src/DsgPrs/DsgPrs_EllipseRadiusPresentation.cxx

   1 // File:        DsgPrs_EllipseRadiusPresentation.cxx
   2 // Created:     Mon Jan 26 09:59:22 1998
   3 // Author:      Sergey ZARITCHNY
   4 //              <szy@androx.nnov.matra-dtv.fr>
   5
   6
   7 #include <DsgPrs_EllipseRadiusPresentation.ixx>
   8
   9 #include <gp_Lin.hxx>
  10 #include <gp_Dir.hxx>
  11 #include <gp_Elips.hxx>
  12 #include <ElCLib.hxx>
  13 #include <Graphic3d_Group.hxx>
  14 #include <Graphic3d_Array1OfVertex.hxx>
  15 #include <Prs3d_LengthAspect.hxx>
  16 #include <Prs3d_Arrow.hxx>
  17 #include <Prs3d_ArrowAspect.hxx>
  18 #include <Prs3d_LineAspect.hxx>
  19 #include <Prs3d_Text.hxx>
  20 #include <TCollection_AsciiString.hxx>
  21 #include <TCollection_ExtendedString.hxx>
  22
  23 #include <Graphic3d_Vertex.hxx>
  24 #include <Graphic3d_AspectMarker3d.hxx>
  25 #include <Graphic3d_AspectLine3d.hxx>
  26 #include <Aspect_TypeOfLine.hxx>
  27 #include <Aspect_TypeOfMarker.hxx>
  28 #include <Aspect_AspectMarker.hxx>
  29 #include <Quantity_Color.hxx>
  30 #include <DsgPrs.hxx>
  31 #include <Precision.hxx>
  32
  33 #include <Geom_Ellipse.hxx>
  34 #include <Geom_Line.hxx>
  35 #include <Geom_TrimmedCurve.hxx>
  36 #include <GeomAPI_ExtremaCurveCurve.hxx>
  37 #include <Geom_OffsetCurve.hxx>
  38 //=======================================================================
  39 //function : Add
  40 //purpose  :
  41 //=======================================================================
  42
  43 void DsgPrs_EllipseRadiusPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
  44                                             const Handle(Prs3d_Drawer)& aDrawer,
  45                                             const Standard_Real theval,
  46                                             const TCollection_ExtendedString & aText,
  47 //                                          const gp_Elips & anEllipse,
  48                                             const gp_Pnt & aPosition,
  49                                             const gp_Pnt & anEndOfArrow,
  50                                             const gp_Pnt & aCenter,
  51                                             const Standard_Boolean IsMaxRadius,
  52                                             const DsgPrs_ArrowSide ArrowPrs)
  53 {
  54
  55   Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
  56   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  57
  58   Standard_Boolean inside  = Standard_False;
  59 //  gp_Pnt EndPoint, EndOfArrow;
  60   gp_Pnt EndPoint;
  61   Standard_Real dist    = aCenter.Distance( aPosition );
  62   if( dist > theval ) EndPoint = aPosition;
  63   else {
  64     EndPoint = anEndOfArrow;
  65     inside   = Standard_True;
  66   }
  67   Graphic3d_Array1OfVertex V(1,2);
  68   Quantity_Length X,Y,Z;
  69   aCenter.Coord(X,Y,Z);
  70   V(1).SetCoord(X,Y,Z);
  71   EndPoint.Coord(X,Y,Z);
  72   V(2).SetCoord(X,Y,Z);
  73   Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
  74
  75    // value
  76   TCollection_ExtendedString Text;
  77   if(IsMaxRadius)
  78     Text = TCollection_ExtendedString("a = ");
  79   else
  80     Text = TCollection_ExtendedString("b = ");
  81   Text +=  aText;
  82   Prs3d_Text::Draw(aPresentation, LA->TextAspect(), Text, aPosition );
  83
  84    // arrows
  85   gp_Dir arrdir( gp_Vec( aCenter, anEndOfArrow));
  86   if (!inside) arrdir.Reverse();
  87
  88   DsgPrs::ComputeSymbol(aPresentation, LA,  anEndOfArrow,  anEndOfArrow, arrdir, arrdir, ArrowPrs );
  89
  90 }
  91
  92 //=======================================================================
  93 //function : Add
  94 //purpose  :
  95 //=======================================================================
  96
  97 void DsgPrs_EllipseRadiusPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
  98                                             const Handle(Prs3d_Drawer)& aDrawer,
  99                                             const Standard_Real theval,
 100                                             const TCollection_ExtendedString & aText,
 101                                             const gp_Elips & anEllipse,
 102                                             const gp_Pnt & aPosition,
 103                                             const gp_Pnt & anEndOfArrow,
 104                                             const gp_Pnt & aCenter,
 105                                             const Standard_Real uFirst,
 106                                             const Standard_Boolean IsInDomain,
 107                                             const Standard_Boolean IsMaxRadius,
