// File:	DrawTrSurf.cxx
// Created:	Thu Aug 12 19:05:42 1993
// Author:	Bruno DUMORTIER
//		<dub@topsn3>

#ifdef HAVE_CONFIG_H
# include <oce-config.h>
#endif

#ifdef HAVE_IOS
# include <ios>
#elif defined(HAVE_IOS_H)
# include <ios.h>
#endif

#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif

#include <Standard_Stream.hxx>

#include <Draw_Color.hxx>
#include <DrawTrSurf.ixx>
#include <DrawTrSurf_Point.hxx>
#include <DrawTrSurf_BezierSurface.hxx>
#include <DrawTrSurf_BSplineSurface.hxx>
#include <DrawTrSurf_BezierCurve.hxx>
#include <DrawTrSurf_BSplineCurve.hxx>
#include <DrawTrSurf_BezierCurve2d.hxx>
#include <DrawTrSurf_BSplineCurve2d.hxx>
#include <DrawTrSurf_Triangulation.hxx>
#include <DrawTrSurf_Polygon3D.hxx>
#include <DrawTrSurf_Polygon2D.hxx>
#include <Draw_Appli.hxx>
#include <Draw.hxx>

#include <GeomTools_CurveSet.hxx>
#include <GeomTools_Curve2dSet.hxx>
#include <GeomTools_SurfaceSet.hxx>

#include <gp_Pln.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Ax2.hxx>
#include <gp_Trsf2d.hxx>
#include <Poly.hxx>

static Draw_Color       PntColor(Draw_rouge);
static Draw_Color       CurvColor(Draw_jaune);
static Draw_Color       BoundsColor(Draw_vert);
static Draw_Color       IsosColor(Draw_bleu);
static Draw_Color       PolesColor(Draw_rouge);
static Draw_Color       KnotsColor(Draw_violet);

static Draw_MarkerShape PntShape   = Draw_Plus;
static Draw_MarkerShape KnotsShape = Draw_Losange;
static Standard_Boolean ShowPoles  = Standard_True;
static Standard_Boolean ShowKnots  = Standard_True;
static Standard_Boolean knotsIsos  =Standard_True;
static Standard_Real    Deflection = 0.01;
static Standard_Integer KnotsSize  = 5;
static Standard_Integer Discret    = 30;
static Standard_Integer DrawMode   = 0;
static Standard_Integer NbUIsos    = 10;
static Standard_Integer NbVIsos    = 10;

Standard_EXPORT Draw_Color DrawTrSurf_CurveColor(const Draw_Color col)
{
  Draw_Color c = CurvColor;
  CurvColor = col;
  return c;
}

//=======================================================================
//function : GetDrawable
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_Drawable) GetDrawable(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_Drawable) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_Drawable)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetSurface
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_Surface) GetSurface(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_Surface) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_Surface)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetBezierSurface
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BezierSurface) GetBezierSurface(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BezierSurface) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BezierSurface)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetBSplineSurface
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BSplineSurface) GetBSplineSurface(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BSplineSurface) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BSplineSurface)::DownCast(D);
  return Dr;
}

#ifdef DEB
//=======================================================================
//function : GetCurve
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_Curve) GetCurve(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_Curve) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_Curve)::DownCast(D);
  return Dr;
}
#endif

//=======================================================================
//function : GetBezierCurve
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BezierCurve) GetBezierCurve(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BezierCurve) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BezierCurve)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetBSplineCurve
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BSplineCurve) GetBSplineCurve(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BSplineCurve) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BSplineCurve)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetBezierCurve2d
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BezierCurve2d) GetBezierCurve2d(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BezierCurve2d) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BezierCurve2d)::DownCast(D);
  return Dr;
}

//=======================================================================
//function : GetBSplineCurve2d
//purpose  : 
//=======================================================================
static Handle(DrawTrSurf_BSplineCurve2d) GetBSplineCurve2d(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);
  Handle(DrawTrSurf_BSplineCurve2d) Dr;
  if (!D.IsNull()) 
    Dr = Handle(DrawTrSurf_BSplineCurve2d)::DownCast(D);
  return Dr;
}


//=======================================================================
//function : nbiso
//purpose  : 
//=======================================================================
static Standard_Integer nbiso (Draw_Interpretor& di, Standard_Integer n, const char** a)
{
  if (n < 4) {
    if (n == 3) {
      NbUIsos = atoi(a[1]);
      NbVIsos = atoi(a[2]);
    }
    di << NbUIsos << " " << NbVIsos;
  }
  else {
    for (Standard_Integer i = 1; i < n - 2; i++) {
      Handle(DrawTrSurf_Surface) DS = GetSurface(a[i]);
      if (!DS.IsNull()) {
	DS->ShowIsos(atoi(a[n-2]),atoi(a[n-1]));
	Draw::Repaint();
      }
    }
  }
  return 0;
}

//=======================================================================
//function : drawpoles
//purpose  : 
//=======================================================================

static Standard_Integer drawpoles(Draw_Interpretor&, 
				  Standard_Integer n,
				  const char** a)
{
  if ( n == 1) {
    if ( !strcmp(a[0],"shpoles")) {
      ShowPoles = Standard_True;
    }
    else if ( !strcmp(a[0],"clpoles")) {
      ShowPoles = Standard_False;
    }
    else if ( !strcmp(a[0],"shknots")) {
      ShowKnots = Standard_True;
    }
    else if ( !strcmp(a[0],"clknots")) {
      ShowKnots = Standard_False;
    }
  }

  if ( n<2) return 1;

