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 <Events_Error.h>
  18
  19 #include <GeomDataAPI_Point2D.h>
  20 #include <GeomAPI_Pnt.h>
  21 #include <GeomAPI_XYZ.h>
  22 #include <GeomAPI_Pnt2d.h>
  23 #include <GeomAPI_Lin2d.h>
  24
  25 #include <ModelAPI_Data.h>
  26 #include <ModelAPI_AttributeDouble.h>
  27
  28 #include <AIS_DisplaySpecialSymbol.hxx>
  29
  30
  31 static const gp_Pnt MyDefStart(0,0,0);
  32 static const gp_Pnt MyDefEnd(1,0,0);
  33 static const gp_Pln MyDefPln(gp_Pnt(0,0,0), gp_Dir(0,0,1));
  34
  35 IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
  36 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
  37
  38 SketcherPrs_LengthDimension::SketcherPrs_LengthDimension(ModelAPI_Feature* theConstraint,
  39                                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  40 : AIS_LengthDimension(MyDefStart, MyDefEnd, MyDefPln),
  41   myConstraint(theConstraint),
  42   myPlane(thePlane),
  43   myAspect(new Prs3d_DimensionAspect())
  44 {
  45   myAspect->MakeArrows3d(false);
  46   myAspect->MakeText3d(false);
  47   myAspect->MakeTextShaded(false);
  48   myAspect->MakeUnitsDisplayed(false);
  49   myAspect->TextAspect()->SetHeight(SketcherPrs_Tools::getDefaultTextHeight());
  50   myAspect->ArrowAspect()->SetLength(SketcherPrs_Tools::getArrowSize());
  51
  52   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
  53   SetDimensionAspect(myAspect);
  54 }
  55
  56 bool SketcherPrs_LengthDimension::IsReadyToDisplay(ModelAPI_Feature* theConstraint,
  57                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  58 {
  59   bool aReadyToDisplay = false;
  60
  61   gp_Pnt aPnt1, aPnt2;
  62   aReadyToDisplay = getPoints(theConstraint, thePlane, aPnt1, aPnt2);
  63
  64   return aReadyToDisplay;
  65 }
  66
  67 void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
  68                                  const Handle(Prs3d_Presentation)& thePresentation,
  69                                  const Standard_Integer theMode)
  70 {
  71   if (!SketcherPrs_LengthDimension::IsReadyToDisplay(myConstraint, myPlane)) {
  72     Events_Error::throwException("An empty AIS presentation: SketcherPrs_LengthDimension");
  73     return;
  74   }
  75
  76   gp_Pnt aPnt1, aPnt2;
  77   getPoints(myConstraint, myPlane, aPnt1, aPnt2);
  78
  79   // compute flyout distance
  80   SetFlyout(SketcherPrs_Tools::getFlyoutDistance(myConstraint));
  81   SetMeasuredGeometry(aPnt1, aPnt2, myPlane->impl<gp_Ax3>());
  82
  83   // Update variable aspect parameters (depending on viewer scale)
  84   double anArrowLength = myAspect->ArrowAspect()->Length();
  85    // This is not realy correct way to get viewer scale.
