src/SketchSolver/PlaneGCSSolver/PlaneGCSSolver_Tools.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:    SketchSolver_Builder.cpp
   4 // Created: 25 Mar 2015
   5 // Author:  Artem ZHIDKOV
   6
   7 #include <PlaneGCSSolver_Tools.h>
   8 #include <PlaneGCSSolver_EdgeWrapper.h>
   9 #include <PlaneGCSSolver_PointWrapper.h>
  10 #include <PlaneGCSSolver_ScalarWrapper.h>
  11 #include <PlaneGCSSolver_ConstraintWrapper.h>
  12
  13 #include <SketchSolver_Constraint.h>
  14 #include <SketchSolver_ConstraintAngle.h>
  15 #include <SketchSolver_ConstraintCoincidence.h>
  16 #include <SketchSolver_ConstraintCollinear.h>
  17 #include <SketchSolver_ConstraintDistance.h>
  18 #include <SketchSolver_ConstraintEqual.h>
  19 #include <SketchSolver_ConstraintFixed.h>
  20 #include <SketchSolver_ConstraintLength.h>
  21 #include <SketchSolver_ConstraintMiddle.h>
  22 #include <SketchSolver_ConstraintMirror.h>
  23 #include <SketchSolver_ConstraintTangent.h>
  24 #include <SketchSolver_ConstraintMultiRotation.h>
  25 #include <SketchSolver_ConstraintMultiTranslation.h>
  26
  27 #include <SketchPlugin_ConstraintAngle.h>
  28 #include <SketchPlugin_ConstraintCoincidence.h>
  29 #include <SketchPlugin_ConstraintCollinear.h>
  30 #include <SketchPlugin_ConstraintDistance.h>
  31 #include <SketchPlugin_ConstraintEqual.h>
  32 #include <SketchPlugin_ConstraintLength.h>
  33 #include <SketchPlugin_ConstraintMiddle.h>
  34 #include <SketchPlugin_ConstraintMirror.h>
  35 #include <SketchPlugin_ConstraintRigid.h>
  36 #include <SketchPlugin_ConstraintTangent.h>
  37 #include <SketchPlugin_Line.h>
  38 #include <SketchPlugin_MultiRotation.h>
  39 #include <SketchPlugin_MultiTranslation.h>
  40
  41 #include <cmath>
  42
  43
  44 #define GCS_EDGE_WRAPPER(x)   std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(x)
  45 #define GCS_POINT_WRAPPER(x)  std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(x)
  46 #define GCS_SCALAR_WRAPPER(x) std::dynamic_pointer_cast<PlaneGCSSolver_ScalarWrapper>(x)
  47
  48
  49
  50 static ConstraintWrapperPtr
  51   createConstraintCoincidence(std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint1,
  52                               std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint2);
  53 static ConstraintWrapperPtr
  54   createConstraintPointOnEntity(const SketchSolver_ConstraintType& theType,
  55                                 std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint,
  56                                 std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity);
  57 static ConstraintWrapperPtr
  58   createConstraintDistancePointPoint(std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
  59                                      std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint1,
  60                                      std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint2);
  61 static ConstraintWrapperPtr
  62   createConstraintDistancePointLine(std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
  63                                     std::shared_ptr<PlaneGCSSolver_PointWrapper>  thePoint,
  64                                     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity);
  65 static ConstraintWrapperPtr
  66   createConstraintRadius(std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
  67                          std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity);
  68 static ConstraintWrapperPtr
  69   createConstraintAngle(ConstraintPtr theConstraint,
  70                         std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
  71                         std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
  72                         std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2);
  73 static ConstraintWrapperPtr
