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
   8 #include <GeomAPI_Lin2D.h>
   9 #include <GeomAPI_Pnt2D.h>
  10 #include <GeomDataAPI_Point2D.h>
  11
  12 #include <ModelAPI_AttributeDouble.h>
  13 #include <ModelAPI_Data.h>
  14
  15 #include <AIS_LengthDimension.hxx>
  16 #include <gp_Pnt.hxx>
  17 #include <gp_Pln.hxx>
  18
  19 /// Obtain the point object from specified constraint parameter
  20 static boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(
  21             DataPtr             theData,
  22             const std::string&  theAttribute);
  23
  24
  25 SketchPlugin_ConstraintDistance::SketchPlugin_ConstraintDistance()
  26 {
  27 }
  28
  29 void SketchPlugin_ConstraintDistance::initAttributes()
  30 {
  31   data()->addAttribute(CONSTRAINT_ATTR_VALUE,    ModelAPI_AttributeDouble::type());
  32   data()->addAttribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT, GeomDataAPI_Point2D::type());
  33   data()->addAttribute(CONSTRAINT_ATTR_ENTITY_A, ModelAPI_AttributeRefAttr::type());
  34   data()->addAttribute(CONSTRAINT_ATTR_ENTITY_B, ModelAPI_AttributeRefAttr::type());
  35 }
  36
  37 void SketchPlugin_ConstraintDistance::execute()
  38 {
  39   boost::shared_ptr<ModelAPI_Data> aData = data();
  40
  41   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr_A =
  42           boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(aData->attribute(CONSTRAINT_ATTR_ENTITY_A));
  43   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr_B =
  44           boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(aData->attribute(CONSTRAINT_ATTR_ENTITY_B));
  45
  46   AttributeDoublePtr anAttr_Value =
  47       boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  48   if (anAttr_A->isInitialized() && anAttr_B->isInitialized() && !anAttr_Value->isInitialized())
  49   {
  50     FeaturePtr aFeature_A = anAttr_A->feature();
  51     FeaturePtr aFeature_B = anAttr_B->feature();
  52     if (aFeature_A && aFeature_A) {
  53       // calculate the distance
  54       boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A =
  55         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
  56                                              (aFeature_A->data()->attribute(POINT_ATTR_COORD));
  57       boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B =
  58         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
  59                                              (aFeature_B->data()->attribute(POINT_ATTR_COORD));
  60       if (aPoint_A && aPoint_B) {
  61         anAttr_Value->setValue(aPoint_A->pnt()->distance(aPoint_B->pnt()));
  62       }
  63     }
  64   }
  65 }
  66
  67 Handle(AIS_InteractiveObject) SketchPlugin_ConstraintDistance::getAISShape(
  68   Handle_AIS_InteractiveObject thePrevious)
  69 {
  70   if (!sketch())
  71     return thePrevious;
  72
  73   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  74
  75   DataPtr aData = data();
  76   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  77   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  78   if (!aPoint_A || !aPoint_B)
  79     return thePrevious;
  80
  81   // fly out calculation
  82   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
  83     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
  84   double aFlyout = 0;
  85   if (aFlyOutAttr->isInitialized()) {
  86     boost::shared_ptr<GeomAPI_Pnt2d> aFlyOutPnt = aFlyOutAttr->pnt();
  87
  88     boost::shared_ptr<GeomAPI_Lin2d> aFeatureLin =
  89       boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoint_A->x(), aPoint_A->y(),
  90                                                          aPoint_B->x(), aPoint_B->y()));
  91     boost::shared_ptr<GeomAPI_Pnt2d> aProjectedPoint = aFeatureLin->project(aFlyOutPnt);
  92     double aDistance = aFlyOutPnt->distance(aProjectedPoint);
  93     if (!aFeatureLin->isRight(aFlyOutPnt))
  94       aDistance = -aDistance;
  95     aFlyout = aDistance;
  96   }
  97
  98   //Build dimension here
  99   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPoint_A->x(), aPoint_A->y());
 100   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPoint_B->x(), aPoint_B->y());
 101
 102   // value calculation
 103   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
 104     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
 105   double aValue = aValueAttr->value();
 106
 107   Handle(AIS_InteractiveObject) anAIS = thePrevious;
 108   if (anAIS.IsNull())
 109   {
 110     Handle(AIS_LengthDimension) aDimAIS =
 111       new AIS_LengthDimension(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 112     aDimAIS->SetCustomValue(aValue);
 113
 114     Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
 115     anAspect->MakeArrows3d (Standard_False);
 116     anAspect->MakeText3d(false);
 117     anAspect->TextAspect()->SetHeight(CONSTRAINT_TEXT_HEIGHT);
 118     anAspect->MakeTextShaded(false);
 119     aDimAIS->DimensionAspect()->MakeUnitsDisplayed(false);
 120     aDimAIS->SetDimensionAspect (anAspect);
 121     aDimAIS->SetFlyout(aFlyout);
 122     aDimAIS->SetSelToleranceForText2d(CONSTRAINT_TEXT_SELECTION_TOLERANCE);
 123
 124     anAIS = aDimAIS;
 125   }
 126   else {
 127     // update presentation
 128     Handle(AIS_LengthDimension) aDimAIS = Handle(AIS_LengthDimension)::DownCast(anAIS);
 129     if (!aDimAIS.IsNull()) {
 130       aDimAIS->SetMeasuredGeometry(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 131       aDimAIS->SetCustomValue(aValue);
 132       aDimAIS->SetFlyout(aFlyout);
 133
 134       aDimAIS->Redisplay(Standard_True);
 135     }
 136   }
 137   return anAIS;
 138 }
 139
 140 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 141 {
 142   boost::shared_ptr<ModelAPI_Data> aData = data();
 143   if (!aData->isValid())
 144     return;
 145
 146   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 147         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
 148   aPoint1->setValue(aPoint1->x() + theDeltaX, aPoint1->y() + theDeltaY);
 149 }
 150
 151 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 152                                                        const std::string& theAttribute)
 153 {
 154   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 155
 156   if (!theData)
 157     return aPointAttr;
 158
 159   FeaturePtr aFeature;
 160   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 161     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 162   if (anAttr)
 163     aFeature = anAttr->feature();
 164
 165   if (aFeature && aFeature->getKind() == SKETCH_POINT_KIND)
 166     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 167                                            (aFeature->data()->attribute(POINT_ATTR_COORD));
 168   return aPointAttr;
 169 }
 170