);
 566                                 } else {
 567                                         currentCP.setPrevious(endCP);
 568                                         endCP.setNext(currentCP);
 569                                 }
 570                         } else {
 571                                 // Runs do not have compatible specs, and a reducer must be attached in between.
 572                                 InlineComponent reducer = ComponentUtils.createReducer(root);
 573                                 PipeControlPoint pcp = reducer.getControlPoint();
 574
 575                                 Vector3d endPos = endCP.getWorldPosition();
 576                                 Vector3d currentPos = currentCP.getWorldPosition();
 577                                 Vector3d v = new Vector3d(endPos);
 578                                 v.sub(currentPos);
 579                                 v.scale(0.5);
 580                                 v.add(currentPos);
 581
 582                                 PipingRules.addSizeChange(reversed, pipeRun, other, reducer, currentCP, endCP);
 583
 584                                 pcp.setWorldPosition(v);
 585                                 reducer.updateParameters();
 586                         }
 587                         PipingRules.positionUpdate(endCP);
 588                         return true;
 589
 590                 } else if (endType == PositionType.SPLIT) {
 591                         InlineComponent branchSplit = createBranchSplit((InlineComponent)endTo, position);
 592                         if (branchSplit == null)
 593                                 return false;
 594                         PipeControlPoint branchSplitCP = branchSplit.getControlPoint();
 595                         PipeControlPoint pcp = new PipeControlPoint(branchSplit,pipeRun);
 596                         branchSplitCP.children.add(pcp);
 597                         pcp.parent = branchSplitCP;
 598                         pcp.setWorldOrientation(branchSplitCP.getWorldOrientation());
 599                         pcp.setWorldPosition(branchSplitCP.getWorldPosition());
 600
 601
 602                         if(!reversed) {
 603                                 pcp.setPrevious(currentCP);
 604                                 currentCP.setNext(pcp);
 605                         } else {
 606                                 pcp.setNext(currentCP);
 607                                 currentCP.setPrevious(pcp);
 608                         }
 609                         PipingRules.positionUpdate(endCP);
 610                         return true;
 611                 }
 612                 return false;
 613         }
 614
 615         public static InlineComponent createBranchSplit(InlineComponent component, Vector3d pos) throws Exception{
 616                 if (!component.isVariableLength())
 617                         return null;
 618                 PipeRun pipeRun = component.getPipeRun();
 619                 Vector3d sStart = new Vector3d();
 620                 Vector3d sEnd = new Vector3d();
 621                 component.getControlPoint().getInlineControlPointEnds(sStart, sEnd);
 622
 623                 if (MathTools.distance(sStart, sEnd) < (pipeRun.getPipeDiameter()*0.5))
 624                         return null;
 625
 626
 627                 Vector3d p = MathTools.closestPointOnEdge(new Vector3d(pos), sStart, sEnd);
 628                 if (p == sStart) {
 629                         Vector3d v = new Vector3d(sEnd);
 630                         v.sub(sStart);
 631                         v.normalize();
 632                         v.scale(component.getPipeRun().getPipeDiameter()*0.5);
 633                         p.add(v);
 634                 } else if (p == sEnd) {
 635                         Vector3d v = new Vector3d(sStart);
 636                         v.sub(sEnd);
 637                         v.normalize();
 638                         v.scale(component.getPipeRun().getPipeDiameter()*0.5);
 639                         p.add(v);
 640                 }
 641
 642                 P3DRootNode root = (P3DRootNode)component.getRootNode();
 643                 InlineComponent branchSplit = ComponentUtils.createBranchSplit(root);
 644                 String branchName = component.getPipeRun().getUniqueName("Branch");
 645                 branchSplit.setName(branchName);
 646                 component.getPipeRun().addChild(branchSplit);
 647                 PipeControlPoint branchSplitCP = branchSplit.getControlPoint();
 648                 branchSplitCP.setWorldPosition(p);
 649                 PipingRules.splitVariableLengthComponent(branchSplit, component, false);
 650                 return branchSplit;
 651         }
 652 }