  74   createConstraintHorizVert(const SketchSolver_ConstraintType& theType,
  75                             std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity);
  76 static ConstraintWrapperPtr
  77   createConstraintParallel(std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
  78                            std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2);
  79 static ConstraintWrapperPtr
  80   createConstraintPerpendicular(std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
  81                                 std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2);
  82 static ConstraintWrapperPtr
  83   createConstraintEqual(const SketchSolver_ConstraintType& theType,
  84                         std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
  85                         std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2,
  86                         std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theIntermed);
  87 static ConstraintWrapperPtr
  88   createConstraintMiddlePoint(std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint,
  89                               std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity);
  90
  91
  92
  93
  94
  95 SolverConstraintPtr PlaneGCSSolver_Tools::createConstraint(ConstraintPtr theConstraint)
  96 {
  97   if (theConstraint->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
  98     return SolverConstraintPtr(new SketchSolver_ConstraintCoincidence(theConstraint));
  99   } else if (theConstraint->getKind() == SketchPlugin_ConstraintCollinear::ID()) {
 100     return SolverConstraintPtr(new SketchSolver_ConstraintCollinear(theConstraint));
 101   } else if (theConstraint->getKind() == SketchPlugin_ConstraintDistance::ID()) {
 102     return SolverConstraintPtr(new SketchSolver_ConstraintDistance(theConstraint));
 103   } else if (theConstraint->getKind() == SketchPlugin_ConstraintEqual::ID()) {
 104     return SolverConstraintPtr(new SketchSolver_ConstraintEqual(theConstraint));
 105   } else if (theConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
 106     return SolverConstraintPtr(new SketchSolver_ConstraintLength(theConstraint));
 107   } else if (theConstraint->getKind() == SketchPlugin_ConstraintMiddle::ID()) {
 108     return SolverConstraintPtr(new SketchSolver_ConstraintMiddle(theConstraint));
 109   } else if (theConstraint->getKind() == SketchPlugin_ConstraintMirror::ID()) {
 110     return SolverConstraintPtr(new SketchSolver_ConstraintMirror(theConstraint));
 111   } else if (theConstraint->getKind() == SketchPlugin_ConstraintTangent::ID()) {
 112     return SolverConstraintPtr(new SketchSolver_ConstraintTangent(theConstraint));
 113   } else if (theConstraint->getKind() == SketchPlugin_ConstraintRigid::ID()) {
 114     return SolverConstraintPtr(new SketchSolver_ConstraintFixed(theConstraint));
 115   } else if (theConstraint->getKind() == SketchPlugin_MultiTranslation::ID()) {
 116     return SolverConstraintPtr(new SketchSolver_ConstraintMultiTranslation(theConstraint));
 117   } else if (theConstraint->getKind() == SketchPlugin_MultiRotation::ID()) {
 118     return SolverConstraintPtr(new SketchSolver_ConstraintMultiRotation(theConstraint));
 119   } else if (theConstraint->getKind() == SketchPlugin_ConstraintAngle::ID()) {
 120     return SolverConstraintPtr(new SketchSolver_ConstraintAngle(theConstraint));
 121   }
 122   // All other types of constraints
 123   return SolverConstraintPtr(new SketchSolver_Constraint(theConstraint));
 124 }
 125
 126 std::shared_ptr<SketchSolver_ConstraintMovement> PlaneGCSSolver_Tools::createMovementConstraint(
 127     FeaturePtr theMovedFeature)
 128 {
 129   return std::shared_ptr<SketchSolver_ConstraintMovement>(
 130       new SketchSolver_ConstraintMovement(theMovedFeature));