  Handle(DrawTrSurf_BezierSurface) BZS;
  BZS = GetBezierSurface(a[1]);
  if ( !BZS.IsNull()) {
    if ( !strcmp(a[0],"shpoles")) {
      BZS->ShowPoles();
    }
    else if ( !strcmp(a[0],"clpoles")) {
      BZS->ClearPoles();
    }
    else {
      return 1;
    }
  }
  else {
    Handle(DrawTrSurf_BSplineSurface) BSS = GetBSplineSurface(a[1]);
    if ( !BSS.IsNull()) {
      if ( !strcmp(a[0],"shpoles")) {
	BSS->ShowPoles();
      }
      else if ( !strcmp(a[0],"clpoles")) {
	BSS->ClearPoles();
      }
      else if ( !strcmp(a[0],"shknots")) {
	BSS->ShowKnots();
      }
      else if ( !strcmp(a[0],"clknots")) {
	BSS->ClearKnots();
      }
    }
    else {
      Handle(DrawTrSurf_BezierCurve) BZC = GetBezierCurve(a[1]);
      if ( !BZC.IsNull()) {
	if ( !strcmp(a[0],"shpoles")) {
	  BZC->ShowPoles();
	}
	else if ( !strcmp(a[0],"clpoles")) {
	  BZC->ClearPoles();
	}
	else {
	  return 1;
	}
      }
      else {
	Handle(DrawTrSurf_BSplineCurve) BSC = GetBSplineCurve(a[1]);
	if ( !BSC.IsNull()) {
	  if ( !strcmp(a[0],"shpoles")) {
	    BSC->ShowPoles();
	  }
	  else if ( !strcmp(a[0],"clpoles")) {
	    BSC->ClearPoles();
	  }
	  else if ( !strcmp(a[0],"shknots")) {
	    BSC->ShowKnots();
	  }
	  else if ( !strcmp(a[0],"clknots")) {
	    BSC->ClearKnots();
	  }
	}
	else {
	  Handle(DrawTrSurf_BezierCurve2d) BZ2 = GetBezierCurve2d(a[1]);
	  if ( !BZ2.IsNull()) {
	    if ( !strcmp(a[0],"shpoles")) {
	      BZ2->ShowPoles();
	    }
	    else if ( !strcmp(a[0],"clpoles")) {
	      BZ2->ClearPoles();
	    }
	    else {
	      return 1;
	    }
	  }
	  else {
	    Handle(DrawTrSurf_BSplineCurve2d) BS2 = GetBSplineCurve2d(a[1]);
	    if ( !BS2.IsNull()) {
	      if ( !strcmp(a[0],"shpoles")) {
		BS2->ShowPoles();
	      }
	      else if ( !strcmp(a[0],"clpoles")) {
		BS2->ClearPoles();
	      }
	      else if ( !strcmp(a[0],"shknots")) {
		BS2->ShowKnots();
	      }
	      else if ( !strcmp(a[0],"clknots")) {
		BS2->ClearKnots();
	      }
	    }
	    else {
	      return 1;
	    }
	  }
	}
      }
    }
  }
  Draw::Repaint();
  return 0;
}

//=======================================================================
//function : draw
//purpose  : 
//=======================================================================

static Standard_Integer draw (Draw_Interpretor& di, Standard_Integer n, const char** a)
{
  if (n <= 2) {
	if (!strcmp(a[0],"dmode")) {
	  if (n == 2) {
	    DrawMode = 1;
	  }
	  if (DrawMode)
	    di << "u";
	  else
	    di << "d";
	}
	
	else if (!strcmp(a[0],"discr")) {
	  if (n == 2)
	    Discret = atoi(a[n-1]);
	  di << Discret;
	}
	
	else if (!strcmp(a[0],"defle")) {
	  if (n == 2)
	    Deflection = atof(a[n-1]);
	  di << Deflection;
	}
  }
  else {
    for (Standard_Integer i = 1; i < n - 1; i++) {
      Handle(DrawTrSurf_Drawable) D = GetDrawable(a[1]);
      if (!D.IsNull()) {
	if (!strcmp(a[0],"dmode")) {
	  Standard_Integer mod = 0;
	  if ((*a[n-1] == 'U')||(*a[n-1] == 'u')) mod = 1;
	  D->SetDrawMode(mod);
	}
	
	else if (!strcmp(a[0],"discr")) {
	  D->SetDiscretisation(atoi(a[n-1]));
	}
	
	else if (!strcmp(a[0],"defle")) {
	  D->SetDeflection(atof(a[n-1]));
	}
	
	Draw::Repaint();
      }
    }
  }
  return 0;
}

//=======================================================================
//function : transform
//purpose  : 
//=======================================================================

static Standard_Integer transform (Draw_Interpretor& di, Standard_Integer n, const char** a)
{
  if (n < 5) return 1;
  gp_Trsf T;
  Standard_Integer i,last = n-1;
  if (!strcmp(a[0],"pscale")) {
    Standard_Real s = atof(a[last]);
    last--;
    if (last < 4) return 1;
    gp_Pnt P(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
    T.SetScale(P,s);
  }
  else if (!strcmp(a[0]+1,"mirror")) {
    if (last < 4) return 1;
    gp_Pnt P(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
    if (*a[0] == 'p') {
      T.SetMirror(P);
    }
    else {
      last -= 3;
      if (last < 4) return 1;
      gp_Pnt O(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
      last -= 3;
      gp_Dir D(P.X(),P.Y(),P.Z());
      if (*a[0] == 'l') {
	T.SetMirror(gp_Ax1(O,D));
      }
      else if (*a[0] == 's') {
	gp_Pln Pl(O,D);
	T.SetMirror(Pl.Position().Ax2());
      }
    }
  }

  else if (!strcmp(a[0],"translate")) {
    if (last < 4) return 1;
    gp_Vec V(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
    last -= 3;
    T.SetTranslation(V);
  }

  else if (!strcmp(a[0],"rotate")) {
    if (last < 8) return 1;
    Standard_Real ang = atof(a[last]) * PI180;
    last --;
    gp_Dir D(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
    last -= 3;
    gp_Pnt P(atof(a[last-2]),atof(a[last-1]),atof(a[last]));
    last -= 3;
    T.SetRotation(gp_Ax1(P,D),ang);
  }

  for (i = 1; i <= last; i++) {
    Handle(Geom_Geometry) G = DrawTrSurf::Get(a[i]);
    if (!G.IsNull()) {
      G->Transform(T);
      Draw::Repaint();
    }
    else {
      gp_Pnt P;
      if (DrawTrSurf::GetPoint(a[i],P)) {
	P.Transform(T);
	DrawTrSurf::Set(a[i],P);
      }
    }
    di << a[i] << " ";
  }
  return 0;
}

