src/SketchPlugin/SketchPlugin_Tools.cpp

   1 // Copyright (C) 2014-2019  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "SketchPlugin_Tools.h"
  21
  22 #include "SketchPlugin_Arc.h"
  23 #include "SketchPlugin_Circle.h"
  24 #include "SketchPlugin_ConstraintCoincidence.h"
  25 #include "SketchPlugin_ConstraintCoincidenceInternal.h"
  26 #include "SketchPlugin_ConstraintLength.h"
  27 #include "SketchPlugin_ConstraintTangent.h"
  28 #include "SketchPlugin_Ellipse.h"
  29 #include "SketchPlugin_EllipticArc.h"
  30 #include "SketchPlugin_Line.h"
  31 #include "SketchPlugin_Point.h"
  32 #include "SketchPlugin_Projection.h"
  33 #include "SketchPlugin_SketchEntity.h"
  34 #include "SketchPlugin_Split.h"
  35 #include "SketchPlugin_Trim.h"
  36
  37 #include <SketcherPrs_Tools.h>
  38
  39 #include <ModelAPI_AttributeDouble.h>
  40
  41 #include <ModelGeomAlgo_Point2D.h>
  42 #include <ModelGeomAlgo_Shape.h>
  43
  44 #include <GeomAPI_Dir2d.h>
  45 #include <GeomAPI_Edge.h>
  46 #include <GeomAPI_Pnt2d.h>
  47 #include <GeomAPI_XY.h>
  48
  49 #include <GeomAlgoAPI_CompoundBuilder.h>
  50 #include <GeomAlgoAPI_ShapeTools.h>
  51
  52 #include <GeomDataAPI_Point.h>
  53 #include <GeomDataAPI_Point2D.h>
  54
  55 #ifdef DEBUG_TRIM
  56 #include <iostream>
  57 #endif
  58
  59 namespace SketchPlugin_Tools {
  60
  61 void clearExpressions(AttributeDoublePtr theAttribute)
  62 {
  63   theAttribute->setText(std::string());
  64 }
  65
  66 void clearExpressions(AttributePointPtr theAttribute)
  67 {
  68   theAttribute->setText(std::string(), std::string(), std::string());
  69 }
  70
  71 void clearExpressions(AttributePoint2DPtr theAttribute)
  72 {
  73   theAttribute->setText(std::string(), std::string());
  74 }
  75
  76 void clearExpressions(AttributePtr theAttribute)
  77 {
  78   // Double
  79   AttributeDoublePtr anAttributeDouble =
  80       std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(theAttribute);
  81   if (anAttributeDouble.get())
  82     clearExpressions(anAttributeDouble);
  83   // Point
  84   AttributePointPtr anAttributePoint =
  85       std::dynamic_pointer_cast<GeomDataAPI_Point>(theAttribute);
  86   if (anAttributePoint.get())
  87     clearExpressions(anAttributePoint);
  88   // Point2D
  89   AttributePoint2DPtr anAttributePoint2D =
  90       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(theAttribute);
  91   if (anAttributePoint2D.get())
  92     clearExpressions(anAttributePoint2D);
  93 }
  94
  95 void clearExpressions(FeaturePtr theFeature)
  96 {
  97   if (!theFeature.get())
  98     return;
  99
 100   std::list<AttributePtr> anAttributes = theFeature->data()->attributes(std::string());
 101   std::list<AttributePtr>::iterator anAttributeIt = anAttributes.begin();
 102   for (; anAttributeIt != anAttributes.end(); ++anAttributeIt) {
 103     clearExpressions(*anAttributeIt);
 104   }
 105 }
 106
 107 std::shared_ptr<GeomAPI_Pnt2d> getCoincidencePoint(const FeaturePtr theStartCoin)
 108 {
 109   std::shared_ptr<GeomAPI_Pnt2d> aPnt = SketcherPrs_Tools::getPoint(theStartCoin.get(),
 110                                                           SketchPlugin_Constraint::ENTITY_A());
 111   if (aPnt.get() == NULL)
 112     aPnt = SketcherPrs_Tools::getPoint(theStartCoin.get(), SketchPlugin_Constraint::ENTITY_B());
 113   return aPnt;
 114 }
 115
 116 std::set<FeaturePtr> findCoincidentConstraints(const FeaturePtr& theFeature)
 117 {
 118   std::set<FeaturePtr> aCoincident;
 119   const std::set<AttributePtr>& aRefsList = theFeature->data()->refsToMe();
 120   std::set<AttributePtr>::const_iterator aIt;
 121   for (aIt = aRefsList.cbegin(); aIt != aRefsList.cend(); ++aIt) {
 122     FeaturePtr aConstrFeature = std::dynamic_pointer_cast<ModelAPI_Feature>((*aIt)->owner());
 123     if (aConstrFeature && aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID())
 124       aCoincident.insert(aConstrFeature);
 125   }
 126   return aCoincident;
 127 }
 128
 129 void findCoincidences(const FeaturePtr theStartCoin,
 130                       const std::string& theAttr,
 131                       std::set<FeaturePtr>& theList,
 132                       const bool theIsAttrOnly)
 133 {
 134   AttributeRefAttrPtr aPnt = theStartCoin->refattr(theAttr);
 135   if(!aPnt) {
 136     return;
 137   }
 138   FeaturePtr aObj = ModelAPI_Feature::feature(aPnt->object());
 139   if(theList.find(aObj) == theList.end()) {
 140     std::shared_ptr<GeomAPI_Pnt2d> aOrig = getCoincidencePoint(theStartCoin);
 141     if(aOrig.get() == NULL) {
 142       return;
 143     }
 144     if(!theIsAttrOnly || !aPnt->isObject()) {
 145       theList.insert(aObj);
 146     }
 147     std::set<FeaturePtr> aCoincidences = findCoincidentConstraints(aObj);
 148     std::set<FeaturePtr>::const_iterator aCIt = aCoincidences.begin();
 149     for (; aCIt != aCoincidences.end(); ++aCIt) {
 150       FeaturePtr aConstrFeature = *aCIt;
 151       std::shared_ptr<GeomAPI_Pnt2d> aPnt = getCoincidencePoint(aConstrFeature);
 152       if(aPnt.get() && aOrig->isEqual(aPnt)) {
 153         findCoincidences(aConstrFeature, SketchPlugin_ConstraintCoincidence::ENTITY_A(),
 154                          theList, theIsAttrOnly);
 155         findCoincidences(aConstrFeature, SketchPlugin_ConstraintCoincidence::ENTITY_B(),
 156                          theList, theIsAttrOnly);
 157       }
 158     }
 159   }
 160 }
 161
