1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
3 // File: SketchSolver_Group.cpp
4 // Created: 27 May 2014
5 // Author: Artem ZHIDKOV
7 #include "SketchSolver_Group.h"
9 #include <SketchSolver_Constraint.h>
10 #include <SketchSolver_ConstraintCoincidence.h>
11 #include <SketchSolver_ConstraintMulti.h>
12 #include <SketchSolver_Error.h>
13 #include <SketchSolver_Manager.h>
15 #include <Events_Error.h>
16 #include <Events_Loop.h>
17 #include <ModelAPI_AttributeString.h>
18 #include <ModelAPI_Events.h>
19 #include <ModelAPI_Session.h>
20 #include <ModelAPI_Validator.h>
22 #include <SketchPlugin_ConstraintAngle.h>
23 #include <SketchPlugin_ConstraintCoincidence.h>
24 #include <SketchPlugin_ConstraintDistance.h>
25 #include <SketchPlugin_ConstraintEqual.h>
26 #include <SketchPlugin_ConstraintHorizontal.h>
27 #include <SketchPlugin_ConstraintLength.h>
28 #include <SketchPlugin_ConstraintFillet.h>
29 #include <SketchPlugin_ConstraintMirror.h>
30 #include <SketchPlugin_ConstraintParallel.h>
31 #include <SketchPlugin_ConstraintPerpendicular.h>
32 #include <SketchPlugin_ConstraintRadius.h>
33 #include <SketchPlugin_ConstraintRigid.h>
34 #include <SketchPlugin_ConstraintTangent.h>
35 #include <SketchPlugin_ConstraintVertical.h>
36 #include <SketchPlugin_MultiRotation.h>
37 #include <SketchPlugin_MultiTranslation.h>
43 /// \brief This class is used to give unique index to the groups
47 /// \brief Return vacant index
48 static GroupID NEW_GROUP() { return ++myGroupIndex; }
49 /// \brief Removes the index
50 static void REMOVE_GROUP(const GroupID& theIndex) {
51 if (myGroupIndex == theIndex)
58 static GroupID myGroupIndex; ///< index of the group
61 GroupID GroupIndexer::myGroupIndex = GID_OUTOFGROUP;
64 static void sendMessage(const char* theMessageName)
66 std::shared_ptr<Events_Message> aMessage = std::shared_ptr<Events_Message>(
67 new Events_Message(Events_Loop::eventByName(theMessageName)));
68 Events_Loop::loop()->send(aMessage);
73 // ========================================================
74 // ========= SketchSolver_Group ===============
75 // ========================================================
77 SketchSolver_Group::SketchSolver_Group(
78 std::shared_ptr<ModelAPI_CompositeFeature> theWorkplane)
79 : myID(GroupIndexer::NEW_GROUP()),
82 // Initialize workplane
83 myWorkplaneID = EID_UNKNOWN;
84 addWorkplane(theWorkplane);
87 SketchSolver_Group::~SketchSolver_Group()
89 myConstraints.clear();
90 GroupIndexer::REMOVE_GROUP(myID);
93 // ============================================================================
94 // Function: isBaseWorkplane
95 // Class: SketchSolver_Group
96 // Purpose: verify the group is based on the given workplane
97 // ============================================================================
98 bool SketchSolver_Group::isBaseWorkplane(CompositeFeaturePtr theWorkplane) const
100 return theWorkplane == mySketch;
103 // ============================================================================
104 // Function: isInteract
105 // Class: SketchSolver_Group
106 // Purpose: verify are there any entities in the group used by given constraint
107 // ============================================================================
108 bool SketchSolver_Group::isInteract(FeaturePtr theFeature) const
110 // Empty group interacts with everything
113 // Check interaction with the storage
114 return myStorage->isInteract(theFeature);
117 // ============================================================================
118 // Function: changeConstraint
119 // Class: SketchSolver_Group
120 // Purpose: create/update the constraint in the group
121 // ============================================================================
122 bool SketchSolver_Group::changeConstraint(
123 std::shared_ptr<SketchPlugin_Constraint> theConstraint)
125 // There is no workplane yet, something wrong
126 if (myWorkplaneID == EID_UNKNOWN)