//=======================================================================
//function : d2transform
//purpose  : 
//=======================================================================

static Standard_Integer d2transform (Draw_Interpretor& di, Standard_Integer n, const char** a)
{
  if (n < 4) return 1;
  gp_Trsf2d T;
  Standard_Integer i,last = n-1;
  if (!strcmp(a[0],"2dpscale")) {
    Standard_Real s = atof(a[last]);
    last--;
    if (last < 3) return 1;
    gp_Pnt2d P(atof(a[last-1]),atof(a[last]));
    T.SetScale(P,s);
  }
  else if ( (!strcmp(a[0],"2dpmirror")) || 
	    (!strcmp(a[0],"2dlmirror"))   ) {
    if (last < 3) return 1;
    gp_Pnt2d P(atof(a[last-1]),atof(a[last]));
    if (!strcmp(a[0],"2dpmirror")) {
      T.SetMirror(P);
    }
    else {
      last -= 2;
      if (last < 3) return 1;
      gp_Pnt2d O(atof(a[last-1]),atof(a[last]));
      last -= 2;
      gp_Dir2d D(P.X(),P.Y());
      T.SetMirror(gp_Ax2d(O,D));
    }
  }

  else if (!strcmp(a[0],"2dtranslate")) {
    if (last < 3) return 1;
    gp_Vec2d V(atof(a[last-1]),atof(a[last]));
    last -= 2;
    T.SetTranslation(V);
  }

  else if (!strcmp(a[0],"2drotate")) {
    if (last < 4) return 1;
    Standard_Real ang = atof(a[last]) * PI180;
    last --;
    gp_Pnt2d P(atof(a[last-1]),atof(a[last]));
    last -= 2;
    T.SetRotation(P,ang);
  }

  for (i = 1; i <= last; i++) {
    Handle(Geom2d_Curve) G = DrawTrSurf::GetCurve2d(a[i]);
    if (!G.IsNull()) {
      G->Transform(T);
      Draw::Repaint();
    }
    else {
      gp_Pnt2d P;
      if (DrawTrSurf::GetPoint2d(a[i],P)) {
	P.Transform(T);
	DrawTrSurf::Set(a[i],P);
      }
    }
    di << a[i] << " ";
  }
  return 0;
}

//=======================================================================
//function : Set
//purpose  : point
//=======================================================================
void  DrawTrSurf::Set(const Standard_CString Name, 
		      const gp_Pnt& P)
{
  Handle(DrawTrSurf_Point) DP = new DrawTrSurf_Point(P,PntShape,PntColor);
 Draw::Set(Name,DP);
}

//=======================================================================
//function : Set
//purpose  : point
//=======================================================================
void  DrawTrSurf::Set(const Standard_CString Name, 
		      const gp_Pnt2d& P)
{
  Handle(DrawTrSurf_Point) DP = new DrawTrSurf_Point(P,PntShape,PntColor);
 Draw::Set(Name,DP);
}

//=======================================================================
//function : Set
//purpose  : Geometry from Geom
//=======================================================================
void  DrawTrSurf::Set(const Standard_CString Name, 
		      const Handle(Geom_Geometry)& G)
{
  Handle(DrawTrSurf_Drawable) D;
  if (!G.IsNull()) {

    Handle(Geom_Curve) C = Handle(Geom_Curve)::DownCast(G);
    if (!C.IsNull()) {
      
      Handle(Geom_BezierCurve) Bez = 
	Handle(Geom_BezierCurve)::DownCast(C);
      if (!Bez.IsNull()) {
	Handle(DrawTrSurf_BezierCurve) DBez = 
	  new DrawTrSurf_BezierCurve(Bez,CurvColor,PolesColor,ShowPoles,
				     Discret,Deflection,DrawMode);
	D = DBez;
      }


      Handle(Geom_BSplineCurve) BS = 
	Handle(Geom_BSplineCurve)::DownCast(C);
      if (!BS.IsNull()) {
	Handle(DrawTrSurf_BSplineCurve) DBS = 
	  new DrawTrSurf_BSplineCurve(BS,
				      CurvColor,PolesColor,
				      KnotsColor,
				      KnotsShape,KnotsSize,
				      ShowPoles,ShowKnots,
				      Discret,Deflection,DrawMode);
	D = DBS;
      }

      if (Bez.IsNull() && BS.IsNull()) {
	Handle(DrawTrSurf_Curve) DC =
	  new DrawTrSurf_Curve(C,CurvColor,Discret,Deflection,DrawMode);
	D = DC;
      }
    }


    Handle(Geom_Surface) S = Handle(Geom_Surface)::DownCast(G);
    if (!S.IsNull()) {
      
      Handle(Geom_BezierSurface) Bez = 
	Handle(Geom_BezierSurface)::DownCast(S);
      if (!Bez.IsNull()) {
	Handle(DrawTrSurf_BezierSurface) DBez = 
	  new DrawTrSurf_BezierSurface(Bez,NbUIsos,NbVIsos,
				       BoundsColor,IsosColor,PolesColor,
				       ShowPoles,
				       Discret,Deflection,DrawMode);
	D = DBez;
      }