 162 std::set<FeaturePtr> findFeaturesCoincidentToPoint(const AttributePoint2DPtr& thePoint)
 163 {
 164   std::set<FeaturePtr> aCoincidentFeatures;
 165
 166   FeaturePtr anOwner = ModelAPI_Feature::feature(thePoint->owner());
 167   aCoincidentFeatures.insert(anOwner);
 168
 169   std::set<FeaturePtr> aCoincidences = findCoincidentConstraints(anOwner);
 170   std::set<FeaturePtr>::const_iterator aCIt = aCoincidences.begin();
 171   for (; aCIt != aCoincidences.end(); ++aCIt) {
 172     bool isPointUsedInCoincidence = false;
 173     AttributeRefAttrPtr anOtherCoincidentAttr;
 174     for (int i = 0; i < CONSTRAINT_ATTR_SIZE; ++i) {
 175       AttributeRefAttrPtr aRefAttr = (*aCIt)->refattr(SketchPlugin_Constraint::ATTRIBUTE(i));
 176       if (!aRefAttr)
 177         continue;
 178       if (!aRefAttr->isObject() && aRefAttr->attr() == thePoint)
 179         isPointUsedInCoincidence = true;
 180       else
 181         anOtherCoincidentAttr = aRefAttr;
 182     }
 183
 184     if (isPointUsedInCoincidence) {
 185       ObjectPtr anObj;
 186       if (anOtherCoincidentAttr->isObject())
 187         anObj = anOtherCoincidentAttr->object();
 188       else
 189         anObj = anOtherCoincidentAttr->attr()->owner();
 190       aCoincidentFeatures.insert(ModelAPI_Feature::feature(anObj));
 191     }
 192   }
 193
 194   return aCoincidentFeatures;
 195 }
 196
 197 // Container for point-point coincidences.
 198 // Useful to find points coincident to a given point.
 199 class CoincidentPoints
 200 {
 201 public:
 202   void addCoincidence(const AttributePoint2DPtr& thePoint1,
 203                       const AttributePoint2DPtr& thePoint2 = AttributePoint2DPtr())
 204   {
 205     std::list< std::set<AttributePoint2DPtr> >::iterator aFound1 = find(thePoint1);
 206     std::list< std::set<AttributePoint2DPtr> >::iterator aFound2 = find(thePoint2);
 207     if (aFound1 == myCoincidentPoints.end()) {
 208       if (aFound2 == myCoincidentPoints.end()) {
 209         std::set<AttributePoint2DPtr> aNewSet;
 210         aNewSet.insert(thePoint1);
 211         if (thePoint2)
 212           aNewSet.insert(thePoint2);
 213         myCoincidentPoints.push_back(aNewSet);
 214       } else
 215         aFound2->insert(thePoint1);
 216     } else if (aFound2 == myCoincidentPoints.end()) {
 217       if (thePoint2)
 218         aFound1->insert(thePoint2);
 219     } else {
 220       aFound1->insert(aFound2->begin(), aFound2->end());
 221       myCoincidentPoints.erase(aFound2);
 222     }
 223   }
 224
 225   std::set<AttributePoint2DPtr> coincidentPoints(const AttributePoint2DPtr& thePoint)
 226   {
 227     collectCoincidentPoints(thePoint);
 228
 229     std::list< std::set<AttributePoint2DPtr> >::iterator aFound = find(thePoint);
 230     if (aFound == myCoincidentPoints.end())
 231       return std::set<AttributePoint2DPtr>();
 232     return *aFound;
 233   }
 234
 235 private:
 236   void coincidences(const FeaturePtr& theFeature,
 237                     std::set<FeaturePtr>& theCoincidences) const
 238   {
 239     // iterate through coincideces for the given feature
 240     std::set<FeaturePtr> aCoincidences = SketchPlugin_Tools::findCoincidentConstraints(theFeature);
 241     std::set<FeaturePtr>::const_iterator aCIt = aCoincidences.begin();
 242     for (; aCIt != aCoincidences.end(); ++aCIt)
 243     {
 244       if (theCoincidences.find(*aCIt) != theCoincidences.end())
 245         continue; // already processed
 246       theCoincidences.insert(*aCIt);
 247       // iterate on coincident attributes
 248       for (int i = 0, aPtInd = 0; i < CONSTRAINT_ATTR_SIZE; ++i) {
 249         AttributeRefAttrPtr aRefAttr = (*aCIt)->refattr(SketchPlugin_Constraint::ATTRIBUTE(i));
 250         if (aRefAttr && !aRefAttr->isObject())
 251         {
 252           FeaturePtr anOwner = ModelAPI_Feature::feature(aRefAttr->attr()->owner());
 253           if (anOwner != theFeature)
 254             coincidences(anOwner, theCoincidences);
 255         }
 256       }
 257     }
 258   }
 259
 260   // Iteratively search points coincident to the given point
 261   // (two points may be coincident through the third point)
 262   void collectCoincidentPoints(const AttributePoint2DPtr& thePoint)
 263   {
 264     AttributePoint2DPtr aPoints[2];
 265
 266     FeaturePtr anOwner = ModelAPI_Feature::feature(thePoint->owner());
 267     std::set<FeaturePtr> aCoincidences;
 268     coincidences(anOwner, aCoincidences);
 269
 270     std::set<FeaturePtr>::const_iterator aCIt = aCoincidences.begin();
 271     for (; aCIt != aCoincidences.end(); ++aCIt) {
 272       aPoints[0] = AttributePoint2DPtr();
 273       aPoints[1] = AttributePoint2DPtr();
 274       for (int i = 0, aPtInd = 0; i < CONSTRAINT_ATTR_SIZE; ++i) {
 275         AttributeRefAttrPtr aRefAttr = (*aCIt)->refattr(SketchPlugin_Constraint::ATTRIBUTE(i));
 276         if (aRefAttr && !aRefAttr->isObject())
 277           aPoints[aPtInd++] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aRefAttr->attr());
 278       }
 279
 280       if (aPoints[0] && aPoints[1])
 281         addCoincidence(aPoints[0], aPoints[1]);
 282     }
 283   }
 284
 285   std::list< std::set<AttributePoint2DPtr> >::iterator find(const AttributePoint2DPtr& thePoint)
 286   {
 287     std::list< std::set<AttributePoint2DPtr> >::iterator aSeek = myCoincidentPoints.begin();
 288     for (; aSeek != myCoincidentPoints.end(); ++aSeek)
