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[modules/shaper.git] / src / PartSet / PartSet_SketcherMgr.cpp
1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
2
3 // File:        PartSet_SketcherMgr.cpp
4 // Created:     19 Dec 2014
5 // Author:      Vitaly SMETANNIKOV
6
7 #include "PartSet_SketcherMgr.h"
8 #include "PartSet_Module.h"
9 #include "PartSet_WidgetPoint2D.h"
10 #include "PartSet_Tools.h"
11
12 #include <XGUI_ModuleConnector.h>
13 #include <XGUI_Displayer.h>
14 #include <XGUI_Workshop.h>
15 #include <XGUI_Selection.h>
16 #include <XGUI_SelectionMgr.h>
17
18 #include <ModuleBase_IViewer.h>
19 #include <ModuleBase_IWorkshop.h>
20 #include <ModuleBase_IViewWindow.h>
21 #include <ModuleBase_Operation.h>
22 #include <ModuleBase_ISelection.h>
23 #include <ModuleBase_IPropertyPanel.h>
24 #include <ModuleBase_Operation.h>
25
26 #include <Events_Loop.h>
27
28 #include <SketchPlugin_Line.h>
29 #include <SketchPlugin_Sketch.h>
30 #include <SketchPlugin_Point.h>
31 #include <SketchPlugin_Arc.h>
32 #include <SketchPlugin_Circle.h>
33 #include <SketchPlugin_ConstraintLength.h>
34 #include <SketchPlugin_ConstraintDistance.h>
35 #include <SketchPlugin_ConstraintParallel.h>
36 #include <SketchPlugin_ConstraintPerpendicular.h>
37 #include <SketchPlugin_ConstraintRadius.h>
38 #include <SketchPlugin_ConstraintRigid.h>
39
40 #include <SelectMgr_IndexedMapOfOwner.hxx>
41 #include <StdSelect_BRepOwner.hxx>
42
43 #include <ModelAPI_Events.h>
44
45 #include <QMouseEvent>
46 #include <QApplication>
47
48
49
50
51 /// Returns list of unique objects by sum of objects from List1 and List2
52 QList<ObjectPtr> getSumList(const QList<ModuleBase_ViewerPrs>& theList1,
53                                        const QList<ModuleBase_ViewerPrs>& theList2)
54 {
55   QList<ObjectPtr> aRes;
56   foreach (ModuleBase_ViewerPrs aPrs, theList1) {
57     if (!aRes.contains(aPrs.object()))
58       aRes.append(aPrs.object());
59   }
60   foreach (ModuleBase_ViewerPrs aPrs, theList2) {
61     if (!aRes.contains(aPrs.object()))
62       aRes.append(aPrs.object());
63   }
64   return aRes;
65 }
66
67
68
69
70 PartSet_SketcherMgr::PartSet_SketcherMgr(PartSet_Module* theModule)
71   : QObject(theModule), myModule(theModule), myIsDragging(false), myDragDone(false)
72 {
73   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
74   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
75
76   connect(aViewer, SIGNAL(mousePress(ModuleBase_IViewWindow*, QMouseEvent*)),
77           this, SLOT(onMousePressed(ModuleBase_IViewWindow*, QMouseEvent*)));
78
79   connect(aViewer, SIGNAL(mouseRelease(ModuleBase_IViewWindow*, QMouseEvent*)),
80           this, SLOT(onMouseReleased(ModuleBase_IViewWindow*, QMouseEvent*)));
81
82   connect(aViewer, SIGNAL(mouseMove(ModuleBase_IViewWindow*, QMouseEvent*)),
83           this, SLOT(onMouseMoved(ModuleBase_IViewWindow*, QMouseEvent*)));
84
85   connect(aViewer, SIGNAL(mouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)),
86           this, SLOT(onMouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)));
87 }
88
89 PartSet_SketcherMgr::~PartSet_SketcherMgr()
90 {
91   if (!myPlaneFilter.IsNull())
92     myPlaneFilter.Nullify();
93 }
94
95 void PartSet_SketcherMgr::onMousePressed(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
96 {
97   // 
98   if (!(theEvent->buttons() & Qt::LeftButton))
99     return;
100
101   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
102   ModuleBase_Operation* aOperation = aWorkshop->currentOperation();
103   // Use only for sketch operations
104   if (aOperation && myCurrentSketch) {
105     if (!PartSet_Tools::sketchPlane(myCurrentSketch))
106       return;
107
108     bool isSketcher = (aOperation->id().toStdString() == SketchPlugin_Sketch::ID());
109     bool isSketchOpe = sketchOperationIdList().contains(aOperation->id());
110
111     // Avoid non-sketch operations
112     if ((!isSketchOpe) && (!isSketcher))
113       return;
114
115     bool isEditing = aOperation->isEditOperation();
116
117     // Ignore creation sketch operation
118     if ((!isSketcher) && (!isEditing))
119       return;
120
121     if (theEvent->modifiers()) {
122       // If user performs multiselection
123       if (isSketchOpe /* && (!isSketcher)*/)
124         if (!aOperation->commit())
125           aOperation->abort();
126       return;
127     }
128     // Remember highlighted objects for editing
129     ModuleBase_ISelection* aSelect = aWorkshop->selection();