 131 }
 132
 133 std::shared_ptr<SketchSolver_ConstraintMovement> PlaneGCSSolver_Tools::createMovementConstraint(
 134     AttributePtr theMovedAttribute)
 135 {
 136   return std::shared_ptr<SketchSolver_ConstraintMovement>(
 137       new SketchSolver_ConstraintMovement(theMovedAttribute));
 138 }
 139
 140
 141
 142 ConstraintWrapperPtr PlaneGCSSolver_Tools::createConstraint(
 143     ConstraintPtr theConstraint,
 144     const SketchSolver_ConstraintType& theType,
 145     const EntityWrapperPtr& theValue,
 146     const EntityWrapperPtr& thePoint1,
 147     const EntityWrapperPtr& thePoint2,
 148     const EntityWrapperPtr& theEntity1,
 149     const EntityWrapperPtr& theEntity2)
 150 {
 151   ConstraintWrapperPtr aResult;
 152   ScalarWrapperPtr anIntermediate;
 153
 154   std::shared_ptr<PlaneGCSSolver_PointWrapper> aPoint1 = GCS_POINT_WRAPPER(thePoint1);
 155   std::shared_ptr<PlaneGCSSolver_PointWrapper> aPoint2 = GCS_POINT_WRAPPER(thePoint2);
 156
 157   switch (theType) {
 158   case CONSTRAINT_PT_PT_COINCIDENT:
 159     aResult = createConstraintCoincidence(aPoint1, aPoint2);
 160     break;
 161   case CONSTRAINT_PT_ON_LINE:
 162   case CONSTRAINT_PT_ON_CIRCLE:
 163     aResult = createConstraintPointOnEntity(theType, aPoint1, GCS_EDGE_WRAPPER(theEntity1));
 164     break;
 165   case CONSTRAINT_MIDDLE_POINT:
 166     aResult = createConstraintMiddlePoint(aPoint1, GCS_EDGE_WRAPPER(theEntity1));
 167     break;
 168   case CONSTRAINT_PT_PT_DISTANCE:
 169     aResult = createConstraintDistancePointPoint(GCS_SCALAR_WRAPPER(theValue), aPoint1, aPoint2);
 170     break;
 171   case CONSTRAINT_PT_LINE_DISTANCE:
 172     aResult = createConstraintDistancePointLine(GCS_SCALAR_WRAPPER(theValue),
 173                                                 aPoint1,
 174                                                 GCS_EDGE_WRAPPER(theEntity1));
 175     break;
 176   case CONSTRAINT_RADIUS:
 177     aResult = createConstraintRadius(GCS_SCALAR_WRAPPER(theValue),
 178                                      GCS_EDGE_WRAPPER(theEntity1));
 179     break;
 180   case CONSTRAINT_ANGLE:
 181     aResult = createConstraintAngle(theConstraint,
 182                   GCS_SCALAR_WRAPPER(theValue),
 183                   GCS_EDGE_WRAPPER(theEntity1), GCS_EDGE_WRAPPER(theEntity2));
 184     break;
 185   case CONSTRAINT_FIXED:
 186     break;
 187   case CONSTRAINT_HORIZONTAL:
 188   case CONSTRAINT_VERTICAL:
 189     aResult = createConstraintHorizVert(theType, GCS_EDGE_WRAPPER(theEntity1));
 190     break;
 191   case CONSTRAINT_PARALLEL:
 192     aResult = createConstraintParallel(GCS_EDGE_WRAPPER(theEntity1),
 193                                        GCS_EDGE_WRAPPER(theEntity2));
 194     break;
 195   case CONSTRAINT_PERPENDICULAR:
 196     aResult = createConstraintPerpendicular(GCS_EDGE_WRAPPER(theEntity1),
 197                                             GCS_EDGE_WRAPPER(theEntity2));
 198     break;
 199   case CONSTRAINT_EQUAL_LINES:
 200     anIntermediate = GCS_SCALAR_WRAPPER(theValue); // parameter is used to store length of lines
 201   case CONSTRAINT_EQUAL_LINE_ARC:
 202   case CONSTRAINT_EQUAL_RADIUS:
 203     aResult = createConstraintEqual(theType,
 204                                     GCS_EDGE_WRAPPER(theEntity1),
 205                                     GCS_EDGE_WRAPPER(theEntity2),
 206                                     anIntermediate);
 207     break;
 208   default:
 209     break;
 210   }
 211
 212   return aResult;
 213 }
 214
 215 std::shared_ptr<GeomAPI_Pnt2d> PlaneGCSSolver_Tools::point(EntityWrapperPtr theEntity)
 216 {
 217   if (theEntity->type() != ENTITY_POINT)
 218     return std::shared_ptr<GeomAPI_Pnt2d>();
 219
 220   std::shared_ptr<PlaneGCSSolver_PointWrapper> aPointWrapper =
 221       std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(theEntity);