 289       if (aSeek->find(thePoint) != aSeek->end())
 290         return aSeek;
 291     return myCoincidentPoints.end();
 292   }
 293
 294 private:
 295   std::list< std::set<AttributePoint2DPtr> > myCoincidentPoints;
 296 };
 297
 298 std::set<AttributePoint2DPtr> findPointsCoincidentToPoint(const AttributePoint2DPtr& thePoint)
 299 {
 300   CoincidentPoints aCoincidentPoints;
 301   return aCoincidentPoints.coincidentPoints(thePoint);
 302 }
 303
 304 void resetAttribute(SketchPlugin_Feature* theFeature,
 305                     const std::string& theId)
 306 {
 307   AttributePtr anAttr = theFeature->attribute(theId);
 308   if(anAttr.get()) {
 309     anAttr->reset();
 310   }
 311 }
 312
 313 void createCoincidenceOrTangency(SketchPlugin_Feature* theFeature,
 314                                  const std::string& theId,
 315                                  const AttributePtr theAttr,
 316                                  const ObjectPtr theObject,
 317                                  const bool theIsCanBeTangent)
 318 {
 319   AttributeRefAttrPtr aRefAttr = theFeature->refattr(theId);
 320   if(aRefAttr.get() && aRefAttr->isInitialized()) {
 321     FeaturePtr aConstraint;
 322     if(!theIsCanBeTangent) {
 323       aConstraint = theFeature->sketch()
 324                               ->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 325     } else {
 326       if(aRefAttr->isObject()) {
 327         ObjectPtr anObject = aRefAttr->object();
 328         FeaturePtr aFeature = ModelAPI_Feature::feature(anObject);
 329         if(aFeature->getKind() == SketchPlugin_Point::ID()) {
 330           aConstraint = theFeature->sketch()
 331                                   ->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 332         } else {
 333           aConstraint = theFeature->sketch()
 334                                   ->addFeature(SketchPlugin_ConstraintTangent::ID());
 335         }
 336       } else {
 337         aConstraint = theFeature->sketch()
 338                                 ->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 339       }
 340     }
 341     AttributeRefAttrPtr aRefAttrA = aConstraint->refattr(SketchPlugin_Constraint::ENTITY_A());
 342     aRefAttr->isObject() ? aRefAttrA->setObject(aRefAttr->object())
 343                          : aRefAttrA->setAttr(aRefAttr->attr());
 344     AttributeRefAttrPtr aRefAttrB = aConstraint->refattr(SketchPlugin_Constraint::ENTITY_B());
 345     if(theObject.get()) {
 346       aRefAttrB->setObject(theObject);
 347     } else if(theAttr.get()) {
 348       aRefAttrB->setAttr(theAttr);
 349     }
 350   }
 351 }
 352
 353 void convertRefAttrToPointOrTangentCurve(const AttributeRefAttrPtr&      theRefAttr,
 354                                          const AttributePtr&             theDefaultAttr,
 355                                          std::shared_ptr<GeomAPI_Shape>& theTangentCurve,
 356                                          std::shared_ptr<GeomAPI_Pnt2d>& thePassingPoint)
 357 {
 358   AttributePtr anAttr = theDefaultAttr;
 359   if (theRefAttr->isObject()) {
 360     FeaturePtr aTgFeature = ModelAPI_Feature::feature(theRefAttr->object());
 361     if (aTgFeature) {
 362       if (aTgFeature->getKind() != SketchPlugin_Point::ID()) {
 363         theTangentCurve = aTgFeature->lastResult()->shape();
 364         return;
 365       }
 366       anAttr = aTgFeature->attribute(SketchPlugin_Point::COORD_ID());
 367     }
 368   } else
 369     anAttr = theRefAttr->attr();
 370
 371   thePassingPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr)->pnt();
 372 }
 373
 374
 375 FeaturePtr createConstraintAttrAttr(SketchPlugin_Sketch* theSketch,
 376                                     const std::string& theConstraintId,
 377                                     const AttributePtr& theFirstAttribute,
 378                                     const AttributePtr& theSecondAttribute)
 379 {
 380   FeaturePtr aConstraint = theSketch->addFeature(theConstraintId);
 381   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 382                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 383   aRefAttr->setAttr(theFirstAttribute);
 384
 385   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 386                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 387   aRefAttr->setAttr(theSecondAttribute);
 388
 389 #if defined(DEBUG_TRIM) || defined(DEBUG_SPLIT)
 390   std::cout << "<createConstraint to attribute> :"
 391             << " first attribute - " << theFirstAttribute->id()
 392             << " second attribute - " << theSecondAttribute->id()
 393             << std::endl;
 394 #endif
 395
 396   return aConstraint;
 397 }
 398
 399 FeaturePtr createConstraintAttrObject(SketchPlugin_Sketch* theSketch,
 400                                       const std::string& theConstraintId,
 401                                       const AttributePtr& theFirstAttribute,
 402                                       const ObjectPtr& theSecondObject)
 403 {
 404   FeaturePtr aConstraint = theSketch->addFeature(theConstraintId);
 405   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 406                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 407   aRefAttr->setAttr(theFirstAttribute);
 408
 409   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 410                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 411   aRefAttr->setObject(theSecondObject);
