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 anAttribute =
  47       boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  48
  49   if (anAttr_A && anAttr_B && anAttribute->value() == 0)
  50   {
  51     FeaturePtr aFeature_A = anAttr_A->feature();
  52     FeaturePtr aFeature_B = anAttr_B->feature();
  53
  54     double aValue = 40; // TODO
  55     anAttribute->setValue(aValue);
  56   }
  57 }
  58
  59 Handle(AIS_InteractiveObject) SketchPlugin_ConstraintDistance::getAISShape(
  60   Handle_AIS_InteractiveObject thePrevious)
  61 {
  62   if (!sketch())
  63     return thePrevious;
  64
  65   boost::shared_ptr<GeomAPI_Pln> aPlane = sketch()->plane();
  66
  67   DataPtr aData = data();
  68   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_A = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_A);
  69   boost::shared_ptr<GeomDataAPI_Point2D> aPoint_B = getFeaturePoint(aData, CONSTRAINT_ATTR_ENTITY_B);
  70   if (!aPoint_A || !aPoint_B)
  71     return thePrevious;
  72
  73   // fly out calculation
  74   boost::shared_ptr<GeomDataAPI_Point2D> aFlyOutAttr =
  75     boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(CONSTRAINT_ATTR_FLYOUT_VALUE_PNT));
  76   boost::shared_ptr<GeomAPI_Pnt2d> aFlyOutPnt = aFlyOutAttr->pnt();
  77
  78   boost::shared_ptr<GeomAPI_Lin2d> aFeatureLin =
  79     boost::shared_ptr<GeomAPI_Lin2d>(new GeomAPI_Lin2d(aPoint_A->x(), aPoint_A->y(),
  80                                                        aPoint_B->x(), aPoint_B->y()));
  81   boost::shared_ptr<GeomAPI_Pnt2d> aResult = aFeatureLin->project(aFlyOutPnt);
  82   double aDistance = aFlyOutPnt->distance(aResult);
  83
  84   if (!aFeatureLin->isRight(aFlyOutPnt))
  85     aDistance = -aDistance;
  86   double aFlyout = aDistance;
  87
  88   //Build dimension here
  89   boost::shared_ptr<GeomAPI_Pnt> aPoint1 = sketch()->to3D(aPoint_A->x(), aPoint_A->y());
  90   boost::shared_ptr<GeomAPI_Pnt> aPoint2 = sketch()->to3D(aPoint_B->x(), aPoint_B->y());
  91   if (aFlyout < 0)
  92     aPoint1.swap(aPoint2);
  93
  94   // value calculation
  95   boost::shared_ptr<ModelAPI_AttributeDouble> aValueAttr =
  96     boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(aData->attribute(CONSTRAINT_ATTR_VALUE));
  97   double aValue = aValueAttr->value();
  98   if (aValue == 0) { // TODO! the default value
  99     aValue = aPoint1->distance(aPoint2);
 100   }
 101
 102   Handle(AIS_InteractiveObject) anAIS = thePrevious;
 103   if (anAIS.IsNull())
 104   {
 105     Handle(AIS_LengthDimension) aDimAIS =
 106       new AIS_LengthDimension(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 107     aDimAIS->SetCustomValue(aValue);
 108
 109     Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
 110     anAspect->MakeArrows3d (Standard_False);
 111     anAspect->MakeText3d(false);
 112     anAspect->TextAspect()->SetHeight(CONSTRAINT_TEXT_HEIGHT);
 113     anAspect->MakeTextShaded(false);
 114     aDimAIS->DimensionAspect()->MakeUnitsDisplayed(false);
 115     aDimAIS->SetDimensionAspect (anAspect);
 116     aDimAIS->SetFlyout(aFlyout);
 117     aDimAIS->SetSelToleranceForText2d(CONSTRAINT_TEXT_SELECTION_TOLERANCE);
 118
 119     anAIS = aDimAIS;
 120   }
 121   else {
 122     // update presentation
 123     Handle(AIS_LengthDimension) aDimAIS = Handle(AIS_LengthDimension)::DownCast(anAIS);
 124     if (!aDimAIS.IsNull()) {
 125       aDimAIS->SetMeasuredGeometry(aPoint1->impl<gp_Pnt>(), aPoint2->impl<gp_Pnt>(), aPlane->impl<gp_Pln>());
 126       aDimAIS->SetCustomValue(aValue);
 127       aDimAIS->SetFlyout(aFlyout);
 128
 129       aDimAIS->Redisplay(Standard_True);
 130     }
 131   }
 132   return anAIS;
 133 }
 134
 135
 136 boost::shared_ptr<GeomDataAPI_Point2D> getFeaturePoint(DataPtr theData,
 137                                                        const std::string& theAttribute)
 138 {
 139   boost::shared_ptr<GeomDataAPI_Point2D> aPointAttr;
 140
 141   if (!theData)
 142     return aPointAttr;
 143
 144   FeaturePtr aFeature;
 145   boost::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 146     boost::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(theData->attribute(theAttribute));
 147   if (anAttr)
 148     aFeature = anAttr->feature();
 149
 150   if (aFeature && aFeature->getKind() == SKETCH_POINT_KIND)
 151     aPointAttr = boost::dynamic_pointer_cast<GeomDataAPI_Point2D>
 152                                            (aFeature->data()->attribute(POINT_ATTR_COORD));
 153   return aPointAttr;
 154 }
 155