129 if (!theConstraint || !theConstraint->data())
132 if (!checkFeatureValidity(theConstraint))
135 BuilderPtr aBuilder = SketchSolver_Manager::instance()->builder();
136 myStorage->blockEvents(true);
138 bool isNewConstraint = myConstraints.find(theConstraint) == myConstraints.end();
139 if (isNewConstraint) {
140 // Add constraint to the current group
141 SolverConstraintPtr aConstraint = aBuilder->createConstraint(theConstraint);
144 aConstraint->process(myStorage, getId(), getWorkplaneId());
145 if (!aConstraint->error().empty()) {
146 if (aConstraint->error() == SketchSolver_Error::NOT_INITIALIZED())
147 return false; // some attribute are not initialized yet, don't show message
148 Events_Error::send(aConstraint->error(), this);
150 myConstraints[theConstraint] = aConstraint;
153 myConstraints[theConstraint]->update();
156 if (theConstraint->getKind() == SketchPlugin_ConstraintMirror::ID()) {
157 AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
158 theConstraint->attribute(SketchPlugin_ConstraintMirror::ENTITY_A()));
159 if (aRefAttr && aRefAttr->isObject()) {
160 std::shared_ptr<SketchPlugin_Feature> aFeature =
161 std::dynamic_pointer_cast<SketchPlugin_Feature>(
162 ModelAPI_Feature::feature(aRefAttr->object()));
164 SolverConstraintPtr aConstraint = aBuilder->createFixedConstraint(aFeature);
166 aConstraint->process(myStorage, getId(), getWorkplaneId());
167 setTemporary(aConstraint);
176 void SketchSolver_Group::updateConstraints()
178 std::set<SolverConstraintPtr> aPostponed; // postponed constraints Multi-Rotation and Multi-Translation
180 ConstraintConstraintMap::iterator anIt = myConstraints.begin();
181 for (; anIt != myConstraints.end(); ++anIt) {
182 if (myChangedConstraints.find(anIt->first) == myChangedConstraints.end())
184 if (anIt->first->getKind() == SketchPlugin_MultiRotation::ID() ||
185 anIt->first->getKind() == SketchPlugin_MultiTranslation::ID())
186 aPostponed.insert(anIt->second);
188 anIt->second->update();
191 // Update postponed constraints
192 std::set<SolverConstraintPtr>::iterator aSCIter = aPostponed.begin();
193 for (; aSCIter != aPostponed.end(); ++aSCIter)
194 (*aSCIter)->update();
196 myChangedConstraints.clear();
199 bool SketchSolver_Group::updateFeature(FeaturePtr theFeature)
201 if (!checkFeatureValidity(theFeature))
204 myStorage->blockEvents(true);
205 myStorage->refresh(true);
206 return myStorage->update(theFeature);
209 void SketchSolver_Group::moveFeature(FeaturePtr theFeature)
211 BuilderPtr aBuilder = SketchSolver_Manager::instance()->builder();
213 // Firstly, revert changes in the fixed entities
214 myStorage->blockEvents(true);
215 myStorage->refresh(true);
217 // Secondly, search attributes of the feature in the list of the Multi constraints and update them
218 ConstraintConstraintMap::iterator aCIt = myConstraints.begin();
219 for (; aCIt != myConstraints.end(); ++aCIt) {
220 if ((aCIt->second->getType() == CONSTRAINT_MULTI_ROTATION ||
221 aCIt->second->getType() == CONSTRAINT_MULTI_TRANSLATION)
222 && aCIt->second->isUsed(theFeature))
223 std::dynamic_pointer_cast<SketchSolver_ConstraintMulti>(aCIt->second)->update(true);
226 // Then, create temporary rigid constraint
227 SolverConstraintPtr aConstraint = aBuilder->createMovementConstraint(theFeature);
230 aConstraint->process(myStorage, getId(), getWorkplaneId());
231 if (aConstraint->error().empty())
232 setTemporary(aConstraint);
235 // ============================================================================
236 // Function: addWorkplane
237 // Class: SketchSolver_Group
238 // Purpose: create workplane for the group
239 // ============================================================================
240 bool SketchSolver_Group::addWorkplane(CompositeFeaturePtr theSketch)
242 if (myWorkplaneID != EID_UNKNOWN || theSketch->getKind() != SketchPlugin_Sketch::ID())
243 return false; // the workplane already exists or the function parameter is not Sketch