130     QList<ModuleBase_ViewerPrs> aHighlighted = aSelect->getHighlighted();
131     QList<ModuleBase_ViewerPrs> aSelected = aSelect->getSelected();
132     myEditingFeatures.clear();
133     myEditingAttr.clear();
134
135     bool aHasShift = (theEvent->modifiers() & Qt::ShiftModifier);
136     QObjectPtrList aSelObjects;
137     if (aHasShift)
138       aSelObjects = getSumList(aHighlighted, aSelected);
139     else {
140       foreach (ModuleBase_ViewerPrs aPrs, aHighlighted) {
141         aSelObjects.append(aPrs.object());
142       }
143     }
144     if ((aSelObjects.size() == 0)) {
145       if (isSketchOpe && (!isSketcher))
146         // commit previous operation
147         if (!aOperation->commit())
148           aOperation->abort();
149       return;
150     }
151     if (aSelObjects.size() == 1) {
152       // Move by selected shape (vertex). Can be used only for single selection
153       foreach(ModuleBase_ViewerPrs aPrs, aHighlighted) {
154         FeaturePtr aFeature = ModelAPI_Feature::feature(aHighlighted.first().object());
155         if (aFeature) {
156           myEditingFeatures.append(aFeature);
157           TopoDS_Shape aShape = aPrs.shape();
158           if (!aShape.IsNull()) {
159             if (aShape.ShapeType() == TopAbs_VERTEX) {
160               AttributePtr aAttr = PartSet_Tools::findAttributeBy2dPoint(myEditingFeatures.first(), 
161                                                                          aShape, myCurrentSketch);
162               if (aAttr)
163                 myEditingAttr.append(aAttr);
164             }
165           }
166         }
167       }
168     } else {
169       // Provide multi-selection. Can be used only for features
170       foreach (ObjectPtr aObj, aSelObjects) {
171         FeaturePtr aFeature = ModelAPI_Feature::feature(aObj);
172         if (aFeature && (!myEditingFeatures.contains(aFeature)))
173           myEditingFeatures.append(aFeature);
174       }
175
176     }
177     // If nothing highlighted - return
178     if (myEditingFeatures.size() == 0)
179       return;
180
181     if (isSketcher) {
182       myIsDragging = true;
183       get2dPoint(theWnd, theEvent, myCurX, myCurY);
184       myDragDone = false;
185       aWorkshop->viewer()->enableMultiselection(false);
186       launchEditing();
187
188     } else if (isSketchOpe && isEditing) {
189       // If selected another object
190       aOperation->abort();
191
192       myIsDragging = true;
193       get2dPoint(theWnd, theEvent, myCurX, myCurY);
194       myDragDone = false;
195       aWorkshop->viewer()->enableMultiselection(false);
196
197       // This is necessary in order to finalize previous operation
198       QApplication::processEvents();
199       launchEditing();
200     }
201   }
202 }
203
204 void PartSet_SketcherMgr::onMouseReleased(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
205 {
206   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
207   ModuleBase_Operation* aOp = aWorkshop->currentOperation();
208   if (!aOp)
209     return;
210   if (!sketchOperationIdList().contains(aOp->id()))
211     return;
212
213   // Only for sketcher operations
214   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
215   if (myIsDragging) {
216     myIsDragging = false;
217     if (myDragDone) {
218       aViewer->enableMultiselection(true);
219       aOp->commit();
220       myEditingFeatures.clear();
221       myEditingAttr.clear();
222
223       // Reselect edited object
224       aViewer->AISContext()->MoveTo(theEvent->x(), theEvent->y(), theWnd->v3dView());
225       if (theEvent->modifiers() & Qt::ShiftModifier)
226         aViewer->AISContext()->ShiftSelect();
227       else
228         aViewer->AISContext()->Select();
229       return;
230     }
231   }
232   if (!aViewer->isMultiSelectionEnabled()) {
233     aViewer->enableMultiselection(true);
234   }
235 }
236
237 void PartSet_SketcherMgr::onMouseMoved(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
238 {
239   if (myIsDragging) {
240     ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
241     if (aOperation->id().toStdString() == SketchPlugin_Sketch::ID())
242       return; // No edit operation activated
243
244     static Events_ID anEvent = Events_Loop::eventByName(EVENT_OBJECT_MOVED);
245
246     Handle(V3d_View) aView = theWnd->v3dView();
247     gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
248     double aX, aY;
249     PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, aX, aY);
250     double dX =  aX - myCurX;
