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 // it is not possible to use 0x2211 as summ symbol because it is not supported by
  34 // debian Linux platform
  35 static const Standard_ExtCharacter MySummSymbol(0x03A3);
  36
  37 IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
  38 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
  39
  40 SketcherPrs_LengthDimension::SketcherPrs_LengthDimension(ModelAPI_Feature* theConstraint,
  41                                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  42 : AIS_LengthDimension(MyDefStart, MyDefEnd, MyDefPln),
  43   myConstraint(theConstraint),
  44   myPlane(thePlane),
  45   myAspect(new Prs3d_DimensionAspect())
  46 {
  47   myAspect->MakeArrows3d(false);
  48   myAspect->MakeText3d(false);
  49   myAspect->MakeTextShaded(false);
  50   myAspect->MakeUnitsDisplayed(false);
  51   myAspect->TextAspect()->SetHeight(SketcherPrs_Tools::getDefaultTextHeight());
  52   myAspect->ArrowAspect()->SetLength(SketcherPrs_Tools::getArrowSize());
  53
  54   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
  55   SetDimensionAspect(myAspect);
  56 }
  57
  58 void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
  59                                  const Handle(Prs3d_Presentation)& thePresentation,
  60                                  const Standard_Integer theMode)
  61 {
  62   gp_Pnt aPnt1, aPnt2;
  63   if (!getPoints(aPnt1, aPnt2))
  64     return;
  65
  66   // compute flyout distance
  67   SetFlyout(SketcherPrs_Tools::getFlyoutDistance(myConstraint));
  68   SetMeasuredGeometry(aPnt1, aPnt2, myPlane->impl<gp_Ax3>());
  69
  70   // Update variable aspect parameters (depending on viewer scale)
  71   double anArrowLength = myAspect->ArrowAspect()->Length();
  72    // This is not realy correct way to get viewer scale.
  73   double aViewerScale = (double) SketcherPrs_Tools::getDefaultArrowSize() / anArrowLength;
  74   double aDimensionValue = GetValue();
  75   double aTextSize = 0.0;
  76   GetValueString(aTextSize);
  77
  78   if(aTextSize > ((aDimensionValue - 3 * SketcherPrs_Tools::getArrowSize()) * aViewerScale)) {
  79     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Left);
  80     myAspect->SetArrowOrientation(Prs3d_DAO_External);
  81     myAspect->SetExtensionSize(aTextSize / aViewerScale - SketcherPrs_Tools::getArrowSize() / 2.0);
  82   } else {
  83     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Center);
  84     myAspect->SetArrowOrientation(Prs3d_DAO_Internal);
  85   }
  86   myAspect->SetArrowTailSize(myAspect->ArrowAspect()->Length());
  87
  88   // The value of vertical aligment is sometimes changed
  89   myAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
  90
  91   AttributeDoublePtr aValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
  92   std::set<std::string> aParams = aValue->usedParameters();
  93   if (aParams.size() > 0) {
  94     SetSpecialSymbol(MySummSymbol);
  95     SetDisplaySpecialSymbol(AIS_DSS_Before);
  96   }
  97
  98   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
  99 }
 100
 101 bool SketcherPrs_LengthDimension::getPoints(gp_Pnt& thePnt1, gp_Pnt& thePnt2)
 102 {
 103   DataPtr aData = myConstraint->data();
 104   if (myConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
 105     // The constraint is length
 106     std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 107       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 108       (aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
 109     if (!anAttr)
 110       return false;
 111
 112     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 113     if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 114       return false;
 115
 116     // Get geometry of the object
 117     DataPtr aLineData = aFeature->data();
 118     std::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
 119       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 120       (aLineData->attribute(SketchPlugin_Line::START_ID()));
 121     std::shared_ptr<GeomDataAPI_Point2D> aEndPoint =
 122       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 123       (aLineData->attribute(SketchPlugin_Line::END_ID()));
 124     thePnt1 = myPlane->to3D(aStartPoint->x(), aStartPoint->y())->impl<gp_Pnt>();
 125     thePnt2 = myPlane->to3D(aEndPoint->x(), aEndPoint->y())->impl<gp_Pnt>();
 126     return true;
 127
 128   } else if (myConstraint->getKind() == SketchPlugin_ConstraintDistance::ID()) {
 129     // The constraint is distance
 130     std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = SketcherPrs_Tools::getFeaturePoint(
 131         aData, SketchPlugin_Constraint::ENTITY_A(), myPlane);
 132     std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = SketcherPrs_Tools::getFeaturePoint(
 133         aData, SketchPlugin_Constraint::ENTITY_B(), myPlane);
 134
 135     std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
 136     std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
 137     if (aPoint_A && aPoint_B) {
 138       // Both objects are points
 139       aPnt_A = aPoint_A->pnt();
 140       aPnt_B = aPoint_B->pnt();
 141     } else if (!aPoint_A && aPoint_B) {
 142       // First object is line
 143       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 144           aData, SketchPlugin_Constraint::ENTITY_A());
 145       if (aLine) {
 146         aPnt_B = aPoint_B->pnt();
 147         aPnt_A = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_B);
 148       }
 149     } else if (aPoint_A && !aPoint_B) {
 150       // Second object is line
 151       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 152           aData, SketchPlugin_Constraint::ENTITY_B());
 153       if (aLine) {
 154         aPnt_A = aPoint_A->pnt();
 155         aPnt_B = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_A);
 156       }
 157     }
 158     if (!aPnt_A || !aPnt_B) // Objects not found
 159       return false;
 160
 161     // Get points from these objects
 162     std::shared_ptr<GeomAPI_Pnt> aPoint1 = myPlane->to3D(aPnt_A->x(), aPnt_A->y());
 163     std::shared_ptr<GeomAPI_Pnt> aPoint2 = myPlane->to3D(aPnt_B->x(), aPnt_B->y());
 164     thePnt1 = aPoint1->impl<gp_Pnt>();
 165     thePnt2 = aPoint2->impl<gp_Pnt>();
 166     return true;
 167   }
 168   return false;
 169 }
 170
 171
 172
 173 void SketcherPrs_LengthDimension::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
 174                                                    const Standard_Integer theMode)
 175 {
 176   // Map the application selection modes to standard ones
 177   Standard_Integer aMode;
 178   switch (theMode) {
 179   case 0: // we should use selection of all objects
 180     aMode = 0;
 181     break;
 182   case SketcherPrs_Tools::Sel_Dimension_All:
 183     aMode = 0;
 184     break;
 185   case SketcherPrs_Tools::Sel_Dimension_Line:
 186     aMode = 1;
 187     break;
 188   case SketcherPrs_Tools::Sel_Dimension_Text:
 189     aMode = 2;
 190     break;
 191   default: {
 192     // there are own selection modes, so the others should be ignored
 193     // otherwise, the text selection appears in the viewer
 194     return;
 195   }
 196   }
 197   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
 198   AIS_LengthDimension::ComputeSelection(aSelection, aMode);
 199 }