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 #include "SketcherPrs_Tools.h"
  10 #include "SketcherPrs_DimensionStyleListener.h"
  11
  12 #include <SketchPlugin_Constraint.h>
  13 #include <SketchPlugin_ConstraintLength.h>
  14 #include <SketchPlugin_ConstraintDistance.h>
  15 #include <SketchPlugin_Line.h>
  16 #include <SketchPlugin_Point.h>
  17 #include <SketchPlugin_Circle.h>
  18
  19 #include <Events_Error.h>
  20 #include <Events_Loop.h>
  21
  22 #include <GeomDataAPI_Point2D.h>
  23 #include <GeomAPI_Pnt.h>
  24 #include <GeomAPI_XYZ.h>
  25 #include <GeomAPI_Pnt2d.h>
  26 #include <GeomAPI_Lin2d.h>
  27
  28 #include <ModelAPI_Data.h>
  29 #include <ModelAPI_AttributeDouble.h>
  30
  31 #include <AIS_DisplaySpecialSymbol.hxx>
  32
  33
  34 static const gp_Pnt MyDefStart(0,0,0);
  35 static const gp_Pnt MyDefEnd(1,0,0);
  36 static const gp_Pln MyDefPln(gp_Pnt(0,0,0), gp_Dir(0,0,1));
  37
  38 IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
  39 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
  40
  41 SketcherPrs_LengthDimension::SketcherPrs_LengthDimension(ModelAPI_Feature* theConstraint,
  42                                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  43 : AIS_LengthDimension(MyDefStart, MyDefEnd, MyDefPln),
  44   myConstraint(theConstraint),
  45   myPlane(thePlane),
  46   myAspect(new Prs3d_DimensionAspect())
  47 {
  48   myAspect->MakeArrows3d(false);
  49   myAspect->MakeText3d(false);
  50   myAspect->MakeTextShaded(false);
  51   myAspect->MakeUnitsDisplayed(false);
  52   myAspect->TextAspect()->SetHeight(SketcherPrs_Tools::getDefaultTextHeight());
  53   myAspect->ArrowAspect()->SetLength(SketcherPrs_Tools::getArrowSize());
  54
  55   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
  56   SetDimensionAspect(myAspect);
  57
  58   myStyleListener = new SketcherPrs_DimensionStyleListener();
  59 }
  60
  61 SketcherPrs_LengthDimension::~SketcherPrs_LengthDimension()
  62 {
  63   delete myStyleListener;
  64 }
  65
  66 bool SketcherPrs_LengthDimension::IsReadyToDisplay(ModelAPI_Feature* theConstraint,
  67                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
  68 {
  69   bool aReadyToDisplay = false;
  70
  71   gp_Pnt aPnt1, aPnt2;
  72   aReadyToDisplay = getPoints(theConstraint, thePlane, aPnt1, aPnt2);
  73
  74   return aReadyToDisplay;
  75 }
  76
  77 void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
  78                                  const Handle(Prs3d_Presentation)& thePresentation,
  79                                  const Standard_Integer theMode)
  80 {
  81   if (!SketcherPrs_LengthDimension::IsReadyToDisplay(myConstraint, myPlane)) {
  82     Events_Error::throwException("An empty AIS presentation: SketcherPrs_LengthDimension");
  83     return;
  84   }
  85
  86   gp_Pnt aPnt1, aPnt2;
  87   getPoints(myConstraint, myPlane, aPnt1, aPnt2);
  88
  89   // compute flyout distance
  90   SetFlyout(SketcherPrs_Tools::getFlyoutDistance(myConstraint));
  91   SetMeasuredGeometry(aPnt1, aPnt2, myPlane->impl<gp_Ax3>());
  92
  93   // Update variable aspect parameters (depending on viewer scale)
  94   double anArrowLength = myAspect->ArrowAspect()->Length();
  95    // This is not realy correct way to get viewer scale.