245 mySketch = theSketch;
246 if (!updateWorkplane()) {
247 mySketch = CompositeFeaturePtr();
253 // ============================================================================
254 // Function: updateWorkplane
255 // Class: SketchSolver_Group
256 // Purpose: update parameters of workplane
257 // ============================================================================
258 bool SketchSolver_Group::updateWorkplane()
260 BuilderPtr aBuilder = SketchSolver_Manager::instance()->builder();
261 if (!myStorage) // Create storage if not exists
262 myStorage = aBuilder->createStorage(getId());
264 // sketch should be unchanged, set it out of current group
265 bool isUpdated = myStorage->update(FeaturePtr(mySketch), GID_OUTOFGROUP);
267 EntityWrapperPtr anEntity = myStorage->entity(FeaturePtr(mySketch));
268 myWorkplaneID = anEntity->id();
273 // ============================================================================
274 // Function: resolveConstraints
275 // Class: SketchSolver_Group
276 // Purpose: solve the set of constraints for the current group
277 // ============================================================================
278 bool SketchSolver_Group::resolveConstraints()
280 if (!myChangedConstraints.empty())
283 bool aResolved = false;
284 bool isGroupEmpty = isEmpty();
285 if (myStorage->isNeedToResolve() && !isGroupEmpty) {
287 mySketchSolver = SketchSolver_Manager::instance()->builder()->createSolver();
289 mySketchSolver->setGroup(myID);
290 mySketchSolver->calculateFailedConstraints(false);
291 myStorage->initializeSolver(mySketchSolver);
293 SketchSolver_SolveStatus aResult = STATUS_OK;
295 if (myStorage->hasDuplicatedConstraint())
296 aResult = STATUS_INCONSISTENT;
298 // To avoid overconstraint situation, we will remove temporary constraints one-by-one
299 // and try to find the case without overconstraint
300 bool isLastChance = false;
302 aResult = mySketchSolver->solve();
303 if (aResult == STATUS_OK || aResult == STATUS_EMPTYSET || isLastChance)
305 // try to update parameters and resolve once again
306 ConstraintConstraintMap::iterator aConstrIt = myConstraints.begin();
307 for (; aConstrIt != myConstraints.end(); ++aConstrIt)
308 aConstrIt->second->update();
311 removeTemporaryConstraints();
312 mySketchSolver->calculateFailedConstraints(true); // something failed => need to find it
313 myStorage->initializeSolver(mySketchSolver);
317 // Events_Error::send(SketchSolver_Error::SOLVESPACE_CRASH(), this);
318 getWorkplane()->string(SketchPlugin_Sketch::SOLVER_ERROR())->setValue(SketchSolver_Error::SOLVESPACE_CRASH());
320 // the error message should be changed before sending the message
321 sendMessage(EVENT_SOLVER_FAILED);
322 myPrevSolved = false;
326 if (aResult == STATUS_OK || aResult == STATUS_EMPTYSET) { // solution succeeded, store results into correspondent attributes
327 myStorage->refresh();
329 getWorkplane()->string(SketchPlugin_Sketch::SOLVER_ERROR())->setValue("");
330 // the error message should be changed before sending the message
331 sendMessage(EVENT_SOLVER_REPAIRED);
334 } else if (!myConstraints.empty()) {
335 // Events_Error::send(SketchSolver_Error::CONSTRAINTS(), this);
336 getWorkplane()->string(SketchPlugin_Sketch::SOLVER_ERROR())->setValue(SketchSolver_Error::CONSTRAINTS());
338 // the error message should be changed before sending the message
339 sendMessage(EVENT_SOLVER_FAILED);
340 myPrevSolved = false;
345 } else if (!isGroupEmpty) {
346 // Check there are constraints Fixed. If they exist, update parameters by stored values
347 ConstraintConstraintMap::iterator aCIt = myConstraints.begin();
348 for (; aCIt != myConstraints.end(); ++aCIt)
349 if (aCIt->first->getKind() == SketchPlugin_ConstraintRigid::ID()) {
353 if (aCIt != myConstraints.end())
354 myStorage->refresh();
356 removeTemporaryConstraints();
357 myStorage->blockEvents(false);