      Handle(Geom_BSplineSurface) BS = 
	Handle(Geom_BSplineSurface)::DownCast(S);
      if (!BS.IsNull()) {
	Handle(DrawTrSurf_BSplineSurface) DBS ;
	if (!knotsIsos) 
	  DBS = new DrawTrSurf_BSplineSurface(BS,
					      NbUIsos,NbVIsos,
					      BoundsColor,IsosColor,
					      PolesColor,KnotsColor,
					      KnotsShape,KnotsSize,
					      ShowPoles,ShowKnots,
					      Discret,Deflection,DrawMode);
	else
	  DBS = new DrawTrSurf_BSplineSurface(BS,
					      BoundsColor,IsosColor,
					      PolesColor,KnotsColor,
					      KnotsShape,KnotsSize,
					      ShowPoles,ShowKnots,
					      Discret,Deflection,DrawMode);
	
	D = DBS;
      }

      if (Bez.IsNull() && BS.IsNull()) {
	Handle(DrawTrSurf_Surface) DS =
	  new DrawTrSurf_Surface(S,
				 NbUIsos,NbVIsos,
				 BoundsColor,IsosColor,
				 Discret,Deflection,DrawMode);
	D = DS;
      }
    }

  }
  Draw::Set(Name,D);
}


//=======================================================================
//function : Set
//purpose  : Curve from Geom2d
//=======================================================================
void  DrawTrSurf::Set(const Standard_CString Name, 
		      const Handle(Geom2d_Curve)& C)
{
  Handle(DrawTrSurf_Drawable) D;
  if (!C.IsNull()) {

      Handle(Geom2d_BezierCurve) Bez = 
	Handle(Geom2d_BezierCurve)::DownCast(C);
      if (!Bez.IsNull()) {
	Handle(DrawTrSurf_BezierCurve2d) DBez = 
	  new DrawTrSurf_BezierCurve2d(Bez,CurvColor,PolesColor,ShowPoles,
				       Discret);
	D = DBez;
      }


      Handle(Geom2d_BSplineCurve) BS = 
	Handle(Geom2d_BSplineCurve)::DownCast(C);
      if (!BS.IsNull()) {
	Handle(DrawTrSurf_BSplineCurve2d) DBS = 
	  new DrawTrSurf_BSplineCurve2d(BS,
					CurvColor,PolesColor,
					KnotsColor,
					KnotsShape,KnotsSize,
					ShowPoles,ShowKnots,
					Discret);
	D = DBS;
      }
      
      if (Bez.IsNull() && BS.IsNull()) {
	Handle(DrawTrSurf_Curve2d) DC =
	  new DrawTrSurf_Curve2d(C,CurvColor,Discret);
	D = DC;
      }
    }

  Draw::Set(Name,D);
}

//=======================================================================
//function : Set
//purpose  : 
//=======================================================================
void DrawTrSurf::Set(const Standard_CString Name, 
		     const Handle(Poly_Triangulation)& T)
{
  Handle(DrawTrSurf_Triangulation) D = new DrawTrSurf_Triangulation(T);
  Draw::Set(Name,D);
}
//=======================================================================
//function : Set
//purpose  : 
//=======================================================================
void DrawTrSurf::Set(const Standard_CString Name, 
		     const Handle(Poly_Polygon3D)& P)
{
  Handle(DrawTrSurf_Polygon3D) D = new DrawTrSurf_Polygon3D(P);
  Draw::Set(Name,D);
}

//=======================================================================
//function : Set
//purpose  : 
//=======================================================================
void DrawTrSurf::Set(const Standard_CString Name, 
		     const Handle(Poly_Polygon2D)& P)
{
  Handle(DrawTrSurf_Polygon2D) D = new DrawTrSurf_Polygon2D(P);
  Draw::Set(Name,D);
}

//=======================================================================
//function : Get
//purpose  : 
//=======================================================================
Handle(Geom_Geometry)  DrawTrSurf::Get(Standard_CString& Name)
{
  Handle(Draw_Drawable3D) D = Draw::Get(Name);

  Handle(DrawTrSurf_Curve) DC = 
    Handle(DrawTrSurf_Curve)::DownCast(D);
  if (!DC.IsNull())
    return DC->GetCurve();

  Handle(DrawTrSurf_Surface) DS = 
    Handle(DrawTrSurf_Surface)::DownCast(D);
  if (!DS.IsNull())
    return DS->GetSurface();

  return Handle(Geom_Geometry) ();
}


//=======================================================================
//function : GetPoint
//purpose  : 
//=======================================================================
Standard_Boolean DrawTrSurf::GetPoint(Standard_CString& Name,
				      gp_Pnt& P)
{
  Handle(DrawTrSurf_Point) D = 
    Handle(DrawTrSurf_Point)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Standard_False;
  else if (!D->Is3D())
    return Standard_False;
  else {
    P = D->Point();
    return Standard_True;
  }
}

//=======================================================================
//function : GetPoint2d
//purpose  : 
//=======================================================================
Standard_Boolean DrawTrSurf::GetPoint2d(Standard_CString& Name,
					gp_Pnt2d& P)
{
  Handle(DrawTrSurf_Point) D = 
    Handle(DrawTrSurf_Point)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Standard_False;
  else if (D->Is3D()) 
    return Standard_False;
  else {
    P = D->Point2d();
    return Standard_True;
  }
}

//=======================================================================
//function : GetCurve
//purpose  : 
//=======================================================================
Handle(Geom_Curve)  DrawTrSurf::GetCurve(Standard_CString& Name)
{
  Handle(DrawTrSurf_Curve) D = 
    Handle(DrawTrSurf_Curve)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_Curve)();
  else
    return D->GetCurve();
}


//=======================================================================
//function : GetBezierCurve
//purpose  : 
//=======================================================================
Handle(Geom_BezierCurve)  DrawTrSurf::GetBezierCurve(Standard_CString& Name)
{
  Handle(DrawTrSurf_BezierCurve) D = 
    Handle(DrawTrSurf_BezierCurve)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_BezierCurve)();
  else
    return Handle(Geom_BezierCurve)::DownCast(D->GetCurve());
}