  96   double aViewerScale = (double) SketcherPrs_Tools::getDefaultArrowSize() / anArrowLength;
  97   double aDimensionValue = GetValue();
  98   double aTextSize = 0.0;
  99   GetValueString(aTextSize);
 100
 101   if(aTextSize > ((aDimensionValue - 3 * SketcherPrs_Tools::getArrowSize()) * aViewerScale)) {
 102     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Left);
 103     myAspect->SetArrowOrientation(Prs3d_DAO_External);
 104     myAspect->SetExtensionSize(aTextSize / aViewerScale - SketcherPrs_Tools::getArrowSize() / 2.0);
 105   } else {
 106     myAspect->SetTextHorizontalPosition(Prs3d_DTHP_Center);
 107     myAspect->SetArrowOrientation(Prs3d_DAO_Internal);
 108   }
 109   myAspect->SetArrowTailSize(myAspect->ArrowAspect()->Length());
 110
 111   // The value of vertical aligment is sometimes changed
 112   myAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
 113
 114   AttributeDoublePtr aValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
 115
 116   myStyleListener->updateDimensions(this, aValue);
 117
 118   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
 119 }
 120
 121 bool SketcherPrs_LengthDimension::getPoints(ModelAPI_Feature* theConstraint,
 122                                             const std::shared_ptr<GeomAPI_Ax3>& thePlane,
 123                                             gp_Pnt& thePnt1, gp_Pnt& thePnt2)
 124 {
 125   DataPtr aData = theConstraint->data();
 126   if (theConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
 127     // The constraint is length
 128     std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
 129       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
 130       (aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
 131     if (!anAttr)
 132       return false;
 133
 134     FeaturePtr aFeature = ModelAPI_Feature::feature(anAttr->object());
 135     if (!aFeature || aFeature->getKind() != SketchPlugin_Line::ID())
 136       return false;
 137
 138     // Get geometry of the object
 139     DataPtr aLineData = aFeature->data();
 140     std::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
 141       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 142       (aLineData->attribute(SketchPlugin_Line::START_ID()));
 143     std::shared_ptr<GeomDataAPI_Point2D> aEndPoint =
 144       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 145       (aLineData->attribute(SketchPlugin_Line::END_ID()));
 146     thePnt1 = thePlane->to3D(aStartPoint->x(), aStartPoint->y())->impl<gp_Pnt>();
 147     thePnt2 = thePlane->to3D(aEndPoint->x(), aEndPoint->y())->impl<gp_Pnt>();
 148     return true;
 149
 150   } else if (theConstraint->getKind() == SketchPlugin_ConstraintDistance::ID()) {
 151     // The constraint is distance
 152     std::shared_ptr<GeomDataAPI_Point2D> aPoint_A = SketcherPrs_Tools::getFeaturePoint(
 153         aData, SketchPlugin_Constraint::ENTITY_A(), thePlane);
 154     std::shared_ptr<GeomDataAPI_Point2D> aPoint_B = SketcherPrs_Tools::getFeaturePoint(
 155         aData, SketchPlugin_Constraint::ENTITY_B(), thePlane);
 156
 157     std::shared_ptr<GeomAPI_Pnt2d> aPnt_A;
 158     std::shared_ptr<GeomAPI_Pnt2d> aPnt_B;
 159     if (aPoint_A && aPoint_B) {
 160       // Both objects are points
 161       aPnt_A = aPoint_A->pnt();
 162       aPnt_B = aPoint_B->pnt();
 163     } else if (!aPoint_A && aPoint_B) {
 164       // First object is line
 165       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 166           aData, SketchPlugin_Constraint::ENTITY_A());
 167       if (aLine) {
 168         aPnt_B = aPoint_B->pnt();
 169         aPnt_A = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_B);
 170       }
 171     } else if (aPoint_A && !aPoint_B) {
 172       // Second object is line
 173       FeaturePtr aLine = SketcherPrs_Tools::getFeatureLine(
 174           aData, SketchPlugin_Constraint::ENTITY_B());
 175       if (aLine) {
 176         aPnt_A = aPoint_A->pnt();
 177         aPnt_B = SketcherPrs_Tools::getProjectionPoint(aLine, aPnt_A);
 178       }
 179     }
 180     if (!aPnt_A || !aPnt_B) // Objects not found
 181       return false;
 182
 183     // Get points from these object
 184     std::shared_ptr<GeomAPI_Pnt> aPoint1 = thePlane->to3D(aPnt_A->x(), aPnt_A->y());
 185     std::shared_ptr<GeomAPI_Pnt> aPoint2 = thePlane->to3D(aPnt_B->x(), aPnt_B->y());
 186     thePnt1 = aPoint1->impl<gp_Pnt>();
 187     thePnt2 = aPoint2->impl<gp_Pnt>();
 188     return true;
 189   }
 190   return false;
 191 }
 192
 193
 194
 195 void SketcherPrs_LengthDimension::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
 196                                                    const Standard_Integer theMode)
 197 {
 198   // Map the application selection modes to standard ones
 199   Standard_Integer aMode;
 200   switch (theMode) {
 201   case 0: // we should use selection of all objects
 202     aMode = 0;
 203     break;
 204   case SketcherPrs_Tools::Sel_Dimension_All:
 205     aMode = 0;
 206     break;
 207   case SketcherPrs_Tools::Sel_Dimension_Line:
 208     aMode = 1;
 209     break;
 210   case SketcherPrs_Tools::Sel_Dimension_Text:
 211     aMode = 2;
 212     break;
 213   default: {
 214     // there are own selection modes, so the others should be ignored
 215     // otherwise, the text selection appears in the viewer
 216     return;
 217   }
 218   }
 219   SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
 220   AIS_LengthDimension::ComputeSelection(aSelection, aMode);
 221 }