src/SketchPlugin/SketchPlugin_OverConstraintsResolver.cpp

   1 // Copyright (C) 2014-2022  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_OverConstraintsResolver.h>
  21
  22 #include <Events_Loop.h>
  23
  24 #include <ModelAPI_Attribute.h>
  25 #include <ModelAPI_AttributeRefAttr.h>
  26 #include <ModelAPI_Feature.h>
  27 #include <ModelAPI_Events.h>
  28 #include <ModelAPI_Tools.h>
  29
  30 #include <SketchPlugin_Arc.h>
  31 #include <SketchPlugin_ConstraintCoincidence.h>
  32 #include <SketchPlugin_ConstraintTangent.h>
  33 #include <SketchPlugin_ConstraintHorizontal.h>
  34 #include <SketchPlugin_ConstraintVertical.h>
  35 #include <SketchPlugin_Point.h>
  36
  37 static SketchPlugin_OverConstraintsResolver* myConstResolver =
  38                                                    new SketchPlugin_OverConstraintsResolver;
  39
  40 SketchPlugin_OverConstraintsResolver::SketchPlugin_OverConstraintsResolver()
  41 {
  42   Events_Loop::loop()->registerListener(this, Events_Loop::eventByName(EVENT_CHECK_CONSTRAINTS));
  43 }
  44
  45 void SketchPlugin_OverConstraintsResolver::setConstraints(
  46                                            const std::set<ObjectPtr>& theConstraints)
  47 {
  48   myConstraints = theConstraints;
  49 }
  50
  51 bool SketchPlugin_OverConstraintsResolver::perform()
  52 {
  53   bool hasConflicts = false;
  54   hasConflicts |= checkArcsAboutTangentialConflict();
  55   hasConflicts |= checkHorizontalOrVerticalConflict();
  56   return hasConflicts;
  57 }
  58
  59 bool SketchPlugin_OverConstraintsResolver::checkHorizontalOrVerticalConflict()
  60 {
  61   std::set<ObjectPtr>::const_iterator
  62     anIt = myConstraints.begin(), aLast = myConstraints.end();
  63   bool isHVConstraint = false;
  64   FeaturePtr aFeature;
  65   for (; anIt != aLast; anIt++) {
  66     ObjectPtr anObject = *anIt;
  67     if (!isHVConstraint) {
  68       aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(anObject);
  69       if (aFeature) {
  70         std::string aType = aFeature->getKind();
  71         if ((aType == SketchPlugin_ConstraintHorizontal::ID()) ||
  72             (aType == SketchPlugin_ConstraintVertical::ID()))
  73         {
  74           myConstraintsToRemove.insert(*anIt);
  75           isHVConstraint = true;
  76         }
  77       }
  78     }
  79   }
  80   return isHVConstraint;
  81 }
  82
  83 bool SketchPlugin_OverConstraintsResolver::checkArcsAboutTangentialConflict()
  84 {
  85   bool isConflictsFound = false;
  86
  87   std::set<ObjectPtr>::const_iterator
  88     anIt = myConstraints.begin(), aLast = myConstraints.end();
  89   for (; anIt != aLast; anIt++) {
  90     ObjectPtr anObject = *anIt;
  91     ConstraintPtr aConstain =
  92       std::dynamic_pointer_cast<SketchPlugin_Constraint>(anObject);
  93     if (aConstain.get()) {
  94       std::shared_ptr<ModelAPI_AttributeRefAttr> aRefAttrA = aConstain->refattr(
  95                                                              aConstain->ENTITY_A());
  96       std::shared_ptr<ModelAPI_AttributeRefAttr> aRefAttrB = aConstain->refattr(
  97                                                              aConstain->ENTITY_B());
  98       if (!aRefAttrA || !aRefAttrB)
  99         continue;
 100
 101       FeaturePtr aFeatureA = ModelAPI_Feature::feature(aRefAttrA->object());
 102       FeaturePtr aFeatureB = ModelAPI_Feature::feature(aRefAttrB->object());
 103
 104       if (aFeatureA && aFeatureA->getKind() == SketchPlugin_Arc::ID() &&
 105           aFeatureB && aFeatureB->getKind() == SketchPlugin_Arc::ID()) {
 106
 107         std::shared_ptr<ModelAPI_Attribute> anAttrStrA = aFeatureA->attribute(
 108                                                          SketchPlugin_Arc::START_ID());
 109         std::shared_ptr<ModelAPI_Attribute> anAttrEndA = aFeatureA->attribute(
 110                                                          SketchPlugin_Arc::END_ID());
 111         std::shared_ptr<ModelAPI_Attribute> anAttrStrB = aFeatureB->attribute(