 222   const GCSPointPtr& aPoint = aPointWrapper->point();
 223   return std::shared_ptr<GeomAPI_Pnt2d>(new GeomAPI_Pnt2d(*aPoint->x, *aPoint->y));
 224 }
 225
 226 std::shared_ptr<GeomAPI_Lin2d> PlaneGCSSolver_Tools::line(EntityWrapperPtr theEntity)
 227 {
 228   if (theEntity->type() != ENTITY_LINE)
 229     return std::shared_ptr<GeomAPI_Lin2d>();
 230
 231   std::shared_ptr<PlaneGCSSolver_EdgeWrapper> anEntity =
 232       std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(theEntity);
 233   std::shared_ptr<GCS::Line> aLine = std::dynamic_pointer_cast<GCS::Line>(anEntity->entity());
 234   return std::shared_ptr<GeomAPI_Lin2d>(
 235       new GeomAPI_Lin2d(*(aLine->p1.x), *(aLine->p1.y), *(aLine->p2.x), *(aLine->p2.y)));
 236 }
 237
 238 std::shared_ptr<GeomAPI_Lin2d> PlaneGCSSolver_Tools::line(FeaturePtr theFeature)
 239 {
 240   if (theFeature->getKind() != SketchPlugin_Line::ID())
 241     return std::shared_ptr<GeomAPI_Lin2d>();
 242
 243   AttributePoint2DPtr aStart = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 244       theFeature->attribute(SketchPlugin_Line::START_ID()));
 245   AttributePoint2DPtr aEnd = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 246       theFeature->attribute(SketchPlugin_Line::END_ID()));
 247
 248   return std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aStart->pnt(), aEnd->pnt()));
 249 }
 250
 251
 252
 253
 254
 255 // ================   Auxiliary functions   ==========================
 256 ConstraintWrapperPtr createConstraintCoincidence(
 257     std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint1,
 258     std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint2)
 259 {
 260   GCSPointPtr aPoint1 = thePoint1->point();
 261   GCSPointPtr aPoint2 = thePoint2->point();
 262
 263   // Create equality constraint for corresponding attributes of the points
 264   std::list<GCSConstraintPtr> aConstrList;
 265   aConstrList.push_back(
 266       GCSConstraintPtr(new GCS::ConstraintEqual(aPoint1->x, aPoint2->x)));
 267   aConstrList.push_back(
 268       GCSConstraintPtr(new GCS::ConstraintEqual(aPoint1->y, aPoint2->y)));
 269
 270   return ConstraintWrapperPtr(new PlaneGCSSolver_ConstraintWrapper(
 271       aConstrList, CONSTRAINT_PT_PT_COINCIDENT));
 272 }
 273
 274 ConstraintWrapperPtr createConstraintPointOnEntity(
 275     const SketchSolver_ConstraintType& theType,
 276     std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint,
 277     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity)
 278 {
 279   GCSConstraintPtr aNewConstr;
 280
 281   switch (theEntity->type()) {
 282   case ENTITY_LINE: {
 283     std::shared_ptr<GCS::Line> aLine = std::dynamic_pointer_cast<GCS::Line>(theEntity->entity());
 284     aNewConstr = GCSConstraintPtr(new GCS::ConstraintPointOnLine(*(thePoint->point()), *aLine));
 285     break;
 286     }
 287   case ENTITY_ARC:
 288   case ENTITY_CIRCLE: {
 289     std::shared_ptr<GCS::Circle> aCirc =
 290       std::dynamic_pointer_cast<GCS::Circle>(theEntity->entity());
 291     aNewConstr = GCSConstraintPtr(
 292         new GCS::ConstraintP2PDistance(*(thePoint->point()), aCirc->center, aCirc->rad));
 293     break;
 294     }
 295   default:
 296     return ConstraintWrapperPtr();
 297   }
 298
 299   return ConstraintWrapperPtr(new PlaneGCSSolver_ConstraintWrapper(aNewConstr, theType));
 300 }
 301
 302 ConstraintWrapperPtr createConstraintMiddlePoint(
 303     std::shared_ptr<PlaneGCSSolver_PointWrapper> thePoint,
 304     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity)
 305 {
 306   GCSPointPtr aPoint = thePoint->point();
 307   std::shared_ptr<GCS::Line> aLine = std::dynamic_pointer_cast<GCS::Line>(theEntity->entity());
 308   if (!aLine)
 309     return ConstraintWrapperPtr();
 310