251     double dY =  aY - myCurY;
252
253     if ((aOperation->id().toStdString() == SketchPlugin_Line::ID()) &&
254         (myEditingAttr.size() == 1) && 
255         myEditingAttr.first()) {
256       // probably we have prehighlighted point
257       AttributePtr aAttr = myEditingAttr.first();
258       std::string aAttrId = aAttr->id();
259       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
260       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
261       // Find corresponded widget to provide dragging
262       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
263         if (aWgt->attributeID() == aAttrId) {
264           PartSet_WidgetPoint2D* aWgt2d = dynamic_cast<PartSet_WidgetPoint2D*>(aWgt);
265           if (aWgt2d) {
266             aWgt2d->setPoint(aWgt2d->x() + dX, aWgt2d->y() + dY);
267             break;
268           }
269         }
270       }
271     } else {
272       ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
273       XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(aWorkshop);
274       XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
275       bool isEnableUpdateViewer = aDisplayer->enableUpdateViewer(false);
276
277       foreach(FeaturePtr aFeature, myEditingFeatures) {
278         std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
279           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
280         if (aSketchFeature) {
281           // save the previous selection
282
283           std::list<AttributePtr> aSelectedAttributes;
284           std::list<ResultPtr> aSelectedResults;
285           getCurrentSelection(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes,
286                               aSelectedResults);
287           // save the previous selection: end
288
289           aSketchFeature->move(dX, dY);
290           // TODO: the selection restore should be after the AIS presentation is rebuilt
291           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
292           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
293
294           // restore the previous selection
295           SelectMgr_IndexedMapOfOwner anOwnersToSelect;
296           getSelectionOwners(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes,
297                              aSelectedResults, anOwnersToSelect);
298           aConnector->workshop()->selector()->setSelectedOwners(anOwnersToSelect, false);
299           // restore the previous selection
300         }
301         ModelAPI_EventCreator::get()->sendUpdated(aSketchFeature, anEvent, true);
302         Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
303       }
304       // TODO: set here
305       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
306       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
307
308       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
309       aDisplayer->enableUpdateViewer(isEnableUpdateViewer);
310       aDisplayer->updateViewer();
311     }
312     myDragDone = true;
313     myCurX = aX;
314     myCurY = aY;
315   }
316 }
317
318 void PartSet_SketcherMgr::onMouseDoubleClick(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
319 {
320   ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
321   if (aOperation && aOperation->isEditOperation()) {
322     std::string aId = aOperation->id().toStdString();
323     if ((aId == SketchPlugin_ConstraintLength::ID()) ||
324       (aId == SketchPlugin_ConstraintDistance::ID()) ||
325       (aId == SketchPlugin_ConstraintRadius::ID())) 
326     {
327       // Activate dimension value editing on double click
328       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
329       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
330       // Find corresponded widget to activate value editing
331       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
332         if (aWgt->attributeID() == "ConstraintValue") {
333           aWgt->focusTo();
334           return;
335         }
336       }
337     }
338   }
339 }
340
341 void PartSet_SketcherMgr::get2dPoint(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent, 
342                                 double& theX, double& theY)
343 {
344   Handle(V3d_View) aView = theWnd->v3dView();
345   gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
346   PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, theX, theY);
347 }
348
349 void PartSet_SketcherMgr::launchEditing()
350 {
351   if (myEditingFeatures.size() > 0) {