358 myStorage->setNeedToResolve(false);
362 // ============================================================================
363 // Function: mergeGroups
364 // Class: SketchSolver_Group
365 // Purpose: append specified group to the current group
366 // ============================================================================
367 void SketchSolver_Group::mergeGroups(const SketchSolver_Group& theGroup)
369 // If specified group is empty, no need to merge
370 if (theGroup.isEmpty())
373 std::set<ObjectPtr> aConstraints;
374 ConstraintConstraintMap::const_iterator aConstrIter = theGroup.myConstraints.begin();
375 for (; aConstrIter != theGroup.myConstraints.end(); aConstrIter++)
376 aConstraints.insert(aConstrIter->first);
378 std::list<FeaturePtr> aSortedConstraints = selectApplicableFeatures(aConstraints);
379 std::list<FeaturePtr>::iterator aSCIter = aSortedConstraints.begin();
380 for (; aSCIter != aSortedConstraints.end(); ++aSCIter) {
381 ConstraintPtr aConstr = std::dynamic_pointer_cast<SketchPlugin_Constraint>(*aSCIter);
384 changeConstraint(aConstr);
388 // ============================================================================
389 // Function: splitGroup
390 // Class: SketchSolver_Group
391 // Purpose: divide the group into several subgroups
392 // ============================================================================
393 void SketchSolver_Group::splitGroup(std::list<SketchSolver_Group*>& theCuts)
395 // New storage will be used in trimmed way to store the list of constraint interacted together.
396 StoragePtr aNewStorage = SketchSolver_Manager::instance()->builder()->createStorage(getId());
397 std::list<ConstraintWrapperPtr> aDummyVec; // empty vector to avoid creation of solver's constraints
399 // Obtain constraints, which should be separated
400 std::list<ConstraintPtr> anUnusedConstraints;
401 ConstraintConstraintMap::iterator aCIter = myConstraints.begin();
402 for ( ; aCIter != myConstraints.end(); aCIter++) {
403 if (aNewStorage->isInteract(FeaturePtr(aCIter->first)))
404 aNewStorage->addConstraint(aCIter->first, aDummyVec);
406 anUnusedConstraints.push_back(aCIter->first);
409 // Check the unused constraints once again, because they may become interacted with new storage since adding constraints
410 std::list<ConstraintPtr>::iterator aUnuseIt = anUnusedConstraints.begin();
411 while (aUnuseIt != anUnusedConstraints.end()) {
412 if (aNewStorage->isInteract(FeaturePtr(*aUnuseIt))) {
413 aNewStorage->addConstraint(*aUnuseIt, aDummyVec);
414 anUnusedConstraints.erase(aUnuseIt);
415 aUnuseIt = anUnusedConstraints.begin();
421 std::list<SketchSolver_Group*>::iterator aCutsIter;
422 aUnuseIt = anUnusedConstraints.begin();
423 for ( ; aUnuseIt != anUnusedConstraints.end(); ++aUnuseIt) {
424 // Remove unused constraints
425 removeConstraint(*aUnuseIt);
426 // Try to append constraint to already existent group
427 for (aCutsIter = theCuts.begin(); aCutsIter != theCuts.end(); ++aCutsIter)
428 if ((*aCutsIter)->isInteract(*aUnuseIt)) {
429 (*aCutsIter)->changeConstraint(*aUnuseIt);
432 if (aCutsIter == theCuts.end()) {
434 SketchSolver_Group* aGroup = new SketchSolver_Group(mySketch);
435 aGroup->changeConstraint(*aUnuseIt);
436 theCuts.push_back(aGroup);
438 // Find other groups interacting with constraint
439 std::list<SketchSolver_Group*>::iterator aBaseGroupIt = aCutsIter;
440 for (++aCutsIter; aCutsIter != theCuts.end(); ++aCutsIter)
441 if ((*aCutsIter)->isInteract(*aUnuseIt)) {
442 (*aBaseGroupIt)->mergeGroups(**aCutsIter);
443 std::list<SketchSolver_Group*>::iterator aRemoveIt = aCutsIter--;
444 theCuts.erase(aRemoveIt);
450 // ============================================================================
451 // Function: isConsistent
452 // Class: SketchSolver_Group
453 // Purpose: search removed entities and constraints
454 // ============================================================================
