src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_ConstraintDistance.cpp
   4 // Created: 23 May 2014
   5 // Author:  Artem ZHIDKOV
   6
   7 #include "SketchPlugin_ConstraintDistance.h"
   8 #include <SketchPlugin_Point.h>
   9 #include <SketchPlugin_Circle.h>
  10 #include <SketchPlugin_Line.h>
  11
  12 #include <GeomAPI_Lin2d.h>
  13 #include <GeomAPI_Pnt2d.h>
  14 #include <GeomDataAPI_Point2D.h>
  15
  16 #include <ModelAPI_AttributeDouble.h>
  17 #include <ModelAPI_Data.h>
  18
  19 #include <Config_PropManager.h>
  20
  21 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  22 {
  23 }
  24
  25 //*************************************************************************************
  26 void SketchPlugin_ConstraintDistance::initAttributes()
  27 {
  28   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::type());
  29   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::type());
  30   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::type());
  31   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::type());
  32 }
  33
  34 //*************************************************************************************
  35 void SketchPlugin_ConstraintDistance::execute()
  36 {
  37   std::shared_ptr<ModelAPI_Data> aData = data();
  38   AttributeDoublePtr anAttrValue = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  39       aData->attribute(SketchPlugin_Constraint::VALUE()));
  40
  41   if(anAttrValue->isInitialized())
  42     return;
  43
  44   double aDistance = calculateCurrentDistance();
  45   if(aDistance >= 0) {
  46     anAttrValue->setValue(aDistance);
  47   }
  48 }
  49
  50 //*************************************************************************************
  51 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  52 {
  53   if (!sketch())
  54     return thePrevious;
  55
  56   std::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  57
  58   DataPtr aData = data();
  59   std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(
  60       aData, SketchPlugin_Constraint::ENTITY_A());
  61   std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(
  62       aData, SketchPlugin_Constraint::ENTITY_B());
  63
  64   std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
  65   std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
  66
  67   if (aPoint_A && aPoint_B) {
  68     aPnt_A = aPoint_A->pnt();
  69     aPnt_B = aPoint_B->pnt();
  70   } else if (!aPoint_A && aPoint_B) {
  71     std::shared_ptr<SketchPlugin_Line> aLine = getFeatureLine(
  72         aData, SketchPlugin_Constraint::ENTITY_A());
  73     if (aLine) {
  74       aPnt_B = aPoint_B->pnt();
  75       aPnt_A = getProjectionPoint(aLine, aPnt_B);
  76     }
  77   } else if (aPoint_A && !aPoint_B) {
  78     std::shared_ptr<SketchPlugin_Line> aLine = getFeatureLine(
  79         aData, SketchPlugin_Constraint::ENTITY_B());
  80     if (aLine) {
  81       aPnt_A = aPoint_A->pnt();
  82       aPnt_B = getProjectionPoint(aLine, aPnt_A);
  83     }
  84   }
  85   if (!aPnt_A || !aPnt_B)
  86     return AISObjectPtr();
  87
  88   std::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = std::dynamic_pointer_cast<
  89       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
  90
  91   std::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPnt_A->x(), aPnt_A->y());
  92   std::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPnt_B->x(), aPnt_B->y());
  93   std::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = std::shared_ptr<GeomAPI_Pnt>();
  94   if(aFlyOutAttr->isInitialized()) {
  95     aFlyoutPnt = sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y());
  96   } else {
  97     std::shared_ptr<GeomAPI_Lin2d> aLine = std::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPnt_A, aPnt_B));
  98     double aDist = aPoint1->distance(aPoint2)/5.;
  99     std::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
 100     aFlyOutAttr->setValue(aFPnt);
 101     aFlyoutPnt = sketch()->to3D(aFPnt->x(), aFPnt->y());
 102   }
 103   // value calculation
 104   std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 105       ModelAPI_AttributeDouble>(aData->attribute(SketchPlugin_Constraint::VALUE()));
 106   double aValue = 0;
 107   // Issue #196: checking the positivity of the distance constraint
 108   // there is a validator for a distance constraint, that the value should be positive
 109   // in case if an invalid value is set, the current distance value is shown
 110   if (aValueAttr->isInitialized())
 111     aValue = aValueAttr->value();
 112
 113   AISObjectPtr anAIS = thePrevious;
 114   if (!anAIS)
 115     anAIS = AISObjectPtr(new GeomAPI_AISObject);
 116   anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
 117
 118   // Set color from preferences
 119   std::vector<int> aRGB = Config_PropManager::color("Visualization", "distance_color",
 120                                                     DISTANCE_COLOR);
 121   anAIS->setColor(aRGB[0], aRGB[1], aRGB[2]);
 122   return anAIS;
 123 }
 124