352     FeaturePtr aFeature = myEditingFeatures.first();
353     std::shared_ptr<SketchPlugin_Feature> aSPFeature = 
354               std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
355     if (aSPFeature) {
356       myModule->editFeature(aSPFeature);
357     }
358   }
359 }
360
361
362 QStringList PartSet_SketcherMgr::sketchOperationIdList()
363 {
364   static QStringList aIds;
365   if (aIds.size() == 0) {
366     aIds << SketchPlugin_Line::ID().c_str();
367     aIds << SketchPlugin_Point::ID().c_str();
368     aIds << SketchPlugin_Arc::ID().c_str();
369     aIds << SketchPlugin_Circle::ID().c_str();
370     aIds << SketchPlugin_ConstraintLength::ID().c_str();
371     aIds << SketchPlugin_ConstraintDistance::ID().c_str();
372     aIds << SketchPlugin_ConstraintRigid::ID().c_str();
373     aIds << SketchPlugin_ConstraintRadius::ID().c_str();
374     aIds << SketchPlugin_ConstraintPerpendicular::ID().c_str();
375     aIds << SketchPlugin_ConstraintParallel::ID().c_str();
376   }
377   return aIds;
378 }
379
380 void PartSet_SketcherMgr::startSketch(ModuleBase_Operation* theOperation)
381 {
382   // Display all sketcher sub-Objects
383   myCurrentSketch = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theOperation->feature());
384   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
385   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
386
387   // Hide sketcher result
388   std::list<ResultPtr> aResults = myCurrentSketch->results();
389   std::list<ResultPtr>::const_iterator aIt;
390   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
391     aDisplayer->erase((*aIt), false);
392   }
393   aDisplayer->erase(myCurrentSketch, false);
394
395   // Display sketcher objects
396   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
397     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
398     std::list<ResultPtr> aResults = aFeature->results();
399     std::list<ResultPtr>::const_iterator aIt;
400     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
401       aDisplayer->display((*aIt), false);
402     }
403     aDisplayer->display(aFeature, false);
404   }
405
406   if (myPlaneFilter.IsNull()) 
407     myPlaneFilter = new ModuleBase_ShapeInPlaneFilter();
408
409   myModule->workshop()->viewer()->addSelectionFilter(myPlaneFilter);
410   if (theOperation->isEditOperation()) {
411     // If it is editing of sketch then it means that plane is already defined
412     std::shared_ptr<GeomAPI_Pln> aPln = PartSet_Tools::sketchPlane(myCurrentSketch);
413     myPlaneFilter->setPlane(aPln->impl<gp_Pln>());
414   }
415   aDisplayer->updateViewer();
416 }
417
418 void PartSet_SketcherMgr::stopSketch(ModuleBase_Operation* theOperation)
419 {
420   DataPtr aData = myCurrentSketch->data();
421   if ((!aData) || (!aData->isValid())) {
422     // The sketch was aborted
423     myCurrentSketch = CompositeFeaturePtr();
424     myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
425     return; 
426   }
427   // Hide all sketcher sub-Objects
428   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
429   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
430   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
431     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
432     std::list<ResultPtr> aResults = aFeature->results();
433     std::list<ResultPtr>::const_iterator aIt;
434     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
435       aDisplayer->erase((*aIt), false);
436     }
437     aDisplayer->erase(aFeature, false);
438   }
439   // Display sketcher result
440   std::list<ResultPtr> aResults = myCurrentSketch->results();
441   std::list<ResultPtr>::const_iterator aIt;
442   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
443     aDisplayer->display((*aIt), false);
444   }
445   aDisplayer->display(myCurrentSketch);
446     
447   myCurrentSketch = CompositeFeaturePtr();
448   myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
449   aDisplayer->updateViewer();
450 }
451
452
453 void PartSet_SketcherMgr::onPlaneSelected(const std::shared_ptr<GeomAPI_Pln>& thePln)
454 {
455   myPlaneFilter->setPlane(thePln->impl<gp_Pln>());
456 }
457
458 void PartSet_SketcherMgr::getCurrentSelection(const ObjectPtr& theObject,
459                                               const FeaturePtr& theSketch,
460                                               ModuleBase_IWorkshop* theWorkshop,
461                                               std::list<AttributePtr>& theSelectedAttributes,