//=======================================================================
//function : GetBSplineCurve
//purpose  : 
//=======================================================================
Handle(Geom_BSplineCurve)  DrawTrSurf::GetBSplineCurve(Standard_CString& Name)
{
  Handle(DrawTrSurf_BSplineCurve) D = 
    Handle(DrawTrSurf_BSplineCurve)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_BSplineCurve)();
  else
    return Handle(Geom_BSplineCurve)::DownCast(D->GetCurve());
}
//=======================================================================
//function : GetCurve2d
//purpose  : 
//=======================================================================
Handle(Geom2d_Curve)  DrawTrSurf::GetCurve2d(Standard_CString& Name)
{
  Handle(DrawTrSurf_Curve2d) D = 
    Handle(DrawTrSurf_Curve2d)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom2d_Curve)();
  else
    return D->GetCurve();
}
//=======================================================================
//function : GetBezierCurve2d
//purpose  : 
//=======================================================================
Handle(Geom2d_BezierCurve)  DrawTrSurf::GetBezierCurve2d(Standard_CString& Name)
{
  Handle(DrawTrSurf_Curve2d) D = 
    Handle(DrawTrSurf_Curve2d)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom2d_BezierCurve)();
  else
    return Handle(Geom2d_BezierCurve)::DownCast(D->GetCurve());
}
//=======================================================================
//function : GetBSplineCurve2d
//purpose  : 
//=======================================================================
Handle(Geom2d_BSplineCurve)  DrawTrSurf::GetBSplineCurve2d
       (Standard_CString& Name)
{
  Handle(DrawTrSurf_Curve2d) D = 
    Handle(DrawTrSurf_Curve2d)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom2d_BSplineCurve)();
  else
    return Handle(Geom2d_BSplineCurve)::DownCast(D->GetCurve());
}
//=======================================================================
//function : GetSurface
//purpose  : 
//=======================================================================
Handle(Geom_Surface)  DrawTrSurf::GetSurface
       (Standard_CString& Name)
{
  Handle(DrawTrSurf_Surface) D = 
    Handle(DrawTrSurf_Surface)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_Surface)();
  else
    return D->GetSurface();
}
//=======================================================================
//function : GetBezierSurface
//purpose  : 
//=======================================================================
Handle(Geom_BezierSurface)  DrawTrSurf::GetBezierSurface
       (Standard_CString& Name)
{
  Handle(DrawTrSurf_BezierSurface) D = 
    Handle(DrawTrSurf_BezierSurface)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_BezierSurface)();
  else
    return Handle(Geom_BezierSurface)::DownCast(D->GetSurface());
}
//=======================================================================
//function : GetBSplineSurface
//purpose  : 
//=======================================================================
Handle(Geom_BSplineSurface) DrawTrSurf::GetBSplineSurface
       (Standard_CString& Name)
{
  Handle(DrawTrSurf_BSplineSurface) D = 
    Handle(DrawTrSurf_BSplineSurface)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Geom_BSplineSurface)();
  else
    return Handle(Geom_BSplineSurface)::DownCast(D->GetSurface());
}
//=======================================================================
//function : GetTriangulation
//purpose  : 
//=======================================================================
Handle(Poly_Triangulation) DrawTrSurf::GetTriangulation(Standard_CString& Name)
{
  Handle(DrawTrSurf_Triangulation) D =
    Handle(DrawTrSurf_Triangulation)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Poly_Triangulation)();
  else
    return D->Triangulation();
}
//=======================================================================
//function : GetPolygon3D
//purpose  : 
//=======================================================================
Handle(Poly_Polygon3D) DrawTrSurf::GetPolygon3D(Standard_CString& Name)
{
  Handle(DrawTrSurf_Polygon3D) D =
    Handle(DrawTrSurf_Polygon3D)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Poly_Polygon3D)();
  else
    return D->Polygon3D();
}
//=======================================================================
//function : GetPolygon2D
//purpose  : 
//=======================================================================
Handle(Poly_Polygon2D) DrawTrSurf::GetPolygon2D(Standard_CString& Name)
{
  Handle(DrawTrSurf_Polygon2D) D =
    Handle(DrawTrSurf_Polygon2D)::DownCast(Draw::Get(Name));
  if (D.IsNull())
    return Handle(Poly_Polygon2D)();
  else
    return D->Polygon2D();
}
//=======================================================================
//function : setcurvcolor
//purpose  : 
//=======================================================================
static Standard_Integer setcurvcolor(Draw_Interpretor& di, Standard_Integer n, const char** a)
{
  Draw_Color col,savecol;

  savecol = DrawTrSurf_CurveColor(Draw_Color(Draw_jaune));
  DrawTrSurf_CurveColor(savecol);

  if (n < 2) {
    switch (savecol.ID()) {
    case Draw_blanc:   di <<"blanc "   << "\n"; break;
    case Draw_rouge:   di <<"rouge "   << "\n"; break;
    case Draw_vert:    di <<"vert "    << "\n"; break;
    case Draw_bleu:    di <<"bleu "    << "\n"; break;
    case Draw_cyan:    di <<"cyan "    << "\n"; break;
    case Draw_or:      di <<"or "      << "\n"; break;
    case Draw_magenta: di <<"magenta " << "\n"; break;
    case Draw_marron:  di <<"marron "  << "\n"; break;
    case Draw_orange:  di <<"orange "  << "\n"; break;
    case Draw_rose:    di <<"rose "    << "\n"; break;
    case Draw_saumon:  di <<"saumon "  << "\n"; break;
    case Draw_violet:  di <<"violet "  << "\n"; break;
    case Draw_jaune:   di <<"jaune "   << "\n"; break;
    case Draw_kaki:    di <<"kaki "    << "\n"; break;
    case Draw_corail:  di <<"corail "  << "\n"; break;
    }