 412
 413 #if defined(DEBUG_TRIM) || defined(DEBUG_SPLIT)
 414   std::cout << "<createConstraint to attribute> :"
 415             << " first attribute - " << theFirstAttribute->id()
 416             << " second object - " << ModelAPI_Feature::feature(theSecondObject)->getKind()
 417             << std::endl;
 418 #endif
 419
 420   return aConstraint;
 421 }
 422
 423 FeaturePtr createConstraintObjectObject(SketchPlugin_Sketch* theSketch,
 424                                         const std::string& theConstraintId,
 425                                         const ObjectPtr& theFirstObject,
 426                                         const ObjectPtr& theSecondObject)
 427 {
 428   FeaturePtr aConstraint = theSketch->addFeature(theConstraintId);
 429   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 430                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 431   aRefAttr->setObject(theFirstObject);
 432
 433   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 434                                  aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 435   aRefAttr->setObject(theSecondObject);
 436
 437 #if defined(DEBUG_TRIM) || defined(DEBUG_SPLIT)
 438   std::cout << "<createConstraint to attribute> :"
 439             << " first object - " << ModelAPI_Feature::feature(theFirstObject)->getKind()
 440             << " second object - " << ModelAPI_Feature::feature(theSecondObject)->getKind()
 441             << std::endl;
 442 #endif
 443
 444   return aConstraint;
 445 }
 446
 447 void createAuxiliaryPointOnEllipse(const FeaturePtr& theEllipseFeature,
 448                                    const std::string& theEllipsePoint)
 449 {
 450   SketchPlugin_Sketch* aSketch =
 451       std::dynamic_pointer_cast<SketchPlugin_Feature>(theEllipseFeature)->sketch();
 452
 453   FeaturePtr aPointFeature = aSketch->addFeature(SketchPlugin_Point::ID());
 454   aPointFeature->boolean(SketchPlugin_Point::AUXILIARY_ID())->setValue(true);
 455   aPointFeature->reference(SketchPlugin_Point::PARENT_ID())->setValue(theEllipseFeature);
 456
 457   AttributePoint2DPtr anElPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 458     theEllipseFeature->attribute(theEllipsePoint));
 459
 460   AttributePoint2DPtr aCoord = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 461     aPointFeature->attribute(SketchPlugin_Point::COORD_ID()));
 462   aCoord->setValue(anElPoint->x(), anElPoint->y());
 463
 464   aPointFeature->execute();
 465   std::string aName = theEllipseFeature->name() + "_" + theEllipsePoint;
 466   aPointFeature->data()->setName(aName);
 467   aPointFeature->lastResult()->data()->setName(aName);
 468
 469   createConstraintAttrAttr(aSketch,
 470       SketchPlugin_ConstraintCoincidenceInternal::ID(), anElPoint, aCoord);
 471 }
 472
 473 void createAuxiliaryAxisOfEllipse(const FeaturePtr& theEllipseFeature,
 474                                   const std::string& theStartPoint,
 475                                   const std::string& theEndPoint)
 476 {
 477   SketchPlugin_Sketch* aSketch =
 478       std::dynamic_pointer_cast<SketchPlugin_Feature>(theEllipseFeature)->sketch();
 479
 480   FeaturePtr aLineFeature = aSketch->addFeature(SketchPlugin_Line::ID());
 481   aLineFeature->boolean(SketchPlugin_Point::AUXILIARY_ID())->setValue(true);
 482   aLineFeature->reference(SketchPlugin_Point::PARENT_ID())->setValue(theEllipseFeature);
 483
 484   AttributePoint2DPtr aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 485     theEllipseFeature->attribute(theStartPoint));
 486   AttributePoint2DPtr aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 487     theEllipseFeature->attribute(theEndPoint));
 488
 489   AttributePoint2DPtr aLineStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 490     aLineFeature->attribute(SketchPlugin_Line::START_ID()));
 491   aLineStart->setValue(aStartPoint->x(), aStartPoint->y());
 492
 493   AttributePoint2DPtr aLineEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 494     aLineFeature->attribute(SketchPlugin_Line::END_ID()));
 495   aLineEnd->setValue(aEndPoint->x(), aEndPoint->y());
 496
 497   aLineFeature->execute();
 498   std::string aName = theEllipseFeature->name() + "_" +
 499     (theStartPoint == SketchPlugin_Ellipse::MAJOR_AXIS_START_ID() ? "major_axis" : "minor_axis");
 500   aLineFeature->data()->setName(aName);
 501   aLineFeature->lastResult()->data()->setName(aName);
 502
 503   createConstraintAttrAttr(aSketch,
 504       SketchPlugin_ConstraintCoincidenceInternal::ID(), aStartPoint, aLineStart);
 505   createConstraintAttrAttr(aSketch,
 506       SketchPlugin_ConstraintCoincidenceInternal::ID(), aEndPoint, aLineEnd);
 507 }
 508
 509 GeomPnt2dPtr flyoutPointCoordinates(const ConstraintPtr& theConstraint)
 510 {
 511   // currently process Length constraints only
 512   if (theConstraint->getKind() != SketchPlugin_ConstraintLength::ID())
 513     return GeomPnt2dPtr();
 514
 515   AttributeRefAttrPtr aLineAttr = theConstraint->refattr(SketchPlugin_Constraint::ENTITY_A());
 516   if (!aLineAttr || !aLineAttr->isObject())
 517     return GeomPnt2dPtr();
 518   FeaturePtr aLine = ModelAPI_Feature::feature(aLineAttr->object());
 519   if (!aLine || aLine->getKind() != SketchPlugin_Line::ID())
 520     return GeomPnt2dPtr();
 521
