src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp

   1 // File:    SketchPlugin_ConstraintDistance.cpp
   2 // Created: 23 May 2014
   3 // Author:  Artem ZHIDKOV
   4
   5 #include "SketchPlugin_ConstraintDistance.h"
   6 #include <SketchPlugin_Point.h>
   7 #include <SketchPlugin_Circle.h>
   8 #include <SketchPlugin_Line.h>
   9
  10 #include <GeomAPI_Lin2d.h>
  11 #include <GeomAPI_Pnt2d.h>
  12 #include <GeomDataAPI_Point2D.h>
  13
  14 #include <ModelAPI_AttributeDouble.h>
  15 #include <ModelAPI_Data.h>
  16
  17 #include <Config_PropManager.h>
  18
  19 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  20 {
  21 }
  22
  23 //*************************************************************************************
  24 void SketchPlugin_ConstraintDistance::initAttributes()
  25 {
  26   data()->addAttribute(SketchPlugin_Constraint::VALUE(), ModelAPI_AttributeDouble::type());
  27   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::type());
  28   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::type());
  29   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::type());
  30 }
  31
  32 //*************************************************************************************
  33 void SketchPlugin_ConstraintDistance::execute()
  34 {
  35   boost::shared_ptr<ModelAPI_Data> aData = data();
  36   AttributeDoublePtr anAttrValue = boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  37       aData->attribute(SketchPlugin_Constraint::VALUE()));
  38
  39   if(anAttrValue->isInitialized())
  40     return;
  41
  42   double aDistance = calculateCurrentDistance();
  43   if(aDistance >= 0) {
  44     anAttrValue->setValue(aDistance);
  45   }
  46 }
  47
  48 //*************************************************************************************
  49 AISObjectPtr SketchPlugin_ConstraintDistance::getAISObject(AISObjectPtr thePrevious)
  50 {
  51   if (!sketch())
  52     return thePrevious;
  53
  54   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  55
  56   DataPtr aData = data();
  57   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(
  58       aData, SketchPlugin_Constraint::ENTITY_A());
  59   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(
  60       aData, SketchPlugin_Constraint::ENTITY_B());
  61
  62   boost::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
  63   boost::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
  64
  65   if (aPoint_A && aPoint_B) {
  66     aPnt_A = aPoint_A->pnt();
  67     aPnt_B = aPoint_B->pnt();
  68   } else if (!aPoint_A && aPoint_B) {
  69     boost::shared_ptr<SketchPlugin_Line> aLine = getFeatureLine(
  70         aData, SketchPlugin_Constraint::ENTITY_A());
  71     if (aLine) {
  72       aPnt_B = aPoint_B->pnt();
  73       aPnt_A = getProjectionPoint(aLine, aPnt_B);
  74     }
  75   } else if (aPoint_A && !aPoint_B) {
  76     boost::shared_ptr<SketchPlugin_Line> aLine = getFeatureLine(
  77         aData, SketchPlugin_Constraint::ENTITY_B());
  78     if (aLine) {
  79       aPnt_A = aPoint_A->pnt();
  80       aPnt_B = getProjectionPoint(aLine, aPnt_A);
  81     }
  82   }
  83   if (!aPnt_A || !aPnt_B)
  84     return AISObjectPtr();
  85
  86   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr = boost::dynamic_pointer_cast<
  87       GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
  88
  89   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPnt_A->x(), aPnt_A->y());
  90   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPnt_B->x(), aPnt_B->y());
  91   boost::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = boost::shared_ptr<GeomAPI_Pnt>();
  92   if(aFlyOutAttr->isInitialized()) {
  93     aFlyoutPnt = sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y());
  94   } else {
  95     boost::shared_ptr<GeomAPI_Lin2d> aLine = boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPnt_A, aPnt_B));
  96     double aDist = aPoint1->distance(aPoint2)/5.;
  97     boost::shared_ptr<GeomAPI_Pnt2d> aFPnt = aLine->shiftedLocation(aDist);
  98     aFlyOutAttr->setValue(aFPnt);
  99     aFlyoutPnt = sketch()->to3D(aFPnt->x(), aFPnt->y());
 100   }
 101   // value calculation
 102   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr = boost::dynamic_pointer_cast<
 103       ModelAPI_AttributeDouble>(aData->attribute(SketchPlugin_Constraint::VALUE()));
 104   double aValue = aValueAttr->value();
 105   // Issue #196: checking the positivity of the distance constraint
 106   // there is a validator for a distance constraint, that the value should be positive
 107   // in case if an invalid value is set, the current distance value is shown
 108   if (aValue <= 0)
 109     aValue = calculateCurrentDistance();
 110
 111   AISObjectPtr anAIS = thePrevious;
 112   if (!anAIS)
 113     anAIS = AISObjectPtr(new GeomAPI_AISObject);