455 bool SketchSolver_Group::isConsistent()
457 if (isEmpty()) // no one constraint is initialized yet
460 // Check the features and constraint is the storage are valid
461 bool aResult = myStorage->isConsistent();
463 // additional check of consistency of the Fixed constraint,
464 // because they are not added to the storage
465 ConstraintConstraintMap::iterator aCIter = myConstraints.begin();
466 for (; aCIter != myConstraints.end(); ++aCIter)
467 if (aCIter->first->getKind() == SketchPlugin_ConstraintRigid::ID() &&
468 (!aCIter->first->data() || !aCIter->first->data()->isValid())) {
474 // remove invalid constraints
475 std::set<ConstraintPtr> anInvalidConstraints;
476 ConstraintConstraintMap::iterator aCIter = myConstraints.begin();
477 for (; aCIter != myConstraints.end(); ++aCIter) {
478 if (!aCIter->first->data() || !aCIter->first->data()->isValid())
479 anInvalidConstraints.insert(aCIter->first);
481 std::set<ConstraintPtr>::const_iterator aRemoveIt = anInvalidConstraints.begin();
482 for (; aRemoveIt != anInvalidConstraints.end(); ++aRemoveIt)
483 removeConstraint(*aRemoveIt);
484 // remove invalid features
485 myStorage->removeInvalidEntities();
490 // ============================================================================
491 // Function: removeTemporaryConstraints
492 // Class: SketchSolver_Group
493 // Purpose: remove all transient SLVS_C_WHERE_DRAGGED constraints after
494 // resolving the set of constraints
495 // ============================================================================
496 void SketchSolver_Group::removeTemporaryConstraints()
498 std::set<SolverConstraintPtr>::iterator aTmpIt = myTempConstraints.begin();
499 for (; aTmpIt != myTempConstraints.end(); ++aTmpIt)
502 if (!myTempConstraints.empty())
503 myStorage->verifyFixed();
504 myStorage->setNeedToResolve(false);
505 myTempConstraints.clear();
508 // ============================================================================
509 // Function: removeConstraint
510 // Class: SketchSolver_Group
511 // Purpose: remove constraint and all unused entities
512 // ============================================================================
513 void SketchSolver_Group::removeConstraint(ConstraintPtr theConstraint)
515 bool isFullyRemoved = true;
516 ConstraintConstraintMap::iterator aCIter = myConstraints.begin();
517 for (; aCIter != myConstraints.end(); aCIter++)
518 if (aCIter->first == theConstraint) {
519 if (!aCIter->second->remove()) // the constraint is not fully removed
520 isFullyRemoved = false;
523 if (aCIter == myConstraints.end())
527 myConstraints.erase(aCIter);
528 else if (aCIter != myConstraints.end() &&
529 aCIter->first->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
530 // Update multicoincidence
531 std::list<ConstraintPtr> aMultiCoinc;
532 SolverConstraintPtr aCoincidence = aCIter->second;
533 while (aCIter != myConstraints.end()) {
534 if (aCIter->second != aCoincidence) {
538 if (aCIter->first != theConstraint)
539 aMultiCoinc.push_back(aCIter->first);
540 aCIter->second->remove();
541 ConstraintConstraintMap::iterator aRemoveIt = aCIter++;
542 myConstraints.erase(aRemoveIt);
545 std::list<ConstraintPtr>::iterator anIt = aMultiCoinc.begin();
546 for (; anIt != aMultiCoinc.end(); ++anIt)
547 changeConstraint(*anIt);
551 // ============================================================================
552 // Function: isComplexConstraint
553 // Class: SketchSolver_Group
554 // Purpose: verifies the constraint is complex, i.e. it needs another constraints to be created before
555 // ============================================================================
556 bool SketchSolver_Group::isComplexConstraint(FeaturePtr theConstraint)
558 return theConstraint->getKind() == SketchPlugin_ConstraintFillet::ID() ||
559 theConstraint->getKind() == SketchPlugin_ConstraintMirror::ID() ||
560 theConstraint->getKind() == SketchPlugin_ConstraintTangent::ID();
