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
  18 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  19 {
  20 }
  21
  22 //*************************************************************************************
  23 void SketchPlugin_ConstraintDistance::initAttributes()
  24 {
  25   data()->addAttribute(SketchPlugin_Constraint::VALUE(),    ModelAPI_AttributeDouble::type());
  26   data()->addAttribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT(), GeomDataAPI_Point2D::type());
  27   data()->addAttribute(SketchPlugin_Constraint::ENTITY_A(), ModelAPI_AttributeRefAttr::type());
  28   data()->addAttribute(SketchPlugin_Constraint::ENTITY_B(), ModelAPI_AttributeRefAttr::type());
  29 }
  30
  31 //*************************************************************************************
  32 void SketchPlugin_ConstraintDistance::execute()
  33 {
  34   boost::shared_ptr<ModelAPI_Data> aData = data();
  35   AttributeDoublePtr anAttr_Value =
  36     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
  37       aData->attribute(SketchPlugin_Constraint::VALUE()));
  38
  39   if (!anAttr_Value->isInitialized()) {
  40     boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A =
  41       getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A());
  42     boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B =
  43       getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B());
  44
  45     if (aPoint_A && aPoint_B) { // both points
  46         anAttr_Value->setValue(aPoint_A->pnt()->distance(aPoint_B->pnt()));
  47     } else {
  48       if (!aPoint_A && aPoint_B) { //Line and point
  49         boost::shared_ptr<SketchPlugin_Line> aLine =
  50           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
  51         if (aLine)
  52           anAttr_Value->setValue(aLine->distanceToPoint(aPoint_B->pnt()));
  53       } else if (aPoint_A && !aPoint_B) { // Point and line
  54         boost::shared_ptr<SketchPlugin_Line> aLine =
  55           getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
  56         if(aLine)
  57           anAttr_Value->setValue(aLine->distanceToPoint(aPoint_A->pnt()));
  58       }
  59     }
  60   }
  61 }
  62
  63 //*************************************************************************************
  64 boost::shared_ptr<GeomAPI_AISObject> SketchPlugin_ConstraintDistance::getAISObject(
  65                     boost::shared_ptr<GeomAPI_AISObject> thePrevious)
  66 {
  67   if (!sketch())
  68     return thePrevious;
  69
  70   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  71
  72   DataPtr aData = data();
  73   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_A());
  74   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, SketchPlugin_Constraint::ENTITY_B());
  75
  76   boost::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
  77   boost::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
  78
  79   if (aPoint_A && aPoint_B) {
  80     aPnt_A = aPoint_A->pnt();
  81     aPnt_B = aPoint_B->pnt();
  82   } else if (!aPoint_A && aPoint_B) {
  83     boost::shared_ptr<SketchPlugin_Line> aLine =
  84       getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_A());
  85     if (aLine) {
  86       aPnt_B = aPoint_B->pnt();
  87       aPnt_A = getProjectionPoint(aLine, aPnt_B);
  88     }
  89   } else if (aPoint_A && !aPoint_B) {
  90     boost::shared_ptr<SketchPlugin_Line> aLine =
  91       getFeatureLine(aData, SketchPlugin_Constraint::ENTITY_B());
  92     if (aLine) {
  93       aPnt_A = aPoint_A->pnt();
  94       aPnt_B = getProjectionPoint(aLine, aPnt_A);
  95     }
  96   }
  97   if (!aPnt_A || !aPnt_B)
  98     return thePrevious;
  99
 100   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
 101     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 102
 103   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPnt_A->x(), aPnt_A->y());
 104   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPnt_B->x(), aPnt_B->y());
 105   boost::shared_ptr<GeomAPI_Pnt> aFlyoutPnt = aFlyOutAttr->isInitialized() ?
 106                                               sketch()->to3D(aFlyOutAttr->x(), aFlyOutAttr->y()) :
 107                                               boost::shared_ptr<GeomAPI_Pnt>();
 108
 109   // value calculation
 110   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
 111     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(SketchPlugin_Constraint::VALUE()));
 112   double aValue = aValueAttr->value();
 113
 114   boost::shared_ptr<GeomAPI_AISObject> anAIS = thePrevious;
 115   if (!anAIS)
 116     anAIS = boost::shared_ptr<GeomAPI_AISObject>(new GeomAPI_AISObject);
 117   anAIS->createDistance(aPoint1, aPoint2, aFlyoutPnt, aPlane, aValue);
 118   return anAIS;
 119 }
 120
 121 //*************************************************************************************
 122 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 123 {
 124   boost::shared_ptr<ModelAPI_Data> aData = data();
 125   if (!aData->isValid())
 126     return;
 127
 128   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 129         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(SketchPlugin_Constraint::FLYOUT_VALUE_PNT()));
 130   aPoint1->setValue(aPoint1->x() + theDeltaX, aPoint1->y() + theDeltaY);
 131 }
 132
 133 //*************************************************************************************
 134 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 135                                                        const std::string& theAttribute)
 136 {
 137   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 138
 139   if (!theData)
 140     return aPointAttr;
 141
 142   FeaturePtr aFeature;
 143   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 144     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 145   if (anAttr)
 146     aFeature = ModelAPI_Feature::feature(anAttr->object());
 147
 148   if (aFeature && aFeature->getKind() == SketchPlugin_Point::ID())
 149     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 150                                            (aFeature->data()->attribute(SketchPlugin_Point::COORD_ID()));
 151   else if (aFeature && aFeature->getKind() == SketchPlugin_Circle::ID())
 152     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 153                                           (aFeature->data()->attribute(SketchPlugin_Circle::CENTER_ID()));
 154   else if (anAttr->attr()) {
 155       aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr->attr());
 156   }
 157   return aPointAttr;
 158 }
 159
 160 //*************************************************************************************
 161 boost::shared_ptr<SketchPlugin_Line> getFeatureLine(DataPtr theData, const std::string& theAttribute)
 162 {
 163   boost::shared_ptr<SketchPlugin_Line> aLine;
 164   if (!theData)
 165     return aLine;
 166
 167   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 168     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 169   if (anAttr) {
 170     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 171     if (aFeature && aFeature->getKind() == SketchPlugin_Line::ID()) {
 172       aLine = boost::dynamic_pointer_cast<SketchPlugin_Line>(aFeature);
 173     }
 174   }
 175   return aLine;
 176 }
 177
 178 //*************************************************************************************
 179 boost::shared_ptr<GeomAPI_Pnt2d> getProjectionPoint(const boost::shared_ptr<SketchPlugin_Line>& theLine,
 180                                                           const boost::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 181 {
 182   boost::shared_ptr<ModelAPI_Data> aData = theLine->data();
 183   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 184         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 185         aData->attribute(SketchPlugin_Line::START_ID()));
 186   boost::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 187         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 188         aData->attribute(SketchPlugin_Line::END_ID()));
 189
 190   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 191   return aLin2d.project(thePoint);
 192 }