 311   std::list<GCSConstraintPtr> aConstrList;
 312   aConstrList.push_back(
 313       GCSConstraintPtr(new GCS::ConstraintPointOnPerpBisector(*aPoint, aLine->p1, aLine->p2)));
 314   aConstrList.push_back(GCSConstraintPtr(new GCS::ConstraintPointOnLine(*aPoint, *aLine)));
 315
 316   return ConstraintWrapperPtr(
 317       new PlaneGCSSolver_ConstraintWrapper(aConstrList, CONSTRAINT_MIDDLE_POINT));
 318 }
 319
 320
 321 ConstraintWrapperPtr createConstraintDistancePointPoint(
 322     std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
 323     std::shared_ptr<PlaneGCSSolver_PointWrapper>  thePoint1,
 324     std::shared_ptr<PlaneGCSSolver_PointWrapper>  thePoint2)
 325 {
 326   GCSConstraintPtr aNewConstr(new GCS::ConstraintP2PDistance(
 327       *(thePoint1->point()), *(thePoint2->point()), theValue->scalar()));
 328   std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aResult(
 329       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_PT_PT_DISTANCE));
 330   aResult->setValueParameter(theValue);
 331   return aResult;
 332 }
 333
 334 ConstraintWrapperPtr createConstraintDistancePointLine(
 335     std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
 336     std::shared_ptr<PlaneGCSSolver_PointWrapper>  thePoint,
 337     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity)
 338 {
 339   std::shared_ptr<GCS::Line> aLine = std::dynamic_pointer_cast<GCS::Line>(theEntity->entity());
 340   GCSConstraintPtr aNewConstr(new GCS::ConstraintP2LDistance(
 341       *(thePoint->point()), *(aLine), theValue->scalar()));
 342   std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aResult(
 343       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_PT_LINE_DISTANCE));
 344   aResult->setValueParameter(theValue);
 345   return aResult;
 346 }
 347
 348 ConstraintWrapperPtr createConstraintRadius(
 349     std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
 350     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity)
 351 {
 352   std::shared_ptr<GCS::Circle> aCircle =
 353     std::dynamic_pointer_cast<GCS::Circle>(theEntity->entity());
 354   GCSConstraintPtr aNewConstr(new GCS::ConstraintEqual(aCircle->rad, theValue->scalar()));
 355   std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aResult(
 356       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_RADIUS));
 357   aResult->setValueParameter(theValue);
 358   return aResult;
 359 }
 360
 361 ConstraintWrapperPtr createConstraintAngle(
 362     ConstraintPtr theConstraint,
 363     std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theValue,
 364     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
 365     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2)
 366 {
 367   std::shared_ptr<GCS::Line> aLine1 = std::dynamic_pointer_cast<GCS::Line>(theEntity1->entity());
 368   bool isLine1Rev = theConstraint->boolean(
 369       SketchPlugin_ConstraintAngle::ANGLE_REVERSED_FIRST_LINE_ID())->value();
 370   GCS::Point aLine1Pt1 = isLine1Rev ? aLine1->p2 : aLine1->p1;
 371   GCS::Point aLine1Pt2 = isLine1Rev ? aLine1->p1 : aLine1->p2;
 372
 373   std::shared_ptr<GCS::Line> aLine2 = std::dynamic_pointer_cast<GCS::Line>(theEntity2->entity());
 374   bool isLine2Rev = theConstraint->boolean(
 375       SketchPlugin_ConstraintAngle::ANGLE_REVERSED_SECOND_LINE_ID())->value();
 376   GCS::Point aLine2Pt1 = isLine2Rev ? aLine2->p2 : aLine2->p1;
 377   GCS::Point aLine2Pt2 = isLine2Rev ? aLine2->p1 : aLine2->p2;
 378
 379   GCSConstraintPtr aNewConstr(new GCS::ConstraintL2LAngle(
 380       aLine1Pt1, aLine1Pt2, aLine2Pt1, aLine2Pt2, theValue->scalar()));
 381
 382   std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aResult(
 383       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_ANGLE));
 384   aResult->setValueParameter(theValue);
 385   return aResult;