  } else {
    col = savecol;
    if (!strcasecmp(a[1],"blanc"))
      col = Draw_blanc;
    if (!strcasecmp(a[1],"rouge"))
      col = Draw_rouge;
    if (!strcasecmp(a[1],"vert"))
      col = Draw_vert;
    if (!strcasecmp(a[1],"bleu"))
      col = Draw_bleu;
    if (!strcasecmp(a[1],"cyan"))
      col = Draw_cyan;
    if (!strcasecmp(a[1],"or"))
      col = Draw_or;
    if (!strcasecmp(a[1],"magenta"))
      col = Draw_magenta;
    if (!strcasecmp(a[1],"marron"))
      col = Draw_marron;
    if (!strcasecmp(a[1],"orange"))
      col = Draw_orange;
    if (!strcasecmp(a[1],"rose"))
      col = Draw_rose;
    if (!strcasecmp(a[1],"saumon"))
      col = Draw_saumon;
    if (!strcasecmp(a[1],"violet"))
      col = Draw_violet;
    if (!strcasecmp(a[1],"jaune"))
      col = Draw_jaune;
    if (!strcasecmp(a[1],"kaki"))
      col = Draw_kaki;
    if (!strcasecmp(a[1],"corail"))
      col = Draw_corail;
    
    DrawTrSurf_CurveColor(col);
    
  }
  return 0;
}

//=======================================================================
//function : changecurvcolor
//purpose  : 
//=======================================================================

static Standard_Integer changecurvcolor(Draw_Interpretor& , Standard_Integer n, const char** a)
{
  Draw_Color col,savecol;

  savecol = DrawTrSurf_CurveColor(Draw_Color(Draw_jaune));
  DrawTrSurf_CurveColor(savecol);

  if (n < 3) return 1;

  col = savecol;
  if (!strcasecmp(a[1],"blanc"))
    col = Draw_blanc;
  if (!strcasecmp(a[1],"rouge"))
    col = Draw_rouge;
  if (!strcasecmp(a[1],"vert"))
    col = Draw_vert;
  if (!strcasecmp(a[1],"bleu"))
    col = Draw_bleu;
  if (!strcasecmp(a[1],"cyan"))
    col = Draw_cyan;
  if (!strcasecmp(a[1],"or"))
    col = Draw_or;
  if (!strcasecmp(a[1],"magenta"))
    col = Draw_magenta;
  if (!strcasecmp(a[1],"marron"))
    col = Draw_marron;
  if (!strcasecmp(a[1],"orange"))
    col = Draw_orange;
  if (!strcasecmp(a[1],"rose"))
    col = Draw_rose;
  if (!strcasecmp(a[1],"saumon"))
    col = Draw_saumon;
  if (!strcasecmp(a[1],"violet"))
    col = Draw_violet;
  if (!strcasecmp(a[1],"jaune"))
    col = Draw_jaune;
  if (!strcasecmp(a[1],"kaki"))
    col = Draw_kaki;
  if (!strcasecmp(a[1],"corail"))
    col = Draw_corail;
    
  Handle(DrawTrSurf_Curve) D = 
    Handle(DrawTrSurf_Curve)::DownCast(Draw::Get(a[2]));
  if (!D.IsNull()) {
    D->SetColor(col);
  }

  return 0;
}


//=======================================================================
//function : BasicCommands
//purpose  : 
//=======================================================================

static Standard_Boolean done = Standard_False;
void  DrawTrSurf::BasicCommands(Draw_Interpretor& theCommands)
{
  if (done) return;
  done = Standard_True;

  const char* g;
  g = "geometric display commands";
  
  theCommands.Add("nbiso",
		  "nbiso name [names...] nuiso nviso",
                  __FILE__,
		  nbiso,g);
  
  theCommands.Add("clpoles",
		  "clpoles [name], no args : modal ",
                  __FILE__,
		  drawpoles,g);
  
  theCommands.Add("shpoles",
		  "shpoles [name], no args : modal ",
                  __FILE__,
		  drawpoles,g);
  
  theCommands.Add("clknots",
		  "clknots [name], no args : modal ",
                  __FILE__,
		  drawpoles,g);
  
  theCommands.Add("shknots",
		  "shknots [name], no args : modal ",
                  __FILE__,
		  drawpoles,g);
  
  theCommands.Add("dmode",
		  "dmode [names...] Uniform/Discret",
                  __FILE__,
		  draw,g);

  theCommands.Add("discr",
		  "discr [names...] nbintervals",
                  __FILE__,
		  draw,g);

  theCommands.Add("defle",
		  "defle [names...] defle",
                  __FILE__,
		  draw,g);
  
  theCommands.Add("setcurvcolor","setcurvcolor [color] : set curve color by default, or print the current curve color if no argument (this does not modify the color of pcurve)",
  		  __FILE__,setcurvcolor,g);

  theCommands.Add("changecurvcolor","changecurvcolor color curve: change color of the curve",
  		  __FILE__,changecurvcolor,g);

  g = "Geometric tranformations";
  
  theCommands.Add("translate",
		  "translate name [names...] dx dy dz",
                  __FILE__,
		  transform,g);

  theCommands.Add("rotate",
		  "rotate name [names...] x y z dx dy dz angle",
                  __FILE__,
		  transform,g);

  theCommands.Add("pmirror",
		  "pmirror name [names...] x y z",
                  __FILE__,
		  transform,g);

  theCommands.Add("lmirror",
		  "lmirror name [names...] x y z dx dy dz",
                  __FILE__,
		  transform,g);

  theCommands.Add("smirror",
		  "smirror name [names...] x y z dx dy dz",
                  __FILE__,
		  transform,g);

  theCommands.Add("pscale",
		  "pscale name [names...] x y z s",
                  __FILE__,
		  transform,g);

  theCommands.Add("2dtranslate",
		  "translate name [names...] dx dy",
                  __FILE__,
		  d2transform,g);

  theCommands.Add("2drotate",
		  "rotate name [names...] x y dx dy  angle",
                  __FILE__,
		  d2transform,g);

  theCommands.Add("2dpmirror",
		  "pmirror name [names...] x y",
                  __FILE__,
		  d2transform,g);

  theCommands.Add("2dlmirror",
		  "lmirror name [names...] x y dx dy",
                  __FILE__,
		  d2transform,g);

  theCommands.Add("2dpscale",
		  "pscale name [names...] x y s",
                  __FILE__,
		  d2transform,g);
}


