src/SketcherPrs/SketcherPrs_LengthDimension.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        SketcherPrs_LengthDimension.cpp
   4 // Created:     27 March 2015
   5 // Author:      Vitaly SMETANNIKOV
   6
   7 #include "SketcherPrs_LengthDimension.h"
   8 #include "SketcherPrs_Tools.h"
   9
  10 #include <SketchPlugin_Constraint.h>
  11 #include <SketchPlugin_ConstraintLength.h>
  12 #include <SketchPlugin_ConstraintDistance.h>
  13 #include <SketchPlugin_Line.h>
  14 #include <SketchPlugin_Point.h>
  15 #include <SketchPlugin_Circle.h>
  16
  17 #include <GeomDataAPI_Point2D.h>
  18 #include <GeomAPI_Pnt.h>
  19 #include <GeomAPI_XYZ.h>
  20 #include <GeomAPI_Pnt2d.h>
  21 #include <GeomAPI_Lin2d.h>
  22
  23 #include <ModelAPI_Data.h>
  24 #include <ModelAPI_AttributeDouble.h>
  25
  26 #include <AIS_DisplaySpecialSymbol.hxx>
  27
  28
  29 static const gp_Pnt MyDefStart(0,0,0);
  30 static const gp_Pnt MyDefEnd(1,0,0);
  31 static const gp_Pln MyDefPln(gp_Pnt(0,0,0), gp_Dir(0,0,1));
  32
  33 IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
  34 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
  35
  36 SketcherPrs_LengthDimension::SketcherPrs_LengthDimension(ModelAPI_Feature* theConstraint,
  37                                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  38 : AIS_LengthDimension(MyDefStart, MyDefEnd, MyDefPln),
  39   myConstraint(theConstraint),
  40   myPlane(thePlane),
  41   myAspect(new Prs3d_DimensionAspect())
  42 {
  43   myAspect->MakeArrows3d(false);
  44   myAspect->MakeText3d(false);
  45   myAspect->MakeTextShaded(false);
  46   myAspect->MakeUnitsDisplayed(false);
  47   myAspect->TextAspect()->SetHeight(SketcherPrs_Tools::getDefaultTextHeight());
  48   myAspect->ArrowAspect()->SetLength(SketcherPrs_Tools::getArrowSize());
  49
  50   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
  51   SetDimensionAspect(myAspect);
  52 }
  53
  54 void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
  55                                  const Handle(Prs3d_Presentation)& thePresentation,
  56                                  const Standard_Integer theMode)
  57 {
  58   gp_Pnt aPnt1, aPnt2;
  59   if (!getPoints(aPnt1, aPnt2))
  60     return;
  61
  62   // compute flyout distance
  63   SetFlyout(SketcherPrs_Tools::getFlyoutDistance(myConstraint));
  64   SetMeasuredGeometry(aPnt1, aPnt2, myPlane->impl<gp_Ax3>());
  65
  66   // Update variable aspect parameters (depending on viewer scale)
  67   double anArrowLength = myAspect->ArrowAspect()->Length();
  68    // This is not realy correct way to get viewer scale.