563 // ============================================================================
564 // Function: setTemporary
565 // Class: SketchSolver_Group
566 // Purpose: append given constraint to the group of temporary constraints
567 // ============================================================================
568 void SketchSolver_Group::setTemporary(SolverConstraintPtr theConstraint)
570 myTempConstraints.insert(theConstraint);
574 // ============================================================================
575 // Function: checkFeatureValidity
576 // Class: SketchSolver_Group
577 // Purpose: verifies is the feature valid
578 // ============================================================================
579 bool SketchSolver_Group::checkFeatureValidity(FeaturePtr theFeature)
581 if (!theFeature || !theFeature->data()->isValid())
584 SessionPtr aMgr = ModelAPI_Session::get();
585 ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
586 return aFactory->validate(theFeature);
592 // =========== Auxiliary functions ========================================
593 static double featureToVal(FeaturePtr theFeature)
595 if (theFeature->getKind() == SketchPlugin_Sketch::ID())
596 return 0.0; // sketch
597 ConstraintPtr aConstraint = std::dynamic_pointer_cast<SketchPlugin_Constraint>(theFeature);
599 return 1.0; // features (arc, circle, line, point)
601 const std::string& anID = aConstraint->getKind();
602 if (anID == SketchPlugin_ConstraintCoincidence::ID()) {
603 AttributeRefAttrPtr anAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
604 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
605 AttributeRefAttrPtr anAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
606 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
607 if (anAttrA && anAttrB && (anAttrA->isObject() || anAttrB->isObject()))
608 return 2.0; // point-on-line and point-on-circle should go before points coincidence constraint
611 if (anID == SketchPlugin_ConstraintDistance::ID() ||
612 anID == SketchPlugin_ConstraintLength::ID() ||
613 anID == SketchPlugin_ConstraintRadius::ID())
615 if (anID == SketchPlugin_ConstraintAngle::ID())
617 if (anID == SketchPlugin_ConstraintHorizontal::ID() ||
618 anID == SketchPlugin_ConstraintVertical::ID() ||
619 anID == SketchPlugin_ConstraintParallel::ID() ||
620 anID == SketchPlugin_ConstraintPerpendicular::ID())
622 if (anID == SketchPlugin_ConstraintEqual::ID())
624 if (anID == SketchPlugin_ConstraintTangent::ID() ||
625 anID == SketchPlugin_ConstraintMirror::ID())
627 if (anID == SketchPlugin_ConstraintRigid::ID())
629 if (anID == SketchPlugin_MultiRotation::ID() ||
630 anID == SketchPlugin_MultiTranslation::ID())
633 // all other constraints are placed between Equal and Tangent constraints
637 static bool isLess(FeaturePtr theFeature1, FeaturePtr theFeature2)
639 return featureToVal(theFeature1) < featureToVal(theFeature2);
642 std::list<FeaturePtr> SketchSolver_Group::selectApplicableFeatures(const std::set<ObjectPtr>& theObjects)
644 std::list<FeaturePtr> aResult;
645 std::list<FeaturePtr>::iterator aResIt;
647 std::set<ObjectPtr>::const_iterator anObjIter = theObjects.begin();
648 for (; anObjIter != theObjects.end(); ++anObjIter) {
649 // Operate sketch itself and SketchPlugin features only.
650 // Also, the Fillet need to be skipped, because there are several separated constraints composing it.
651 FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anObjIter);
654 std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
655 std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
656 if ((aFeature->getKind() != SketchPlugin_Sketch::ID() && !aSketchFeature) ||
657 aFeature->getKind() == SketchPlugin_ConstraintFillet::ID())
660 // Find the place where to insert a feature
661 for (aResIt = aResult.begin(); aResIt != aResult.end(); ++aResIt)
662 if (isLess(aFeature, *aResIt))
664 aResult.insert(aResIt, aFeature);