 108                                             const DsgPrs_ArrowSide ArrowPrs)
 109 {
 110
 111   Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
 112   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
 113   if(!IsInDomain)
 114     {
 115       Standard_Real parFirst;
 116       Standard_Real uLast = ElCLib::Parameter ( anEllipse, anEndOfArrow );
 117       Standard_Real Alpha = DsgPrs::DistanceFromApex(anEllipse, anEndOfArrow, uFirst);//length of ellipse arc
 118       gp_Vec Vapex(aCenter, ElCLib::Value( uLast, anEllipse )) ;
 119       gp_Vec Vpnt(aCenter,  ElCLib::Value( uFirst, anEllipse )) ;
 120       gp_Dir dir(Vpnt ^ Vapex);
 121       if(anEllipse.Position().Direction().IsOpposite( dir, Precision::Angular()))
 122         parFirst = uLast;
 123       else
 124         parFirst = uFirst;
 125       Standard_Integer NodeNumber = Max (4 , Standard_Integer (50. * Alpha / M_PI));
 126       Graphic3d_Array1OfVertex ApproxArc( 0, NodeNumber-1 );
 127       Standard_Real delta = Alpha / ( NodeNumber - 1 );
 128       gp_Pnt CurPnt;
 129       for (Standard_Integer i = 0 ; i < NodeNumber; i++)
 130         {
 131           CurPnt =  ElCLib::Value( parFirst, anEllipse );
 132           ApproxArc(i).SetCoord( CurPnt.X(), CurPnt.Y(), CurPnt.Z() );
 133           parFirst += delta ;
 134         }
 135       Prs3d_Root::CurrentGroup( aPresentation )->Polyline( ApproxArc );
 136     }
 137   DsgPrs_EllipseRadiusPresentation::Add(aPresentation, aDrawer, theval, aText,
 138                                         aPosition, anEndOfArrow, aCenter,  IsMaxRadius, ArrowPrs);
 139
 140 }
 141
 142
 143
 144 //=======================================================================
 145 //function : Add
 146 //purpose  : // for offset curve
 147 //=======================================================================
 148
 149 void DsgPrs_EllipseRadiusPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
 150                                             const Handle(Prs3d_Drawer)& aDrawer,
 151                                             const Standard_Real theval,
 152                                             const TCollection_ExtendedString & aText,
 153                                             const Handle(Geom_OffsetCurve) & aCurve,
 154                                             const gp_Pnt & aPosition,
 155                                             const gp_Pnt & anEndOfArrow,
 156                                             const gp_Pnt & aCenter,
 157                                             const Standard_Real uFirst,
 158                                             const Standard_Boolean IsInDomain,
 159                                             const Standard_Boolean IsMaxRadius,
 160                                             const DsgPrs_ArrowSide ArrowPrs)
 161 {
 162
 163   Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
 164   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
 165   if(!IsInDomain)
 166     {
 167       Standard_Real parFirst;
 168       if(!aCurve->IsCN(1)) return ;
 169       gp_Elips aBEllipse = Handle(Geom_Ellipse)::DownCast(aCurve->BasisCurve ())->Elips();
 170       Standard_Real Offset = aCurve->Offset();
 171       aBEllipse.SetMajorRadius(aBEllipse.MajorRadius() + Offset);
 172       aBEllipse.SetMinorRadius(aBEllipse.MinorRadius() + Offset);
 173       Standard_Real uLast = ElCLib::Parameter ( aBEllipse, anEndOfArrow );
 174       Standard_Real Alpha = DsgPrs::DistanceFromApex(aBEllipse, anEndOfArrow, uFirst);//length of ellipse arc
 175       gp_Pnt p1;
 176       aCurve->D0(uFirst, p1);
 177       gp_Vec Vapex(aCenter,  anEndOfArrow) ;
 178       gp_Vec Vpnt (aCenter,   p1) ;
 179       gp_Dir dir(Vpnt ^ Vapex);
 180       if(aCurve->Direction().IsOpposite( dir, Precision::Angular()))
 181         parFirst = uLast;
 182       else
 183         parFirst = uFirst;
 184       Standard_Integer NodeNumber = Max (4 , Standard_Integer (50. * Alpha / M_PI));
 185       Graphic3d_Array1OfVertex ApproxArc( 0, NodeNumber-1 );
 186       Standard_Real delta = Alpha / ( NodeNumber - 1 );
 187       gp_Pnt CurPnt;
 188       for (Standard_Integer i = 0 ; i < NodeNumber; i++)
 189         {
 190           aCurve->D0( parFirst, CurPnt );
 191           ApproxArc(i).SetCoord( CurPnt.X(), CurPnt.Y(), CurPnt.Z() );
 192           parFirst += delta ;
 193         }
 194       Prs3d_Root::CurrentGroup( aPresentation )->Polyline( ApproxArc );
 195     }
 196   DsgPrs_EllipseRadiusPresentation::Add(aPresentation, aDrawer, theval, aText,
 197                                         aPosition, anEndOfArrow, aCenter,  IsMaxRadius, ArrowPrs);
 198
 199 }