src/SketchPlugin/SketchPlugin_ConstraintFillet.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_ConstraintFillet.cpp
   4 // Created: 19 Mar 2015
   5 // Author:  Artem ZHIDKOV
   6
   7 #include "SketchPlugin_ConstraintFillet.h"
   8
   9 #include <GeomAPI_Dir2d.h>
  10 #include <GeomAPI_Pnt2d.h>
  11 #include <GeomAPI_XY.h>
  12 #include <GeomDataAPI_Point2D.h>
  13 #include <ModelAPI_AttributeDouble.h>
  14 #include <ModelAPI_AttributeRefAttr.h>
  15 #include <ModelAPI_AttributeRefList.h>
  16 #include <ModelAPI_Data.h>
  17 #include <ModelAPI_Events.h>
  18 #include <ModelAPI_ResultConstruction.h>
  19 #include <ModelAPI_Session.h>
  20
  21 #include <SketchPlugin_Arc.h>
  22 #include <SketchPlugin_Line.h>
  23 #include <SketchPlugin_Sketch.h>
  24 #include <SketchPlugin_ConstraintCoincidence.h>
  25 #include <SketchPlugin_ConstraintTangent.h>
  26 #include <SketchPlugin_ConstraintRadius.h>
  27
  28 #include <SketcherPrs_Factory.h>
  29
  30 #include <Config_PropManager.h>
  31 #include <Events_Loop.h>
  32
  33 static const std::string PREVIOUS_VALUE("FilletPreviousRadius");
  34
  35 /// \brief Attract specified point on theNewArc to the attribute of theFeature
  36 static void recalculateAttributes(FeaturePtr theNewArc, const std::string& theNewArcAttribute,
  37   FeaturePtr theFeature, const std::string& theFeatureAttribute);
  38
  39
  40 SketchPlugin_ConstraintFillet::SketchPlugin_ConstraintFillet()
  41 {
  42 }
  43
  44 void SketchPlugin_ConstraintFillet::initAttributes()
  45 {
  46   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::typeId());
  47   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::typeId());
  48   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::typeId());
  49   data()->addAttribute(SketchPlugin_Constraint::ENTITY_C(), ModelAPI_AttributeRefList::typeId());
  50   data()->addAttribute(PREVIOUS_VALUE, ModelAPI_AttributeDouble::typeId());
  51   // initialize attribute not applicable for user
  52   data()->attribute(SketchPlugin_Constraint::ENTITY_C())->setInitialized();
  53   data()->attribute(PREVIOUS_VALUE)->setInitialized();
  54   std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(data()->attribute(PREVIOUS_VALUE))->setValue(0.0);
  55 }
  56
  57 void SketchPlugin_ConstraintFillet::execute()
  58 {
  59   std::shared_ptr<ModelAPI_Data> aData = data();
  60   ResultConstructionPtr aRC;
  61   // Check the base objects are initialized
  62   double aFilletRadius = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  63       aData->attribute(SketchPlugin_Constraint::VALUE()))->value();
  64   AttributeRefAttrPtr aBaseA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
  65       aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
  66   AttributeRefAttrPtr aBaseB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
  67       aData->attribute(SketchPlugin_Constraint::ENTITY_B()));
  68   if (!aBaseA->isInitialized() || !aBaseB->isInitialized() ||
  69       !aBaseA->isObject() || !aBaseB->isObject())
  70     return;
  71   // Check the fillet shapes is not initialized yet
  72   AttributeRefListPtr aRefListOfFillet = std::dynamic_pointer_cast<ModelAPI_AttributeRefList>(
  73       aData->attribute(SketchPlugin_Constraint::ENTITY_C()));
  74   if (aRefListOfFillet->size() > 0) {
