src/DrawTrSurf/DrawTrSurf_BSplineCurve2d.cxx

   1 #include <DrawTrSurf_BSplineCurve2d.ixx>
   2 #include <Draw_MarkerShape.hxx>
   3 #include <Geom2d_BSplineCurve.hxx>
   4 #include <gp_Pnt.hxx>
   5 #include <TColgp_Array1OfPnt2d.hxx>
   6 #include <TColStd_Array1OfReal.hxx>
   7
   8
   9    DrawTrSurf_BSplineCurve2d::DrawTrSurf_BSplineCurve2d (
  10    const Handle(Geom2d_BSplineCurve)& C)
  11    : DrawTrSurf_Curve2d (C, Draw_vert, 100) {
  12
  13       drawKnots = Standard_True;
  14       knotsForm = Draw_Losange;
  15       knotsLook = Draw_violet;
  16       knotsDim  = 5;
  17       drawPoles = Standard_True;
  18       polesLook = Draw_rouge;
  19    }
  20
  21
  22
  23    DrawTrSurf_BSplineCurve2d::DrawTrSurf_BSplineCurve2d (
  24    const Handle(Geom2d_BSplineCurve)& C, const Draw_Color& CurvColor,
  25    const Draw_Color& PolesColor, const Draw_Color& KnotsColor,
  26    const Draw_MarkerShape KnotsShape, const Standard_Integer KnotsSize,
  27    const Standard_Boolean ShowPoles, const Standard_Boolean ShowKnots, const Standard_Integer Discret)
  28    : DrawTrSurf_Curve2d (C, CurvColor, Discret) {
  29
  30       drawKnots = ShowKnots;
  31       knotsForm = KnotsShape;
  32       knotsLook = KnotsColor;
  33       knotsDim  = KnotsSize;
  34       drawPoles = ShowPoles;
  35       polesLook = PolesColor;
  36    }
  37
  38
  39
  40 void DrawTrSurf_BSplineCurve2d::DrawOn (Draw_Display& dis) const
  41 {
  42
  43   Handle(Geom2d_BSplineCurve) C = Handle(Geom2d_BSplineCurve)::DownCast(curv);
  44
  45   if (drawPoles) {
  46     Standard_Integer NbPoles = C->NbPoles();
  47     dis.SetColor(polesLook);
  48     TColgp_Array1OfPnt2d CPoles (1, NbPoles);
  49     C->Poles (CPoles);
  50     dis.MoveTo(CPoles(1));
  51     for (Standard_Integer i = 2; i <= NbPoles; i++) {
  52       dis.DrawTo(CPoles(i));
  53     }
  54     if (C->IsPeriodic())
  55       dis.DrawTo(CPoles(1));
  56   }
  57
  58   DrawTrSurf_Curve2d::DrawOn(dis);
  59
  60   if (drawKnots) {
  61     Standard_Integer NbKnots = C->NbKnots();
  62     TColStd_Array1OfReal CKnots (1, NbKnots);
  63     C->Knots (CKnots);
  64     dis.SetColor(knotsLook);
  65     for (Standard_Integer i = 1; i <= NbKnots; i++) {
  66       gp_Pnt2d P = C->Value(CKnots(i));
  67       dis.DrawMarker (P, knotsForm, knotsDim);
  68     }
  69   }
  70 }
  71
  72
  73    void DrawTrSurf_BSplineCurve2d::ShowPoles () { drawPoles = Standard_True; }
  74
  75
  76    void DrawTrSurf_BSplineCurve2d::ShowKnots () { drawKnots = Standard_True; }
  77
  78
  79    void DrawTrSurf_BSplineCurve2d::ClearPoles () { drawPoles = Standard_False; }
  80
  81
  82    void DrawTrSurf_BSplineCurve2d::ClearKnots () { drawKnots = Standard_False; }
  83
  84
  85    void DrawTrSurf_BSplineCurve2d::FindPole (
  86    const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real XPrec,
  87    Standard_Integer& Index) const {
  88
  89      Handle(Geom2d_BSplineCurve) bc = Handle(Geom2d_BSplineCurve)::DownCast(curv);
  90      Standard_Real Prec = XPrec / D.Zoom();
  91      gp_Pnt2d p1(X/D.Zoom(),Y/D.Zoom());
  92      Index++;
  93      Standard_Integer NbPoles = bc->NbPoles();
  94      gp_Pnt P;
  95      gp_Pnt2d P2d;
  96      while (Index <= NbPoles) {
  97        P2d = bc->Pole(Index);
  98        P.SetCoord (P2d.X(), P2d.Y(), 0.0);
  99        if (D.Project(P).Distance(p1) <= Prec)
 100          return;
 101        Index++;
 102      }
 103      Index = 0;
 104    }
 105
 106
 107    void DrawTrSurf_BSplineCurve2d::FindKnot (
 108    const Standard_Real X, const Standard_Real Y, const Draw_Display& D, const Standard_Real Prec,
 109    Standard_Integer& Index) const {
 110
 111      Handle(Geom2d_BSplineCurve) bc = Handle(Geom2d_BSplineCurve)::DownCast(curv);
 112      gp_Pnt2d P2d;
 113      gp_Pnt P;
 114      gp_Pnt2d p1(X,Y);
 115      Index++;
 116      Standard_Integer NbKnots = bc->NbKnots();
 117      while (Index <= NbKnots) {
 118        P2d = bc->Value(bc->Knot(Index));
 119        P.SetCoord (P2d.X(), P2d.Y(), 0.0);
 120        if (D.Project(P).Distance(p1) <= Prec)
 121          return;
 122        Index++;
 123      }
 124      Index = 0;
 125    }
 126
 127 //=======================================================================
 128 //function : Copy
 129 //purpose  :
 130 //=======================================================================
 131
 132 Handle(Draw_Drawable3D)  DrawTrSurf_BSplineCurve2d::Copy()const
 133 {
 134   Handle(DrawTrSurf_BSplineCurve2d) DC = new DrawTrSurf_BSplineCurve2d
 135     (Handle(Geom2d_BSplineCurve)::DownCast(curv->Copy()),
 136      look,polesLook,knotsLook,knotsForm,knotsDim,
 137      drawPoles,drawKnots,
 138      GetDiscretisation());
 139
 140   return DC;
 141 }
 142