 386 }
 387
 388 ConstraintWrapperPtr createConstraintHorizVert(
 389     const SketchSolver_ConstraintType& theType,
 390     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity)
 391 {
 392   std::shared_ptr<GCS::Line> aLine = std::dynamic_pointer_cast<GCS::Line>(theEntity->entity());
 393   GCSConstraintPtr aNewConstr;
 394   if (theType == CONSTRAINT_HORIZONTAL)
 395     aNewConstr = GCSConstraintPtr(new GCS::ConstraintEqual(aLine->p1.y, aLine->p2.y));
 396   else
 397     aNewConstr = GCSConstraintPtr(new GCS::ConstraintEqual(aLine->p1.x, aLine->p2.x));
 398
 399   return ConstraintWrapperPtr(new PlaneGCSSolver_ConstraintWrapper(aNewConstr, theType));
 400 }
 401
 402 ConstraintWrapperPtr createConstraintParallel(
 403     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
 404     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2)
 405 {
 406   std::shared_ptr<GCS::Line> aLine1 = std::dynamic_pointer_cast<GCS::Line>(theEntity1->entity());
 407   std::shared_ptr<GCS::Line> aLine2 = std::dynamic_pointer_cast<GCS::Line>(theEntity2->entity());
 408   GCSConstraintPtr aNewConstr(new GCS::ConstraintParallel(*(aLine1), *(aLine2)));
 409
 410   return ConstraintWrapperPtr(
 411       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_PARALLEL));
 412 }
 413
 414 ConstraintWrapperPtr createConstraintPerpendicular(
 415     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
 416     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2)
 417 {
 418   std::shared_ptr<GCS::Line> aLine1 = std::dynamic_pointer_cast<GCS::Line>(theEntity1->entity());
 419   std::shared_ptr<GCS::Line> aLine2 = std::dynamic_pointer_cast<GCS::Line>(theEntity2->entity());
 420   GCSConstraintPtr aNewConstr(new GCS::ConstraintPerpendicular(*(aLine1), *(aLine2)));
 421
 422   return ConstraintWrapperPtr(
 423       new PlaneGCSSolver_ConstraintWrapper(aNewConstr, CONSTRAINT_PERPENDICULAR));
 424 }
 425
 426 ConstraintWrapperPtr createConstraintEqual(
 427     const SketchSolver_ConstraintType& theType,
 428     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity1,
 429     std::shared_ptr<PlaneGCSSolver_EdgeWrapper> theEntity2,
 430     std::shared_ptr<PlaneGCSSolver_ScalarWrapper> theIntermed)
 431 {
 432   if (theType == CONSTRAINT_EQUAL_LINE_ARC)
 433     return ConstraintWrapperPtr(); // line-arc equivalence is not supported yet
 434
 435   std::list<GCSConstraintPtr> aConstrList;
 436   if (theType == CONSTRAINT_EQUAL_LINES) {
 437     std::shared_ptr<GCS::Line> aLine1 = std::dynamic_pointer_cast<GCS::Line>(theEntity1->entity());
 438     std::shared_ptr<GCS::Line> aLine2 = std::dynamic_pointer_cast<GCS::Line>(theEntity2->entity());
 439
 440     aConstrList.push_back(GCSConstraintPtr(
 441         new GCS::ConstraintP2PDistance(aLine1->p1, aLine1->p2, theIntermed->scalar())));
 442     aConstrList.push_back(GCSConstraintPtr(
 443         new GCS::ConstraintP2PDistance(aLine2->p1, aLine2->p2, theIntermed->scalar())));
 444     // update value of intermediate parameter
 445     double x = *aLine1->p1.x - *aLine1->p2.x;
 446     double y = *aLine1->p1.y - *aLine1->p2.y;
 447     double aLen = sqrt(x*x + y*y);
 448     theIntermed->setValue(aLen);
 449   } else {
 450     std::shared_ptr<GCS::Circle> aCirc1 =
 451         std::dynamic_pointer_cast<GCS::Circle>(theEntity1->entity());
 452     std::shared_ptr<GCS::Circle> aCirc2 =
 453         std::dynamic_pointer_cast<GCS::Circle>(theEntity2->entity());
 454
 455     aConstrList.push_back(GCSConstraintPtr(new GCS::ConstraintEqual(aCirc1->rad, aCirc2->rad)));
 456   }
 457
 458   std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aResult(
 459       new PlaneGCSSolver_ConstraintWrapper(aConstrList, theType));
 460   if (theIntermed)
 461     aResult->setValueParameter(theIntermed);
 462   return aResult;
 463 }