  75     // update the Radius constraint
  76     ObjectPtr aFilletArcObj = aRefListOfFillet->list().back();
  77     aRC = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(aFilletArcObj);
  78     FeaturePtr aFilletArcFeature = aRC ? aRC->document()->feature(aRC) :
  79       std::dynamic_pointer_cast<ModelAPI_Feature>(aFilletArcObj);
  80
  81     int aNbSubs = sketch()->numberOfSubs();
  82     FeaturePtr aSubFeature;
  83     for (int aSub = 0; aSub < aNbSubs; aSub++) {
  84       aSubFeature = sketch()->subFeature(aSub);
  85       if (aSubFeature->getKind() != SketchPlugin_ConstraintRadius::ID())
  86         continue;
  87       AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
  88           aSubFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
  89       if (!aRefAttr || !aRefAttr->isObject())
  90         continue;
  91       aRC = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(aRefAttr->object());
  92       FeaturePtr aFeature = aRC ? aRC->document()->feature(aRC) :
  93         std::dynamic_pointer_cast<ModelAPI_Feature>(aRefAttr->object());
  94       if (aFeature == aFilletArcFeature) {
  95         // Update radius constraint only if the value is changed in fillet's attribute
  96         double aPrevRadius = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  97             aData->attribute(PREVIOUS_VALUE))->value();
  98         if (aFilletRadius != aPrevRadius) {
  99           AttributeDoublePtr aRadius = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
 100               aSubFeature->attribute(SketchPlugin_Constraint::VALUE()));
 101           aRadius->setValue(aFilletRadius);
 102           std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
 103               aData->attribute(PREVIOUS_VALUE))->setValue(aFilletRadius);
 104         }
 105         break;
 106       }
 107     }
 108     return;
 109   }
 110   // Obtain features for the base objects
 111   FeaturePtr aFeatureA, aFeatureB;
 112   aRC = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(aBaseA->object());
 113   if (aRC) aFeatureA = aRC->document()->feature(aRC);
 114   aRC = std::dynamic_pointer_cast<ModelAPI_ResultConstruction>(aBaseB->object());
 115   if (aRC) aFeatureB = aRC->document()->feature(aRC);
 116   if (!aFeatureA || !aFeatureB)
 117     return;
 118
 119   // Create list of objects composing a fillet
 120   // copy aFeatureA
 121   FeaturePtr aNewFeatureA = sketch()->addFeature(aFeatureA->getKind());
 122   aFeatureA->data()->copyTo(aNewFeatureA->data());
 123   aNewFeatureA->execute();
 124   aRefListOfFillet->append(aNewFeatureA->firstResult());
 125   // copy aFeatureB
 126   FeaturePtr aNewFeatureB = sketch()->addFeature(aFeatureB->getKind());
 127   aFeatureB->data()->copyTo(aNewFeatureB->data());
 128   aNewFeatureB->execute();
 129   aRefListOfFillet->append(aNewFeatureB->firstResult());
 130   // create filleting arc (it will be attached to the list later)
 131   FeaturePtr aNewArc = sketch()->addFeature(SketchPlugin_Arc::ID());
 132
 133   // Wait all constraints being created, then send update events
 134   static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
 135   bool isUpdateFlushed = Events_Loop::loop()->isFlushed(anUpdateEvent);
 136   if (isUpdateFlushed)
 137     Events_Loop::loop()->setFlushed(anUpdateEvent, false);