  69   double aViewerScale = (double) SketcherPrs_Tools::getDefaultArrowSize() / anArrowLength;
  70   double aDimensionValue = GetValue();
  71   double aTextSize = 0.0;
  72   GetValueString(aTextSize);
  73
  74   if(aTextSize > ((aDimensionValue - 3 * SketcherPrs_Tools::getArrowSize()) * aViewerScale)) {
  75     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Left);
  76     myAspect->SetArrowOrientation(Prs3d_DAO_External);
  77     myAspect->SetExtensionSize(aTextSize / aViewerScale - SketcherPrs_Tools::getArrowSize() / 2.0);
  78   } else {
  79     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Center);
  80     myAspect->SetArrowOrientation(Prs3d_DAO_Internal);
  81   }
  82   myAspect->SetArrowTailSize(myAspect->ArrowAspect()->Length());
  83
  84   // The value of vertical aligment is sometimes changed
  85   myAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
  86
  87   AttributeDoublePtr aValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
  88   SketcherPrs_Tools::setDisplaySpecialSymbol(this, aValue->usedParameters().size() > 0);
  89
  90   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
  91 }
  92
  93 bool SketcherPrs_LengthDimension::getPoints(gp_Pnt& thePnt1, gp_Pnt& thePnt2)
  94 {
  95   DataPtr aData = myConstraint->data();
  96   if (myConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
  97     // The constraint is length
  98     std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
  99       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 100       (aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
 101     if (!anAttr)
 102       return false;
 103
 104     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 105     if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 106       return false;
 107
 108     // Get geometry of the object
 109     DataPtr aLineData = aFeature->data();
 110     std::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
 111       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 112       (aLineData->attribute(SketchPlugin_Line::START_ID()));
 113     std::shared_ptr<GeomDataAPI_Point2D> aEndPoint =
 114       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 115       (aLineData->attribute(SketchPlugin_Line::END_ID()));
 116     thePnt1 = myPlane->to3D(aStartPoint->x(), aStartPoint->y())->impl<gp_Pnt>();
 117     thePnt2 = myPlane->to3D(aEndPoint->x(), aEndPoint->y())->impl<gp_Pnt>();
 118     return true;
 119
 120   } else if (myConstraint->getKind() == SketchPlugin_ConstraintDistance::ID()) {
 121     // The constraint is distance
 122     std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = SketcherPrs_Tools::getFeaturePoint(
 123         aData, SketchPlugin_Constraint::ENTITY_A(), myPlane);
 124     std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = SketcherPrs_Tools::getFeaturePoint(
 125         aData, SketchPlugin_Constraint::ENTITY_B(), myPlane);
 126
 127     std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
 128     std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
 129     if (aPoint_A && aPoint_B) {
 130       // Both objects are points
 131       aPnt_A = aPoint_A->pnt();
 132       aPnt_B = aPoint_B->pnt();
 133     } else if (!aPoint_A && aPoint_B) {
 134       // First object is line
 135       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 136           aData, SketchPlugin_Constraint::ENTITY_A());
 137       if (aLine) {
 138         aPnt_B = aPoint_B->pnt();
 139         aPnt_A = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_B);
 140       }
 141     } else if (aPoint_A && !aPoint_B) {
 142       // Second object is line
 143       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 144           aData, SketchPlugin_Constraint::ENTITY_B());
 145       if (aLine) {
 146         aPnt_A = aPoint_A->pnt();
 147         aPnt_B = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_A);
 148       }
 149     }
 150     if (!aPnt_A || !aPnt_B) // Objects not found
 151       return false;
 152
 153     // Get points from these objects
 154     std::shared_ptr<GeomAPI_Pnt> aPoint1 = myPlane->to3D(aPnt_A->x(), aPnt_A->y());
 155     std::shared_ptr<GeomAPI_Pnt> aPoint2 = myPlane->to3D(aPnt_B->x(), aPnt_B->y());
 156     thePnt1 = aPoint1->impl<gp_Pnt>();
 157     thePnt2 = aPoint2->impl<gp_Pnt>();
 158     return true;
 159   }
 160   return false;
 161 }
 162
 163
 164
 165 void SketcherPrs_LengthDimension::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
 166                                                    const Standard_Integer theMode)
 167 {
 168   // Map the application selection modes to standard ones
 169   Standard_Integer aMode;
 170   switch (theMode) {
 171   case 0: // we should use selection of all objects
 172     aMode = 0;
 173     break;
 174   case SketcherPrs_Tools::Sel_Dimension_All:
 175     aMode = 0;
 176     break;
 177   case SketcherPrs_Tools::Sel_Dimension_Line:
 178     aMode = 1;
 179     break;
 180   case SketcherPrs_Tools::Sel_Dimension_Text:
 181     aMode = 2;
 182     break;
 183   default: {
 184     // there are own selection modes, so the others should be ignored
 185     // otherwise, the text selection appears in the viewer
 186     return;
 187   }
 188   }
 189   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
 190   AIS_LengthDimension::ComputeSelection(aSelection, aMode);
 191 }