src/SketchSolver/SketchSolver_ConstraintMiddle.cpp

   1 // Copyright (C) 2014-2017  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
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 #include <SketchSolver_ConstraintMiddle.h>
  22 #include <PlaneGCSSolver_ConstraintWrapper.h>
  23 #include <PlaneGCSSolver_UpdateCoincidence.h>
  24
  25 void SketchSolver_ConstraintMiddle::getAttributes(
  26     EntityWrapperPtr& theValue,
  27     std::vector<EntityWrapperPtr>& theAttributes)
  28 {
  29   SketchSolver_Constraint::getAttributes(theValue, theAttributes);
  30 }
  31
  32 void SketchSolver_ConstraintMiddle::notify(const FeaturePtr&      theFeature,
  33                                            PlaneGCSSolver_Update* theUpdater)
  34 {
  35   if (theFeature == myBaseConstraint && myInSolver)
  36     return; // the constraint is already being updated
  37
  38   PlaneGCSSolver_UpdateCoincidence* anUpdater =
  39       static_cast<PlaneGCSSolver_UpdateCoincidence*>(theUpdater);
  40   bool isAccepted = anUpdater->addCoincidence(myAttributes.front(), myAttributes.back());
  41   if (isAccepted) {
  42     if (!myInSolver) {
  43       myInSolver = true;
  44
  45       if (myMiddle) {
  46         // remove previously adde constraint
  47         myStorage->removeConstraint(myBaseConstraint);
  48         // merge divided constraints into single object
  49         std::list<GCSConstraintPtr> aGCSConstraints;
  50         std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aConstraint =
  51             std::dynamic_pointer_cast<PlaneGCSSolver_ConstraintWrapper>(myMiddle);
  52         aGCSConstraints.push_back(aConstraint->constraints().front());
  53         aConstraint =
  54             std::dynamic_pointer_cast<PlaneGCSSolver_ConstraintWrapper>(mySolverConstraint);
  55         aGCSConstraints.push_back(aConstraint->constraints().front());
  56
  57         myMiddle = ConstraintWrapperPtr();
  58         mySolverConstraint = ConstraintWrapperPtr(
  59             new PlaneGCSSolver_ConstraintWrapper(aGCSConstraints, CONSTRAINT_MIDDLE_POINT));
  60       }
  61
  62       myStorage->addConstraint(myBaseConstraint, mySolverConstraint);
  63     }
  64   } else {
  65     if (myInSolver) {
  66       myStorage->removeConstraint(myBaseConstraint);
  67       myInSolver = false;
  68     }
  69
  70     if (!myMiddle) {
  71       // divide solver constraints to the middle point and point-line coincidence
  72       std::shared_ptr<PlaneGCSSolver_ConstraintWrapper> aConstraint =
  73           std::dynamic_pointer_cast<PlaneGCSSolver_ConstraintWrapper>(mySolverConstraint);
  74       std::list<GCSConstraintPtr> aGCSConstraints = aConstraint->constraints();
  75
  76       myMiddle = ConstraintWrapperPtr(
  77           new PlaneGCSSolver_ConstraintWrapper(aGCSConstraints.front(), CONSTRAINT_MIDDLE_POINT));
  78       mySolverConstraint = ConstraintWrapperPtr(
  79           new PlaneGCSSolver_ConstraintWrapper(aGCSConstraints.back(), CONSTRAINT_MIDDLE_POINT));
  80
  81       // send middle constraint only
  82       myStorage->addConstraint(myBaseConstraint, myMiddle);
  83     }
  84   }
  85 }