 138
 139   // Calculate arc attributes
 140   static const int aNbFeatures = 2;
 141   FeaturePtr aFeature[aNbFeatures] = {aNewFeatureA, aNewFeatureB};
 142   std::shared_ptr<GeomAPI_Dir2d> aTangentDir[aNbFeatures]; // tangent directions of the features in coincident point
 143   bool isStart[aNbFeatures]; // indicates which point the features share
 144   std::shared_ptr<GeomAPI_Pnt2d> aStartEndPnt[aNbFeatures * 2]; // first pair of points relate to first feature, second pair -  to second
 145   std::string aFeatAttributes[aNbFeatures * 2]; // attributes of features
 146   for (int i = 0; i < aNbFeatures; i++) {
 147     std::string aStartAttr, aEndAttr;
 148     if (aFeature[i]->getKind() == SketchPlugin_Line::ID()) {
 149       aStartAttr = SketchPlugin_Line::START_ID();
 150       aEndAttr = SketchPlugin_Line::END_ID();
 151     } else if (aFeature[i]->getKind() == SketchPlugin_Arc::ID()) {
 152       aStartAttr = SketchPlugin_Arc::START_ID();
 153       aEndAttr = SketchPlugin_Arc::END_ID();
 154     } else { // wrong argument
 155       aRefListOfFillet->remove(aNewFeatureA);
 156       aRefListOfFillet->remove(aNewFeatureB);
 157       aRefListOfFillet->remove(aNewArc);
 158       return;
 159     }
 160     aFeatAttributes[2*i] = aStartAttr;
 161     aStartEndPnt[2*i] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 162         aFeature[i]->attribute(aStartAttr))->pnt();
 163     aFeatAttributes[2*i+1] = aEndAttr;
 164     aStartEndPnt[2*i+1] = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 165         aFeature[i]->attribute(aEndAttr))->pnt();
 166   }
 167   for (int i = 0; i < aNbFeatures; i++) {
 168     int j = aNbFeatures;
 169     for (; j < 2 * aNbFeatures; j++)
 170       if (aStartEndPnt[i]->distance(aStartEndPnt[j]) < 1.e-10) {
 171         isStart[0] = i==0;
 172         isStart[1] = j==aNbFeatures;
 173         break;
 174       }
 175     if (j < 2 * aNbFeatures)
 176       break;
 177   }
 178   // tangent directions of the features
 179   for (int i = 0; i < aNbFeatures; i++) {
 180     std::shared_ptr<GeomAPI_XY> aDir;
 181     if (aFeature[i]->getKind() == SketchPlugin_Line::ID()) {
 182       aDir = aStartEndPnt[2*i+1]->xy()->decreased(aStartEndPnt[2*i]->xy());
 183       if (!isStart[i])
 184         aDir = aDir->multiplied(-1.0);
 185     } else if (aFeature[i]->getKind() == SketchPlugin_Arc::ID()) {
 186       std::shared_ptr<GeomAPI_Pnt2d> aCenterPoint =
 187           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 188           aFeature[i]->attribute(SketchPlugin_Arc::CENTER_ID()))->pnt();
 189       aDir = isStart[i] ? aStartEndPnt[2*i]->xy() : aStartEndPnt[2*i+1]->xy();
 190       aDir = aDir->decreased(aCenterPoint->xy());
 191
 192       double x = aDir->x();
 193       double y = aDir->y();
 194       aDir->setX(-y);
 195       aDir->setY(x);
 196       if (!isStart[i])
 197         aDir = aDir->multiplied(-1.0);
 198     }
 199     aTangentDir[i] = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(aDir));
 200   }
 201   // By default, the start point of fillet arc is connected to FeatureA,
 202   // and the end point - to FeatureB. But when the angle between TangentDirA and
 203   // TangentDirB greater 180 degree, the sequaence of features need to be reversed.
