src/DsgPrs/DsgPrs_RadiusPresentation.cxx

   1 // File:        DsgPrs_RadiusPresentation.cxx
   2 // Created:     Wed Mar  1 15:50:43 1995
   3 // Author:      Arnaud BOUZY
   4 //              <adn>
   5 //modified      20-feb-98 by <SZY>
   6 //              Sergei Zaritchny
   7
   8 #include <DsgPrs_RadiusPresentation.ixx>
   9 #include <gp_Lin.hxx>
  10 #include <gp_Dir.hxx>
  11 #include <gp_Circ.hxx>
  12 #include <ElCLib.hxx>
  13 #include <Graphic3d_Group.hxx>
  14 #include <Graphic3d_Array1OfVertex.hxx>
  15 #include <Prs3d_Arrow.hxx>
  16 #include <Prs3d_ArrowAspect.hxx>
  17 #include <Prs3d_LineAspect.hxx>
  18 #include <Prs3d_LengthAspect.hxx>
  19 #include <Prs3d_Text.hxx>
  20
  21 #include <Graphic3d_Vertex.hxx>
  22 #include <Graphic3d_AspectMarker3d.hxx>
  23 #include <Graphic3d_AspectLine3d.hxx>
  24 #include <Aspect_TypeOfLine.hxx>
  25 #include <Aspect_TypeOfMarker.hxx>
  26 #include <Aspect_AspectMarker.hxx>
  27 #include <Quantity_Color.hxx>
  28 #include <DsgPrs.hxx>
  29 #include <Precision.hxx>
  30 #include <gce_MakeLin.hxx>
  31 #include <gce_MakeDir.hxx>
  32
  33
  34 static Standard_Boolean DsgPrs_InDomain(const Standard_Real fpar,
  35                                         const Standard_Real lpar,
  36                                         const Standard_Real para)
  37 {
  38   if (fpar >= 0.) {
  39     return ((para >= fpar) && (para <= lpar));
  40   }
  41   if (para >= (fpar+2*PI)) return Standard_True;
  42   if (para <= lpar) return Standard_True;
  43   return Standard_False;
  44 }
  45
  46 //=======================================================================
  47 //function : Add
  48 //purpose  :
  49 //=======================================================================
  50
  51 void DsgPrs_RadiusPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
  52                                      const Handle(Prs3d_Drawer)& aDrawer,
  53                                      const TCollection_ExtendedString& aText,
  54                                      const gp_Pnt& AttachmentPoint,
  55                                      const gp_Circ& aCircle,
  56                                      const Standard_Real firstparam,
  57                                      const Standard_Real lastparam,
  58                                      const Standard_Boolean drawFromCenter,
  59                                      const Standard_Boolean reverseArrow)
  60 {
  61   Standard_Real fpara = firstparam;
  62   Standard_Real lpara = lastparam;
  63   while (lpara > 2*PI) {
  64     fpara -= 2*PI;
  65     lpara -= 2*PI;
  66   }
  67   Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
  68   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  69   Standard_Real parat = ElCLib::Parameter(aCircle,AttachmentPoint);
  70   gp_Pnt attpoint = AttachmentPoint;
  71   Standard_Boolean otherside = Standard_False;
  72   if ( !DsgPrs_InDomain(fpara,lpara,parat)) {
  73     Standard_Real otherpar = parat + PI;
  74     if (otherpar > 2*PI) otherpar -= 2*PI;
  75     if (DsgPrs_InDomain(fpara,lpara,otherpar)) {
  76       parat = otherpar;
  77       otherside = Standard_True;
  78     }
  79     else {
  80       Standard_Real ecartpar = Min(Abs(fpara-parat),
  81                                    Abs(lpara-parat));
  82       Standard_Real ecartoth = Min(Abs(fpara-otherpar),
  83                                    Abs(lpara-otherpar));
  84       if (ecartpar <= ecartoth) {
  85         if (parat < fpara) {
  86           parat = fpara;
  87         }
  88         else {
  89           parat = lpara;
  90         }
  91       }
  92       else {
  93         otherside = Standard_True;
  94         if (otherpar < fpara) {
  95           parat = fpara;
