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<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  42   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  43   if (aPoint_A && aPoint_B) {
  44     AttributeDoublePtr anAttr_Value =
  45       boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  46
  47     if (!anAttr_Value->isInitialized()) {
  48       anAttr_Value->setValue(aPoint_A->pnt()->distance(aPoint_B->pnt()));
  49     }
  50   }
  51 }
  52
  53 Handle(AIS_InteractiveObject) SketchPlugin_ConstraintDistance::getAISShape(
  54   Handle_AIS_InteractiveObject thePrevious)
  55 {
  56   if (!sketch())
  57     return thePrevious;
  58
  59   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  60
  61   DataPtr aData = data();
  62   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  63   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  64   if (!aPoint_A || !aPoint_B)
  65     return thePrevious;
  66
  67   // fly out calculation
  68   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
  69     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
  70   double aFlyout = 0;
  71   if (aFlyOutAttr->isInitialized()) {
  72     boost::shared_ptr<GeomAPI_Pnt2d> aFlyOutPnt = aFlyOutAttr->pnt();
  73
  74     boost::shared_ptr<GeomAPI_Lin2d> aFeatureLin =
  75       boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoint_A->x(), aPoint_A->y(),
  76                                                          aPoint_B->x(), aPoint_B->y()));
  77     boost::shared_ptr<GeomAPI_Pnt2d> aProjectedPoint = aFeatureLin->project(aFlyOutPnt);
  78     double aDistance = aFlyOutPnt->distance(aProjectedPoint);
  79     if (!aFeatureLin->isRight(aFlyOutPnt))
  80       aDistance = -aDistance;
  81     aFlyout = aDistance;
  82   }
  83
  84   //Build dimension here
  85   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPoint_A->x(), aPoint_A->y());
  86   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPoint_B->x(), aPoint_B->y());
  87
  88   // value calculation
  89   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
  90     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  91   double aValue = aValueAttr->value();
  92
  93   Handle(AIS_InteractiveObject) anAIS = thePrevious;
  94   if (anAIS.IsNull())
  95   {
  96     Handle(AIS_LengthDimension) aDimAIS =
  97       new AIS_LengthDimension(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
  98     aDimAIS->SetCustomValue(aValue);
  99
 100     Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
 101     anAspect->MakeArrows3d (Standard_False);
 102     anAspect->MakeText3d(false);
 103     anAspect->TextAspect()->SetHeight(CONSTRAINT_TEXT_HEIGHT);
 104     anAspect->MakeTextShaded(false);
 105     aDimAIS->DimensionAspect()->MakeUnitsDisplayed(false);
 106     aDimAIS->SetDimensionAspect (anAspect);
 107     aDimAIS->SetFlyout(aFlyout);
 108     aDimAIS->SetSelToleranceForText2d(CONSTRAINT_TEXT_SELECTION_TOLERANCE);
 109
 110     anAIS = aDimAIS;
 111   }
 112   else {
 113     // update presentation
 114     Handle(AIS_LengthDimension) aDimAIS = Handle(AIS_LengthDimension)::DownCast(anAIS);
 115     if (!aDimAIS.IsNull()) {
 116       aDimAIS->SetMeasuredGeometry(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 117       aDimAIS->SetCustomValue(aValue);
 118       aDimAIS->SetFlyout(aFlyout);
 119
 120       aDimAIS->Redisplay(Standard_True);
 121     }
 122   }
 123   return anAIS;
 124 }
 125
 126 void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
 127 {
 128   boost::shared_ptr<ModelAPI_Data> aData = data();
 129   if (!aData->isValid())
 130     return;
 131
 132   boost::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 133         boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
 134   aPoint1->setValue(aPoint1->x() + theDeltaX, aPoint1->y() + theDeltaY);
 135 }
 136
 137 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 138                                                        const std::string& theAttribute)
 139 {
 140   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 141
 142   if (!theData)
 143     return aPointAttr;
 144
 145   FeaturePtr aFeature;
 146   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 147     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 148   if (anAttr)
 149     aFeature = anAttr->feature();
 150
 151   if (aFeature && aFeature->getKind() == SKETCH_POINT_KIND)
 152     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 153                                            (aFeature->data()->attribute(POINT_ATTR_COORD));
 154   else {
 155     if (anAttr->attr())
 156       aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(anAttr->attr());
 157   }
 158   return aPointAttr;
 159 }