src/SketchSolver/SketchSolver_ConstraintMovement.cpp

   1 // Copyright (C) 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_ConstraintMovement.h>
  22 #include <SketchSolver_Error.h>
  23 #include <SketchSolver_Manager.h>
  24
  25 #include <PlaneGCSSolver_EdgeWrapper.h>
  26 #include <PlaneGCSSolver_PointWrapper.h>
  27
  28 #include <SketchPlugin_Arc.h>
  29 #include <SketchPlugin_Circle.h>
  30 #include <SketchPlugin_Line.h>
  31 #include <SketchPlugin_Point.h>
  32
  33 #include <GeomDataAPI_Point2D.h>
  34
  35 #include <GeomAPI_Pnt2d.h>
  36
  37
  38 SketchSolver_ConstraintMovement::SketchSolver_ConstraintMovement(FeaturePtr theFeature)
  39   : SketchSolver_ConstraintFixed(ConstraintPtr()),
  40     myMovedFeature(theFeature),
  41     mySimpleMove(true)
  42 {
  43 }
  44
  45 SketchSolver_ConstraintMovement::SketchSolver_ConstraintMovement(AttributePtr thePoint)
  46   : SketchSolver_ConstraintFixed(ConstraintPtr()),
  47     myDraggedPoint(thePoint),
  48     mySimpleMove(true)
  49 {
  50   myMovedFeature = ModelAPI_Feature::feature(thePoint->owner());
  51 }
  52
  53 void SketchSolver_ConstraintMovement::blockEvents(bool isBlocked)
  54 {
  55   if (myMovedFeature)
  56     myMovedFeature->data()->blockSendAttributeUpdated(isBlocked);
  57 }
  58
  59 void SketchSolver_ConstraintMovement::process()
  60 {
  61   cleanErrorMsg();
  62   if (!myMovedFeature || !myStorage) {
  63     // Not enough parameters are initialized
  64     return;
  65   }
  66
  67   mySolverConstraint = initMovement();
  68   if (!myErrorMsg.empty() || !mySolverConstraint) {
  69     // Nothing to move, clear the feature to avoid changing its group
  70     // after removing the Movement constraint.
  71     myMovedFeature = FeaturePtr();
  72     return;
  73   }
  74   myStorage->addMovementConstraint(mySolverConstraint);
  75 }
  76
  77
  78 static bool isSimpleMove(FeaturePtr theMovedFeature, AttributePtr theDraggedPoint)
  79 {
  80   bool isSimple = true;
  81   if (theMovedFeature->getKind() == SketchPlugin_Circle::ID())
  82     isSimple = (theDraggedPoint.get() != 0);
  83   else if (theMovedFeature->getKind() == SketchPlugin_Arc::ID()) {
  84     isSimple = (theDraggedPoint.get() != 0 &&
  85                 theDraggedPoint->id() == SketchPlugin_Arc::CENTER_ID());
  86   }
  87   return isSimple;
  88 }
  89
  90 ConstraintWrapperPtr SketchSolver_ConstraintMovement::initMovement()
  91 {
  92   ConstraintWrapperPtr aConstraint;
  93
  94   // if the feature is copy, do not move it
  95   std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
  96       std::dynamic_pointer_cast<SketchPlugin_Feature>(myMovedFeature);
  97   if (!aSketchFeature || aSketchFeature->isCopy()) {
  98     myStorage->setNeedToResolve(true);
  99     return aConstraint;
 100   }
 101
 102   EntityWrapperPtr anEntity =
 103       myDraggedPoint ? myStorage->entity(myDraggedPoint) : myStorage->entity(myMovedFeature);
 104   if (!anEntity) {
 105     myStorage->update(myMovedFeature, true);
 106     anEntity =
 107         myDraggedPoint ? myStorage->entity(myDraggedPoint) : myStorage->entity(myMovedFeature);
 108     if (!anEntity)
 109       return aConstraint;
 110   }
 111
 112   mySimpleMove = isSimpleMove(myMovedFeature, myDraggedPoint);
 113
 114   if (mySimpleMove)
 115     aConstraint = fixFeature(anEntity);
 116   else {
 117     if (myDraggedPoint) // start or end point of arc has been moved
 118       aConstraint = fixArcExtremity(anEntity);
 119     else // arc or circle has been moved
 120       aConstraint = fixPointOnCircle(anEntity);
 121   }
 122
 123   return aConstraint;
 124 }
 125
 126 ConstraintWrapperPtr SketchSolver_ConstraintMovement::fixArcExtremity(
 127     const EntityWrapperPtr& theArcExtremity)