  86   double aViewerScale = (double) SketcherPrs_Tools::getDefaultArrowSize() / anArrowLength;
  87   double aDimensionValue = GetValue();
  88   double aTextSize = 0.0;
  89   GetValueString(aTextSize);
  90
  91   if(aTextSize > ((aDimensionValue - 3 * SketcherPrs_Tools::getArrowSize()) * aViewerScale)) {
  92     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Left);
  93     myAspect->SetArrowOrientation(Prs3d_DAO_External);
  94     myAspect->SetExtensionSize(aTextSize / aViewerScale - SketcherPrs_Tools::getArrowSize() / 2.0);
  95   } else {
  96     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Center);
  97     myAspect->SetArrowOrientation(Prs3d_DAO_Internal);
  98   }
  99   myAspect->SetArrowTailSize(myAspect->ArrowAspect()->Length());
 100
 101   // The value of vertical aligment is sometimes changed
 102   myAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
 103
 104   AttributeDoublePtr aValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
 105   SketcherPrs_Tools::setDisplaySpecialSymbol(this, aValue->usedParameters().size() > 0);
 106
 107   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
 108 }
 109
 110 bool SketcherPrs_LengthDimension::getPoints(ModelAPI_Feature* theConstraint,
 111                                             const std::shared_ptr<GeomAPI_Ax3>& thePlane,
 112                                             gp_Pnt& thePnt1, gp_Pnt& thePnt2)
 113 {
 114   DataPtr aData = theConstraint->data();
 115   if (theConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
 116     // The constraint is length
 117     std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 118       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 119       (aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
 120     if (!anAttr)
 121       return false;
 122
 123     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 124     if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 125       return false;
 126
 127     // Get geometry of the object
 128     DataPtr aLineData = aFeature->data();
 129     std::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
 130       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 131       (aLineData->attribute(SketchPlugin_Line::START_ID()));
 132     std::shared_ptr<GeomDataAPI_Point2D> aEndPoint =
 133       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 134       (aLineData->attribute(SketchPlugin_Line::END_ID()));
 135     thePnt1 = thePlane->to3D(aStartPoint->x(), aStartPoint->y())->impl<gp_Pnt>();
 136     thePnt2 = thePlane->to3D(aEndPoint->x(), aEndPoint->y())->impl<gp_Pnt>();
 137     return true;
 138
 139   } else if (theConstraint->getKind() == SketchPlugin_ConstraintDistance::ID()) {
 140     // The constraint is distance
 141     std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = SketcherPrs_Tools::getFeaturePoint(
 142         aData, SketchPlugin_Constraint::ENTITY_A(), thePlane);
 143     std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = SketcherPrs_Tools::getFeaturePoint(
 144         aData, SketchPlugin_Constraint::ENTITY_B(), thePlane);
 145
 146     std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
 147     std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
 148     if (aPoint_A && aPoint_B) {
 149       // Both objects are points
 150       aPnt_A = aPoint_A->pnt();
 151       aPnt_B = aPoint_B->pnt();
 152     } else if (!aPoint_A && aPoint_B) {
 153       // First object is line
 154       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 155           aData, SketchPlugin_Constraint::ENTITY_A());
 156       if (aLine) {
 157         aPnt_B = aPoint_B->pnt();
 158         aPnt_A = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_B);
 159       }
 160     } else if (aPoint_A && !aPoint_B) {
 161       // Second object is line
 162       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 163           aData, SketchPlugin_Constraint::ENTITY_B());
 164       if (aLine) {
 165         aPnt_A = aPoint_A->pnt();
 166         aPnt_B = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_A);
 167       }
 168     }
 169     if (!aPnt_A || !aPnt_B) // Objects not found
 170       return false;
 171
 172     // Get points from these object
 173     std::shared_ptr<GeomAPI_Pnt> aPoint1 = thePlane->to3D(aPnt_A->x(), aPnt_A->y());
 174     std::shared_ptr<GeomAPI_Pnt> aPoint2 = thePlane->to3D(aPnt_B->x(), aPnt_B->y());
 175     thePnt1 = aPoint1->impl<gp_Pnt>();
 176     thePnt2 = aPoint2->impl<gp_Pnt>();
 177     return true;
 178   }
 179   return false;
 180 }
 181
 182
 183
 184 void SketcherPrs_LengthDimension::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
 185                                                    const Standard_Integer theMode)
 186 {
 187   // Map the application selection modes to standard ones
 188   Standard_Integer aMode;
 189   switch (theMode) {
 190   case 0: // we should use selection of all objects
 191     aMode = 0;
 192     break;
 193   case SketcherPrs_Tools::Sel_Dimension_All:
 194     aMode = 0;
 195     break;
 196   case SketcherPrs_Tools::Sel_Dimension_Line:
 197     aMode = 1;
 198     break;
 199   case SketcherPrs_Tools::Sel_Dimension_Text:
 200     aMode = 2;
 201     break;
 202   default: {
 203     // there are own selection modes, so the others should be ignored
 204     // otherwise, the text selection appears in the viewer
 205     return;
 206   }
 207   }
 208   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
 209   AIS_LengthDimension::ComputeSelection(aSelection, aMode);
 210 }