  96         }
  97         else {
  98           parat = lpara;
  99         }
 100       }
 101       gp_Pnt ptdir = ElCLib::Value(parat,aCircle);
 102       gp_Lin lsup(aCircle.Location(),
 103                   gp_Dir(ptdir.XYZ()-aCircle.Location().XYZ()));
 104       Standard_Real parpos = ElCLib::Parameter(lsup,AttachmentPoint);
 105       attpoint = ElCLib::Value(parpos,lsup);
 106     }
 107   }
 108   gp_Pnt ptoncirc = ElCLib::Value(parat,aCircle);
 109   gp_Lin L (aCircle.Location(),gp_Dir(attpoint.XYZ()-aCircle.Location().XYZ()));
 110   gp_Pnt firstpoint = attpoint;
 111   gp_Pnt drawtopoint = ptoncirc;
 112   if (drawFromCenter && !otherside) {
 113     Standard_Real uatt = ElCLib::Parameter(L,attpoint);
 114     Standard_Real uptc = ElCLib::Parameter(L,ptoncirc);
 115     if (Abs(uatt) > Abs(uptc)) {
 116       drawtopoint = aCircle.Location();
 117     }
 118     else {
 119       firstpoint = aCircle.Location();
 120     }
 121   }
 122
 123   Graphic3d_Array1OfVertex V(1,2);
 124
 125   Quantity_Length X,Y,Z;
 126
 127   firstpoint.Coord(X,Y,Z);
 128   V(1).SetCoord(X,Y,Z);
 129
 130   drawtopoint.Coord(X,Y,Z);
 131   V(2).SetCoord(X,Y,Z);
 132
 133   Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
 134
 135   gp_Dir arrdir = L.Direction();
 136   if (reverseArrow) {
 137     arrdir.Reverse();
 138   }
 139   // fleche
 140   Prs3d_Arrow::Draw(aPresentation,ptoncirc,arrdir,
 141                     LA->Arrow1Aspect()->Angle(),
 142                     LA->Arrow1Aspect()->Length());
 143
 144   // texte
 145   Prs3d_Text::Draw(aPresentation,LA->TextAspect(),aText,attpoint);
 146
 147 }
 148
 149 //=======================================================================
 150 //function : DsgPrs_RadiusPresentation::Add
 151 //purpose  : SZY 20-february-98
 152 //         : adds radius representation according drawFromCenter value
 153 //=======================================================================
 154
 155 void DsgPrs_RadiusPresentation::Add( const Handle(Prs3d_Presentation)& aPresentation,
 156                                      const Handle(Prs3d_Drawer)& aDrawer,
 157                                      const TCollection_ExtendedString& aText,
 158                                      const gp_Pnt& AttachmentPoint,
 159                                      const gp_Pnt& Center,
 160                                      const gp_Pnt& EndOfArrow,
 161                                      const DsgPrs_ArrowSide ArrowPrs,
 162                                      const Standard_Boolean drawFromCenter,
 163                                      const Standard_Boolean reverseArrow)
 164 {
 165   Handle( Prs3d_LengthAspect ) LA = aDrawer->LengthAspect();
 166   Prs3d_Root::CurrentGroup( aPresentation )->SetPrimitivesAspect( LA->LineAspect()->Aspect() );
 167
 168   Graphic3d_Array1OfVertex VertexArray( 1, 2 );
 169   gp_Pnt  LineOrigin, LineEnd;
 170   Quantity_Length X,Y,Z;
 171
 172   DsgPrs::ComputeRadiusLine( Center, EndOfArrow, AttachmentPoint, drawFromCenter,
 173                             LineOrigin, LineEnd);
 174 //
 175   LineOrigin.Coord( X, Y, Z );
 176   VertexArray(1).SetCoord( X, Y, Z );
 177
 178   LineEnd.Coord( X, Y, Z );
 179   VertexArray(2).SetCoord( X, Y, Z );
 180
 181   Prs3d_Root::CurrentGroup( aPresentation )->Polyline( VertexArray );
 182   // text
 183   Prs3d_Text::Draw( aPresentation, LA->TextAspect(), aText, AttachmentPoint );
 184
 185   gp_Dir ArrowDir = gce_MakeDir( LineOrigin , LineEnd );
 186   if (reverseArrow)
 187     ArrowDir.Reverse();
 188   DsgPrs::ComputeSymbol( aPresentation, LA, Center, EndOfArrow, ArrowDir.Reversed(), ArrowDir,
 189                         ArrowPrs, drawFromCenter );
 190 }
 191