 112                                                          SketchPlugin_Arc::START_ID());
 113         std::shared_ptr<ModelAPI_Attribute> anAttrEndB = aFeatureB->attribute(
 114                                                          SketchPlugin_Arc::END_ID());
 115         std::shared_ptr<ModelAPI_Attribute> anAttrCenA = aFeatureA->attribute(
 116                                                          SketchPlugin_Arc::CENTER_ID());
 117         std::shared_ptr<ModelAPI_Attribute> anAttrCenB = aFeatureB->attribute(
 118                                                          SketchPlugin_Arc::CENTER_ID());
 119
 120         bool isCoincident = false;
 121         bool isCoincidentAtCenter = false;
 122         std::set<FeaturePtr> aTangentConstraints;
 123
 124         std::set<FeaturePtr> aFeatures;
 125         std::map<FeaturePtr, std::set<FeaturePtr> > aFeaturesMap;
 126         aFeatures.insert(aFeatureA);
 127         aFeatures.insert(aFeatureB);
 128         ModelAPI_Tools::findAllReferences(aFeatures, aFeaturesMap);
 129
 130         std::set<FeaturePtr> aFeaturesA = aFeaturesMap[aFeatureA];
 131         std::set<FeaturePtr> aFeaturesB = aFeaturesMap[aFeatureB];
 132
 133         for (auto aFeatIter = aFeaturesA.begin(); aFeatIter != aFeaturesA.end(); ++aFeatIter) {
 134           if (aFeaturesB.find(aFeatIter.operator*()) != aFeaturesB.end()){
 135             const std::string& aType = (*aFeatIter)->getKind();
 136             if (aType == SketchPlugin_ConstraintCoincidence::ID()) {
 137               ConstraintPtr aCoincidence =
 138                   std::dynamic_pointer_cast<SketchPlugin_ConstraintCoincidence>(*aFeatIter);
 139               std::set<AttributePtr> anAttrSet;
 140               anAttrSet.insert(aCoincidence->refattr(aCoincidence->ENTITY_A())->attr());
 141               anAttrSet.insert(aCoincidence->refattr(aCoincidence->ENTITY_B())->attr());
 142               isCoincident |= ((anAttrSet.find(anAttrStrA) != anAttrSet.end() ||
 143                                 anAttrSet.find(anAttrEndA) != anAttrSet.end()) &&
 144                                (anAttrSet.find(anAttrStrB) != anAttrSet.end() ||
 145                                 anAttrSet.find(anAttrEndB) != anAttrSet.end()));
 146               isCoincidentAtCenter |= (anAttrSet.find(anAttrCenA) != anAttrSet.end() &&
 147                                        anAttrSet.find(anAttrCenB) != anAttrSet.end());
 148             }
 149             else if (aType == SketchPlugin_ConstraintTangent::ID()) {
 150               aTangentConstraints.insert(*aFeatIter);
 151             }
 152           }
 153         }
 154
 155         if (isCoincident && isCoincidentAtCenter && !aTangentConstraints.empty()) {
 156           isConflictsFound = true;
 157           myConstraintsToRemove.insert(aTangentConstraints.begin(), aTangentConstraints.end());
 158         }
 159       }
 160     }
 161   }
 162
 163   return isConflictsFound;
 164 }
 165
 166 void SketchPlugin_OverConstraintsResolver::processEvent(
 167                                            const std::shared_ptr<Events_Message>& theMessage)
 168 {
 169   Events_ID anEventID = theMessage->eventID();
 170   if (anEventID == Events_Loop::eventByName(EVENT_CHECK_CONSTRAINTS)) {
 171     std::shared_ptr<ModelAPI_CheckConstraintsMessage> aConstraintsMsg =
 172       std::dynamic_pointer_cast<ModelAPI_CheckConstraintsMessage>(theMessage);
 173     if (aConstraintsMsg.get()) {
 174       myConstraintsToRemove.clear();
 175       myConstraints = aConstraintsMsg->constraints();
 176       if (perform())
 177       {
 178         std::shared_ptr<ModelAPI_CheckConstraintsMessage> aMessage =
 179           std::shared_ptr<ModelAPI_CheckConstraintsMessage>(
 180             new ModelAPI_CheckConstraintsMessage(
 181               Events_Loop::eventByName(EVENT_REMOVE_CONSTRAINTS)));
 182         aMessage->setConstraints(myConstraintsToRemove);
 183         Events_Loop::loop()->send(aMessage);
 184       }
 185     }
 186   }
 187 }