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