//=================================================================
// save and restore curves
//=================================================================

static Standard_Boolean ctest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Curve));
}

static void csave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Curve) N = Handle(DrawTrSurf_Curve)::DownCast(d);
  GeomTools_CurveSet::PrintCurve(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) crestore (istream& is)
{
  Handle(Geom_Curve) G;
  GeomTools_CurveSet::ReadCurve(is,G);
  Handle(DrawTrSurf_Curve) N = 
    new DrawTrSurf_Curve(G,CurvColor,Discret,Deflection,DrawMode);
  return N;
}


static Draw_SaveAndRestore csr("DrawTrSurf_Curve",
			       ctest,csave,crestore);




//=================================================================
// save and restore bezier curves
//=================================================================

static Standard_Boolean bzctest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BezierCurve));
}

static void bzcsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BezierCurve) 
    N = Handle(DrawTrSurf_BezierCurve)::DownCast(d);
  GeomTools_CurveSet::PrintCurve(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bzcrestore (istream& is)
{
  Handle(Geom_BezierCurve) G;
  GeomTools_CurveSet::ReadCurve(is,G);
  Handle(DrawTrSurf_BezierCurve) N = 
    new DrawTrSurf_BezierCurve(G,CurvColor,PolesColor,ShowPoles,
			       Discret,Deflection,DrawMode);
  return N;
}


static Draw_SaveAndRestore bzcsr("DrawTrSurf_BezierCurve",
			       bzctest,bzcsave,bzcrestore);




//=================================================================
// save and restore bspline curves
//=================================================================

static Standard_Boolean bsctest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BSplineCurve));
}

static void bscsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BSplineCurve) 
    N = Handle(DrawTrSurf_BSplineCurve)::DownCast(d);
  GeomTools_CurveSet::PrintCurve(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bscrestore (istream& is)
{
  Handle(Geom_BSplineCurve) G;
  GeomTools_CurveSet::ReadCurve(is,G);
  Handle(DrawTrSurf_BSplineCurve) N = 
    new DrawTrSurf_BSplineCurve(G, CurvColor,PolesColor,
				KnotsColor,
				KnotsShape,KnotsSize,
				ShowPoles,ShowKnots,
				Discret,Deflection,DrawMode);
  return N;
}


static Draw_SaveAndRestore bscsr("DrawTrSurf_BSplineCurve",
			       bsctest,bscsave,bscrestore);


//=================================================================
// save and restore curves 2d
//=================================================================

static Standard_Boolean c2dtest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Curve2d));
}

static void c2dsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Curve2d) N = Handle(DrawTrSurf_Curve2d)::DownCast(d);
  GeomTools_Curve2dSet::PrintCurve2d(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) c2drestore (istream& is)
{
  Handle(Geom2d_Curve) G;
  GeomTools_Curve2dSet::ReadCurve2d(is,G);
  Handle(DrawTrSurf_Curve2d) N = 
    new DrawTrSurf_Curve2d(G,CurvColor,Discret);
  return N;
}


static Draw_SaveAndRestore c2dsr("DrawTrSurf_Curve2d",
			       c2dtest,c2dsave,c2drestore);




//=================================================================
// save and restore bezier curves 2d
//=================================================================

static Standard_Boolean bzc2dtest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BezierCurve2d));
}

static void bzc2dsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BezierCurve2d) 
    N = Handle(DrawTrSurf_BezierCurve2d)::DownCast(d);
  GeomTools_Curve2dSet::PrintCurve2d(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bzc2drestore (istream& is)
{
  Handle(Geom2d_BezierCurve) G;
  GeomTools_Curve2dSet::ReadCurve2d(is,G);
  Handle(DrawTrSurf_BezierCurve2d) N = 
    new DrawTrSurf_BezierCurve2d(G,CurvColor,PolesColor,ShowPoles,
			       Discret);
  return N;
}


static Draw_SaveAndRestore bzc2dsr("DrawTrSurf_BezierCurve2d",
			       bzc2dtest,bzc2dsave,bzc2drestore);




//=================================================================
// save and restore bspline curves 2d
//=================================================================

static Standard_Boolean bsc2dtest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BSplineCurve2d));
}

static void bsc2dsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BSplineCurve2d) 
    N = Handle(DrawTrSurf_BSplineCurve2d)::DownCast(d);
  GeomTools_Curve2dSet::PrintCurve2d(N->GetCurve(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bsc2drestore (istream& is)
{
  Handle(Geom2d_BSplineCurve) G;
  GeomTools_Curve2dSet::ReadCurve2d(is,G);
  Handle(DrawTrSurf_BSplineCurve2d) N = 
    new DrawTrSurf_BSplineCurve2d(G, CurvColor,PolesColor,
				KnotsColor,
				KnotsShape,KnotsSize,
				ShowPoles,ShowKnots,
				Discret);
  return N;
}


static Draw_SaveAndRestore bsc2dsr("DrawTrSurf_BSplineCurve2d",
			       bsc2dtest,bsc2dsave,bsc2drestore);


//=================================================================
// save and restore surfaces
//=================================================================

static Standard_Boolean stest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Surface));
}

static void ssave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Surface) N = Handle(DrawTrSurf_Surface)::DownCast(d);
  GeomTools_SurfaceSet::PrintSurface(N->GetSurface(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) srestore (istream& is)
{
  Handle(Geom_Surface) G;
  GeomTools_SurfaceSet::ReadSurface(is,G);
  Handle(DrawTrSurf_Surface) N = 
    new DrawTrSurf_Surface(G,
			   NbUIsos,NbVIsos,
			   BoundsColor,IsosColor,
			   Discret,Deflection,DrawMode);
  return N;
}


static Draw_SaveAndRestore ssr("DrawTrSurf_Surface",
			       stest,ssave,srestore);