 522   std::shared_ptr<GeomAPI_XY> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 523       aLine->attribute(SketchPlugin_Line::START_ID()))->pnt()->xy();
 524   std::shared_ptr<GeomAPI_XY> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 525       aLine->attribute(SketchPlugin_Line::END_ID()))->pnt()->xy();
 526
 527   std::shared_ptr<GeomDataAPI_Point2D> aFlyoutAttr =
 528       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 529       theConstraint->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 530   std::shared_ptr<GeomAPI_Pnt2d> aFltPnt = aFlyoutAttr->pnt();
 531
 532   std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
 533
 534   double X = aStartPnt->x() + aFltPnt->x() * aLineDir->x() - aFltPnt->y() * aLineDir->y();
 535   double Y = aStartPnt->y() + aFltPnt->x() * aLineDir->y() + aFltPnt->y() * aLineDir->x();
 536
 537   return GeomPnt2dPtr(new GeomAPI_Pnt2d(X, Y));
 538 }
 539
 540
 541 void customizeFeaturePrs(const AISObjectPtr& thePrs, bool isAxiliary)
 542 {
 543   std::vector<int> aColor;
 544   int aWidth = 1;
 545   if (isAxiliary) {
 546     thePrs->setLineStyle(SketchPlugin_SketchEntity::SKETCH_LINE_STYLE_AUXILIARY());
 547     aColor = Config_PropManager::color("Visualization", "sketch_auxiliary_color");
 548     aWidth = SketchPlugin_SketchEntity::SKETCH_LINE_WIDTH_AUXILIARY();
 549   }
 550   else {
 551     thePrs->setLineStyle(SketchPlugin_SketchEntity::SKETCH_LINE_STYLE());
 552     aColor = Config_PropManager::color("Visualization", "sketch_entity_color");
 553     aWidth = Config_PropManager::integer("Visualization", "sketch_line_width");
 554   }
 555   thePrs->setWidth(aWidth);
 556   thePrs->setColor(aColor[0], aColor[1], aColor[2]);
 557 }
 558
 559 void setDimensionColor(const AISObjectPtr& theDimPrs)
 560 {
 561   std::vector<int> aColor = Config_PropManager::color("Visualization", "sketch_dimension_color");
 562   if (aColor.size() == 3)
 563     theDimPrs->setColor(aColor[0], aColor[1], aColor[2]);
 564 }
 565
 566 } // namespace SketchPlugin_Tools
 567
 568
 569 // =================================================================================================
 570 //                 namespace SketchPlugin_SegmentationTools
 571 // =================================================================================================
 572
 573 void SketchPlugin_SegmentationTools::getFeaturePoints(const FeaturePtr& theFeature,
 574                                                       AttributePoint2DPtr& theStartPointAttr,
 575                                                       AttributePoint2DPtr& theEndPointAttr)
 576 {
 577   std::string aFeatureKind = theFeature->getKind();
 578   std::string aStartAttributeName, anEndAttributeName;
 579   if (aFeatureKind == SketchPlugin_Line::ID()) {
 580     aStartAttributeName = SketchPlugin_Line::START_ID();
 581     anEndAttributeName = SketchPlugin_Line::END_ID();
 582   }
 583   else if (aFeatureKind == SketchPlugin_Arc::ID()) {
 584     aStartAttributeName = SketchPlugin_Arc::START_ID();
 585     anEndAttributeName = SketchPlugin_Arc::END_ID();
 586   }
 587   else if (aFeatureKind == SketchPlugin_EllipticArc::ID()) {
 588     aStartAttributeName = SketchPlugin_EllipticArc::START_POINT_ID();
 589     anEndAttributeName = SketchPlugin_EllipticArc::END_POINT_ID();
 590   }
 591   if (!aStartAttributeName.empty() && !anEndAttributeName.empty()) {
 592     theStartPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 593         theFeature->attribute(aStartAttributeName));
 594     theEndPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 595         theFeature->attribute(anEndAttributeName));
 596   }
 597 }
 598
 599
 600 void SketchPlugin_SegmentationTools::getRefAttributes(
 601     const FeaturePtr& theFeature,
 602     std::map<AttributePtr, std::list<AttributePtr> >& theRefs,
 603     std::list<AttributePtr>& theRefsToFeature)
 604 {
 605   theRefs.clear();
 606
 607   std::list<AttributePtr> aPointAttributes =
 608     theFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
 609   std::set<AttributePtr> aPointAttributesSet;
 610
 611   std::list<AttributePtr>::const_iterator aPIt =
 612     aPointAttributes.begin(), aPLast = aPointAttributes.end();
 613   for (; aPIt != aPLast; aPIt++)
 614     aPointAttributesSet.insert(*aPIt);
 615
 616   std::set<AttributePtr> aRefsAttributes = theFeature->lastResult()->data()->refsToMe();
 617   std::set<AttributePtr> aFRefsList = theFeature->data()->refsToMe();
 618   aRefsAttributes.insert(aFRefsList.begin(), aFRefsList.end());
 619
 620   std::set<AttributePtr>::const_iterator aIt;
 621   for (aIt = aRefsAttributes.cbegin(); aIt != aRefsAttributes.cend(); ++aIt) {
 622     AttributePtr anAttr = (*aIt);
 623     FeaturePtr anAttrFeature = ModelAPI_Feature::feature(anAttr->owner());
 624     if (!anAttrFeature->isMacro() && // <- skip reference from Trim or Split feature
 625         anAttr.get() && anAttr->attributeType() == ModelAPI_AttributeRefAttr::typeId()) {
 626       AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(anAttr);
 627       if (!aRefAttr->isObject()) { // find attributes referenced to feature point attributes
 628         AttributePtr anAttrInRef = aRefAttr->attr();
 629         if (anAttrInRef.get() &&
 630             aPointAttributesSet.find(anAttrInRef) != aPointAttributesSet.end()) {
 631           if (theRefs.find(anAttrInRef) != theRefs.end())
 632             theRefs[anAttrInRef].push_back(aRefAttr);