 128 {
 129   static const int nbParams = 4;
 130   myFixedValues.reserve(nbParams); // moved point and center of arc
 131
 132   EdgeWrapperPtr aCircularEntity = std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(
 133       myStorage->entity(myMovedFeature));
 134   std::shared_ptr<GCS::Arc> anArc =
 135       std::dynamic_pointer_cast<GCS::Arc>(aCircularEntity->entity());
 136
 137   PointWrapperPtr aPoint =
 138       std::dynamic_pointer_cast<PlaneGCSSolver_PointWrapper>(theArcExtremity);
 139
 140   double* aParams[nbParams] = { aPoint->point()->x, aPoint->point()->y,
 141                                 anArc->center.x, anArc->center.y };
 142
 143   std::list<GCSConstraintPtr> aConstraints;
 144   for (int i = 0; i < nbParams; ++i) {
 145     myFixedValues.push_back(*aParams[i]);
 146     GCSConstraintPtr aNewConstraint(new GCS::ConstraintEqual(&myFixedValues[i], aParams[i]));
 147     aNewConstraint->rescale(0.01);
 148     aConstraints.push_back(aNewConstraint);
 149   }
 150
 151   return ConstraintWrapperPtr(
 152       new PlaneGCSSolver_ConstraintWrapper(aConstraints, getType()));
 153 }
 154
 155 ConstraintWrapperPtr SketchSolver_ConstraintMovement::fixPointOnCircle(
 156     const EntityWrapperPtr& theCircular)
 157 {
 158   static const double scale = 0.01;
 159   static const int nbParams = 4;
 160   myFixedValues.reserve(nbParams); // moved point and center of arc/circle
 161
 162   EdgeWrapperPtr aCircularEntity =
 163       std::dynamic_pointer_cast<PlaneGCSSolver_EdgeWrapper>(theCircular);
 164   std::shared_ptr<GCS::Circle> aCircular =
 165       std::dynamic_pointer_cast<GCS::Circle>(aCircularEntity->entity());
 166
 167   // initialize fixed values
 168   myFixedValues.push_back(*aCircular->center.x + *aCircular->rad);
 169   myFixedValues.push_back(*aCircular->center.y);
 170   myFixedValues.push_back(*aCircular->center.x);
 171   myFixedValues.push_back(*aCircular->center.y);
 172
 173   // create a moved point
 174   GCS::Point aPointOnCircle;
 175   aPointOnCircle.x = &myFixedValues[0];
 176   aPointOnCircle.y = &myFixedValues[1];
 177
 178   std::list<GCSConstraintPtr> aConstraints;
 179   // point-on-circle
 180   GCSConstraintPtr aNewConstraint(
 181       new GCS::ConstraintP2PDistance(aPointOnCircle, aCircular->center, aCircular->rad));
 182   aNewConstraint->rescale(scale);
 183   aConstraints.push_back(aNewConstraint);
 184   // fixed center (x)
 185   aNewConstraint = GCSConstraintPtr(
 186       new GCS::ConstraintEqual(&myFixedValues[2], aCircular->center.x));
 187   aNewConstraint->rescale(scale);
 188   aConstraints.push_back(aNewConstraint);
 189   // fixed center (y)
 190   aNewConstraint = GCSConstraintPtr(
 191       new GCS::ConstraintEqual(&myFixedValues[3], aCircular->center.y));
 192   aNewConstraint->rescale(scale);
 193   aConstraints.push_back(aNewConstraint);
 194
 195   return ConstraintWrapperPtr(
 196       new PlaneGCSSolver_ConstraintWrapper(aConstraints, getType()));
 197 }
 198
 199
 200 void SketchSolver_ConstraintMovement::startPoint(
 201     const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint)
 202 {
 203   myStartPoint = theStartPoint;
 204   if (!mySimpleMove) {
 205     myFixedValues[0] = myStartPoint->x();
 206     myFixedValues[1] = myStartPoint->y();
 207   }
 208 }
 209
 210 void SketchSolver_ConstraintMovement::moveTo(
 211     const std::shared_ptr<GeomAPI_Pnt2d>& theDestinationPoint)
 212 {
 213   double aDelta[2] = { theDestinationPoint->x() - myStartPoint->x(),
 214                        theDestinationPoint->y() - myStartPoint->y() };
 215
 216   int aMaxSize = mySimpleMove ? (int)myFixedValues.size() : 2;
 217   for (int i = 0; i < aMaxSize; ++i)
 218     myFixedValues[i] += aDelta[i % 2];
 219 }