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 }
  40
  41 Handle(AIS_InteractiveObject) SketchPlugin_ConstraintDistance::getAISShape(
  42   Handle_AIS_InteractiveObject thePrevious)
  43 {
  44   if (!sketch())
  45     return thePrevious;
  46
  47   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  48
  49   DataPtr aData = data();
  50   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  51   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  52   if (!aPoint_A || !aPoint_B)
  53     return thePrevious;
  54
  55   // fly out calculation
  56   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
  57     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
  58   boost::shared_ptr<GeomAPI_Pnt2d> aFlyOutPnt = aFlyOutAttr->pnt();
  59
  60   boost::shared_ptr<GeomAPI_Lin2d> aFeatureLin =
  61     boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoint_A->x(), aPoint_A->y(),
  62                                                        aPoint_B->x(), aPoint_B->y()));
  63   boost::shared_ptr<GeomAPI_Pnt2d> aResult = aFeatureLin->project(aFlyOutPnt);
  64   double aDistance = aFlyOutPnt->distance(aResult);
  65
  66   if (!aFeatureLin->isRight(aFlyOutPnt))
  67     aDistance = -aDistance;
  68   double aFlyout = aDistance;
  69
  70   //Build dimension here
  71   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPoint_A->x(), aPoint_A->y());
  72   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPoint_B->x(), aPoint_B->y());
  73   if (aFlyout < 0)
  74     aPoint1.swap(aPoint2);
  75
  76   // value calculation
  77   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
  78     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  79   double aValue = aValueAttr->value();
  80   if (aValue == 0) { // TODO! the default value
  81     aValue = aPoint1->distance(aPoint2);
  82   }
  83
  84   Handle(AIS_InteractiveObject) anAIS = thePrevious;
  85   if (anAIS.IsNull())
  86   {
  87     Handle(AIS_LengthDimension) aDimAIS =
  88       new AIS_LengthDimension(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
  89     aDimAIS->SetCustomValue(aValue);
  90
  91     Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
  92     anAspect->MakeArrows3d (Standard_False);
  93     anAspect->MakeText3d(false);
  94     anAspect->TextAspect()->SetHeight(CONSTRAINT_TEXT_HEIGHT);
  95     anAspect->MakeTextShaded(false);
  96     aDimAIS->DimensionAspect()->MakeUnitsDisplayed(false);
  97     aDimAIS->SetDimensionAspect (anAspect);
  98     aDimAIS->SetFlyout(aFlyout);
  99     aDimAIS->SetSelToleranceForText2d(CONSTRAINT_TEXT_SELECTION_TOLERANCE);
 100
 101     anAIS = aDimAIS;
 102   }
 103   else {
 104     // update presentation
 105     Handle(AIS_LengthDimension) aDimAIS = Handle(AIS_LengthDimension)::DownCast(anAIS);
 106     if (!aDimAIS.IsNull()) {
 107       aDimAIS->SetMeasuredGeometry(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 108       aDimAIS->SetCustomValue(aValue);
 109       aDimAIS->SetFlyout(aFlyout);
 110
 111       aDimAIS->Redisplay(Standard_True);
 112     }
 113   }
 114   return anAIS;
 115 }
 116
 117
 118 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 119                                                        const std::string& theAttribute)
 120 {
 121   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 122
 123   if (!theData)
 124     return aPointAttr;
 125
 126   FeaturePtr aFeature;
 127   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 128     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 129   if (anAttr)
 130     aFeature = anAttr->feature();
 131
 132   if (aFeature && aFeature->getKind() == SKETCH_POINT_KIND)
 133     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 134                                            (aFeature->data()->attribute(POINT_ATTR_COORD));
 135   return aPointAttr;
 136 }
 137