 633           else {
 634             std::list<AttributePtr> anAttrList;
 635             anAttrList.push_back(aRefAttr);
 636             theRefs[anAttrInRef] = anAttrList;
 637           }
 638         }
 639       }
 640       else { // find attributes referenced to feature itself
 641         theRefsToFeature.push_back(anAttr);
 642       }
 643     }
 644   }
 645 }
 646
 647 GeomShapePtr SketchPlugin_SegmentationTools::getSubShape(
 648     SketchPlugin_Feature* theFeature,
 649     const std::string& theObjectAttributeId,
 650     const std::string& thePointAttributeId,
 651     std::map<ObjectPtr, std::set<GeomShapePtr> >& theCashedShapes,
 652     std::map<ObjectPtr, GeomAlgoAPI_ShapeTools::PointToRefsMap>& theObjectToPoints)
 653 {
 654   GeomShapePtr aBaseShape;
 655
 656   AttributeReferencePtr anObjectAttr = theFeature->reference(theObjectAttributeId);
 657   ObjectPtr aBaseObject = anObjectAttr->value();
 658   if (!aBaseObject.get())
 659     return aBaseShape;
 660
 661   // point on feature
 662   AttributePoint2DPtr aPointAttr =
 663       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(theFeature->attribute(thePointAttributeId));
 664   std::shared_ptr<GeomAPI_Pnt2d> anAttributePnt2d = aPointAttr->pnt();
 665   std::shared_ptr<GeomAPI_Pnt> anAttributePnt =
 666       theFeature->sketch()->to3D(anAttributePnt2d->x(), anAttributePnt2d->y());
 667
 668   if (theCashedShapes.find(aBaseObject) == theCashedShapes.end())
 669     fillObjectShapes(theFeature, aBaseObject, theCashedShapes, theObjectToPoints);
 670
 671   std::shared_ptr<GeomAPI_Pnt> aStartPoint;
 672   std::shared_ptr<GeomAPI_Pnt> aSecondPoint;
 673   const std::set<GeomShapePtr>& aShapes = theCashedShapes[aBaseObject];
 674   std::set<GeomShapePtr>::const_iterator anIt = aShapes.begin(), aLast = aShapes.end();
 675   for (; anIt != aLast; anIt++) {
 676     GeomShapePtr aCurrentShape = *anIt;
 677     std::shared_ptr<GeomAPI_Pnt> aProjectedPoint;
 678     if (ModelGeomAlgo_Point2D::isPointOnEdge(aCurrentShape, anAttributePnt, aProjectedPoint)) {
 679       if (theFeature->getKind() == SketchPlugin_Split::ID()) {
 680         // for Split operation collect start and end points of the shape
 681         if (aCurrentShape->shapeType() == GeomAPI_Shape::EDGE) {
 682           std::shared_ptr<GeomAPI_Edge> anEdge(new GeomAPI_Edge(aCurrentShape));
 683           aStartPoint = anEdge->firstPoint();
 684           aSecondPoint = anEdge->lastPoint();
 685         }
 686       }
 687       else
 688         aBaseShape = aCurrentShape;
 689       break;
 690     }
 691   }
 692
 693   if (!aStartPoint.get() || !aSecondPoint.get())
 694     return aBaseShape;
 695
 696   FeaturePtr aBaseFeature = ModelAPI_Feature::feature(aBaseObject);
 697   if (anObjectAttr->isInitialized() && aBaseFeature.get() && aPointAttr->isInitialized()) {
 698     ResultPtr aResult = aBaseFeature->lastResult();
 699     GeomShapePtr aResultShape = aResult->shape();
 700     std::list<std::shared_ptr<GeomAPI_Pnt> > aPoints;
 701
 702     aPoints.push_back(aStartPoint);
 703     aPoints.push_back(aSecondPoint);
 704
 705     std::set<std::shared_ptr<GeomAPI_Shape> > aSplitShapes;
 706     GeomAlgoAPI_ShapeTools::splitShape_p(aResultShape, aPoints, aSplitShapes);
 707     aBaseShape = GeomAlgoAPI_ShapeTools::findShape(aPoints, aSplitShapes);
 708   }
 709   return aBaseShape;
 710 }
 711
 712 void SketchPlugin_SegmentationTools::fillObjectShapes(
 713     SketchPlugin_Feature* theOpFeature,
 714     const ObjectPtr& theObject,
 715     std::map<ObjectPtr, std::set<GeomShapePtr> >& theCashedShapes,
 716     std::map<ObjectPtr, GeomAlgoAPI_ShapeTools::PointToRefsMap>& theObjectToPoints)
 717 {
 718   SketchPlugin_Sketch* aSketch = theOpFeature->sketch();
 719
 720   GeomAlgoAPI_ShapeTools::PointToRefsMap aPoints;
 721   std::set<GeomShapePtr> aShapes;
 722
 723   std::set<AttributePoint2DPtr > aRefAttributes;
 724   // current feature
 725   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 726   std::set<ResultPtr> anEdgeShapes;
 727   // edges on feature
 728   ModelGeomAlgo_Shape::shapesOfType(aFeature, GeomAPI_Shape::EDGE, anEdgeShapes);
 729   if (!anEdgeShapes.empty()) {
 730     GeomShapePtr aFeatureShape = (*anEdgeShapes.begin())->shape();
 731
 732     // coincidences to the feature
 733     ModelGeomAlgo_Point2D::getPointsOfReference(aFeature, SketchPlugin_ConstraintCoincidence::ID(),
 734                          aRefAttributes, SketchPlugin_Point::ID(), SketchPlugin_Point::COORD_ID());
 735     // layed on feature coincidences to divide it on several shapes
 736     std::shared_ptr<ModelAPI_Data> aData = aSketch->data();
 737     std::shared_ptr<GeomDataAPI_Point> aC = std::dynamic_pointer_cast<GeomDataAPI_Point>(
 738         aData->attribute(SketchPlugin_Sketch::ORIGIN_ID()));
 739     std::shared_ptr<GeomDataAPI_Dir> aX = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 740         aData->attribute(SketchPlugin_Sketch::DIRX_ID()));
 741     std::shared_ptr<GeomDataAPI_Dir> aNorm = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
 742         aData->attribute(SketchPlugin_Sketch::NORM_ID()));
 743     std::shared_ptr<GeomAPI_Dir> aY(new GeomAPI_Dir(aNorm->dir()->cross(aX->dir())));
 744
 745     ModelGeomAlgo_Point2D::getPointsInsideShape(aFeatureShape, aRefAttributes, aC->pnt(),
 746                                                   aX->dir(), aY, aPoints);