 125 //*************************************************************************************
 126 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 127 {
 128   std::shared_ptr<ModelAPI_Data> aData = data();
 129   if (!aData->isValid())
 130     return;
 131
 132   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 133       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 134   aPoint->move(theDeltaX, theDeltaY);
 135 }
 136
 137 double SketchPlugin_ConstraintDistance::calculateCurrentDistance() const
 138 {
 139   double aDistance = -1.;
 140
 141   std::shared_ptr<ModelAPI_Data> aData = data();
 142   std::shared_ptr<GeomDataAPI_Point2D> aPointA =
 143     getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A());
 144   std::shared_ptr<GeomDataAPI_Point2D> aPointB =
 145       getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B());
 146
 147   if (aPointA && aPointB) {  // both points
 148     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 149   } else {
 150     if (!aPointA && aPointB) {  //Line and point
 151       std::shared_ptr<SketchPlugin_Line> aLine =
 152           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 153       if (aLine) {
 154         aDistance = aLine->distanceToPoint(aPointB->pnt());
 155       }
 156     } else if (aPointA && !aPointB) {  // Point and line
 157       std::shared_ptr<SketchPlugin_Line> aLine =
 158           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 159       if (aLine) {
 160         aDistance = aLine->distanceToPoint(aPointA->pnt());
 161       }
 162     }
 163   }
 164   return aDistance;
 165 }
 166
 167 void SketchPlugin_ConstraintDistance::attributeChanged(const std::string& theID) {
 168   if (theID == SketchPlugin_Constraint::ENTITY_A() ||
 169       theID == SketchPlugin_Constraint::ENTITY_B())
 170   {
 171     std::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = std::dynamic_pointer_cast<
 172         ModelAPI_AttributeDouble>(data()->attribute(SketchPlugin_Constraint::VALUE()));
 173     if (!aValueAttr->isInitialized()) { // only if it is not initialized, try to compute the current value
 174       double aDistance = calculateCurrentDistance();
 175       if (aDistance > 0) { // set as value the length of updated references
 176         aValueAttr->setValue(aDistance);
 177       }
 178     }
 179   }
 180 }
 181
 182 //*************************************************************************************
 183 std::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 184                                                        const std::string& theAttribute)
 185 {
 186   std::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 187
 188   if (!theData)
 189     return aPointAttr;
 190
 191   FeaturePtr aFeature;
 192   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 193       ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 194   if (anAttr)
 195     aFeature = ModelAPI_Feature::feature(anAttr->object());
 196
 197   if (aFeature && aFeature->getKind() == SketchPlugin_Point::ID())
 198     aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 199         aFeature->data()->attribute(SketchPlugin_Point::COORD_ID()));
 200   else if (aFeature && aFeature->getKind() == SketchPlugin_Circle::ID())
 201     aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 202         aFeature->data()->attribute(SketchPlugin_Circle::CENTER_ID()));
 203   else if (anAttr->attr()) {
 204     aPointAttr = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr->attr());
 205   }
 206   return aPointAttr;
 207 }
 208
 209 //*************************************************************************************
 210 std::shared_ptr<SketchPlugin_Line> getFeatureLine(DataPtr theData,
 211                                                     const std::string& theAttribute)
 212 {
 213   std::shared_ptr<SketchPlugin_Line> aLine;
 214   if (!theData)
 215     return aLine;
 216
 217   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = std::dynamic_pointer_cast<
 218       ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 219   if (anAttr) {
 220     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 221     if (aFeature && aFeature->getKind() == SketchPlugin_Line::ID()) {
 222       aLine = std::dynamic_pointer_cast<SketchPlugin_Line>(aFeature);
 223     }
 224   }
 225   return aLine;
 226 }
 227
 228 //*************************************************************************************
 229 std::shared_ptr<GeomAPI_Pnt2d> getProjectionPoint(
 230     const std::shared_ptr<SketchPlugin_Line>& theLine,
 231     const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 232 {
 233   std::shared_ptr<ModelAPI_Data> aData = theLine->data();
 234   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 235       aData->attribute(SketchPlugin_Line::START_ID()));
 236   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 237       aData->attribute(SketchPlugin_Line::END_ID()));
 238
 239   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 240   return aLin2d.project(thePoint);
 241 }