462                                               std::list<ResultPtr>& theSelectedResults)
463 {
464   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
465   if (aFeature.get() == NULL)
466     return;
467
468   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
469   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
470   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
471   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
472
473   // TODO: check all results and IPresentable feature
474   std::list<ResultPtr> aResults = aFeature->results();
475   std::list<ResultPtr>::const_iterator aIt;
476   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt)
477   {
478     ResultPtr aResult = *aIt;
479
480     AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
481     if (aAISObj.get() == NULL)
482       continue;
483     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
484     for (aContext->InitSelected(); aContext->MoreSelected(); aContext->NextSelected())
485     {
486       Handle(StdSelect_BRepOwner) aBRepOwner = Handle(StdSelect_BRepOwner)::DownCast(
487                                                                       aContext->SelectedOwner());
488       if (aBRepOwner.IsNull())
489         continue;
490
491       Handle(AIS_InteractiveObject) anIO = Handle(AIS_InteractiveObject)::DownCast(
492                                                                         aBRepOwner->Selectable());
493       if (anIO != anAISIO)
494         continue;
495
496       if (aBRepOwner->HasShape()) {
497         const TopoDS_Shape& aShape = aBRepOwner->Shape();
498         TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
499         if (aShapeType == TopAbs_VERTEX) {
500           AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(theObject,
501                                                                         aShape, theSketch);
502           if (aPntAttr.get() != NULL)
503             theSelectedAttributes.push_back(aPntAttr);
504         }
505         else if (aShapeType == TopAbs_EDGE) {
506           theSelectedResults.push_back(aResult);
507         }
508       }
509     }
510   }
511 }
512
513 void PartSet_SketcherMgr::getSelectionOwners(const ObjectPtr& theObject,
514                                              const FeaturePtr& theSketch,
515                                              ModuleBase_IWorkshop* theWorkshop,
516                                              const std::list<AttributePtr>& theSelectedAttributes,
517                                              const std::list<ResultPtr>& theSelectedResults,
518                                              SelectMgr_IndexedMapOfOwner& anOwnersToSelect)
519 {
520   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
521   if (aFeature.get() == NULL)
522     return;
523
524   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
525   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
526   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
527   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
528
529   // TODO: check all results and IPresentable feature
530   ResultPtr aResult = aFeature->firstResult();
531
532   AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
533
534   if (aAISObj.get() != NULL) {
535     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
536
537     SelectMgr_IndexedMapOfOwner aSelectedOwners;
538
539     aConnector->workshop()->selector()->selection()->entityOwners(anAISIO, aSelectedOwners);
540     for  ( Standard_Integer i = 1, n = aSelectedOwners.Extent(); i <= n; i++ ) {
541       Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast(aSelectedOwners(i));
542       if ( anOwner.IsNull() || !anOwner->HasShape() )
543         continue;
544       const TopoDS_Shape& aShape = anOwner->Shape();
545       TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
546       if (aShapeType == TopAbs_VERTEX) {
547         AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(aFeature, aShape, theSketch);
548         if (aPntAttr.get() != NULL) {
549           std::list<AttributePtr>::const_iterator anIt = theSelectedAttributes.begin(),
550                                                   aLast = theSelectedAttributes.end();
551           for (; anIt != aLast; anIt++) {
552             AttributePtr anAttrIt = *anIt;
553             if (anAttrIt.get() == aPntAttr.get()) {
554               anOwnersToSelect.Add(anOwner);
555             }
556           }
557         }
558       }
559     }
560   }
561 }