 747
 748     if (theOpFeature->getKind() == SketchPlugin_Trim::ID()) {
 749       // collect all intersection points with other edges for Trim operation only
 750       std::list<FeaturePtr> aFeatures;
 751       for (int i = 0; i < aSketch->numberOfSubs(); i++) {
 752         FeaturePtr aFeature = aSketch->subFeature(i);
 753         if (aFeature.get() && aFeature->getKind() != SketchPlugin_Projection::ID())
 754           aFeatures.push_back(aFeature);
 755       }
 756       ModelGeomAlgo_Point2D::getPointsIntersectedShape(aFeature, aFeatures, aPoints);
 757     }
 758
 759     if (!aPoints.empty())
 760       GeomAlgoAPI_ShapeTools::splitShape(aFeatureShape, aPoints, aShapes);
 761   }
 762   theObjectToPoints[theObject] = aPoints;
 763   theCashedShapes[theObject] = aShapes;
 764 }
 765
 766 void SketchPlugin_SegmentationTools::updateRefAttConstraints(
 767     const std::map<AttributePtr, std::list<AttributePtr> >& theBaseRefAttributes,
 768     const std::set<std::pair<AttributePtr, AttributePtr> >& theModifiedAttributes)
 769 {
 770 #if defined DEBUG_SPLIT || defined DEBUG_TRIM
 771   std::cout << "updateRefAttConstraints" << std::endl;
 772 #endif
 773
 774   std::set<std::pair<AttributePtr, AttributePtr> >::const_iterator
 775     anIt = theModifiedAttributes.begin(),  aLast = theModifiedAttributes.end();
 776   for (; anIt != aLast; anIt++) {
 777     AttributePtr anAttribute = anIt->first;
 778     AttributePtr aNewAttribute = anIt->second;
 779
 780     // not found in references
 781     if (!aNewAttribute.get() ||
 782         theBaseRefAttributes.find(anAttribute) == theBaseRefAttributes.end())
 783       continue;
 784     std::list<AttributePtr> aRefAttributes = theBaseRefAttributes.at(anAttribute);
 785     std::list<AttributePtr>::const_iterator aRefIt = aRefAttributes.begin(),
 786                                             aRLast = aRefAttributes.end();
 787
 788     for (; aRefIt != aRLast; aRefIt++) {
 789       AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(*aRefIt);
 790       if (aRefAttr.get()) {
 791         aRefAttr->setAttr(aNewAttribute);
 792 #ifdef DEBUG_SPLIT
 793         FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->owner());
 794         std::cout << " -" << getFeatureInfo(aFeature) << std::endl;
 795 #endif
 796       }
 797     }
 798   }
 799 }
 800
 801 void SketchPlugin_SegmentationTools::updateFeaturesAfterOperation(
 802     const std::set<FeaturePtr>& theFeaturesToUpdate)
 803 {
 804   std::set<FeaturePtr>::const_iterator anIt = theFeaturesToUpdate.begin(),
 805                                        aLast = theFeaturesToUpdate.end();
 806   for (; anIt != aLast; anIt++) {
 807     FeaturePtr aRefFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(*anIt);
 808     std::string aRefFeatureKind = aRefFeature->getKind();
 809     if (aRefFeatureKind == SketchPlugin_ConstraintLength::ID()) {
 810       std::shared_ptr<SketchPlugin_ConstraintLength> aLenghtFeature =
 811                               std::dynamic_pointer_cast<SketchPlugin_ConstraintLength>(*anIt);
 812       if (aLenghtFeature.get()) {
 813         std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 814             ModelAPI_AttributeDouble>(aLenghtFeature->attribute(SketchPlugin_Constraint::VALUE()));
 815         double aValue;
 816         if (aLenghtFeature->computeLenghtValue(aValue) && aValueAttr.get())
 817           aValueAttr->setValue(aValue);
 818       }
 819     }
 820   }
 821 }
 822
 823 AISObjectPtr SketchPlugin_SegmentationTools::getAISObject(
 824     AISObjectPtr thePrevious,
 825     SketchPlugin_Feature* theOpFeature,
 826     const std::string& thePreviewObjectAttrName,
 827     const std::string& thePreviewPointAttrName,
 828     const std::string& theSelectedObjectAttrName,
 829     const std::string& theSelectedPointAttrName)
 830 {
 831 #if defined DEBUG_SPLIT || defined DEBUG_TRIM_METHODS
 832   std::cout << "getAISObject: " << theOpFeature->data()->name() << std::endl;
 833 #endif
 834
 835   AISObjectPtr anAIS = thePrevious;
 836
 837   std::list<std::shared_ptr<GeomAPI_Shape> > aShapes;
 838   std::map<ObjectPtr, std::set<GeomShapePtr> > aCashedShapes;
 839   std::map<ObjectPtr, GeomAlgoAPI_ShapeTools::PointToRefsMap> aObjectToPoints;
 840   GeomShapePtr aPreviewShape = getSubShape(theOpFeature,
 841       thePreviewObjectAttrName, thePreviewPointAttrName, aCashedShapes, aObjectToPoints);
 842   if (aPreviewShape.get())
 843     aShapes.push_back(aPreviewShape);
 844   GeomShapePtr aSelectedShape = getSubShape(theOpFeature,
 845       theSelectedObjectAttrName, theSelectedPointAttrName, aCashedShapes, aObjectToPoints);
 846   if (aSelectedShape.get())
 847     aShapes.push_back(aSelectedShape);
 848
 849   if (aShapes.empty())
 850     return AISObjectPtr();
 851
 852   GeomShapePtr aBaseShape = GeomAlgoAPI_CompoundBuilder::compound(aShapes);
 853   if (!aBaseShape.get())
 854     return AISObjectPtr();
 855
 856   if (aBaseShape.get()) {
 857     if (!anAIS)
 858       anAIS = AISObjectPtr(new GeomAPI_AISObject);
 859     anAIS->createShape(aBaseShape);
 860
 861     std::vector<int> aColor;
 862     aColor = Config_PropManager::color("Visualization", "operation_remove_feature_color");
 863     double aWidth = SketchPlugin_SketchEntity::SKETCH_LINE_WIDTH();
 864     int aLineStyle = SketchPlugin_SketchEntity::SKETCH_LINE_STYLE();
 865     anAIS->setColor(aColor[0], aColor[1], aColor[2]);