 204   double cosBA = aTangentDir[0]->cross(aTangentDir[1]); // cos(B-A), where A and B - angles between corresponding tanget direction and the X axis
 205   bool isReversed = cosBA > 0.0;
 206
 207   std::shared_ptr<GeomAPI_Pnt2d> aSharedPoint = aStartEndPnt[isStart[0] ? 0 : 1];
 208   std::shared_ptr<GeomAPI_Dir2d> aBisect(new GeomAPI_Dir2d(
 209       aTangentDir[0]->xy()->added(aTangentDir[1]->xy())));
 210   std::shared_ptr<GeomAPI_XY> aStep = aBisect->xy()->multiplied(aFilletRadius);
 211   std::shared_ptr<GeomAPI_XY> aCenter = aSharedPoint->xy()->added(aStep);
 212   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 213       aNewArc->attribute(SketchPlugin_Arc::CENTER_ID()))->setValue(
 214       aCenter->x(), aCenter->y());
 215   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 216       aNewArc->attribute(SketchPlugin_Arc::START_ID()))->setValue(
 217       aSharedPoint->x() - 1.e-5 * aStep->y(), aSharedPoint->y() + 1.e-5 * aStep->x());
 218   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 219       aNewArc->attribute(SketchPlugin_Arc::END_ID()))->setValue(
 220       aSharedPoint->x() + 1.e-5 * aStep->y(), aSharedPoint->y() - 1.e-5 * aStep->x());
 221   aNewArc->execute();
 222   // attach new arc to the list
 223   aRefListOfFillet->append(aNewArc->lastResult());
 224   aRefListOfFillet->setInitialized();
 225
 226   // Create list of additional constraints:
 227   // 1. Coincidence of boundary points of features and fillet arc
 228   // 1.1. coincidence
 229   FeaturePtr aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 230   AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 231       aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 232   aRefAttr->setAttr(aNewArc->attribute(SketchPlugin_Arc::START_ID()));
 233   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 234       aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 235   int aFeatInd = isReversed ? 1 : 0;
 236   int anAttrInd = (isReversed ? 2 : 0) + (isStart[isReversed ? 1 : 0] ? 0 : 1);
 237   aRefAttr->setAttr(aFeature[aFeatInd]->attribute(aFeatAttributes[anAttrInd]));
 238   recalculateAttributes(aNewArc, SketchPlugin_Arc::START_ID(), aFeature[aFeatInd], aFeatAttributes[anAttrInd]);
 239   aConstraint->execute();
 240   ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 241   // 1.2. coincidence
 242   aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
 243   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 244       aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 245   aRefAttr->setAttr(aNewArc->attribute(SketchPlugin_Arc::END_ID()));
 246   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 247       aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 248   aFeatInd = isReversed ? 0 : 1;
 249   anAttrInd = (isReversed ? 0 : 2) + (isStart[isReversed ? 0 : 1] ? 0 : 1);
 250   aRefAttr->setAttr(aFeature[aFeatInd]->attribute(aFeatAttributes[anAttrInd]));
 251   recalculateAttributes(aNewArc, SketchPlugin_Arc::END_ID(), aFeature[aFeatInd], aFeatAttributes[anAttrInd]);
 252   aConstraint->execute();
 253   ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 254   // recalculate center of fillet arc
 255   std::shared_ptr<GeomAPI_Pnt2d> aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 256       aNewArc->attribute(SketchPlugin_Arc::START_ID()))->pnt();
 257   std::shared_ptr<GeomAPI_Pnt2d> aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 258       aNewArc->attribute(SketchPlugin_Arc::END_ID()))->pnt();
 259   aCenter = aStartPoint->xy()->added(aEndPoint->xy())->multiplied(0.5);
 260   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 261       aNewArc->attribute(SketchPlugin_Arc::CENTER_ID()))->setValue(
 262       aCenter->x(), aCenter->y());
 263   // 2. Fillet arc radius
 264   aConstraint = sketch()->addFeature(SketchPlugin_ConstraintRadius::ID());
 265   aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 266       aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 267   aRefAttr->setObject(aNewArc->lastResult());
 268   std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
 269       aConstraint->attribute(SketchPlugin_Constraint::VALUE()))->setValue(aFilletRadius);
 270   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 271       aConstraint->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()))->setValue(