 114   anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
 115
 116   // Set color from preferences
 117   std::vector<int> aRGB = Config_PropManager::color("Visualization", "distance_color",
 118                                                     DISTANCE_COLOR);
 119   anAIS->setColor(aRGB[0], aRGB[1], aRGB[2]);
 120   return anAIS;
 121 }
 122
 123 //*************************************************************************************
 124 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 125 {
 126   boost::shared_ptr<ModelAPI_Data> aData = data();
 127   if (!aData->isValid())
 128     return;
 129
 130   boost::shared_ptr<GeomDataAPI_Point2D> aPoint = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 131       aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 132   aPoint->move(theDeltaX, theDeltaY);
 133 }
 134
 135 double SketchPlugin_ConstraintDistance::calculateCurrentDistance() const
 136 {
 137   double aDistance = -1.;
 138
 139   boost::shared_ptr<ModelAPI_Data> aData = data();
 140   boost::shared_ptr<GeomDataAPI_Point2D> aPointA =
 141     getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A());
 142   boost::shared_ptr<GeomDataAPI_Point2D> aPointB =
 143       getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B());
 144
 145   if (aPointA && aPointB) {  // both points
 146     aDistance = aPointA->pnt()->distance(aPointB->pnt());
 147   } else {
 148     if (!aPointA && aPointB) {  //Line and point
 149       boost::shared_ptr<SketchPlugin_Line> aLine =
 150           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
 151       if (aLine) {
 152         aDistance = aLine->distanceToPoint(aPointB->pnt());
 153       }
 154     } else if (aPointA && !aPointB) {  // Point and line
 155       boost::shared_ptr<SketchPlugin_Line> aLine =
 156           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
 157       if (aLine) {
 158         aDistance = aLine->distanceToPoint(aPointA->pnt());
 159       }
 160     }
 161   }
 162   return aDistance;
 163 }
 164
 165
 166 //*************************************************************************************
 167 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 168                                                        const std::string& theAttribute)
 169 {
 170   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 171
 172   if (!theData)
 173     return aPointAttr;
 174
 175   FeaturePtr aFeature;
 176   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = boost::dynamic_pointer_cast<
 177       ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 178   if (anAttr)
 179     aFeature = ModelAPI_Feature::feature(anAttr->object());
 180
 181   if (aFeature && aFeature->getKind() == SketchPlugin_Point::ID())
 182     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 183         aFeature->data()->attribute(SketchPlugin_Point::COORD_ID()));
 184   else if (aFeature && aFeature->getKind() == SketchPlugin_Circle::ID())
 185     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 186         aFeature->data()->attribute(SketchPlugin_Circle::CENTER_ID()));
 187   else if (anAttr->attr()) {
 188     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr->attr());
 189   }
 190   return aPointAttr;
 191 }
 192
 193 //*************************************************************************************
 194 boost::shared_ptr<SketchPlugin_Line> getFeatureLine(DataPtr theData,
 195                                                     const std::string& theAttribute)
 196 {
 197   boost::shared_ptr<SketchPlugin_Line> aLine;
 198   if (!theData)
 199     return aLine;
 200
 201   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = boost::dynamic_pointer_cast<
 202       ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 203   if (anAttr) {
 204     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 205     if (aFeature && aFeature->getKind() == SketchPlugin_Line::ID()) {
 206       aLine = boost::dynamic_pointer_cast<SketchPlugin_Line>(aFeature);
 207     }
 208   }
 209   return aLine;
 210 }
 211
 212 //*************************************************************************************
 213 boost::shared_ptr<GeomAPI_Pnt2d> getProjectionPoint(
 214     const boost::shared_ptr<SketchPlugin_Line>& theLine,
 215     const boost::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 216 {
 217   boost::shared_ptr<ModelAPI_Data> aData = theLine->data();
 218   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 219       aData->attribute(SketchPlugin_Line::START_ID()));
 220   boost::shared_ptr<GeomDataAPI_Point2D> aPoint2 = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 221       aData->attribute(SketchPlugin_Line::END_ID()));
 222
 223   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 224   return aLin2d.project(thePoint);
 225 }