 866     // width when there is not base object should be extened in several points
 867     // in order to see this preview over highlight
 868     anAIS->setWidth(aWidth+4);
 869     anAIS->setLineStyle(aLineStyle);
 870   }
 871   else
 872     anAIS = AISObjectPtr();
 873   return anAIS;
 874 }
 875
 876 #define GEOM_DATA_POINT2D(f, a) std::dynamic_pointer_cast<GeomDataAPI_Point2D>((f)->attribute(a))
 877
 878 FeaturePtr SketchPlugin_SegmentationTools::createLineFeature(
 879     const FeaturePtr& theBaseFeature,
 880     const std::shared_ptr<GeomAPI_Pnt2d>& theFirstPoint,
 881     const std::shared_ptr<GeomAPI_Pnt2d>& theSecondPoint)
 882 {
 883   FeaturePtr aFeature;
 884   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 885       std::dynamic_pointer_cast<SketchPlugin_Feature>(theBaseFeature);
 886   SketchPlugin_Sketch* aSketch = aSketchFeature->sketch();
 887   if (!aSketch || !theBaseFeature.get())
 888     return aFeature;
 889
 890   aFeature = aSketch->addFeature(SketchPlugin_Line::ID());
 891
 892   GEOM_DATA_POINT2D(aFeature, SketchPlugin_Line::START_ID())->setValue(theFirstPoint);
 893   GEOM_DATA_POINT2D(aFeature, SketchPlugin_Line::END_ID())->setValue(theSecondPoint);
 894
 895   aFeature->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(
 896       theBaseFeature->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value());
 897   aFeature->execute(); // to obtain result
 898
 899   return aFeature;
 900 }
 901
 902 struct ArcAttributes
 903 {
 904   std::string myKind;
 905   std::string myCenter;
 906   std::string myFocus;
 907   std::string myStart;
 908   std::string myEnd;
 909   std::string myReversed;
 910
 911   ArcAttributes() {}
 912
 913   ArcAttributes(const std::string& theKind) : myKind(theKind)
 914   {
 915     if (myKind == SketchPlugin_Arc::ID()) {
 916       myCenter = SketchPlugin_Arc::CENTER_ID();
 917       myStart = SketchPlugin_Arc::START_ID();
 918       myEnd = SketchPlugin_Arc::END_ID();
 919       myReversed = SketchPlugin_Arc::REVERSED_ID();
 920     }
 921     else if (myKind == SketchPlugin_Circle::ID()) {
 922       myCenter = SketchPlugin_Circle::CENTER_ID();
 923     }
 924     else if (myKind == SketchPlugin_Ellipse::ID()) {
 925       myCenter = SketchPlugin_Ellipse::CENTER_ID();
 926       myFocus = SketchPlugin_Ellipse::FIRST_FOCUS_ID();
 927     }
 928     else if (myKind == SketchPlugin_EllipticArc::ID()) {
 929       myCenter = SketchPlugin_EllipticArc::CENTER_ID();
 930       myFocus = SketchPlugin_EllipticArc::FIRST_FOCUS_ID();
 931       myStart = SketchPlugin_EllipticArc::START_POINT_ID();
 932       myEnd = SketchPlugin_EllipticArc::END_POINT_ID();
 933       myReversed = SketchPlugin_EllipticArc::REVERSED_ID();
 934     }
 935   }
 936 };
 937
 938 FeaturePtr SketchPlugin_SegmentationTools::createArcFeature(
 939     const FeaturePtr& theBaseFeature,
 940     const std::shared_ptr<GeomAPI_Pnt2d>& theFirstPoint,
 941     const std::shared_ptr<GeomAPI_Pnt2d>& theSecondPoint)
 942 {
 943   FeaturePtr aFeature;
 944   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 945       std::dynamic_pointer_cast<SketchPlugin_Feature>(theBaseFeature);
 946   SketchPlugin_Sketch* aSketch = aSketchFeature->sketch();
 947   if (!aSketch || !theBaseFeature.get())
 948     return aFeature;
 949
 950   ArcAttributes aBaseAttrs(theBaseFeature->getKind());
 951   ArcAttributes aTargetAttrs;
 952   if (aBaseAttrs.myKind == SketchPlugin_Arc::ID() ||
 953       aBaseAttrs.myKind == SketchPlugin_Circle::ID())
 954     aTargetAttrs = ArcAttributes(SketchPlugin_Arc::ID());
 955   else if (aBaseAttrs.myKind == SketchPlugin_Ellipse::ID() ||
 956            aBaseAttrs.myKind == SketchPlugin_EllipticArc::ID())
 957     aTargetAttrs = ArcAttributes(SketchPlugin_EllipticArc::ID());
 958
 959   if (aTargetAttrs.myKind.empty())
 960     return aFeature;
 961
 962   aFeature = aSketch->addFeature(aTargetAttrs.myKind);
 963   // update fillet arc: make the arc correct for sure, so, it is not needed to process
 964   // the "attribute updated"
 965   // by arc; moreover, it may cause cyclicity in hte mechanism of updater
 966   bool aWasBlocked = aFeature->data()->blockSendAttributeUpdated(true);
 967
 968   GEOM_DATA_POINT2D(aFeature, aTargetAttrs.myCenter)->setValue(
 969       GEOM_DATA_POINT2D(theBaseFeature, aBaseAttrs.myCenter)->pnt());
 970   if (!aTargetAttrs.myFocus.empty()) {
 971     GEOM_DATA_POINT2D(aFeature, aTargetAttrs.myFocus)->setValue(
 972         GEOM_DATA_POINT2D(theBaseFeature, aBaseAttrs.myFocus)->pnt());
 973   }
 974   GEOM_DATA_POINT2D(aFeature, aTargetAttrs.myStart)->setValue(theFirstPoint);
 975   GEOM_DATA_POINT2D(aFeature, aTargetAttrs.myEnd)->setValue(theSecondPoint);
 976
 977   aFeature->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(
 978       theBaseFeature->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->value());
 979
 980   /// fill referersed state of created arc as it is on the base arc
 981   bool aReversed = aBaseAttrs.myReversed.empty() ? false :
 982                    theBaseFeature->boolean(aBaseAttrs.myReversed)->value();
 983   aFeature->boolean(aTargetAttrs.myReversed)->setValue(aReversed);
 984
 985   aFeature->execute(); // to obtain result (need to calculate arc parameters before sending Update)
 986   aFeature->data()->blockSendAttributeUpdated(aWasBlocked);
 987
 988   return aFeature;
 989 }