 272       isStart[0] ? aStartEndPnt[0] : aStartEndPnt[1]);
 273   aConstraint->execute();
 274   ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 275   // 3. Tangency of fillet arc and features
 276   for (int i = 0; i < aNbFeatures; i++) {
 277     aConstraint = sketch()->addFeature(SketchPlugin_ConstraintTangent::ID());
 278     aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 279         aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
 280     aRefAttr->setObject(aNewArc->lastResult());
 281     aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
 282         aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
 283     bool isArc = aFeature[i]->getKind() == SketchPlugin_Arc::ID();
 284     aRefAttr->setObject(isArc ? aFeature[i]->lastResult() : aFeature[i]->firstResult());
 285     aConstraint->execute();
 286     ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
 287   }
 288
 289   // make base features auxiliary
 290   static Events_ID aRedisplayEvent = Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY);
 291   aFeatureA->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(true);
 292   aFeatureB->boolean(SketchPlugin_SketchEntity::AUXILIARY_ID())->setValue(true);
 293   ModelAPI_EventCreator::get()->sendUpdated(aFeatureA, aRedisplayEvent);
 294   ModelAPI_EventCreator::get()->sendUpdated(aFeatureB, aRedisplayEvent);
 295 ////  Events_Loop::loop()->flush(aRedisplayEvent);
 296
 297   // send events
 298   if (isUpdateFlushed)
 299     Events_Loop::loop()->setFlushed(anUpdateEvent, true);
 300   Events_Loop::loop()->flush(anUpdateEvent);
 301 }
 302
 303 AISObjectPtr SketchPlugin_ConstraintFillet::getAISObject(AISObjectPtr thePrevious)
 304 {
 305   if (!sketch())
 306     return thePrevious;
 307
 308   AISObjectPtr anAIS = thePrevious;
 309   /// TODO: Equal constraint presentation should be put here
 310   return anAIS;
 311 }
 312
 313
 314
 315 // =========   Auxiliary functions   =================
 316 void recalculateAttributes(FeaturePtr theNewArc,  const std::string& theNewArcAttribute,
 317                             FeaturePtr theFeature, const std::string& theFeatureAttribute)
 318 {
 319   std::shared_ptr<GeomAPI_Pnt2d> anArcPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 320       theNewArc->attribute(theNewArcAttribute))->pnt();
 321   if (theFeature->getKind() == SketchPlugin_Line::ID()) {
 322     std::shared_ptr<GeomAPI_Pnt2d> aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 323         theFeature->attribute(SketchPlugin_Line::START_ID()))->pnt();
 324     std::shared_ptr<GeomAPI_Pnt2d> aEndPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 325         theFeature->attribute(SketchPlugin_Line::END_ID()))->pnt();
 326     std::shared_ptr<GeomAPI_Dir2d> aLineDir(new GeomAPI_Dir2d(
 327         aEndPoint->xy()->decreased(aStartPoint->xy())));
 328     std::shared_ptr<GeomAPI_XY> aVec = anArcPoint->xy()->decreased(aStartPoint->xy());
 329     double aDot = aVec->dot(aLineDir->xy());
 330     aVec = aStartPoint->xy()->added(aLineDir->xy()->multiplied(aDot));
 331     anArcPoint->setX(aVec->x());
 332     anArcPoint->setY(aVec->y());
 333   } else if (theFeature->getKind() == SketchPlugin_Arc::ID()) {
 334     std::shared_ptr<GeomAPI_Pnt2d> aStartPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 335         theFeature->attribute(SketchPlugin_Arc::START_ID()))->pnt();
 336     std::shared_ptr<GeomAPI_Pnt2d> aCenterPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 337         theFeature->attribute(SketchPlugin_Arc::END_ID()))->pnt();
 338     double aRadius = aStartPoint->distance(aCenterPoint);
 339     std::shared_ptr<GeomAPI_Dir2d> aDir(new GeomAPI_Dir2d(
 340         anArcPoint->xy()->decreased(aCenterPoint->xy())));
 341     std::shared_ptr<GeomAPI_XY> aPoint = aCenterPoint->xy()->added(aDir->xy()->multiplied(aRadius));
 342     anArcPoint->setX(aPoint->x());
 343     anArcPoint->setY(aPoint->y());
 344   } else
 345     return;
 346
 347   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 348       theNewArc->attribute(theNewArcAttribute))->setValue(anArcPoint->x(), anArcPoint->y());
 349   std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 350       theFeature->attribute(theFeatureAttribute))->setValue(anArcPoint->x(), anArcPoint->y());
 351 }