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 && anAttr_B && !anAttr_Value->isInitialized())
  49   {
  50     FeaturePtr aFeature_A = anAttr_A->feature();
  51     FeaturePtr aFeature_B = anAttr_B->feature();
  52
  53     double aValue = 40; // TODO
  54     anAttr_Value->setValue(aValue);
  55   }
  56 }
  57
  58 Handle(AIS_InteractiveObject) SketchPlugin_ConstraintDistance::getAISShape(
  59   Handle_AIS_InteractiveObject thePrevious)
  60 {
  61   if (!sketch())
  62     return thePrevious;
  63
  64   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  65
  66   DataPtr aData = data();
  67   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  68   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  69   if (!aPoint_A || !aPoint_B)
  70     return thePrevious;
  71
  72   // fly out calculation
  73   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
  74     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
  75   boost::shared_ptr<GeomAPI_Pnt2d> aFlyOutPnt = aFlyOutAttr->pnt();
  76
  77   boost::shared_ptr<GeomAPI_Lin2d> aFeatureLin =
  78     boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoint_A->x(), aPoint_A->y(),
  79                                                        aPoint_B->x(), aPoint_B->y()));
  80   boost::shared_ptr<GeomAPI_Pnt2d> aResult = aFeatureLin->project(aFlyOutPnt);
  81   double aDistance = aFlyOutPnt->distance(aResult);
  82
  83   if (!aFeatureLin->isRight(aFlyOutPnt))
  84     aDistance = -aDistance;
  85   double aFlyout = aDistance;
  86
  87   //Build dimension here
  88   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPoint_A->x(), aPoint_A->y());
  89   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPoint_B->x(), aPoint_B->y());
  90   if (aFlyout < 0)
  91     aPoint1.swap(aPoint2);
  92
  93   // value calculation
  94   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
  95     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  96   double aValue = aValueAttr->value();
  97   if (aValue == 0) { // TODO! the default value
  98     aValue = aPoint1->distance(aPoint2);
  99   }
 100
 101   Handle(AIS_InteractiveObject) anAIS = thePrevious;
 102   if (anAIS.IsNull())
 103   {
 104     Handle(AIS_LengthDimension) aDimAIS =
 105       new AIS_LengthDimension(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 106     aDimAIS->SetCustomValue(aValue);
 107
 108     Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
 109     anAspect->MakeArrows3d (Standard_False);
 110     anAspect->MakeText3d(false);
 111     anAspect->TextAspect()->SetHeight(CONSTRAINT_TEXT_HEIGHT);
 112     anAspect->MakeTextShaded(false);
 113     aDimAIS->DimensionAspect()->MakeUnitsDisplayed(false);
 114     aDimAIS->SetDimensionAspect (anAspect);
 115     aDimAIS->SetFlyout(aFlyout);
 116     aDimAIS->SetSelToleranceForText2d(CONSTRAINT_TEXT_SELECTION_TOLERANCE);
 117
 118     anAIS = aDimAIS;
 119   }
 120   else {
 121     // update presentation
 122     Handle(AIS_LengthDimension) aDimAIS = Handle(AIS_LengthDimension)::DownCast(anAIS);
 123     if (!aDimAIS.IsNull()) {
 124       aDimAIS->SetMeasuredGeometry(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 125       aDimAIS->SetCustomValue(aValue);
 126       aDimAIS->SetFlyout(aFlyout);
 127
 128       aDimAIS->Redisplay(Standard_True);
 129     }
 130   }
 131   return anAIS;
 132 }
 133
 134
 135 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 136                                                        const std::string& theAttribute)
 137 {
 138   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 139
 140   if (!theData)
 141     return aPointAttr;
 142
 143   FeaturePtr aFeature;
 144   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 145     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 146   if (anAttr)
 147     aFeature = anAttr->feature();
 148
 149   if (aFeature && aFeature->getKind() == SKETCH_POINT_KIND)
 150     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 151                                            (aFeature->data()->attribute(POINT_ATTR_COORD));
 152   return aPointAttr;
 153 }
 154