//=================================================================
// save and restore bezier surfaces
//=================================================================

static Standard_Boolean bzstest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BezierSurface));
}

static void bzssave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BezierSurface) 
    N = Handle(DrawTrSurf_BezierSurface)::DownCast(d);
  GeomTools_SurfaceSet::PrintSurface(N->GetSurface(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bzsrestore (istream& is)
{
  Handle(Geom_BezierSurface) G;
  GeomTools_SurfaceSet::ReadSurface(is,G);
  Handle(DrawTrSurf_BezierSurface) N = 
    new DrawTrSurf_BezierSurface(G,NbUIsos,NbVIsos,
				 BoundsColor,IsosColor,PolesColor,
				 ShowPoles,
				 Discret,Deflection,DrawMode);
  return N;
}


static Draw_SaveAndRestore bzssr("DrawTrSurf_BezierSurface",
			       bzstest,bzssave,bzsrestore);




//=================================================================
// save and restore bspline surfaces
//=================================================================

static Standard_Boolean bsstest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_BSplineSurface));
}

static void bsssave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_BSplineSurface) 
    N = Handle(DrawTrSurf_BSplineSurface)::DownCast(d);
  GeomTools_SurfaceSet::PrintSurface(N->GetSurface(),OS,Standard_True);
}

static Handle(Draw_Drawable3D) bssrestore (istream& is)
{
  Handle(Geom_BSplineSurface) G;
  GeomTools_SurfaceSet::ReadSurface(is,G);
  Handle(DrawTrSurf_BSplineSurface) N;
  if (!knotsIsos) 
    N   = new DrawTrSurf_BSplineSurface(G,
					NbUIsos,NbVIsos,
					BoundsColor,IsosColor,
					PolesColor,KnotsColor,
					KnotsShape,KnotsSize,
					ShowPoles,ShowKnots,
					      Discret,Deflection,DrawMode);
  else
    N   = new DrawTrSurf_BSplineSurface(G,
					BoundsColor,IsosColor,
					PolesColor,KnotsColor,
					KnotsShape,KnotsSize,
					ShowPoles,ShowKnots,
					Discret,Deflection,DrawMode);
	
  return N;
}


static Draw_SaveAndRestore bsssr("DrawTrSurf_BSplineSurface",
			       bsstest,bsssave,bssrestore);


//=================================================================
// save and restore points
//=================================================================

static Standard_Boolean pnttest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Point));
}

static void pntsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Point) 
    N = Handle(DrawTrSurf_Point)::DownCast(d);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  ios::fmtflags F = OS.flags();
  OS.setf(ios::scientific,ios::floatfield);
  OS.precision(15);
#else
  long form = OS.setf(ios::scientific);
  std::streamsize prec = OS.precision(15);
#endif
  gp_Pnt P = N->Point();
  if (N->Is3D()) {
    OS << "1 ";
    OS << P.X() << " " << P.Y() << " " << P.Z() << "\n";
  }
  else {
    OS << "0 ";
    OS << P.X() << " " << P.Y() << "\n";
  }
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  OS.setf(F);
#else
  OS.setf(form);
  OS.precision(prec);
#endif
}

static Handle(Draw_Drawable3D) pntrestore (istream& is)
{
  Standard_Integer is3d;
  is >> is3d;
  Standard_Real x,y,z = 0.0;
  if (is3d)
    is >> x >> y >> z;
  else
    is >> x >> y;
  Handle(DrawTrSurf_Point) N;
  if (is3d)
    N = new DrawTrSurf_Point(gp_Pnt(x,y,z),PntShape,PntColor);
  else
    N = new DrawTrSurf_Point(gp_Pnt2d(x,y),PntShape,PntColor);
    
  return N;
}


static Draw_SaveAndRestore pntsr("DrawTrSurf_Point",
			       pnttest,pntsave,pntrestore);



//=================================================================
// save and restore triangulation
//=================================================================

static Standard_Boolean triatest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Triangulation));
}

static void triasave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Triangulation) 
    T = Handle(DrawTrSurf_Triangulation)::DownCast(d);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  ios::fmtflags F = OS.flags();
  OS.setf(ios::scientific,ios::floatfield);
  OS.precision(15);
#else
  long form = OS.setf(ios::scientific);
  std::streamsize prec = OS.precision(15);
#endif
  Poly::Write(T->Triangulation(),OS);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  OS.setf(F);
#else
  OS.setf(form);
  OS.precision(prec);
#endif
}

static Handle(Draw_Drawable3D) triarestore (istream& is)
{
  return new DrawTrSurf_Triangulation(Poly::ReadTriangulation(is));
}


static Draw_SaveAndRestore triasr("DrawTrSurf_Triangulation",
			       triatest,triasave,triarestore);



//=================================================================
// save and restore polygon3d
//=================================================================

static Standard_Boolean poly3dtest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Polygon3D));
}

static void poly3dsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Polygon3D) 
    T = Handle(DrawTrSurf_Polygon3D)::DownCast(d);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  ios::fmtflags F = OS.flags();
  OS.setf(ios::scientific,ios::floatfield);
  OS.precision(15);
#else
  long form = OS.setf(ios::scientific);
  std::streamsize prec = OS.precision(15);
#endif
  Poly::Write(T->Polygon3D(),OS);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  OS.setf(F);
#else
  OS.setf(form);
  OS.precision(prec);
#endif
}

static Handle(Draw_Drawable3D) poly3drestore (istream& is)
{
  return new DrawTrSurf_Polygon3D(Poly::ReadPolygon3D(is));
}


static Draw_SaveAndRestore poly3dsr("DrawTrSurf_Polygon3D",
			       poly3dtest,poly3dsave,poly3drestore);


//=================================================================
// save and restore polygon2d
//=================================================================

static Standard_Boolean poly2dtest(const Handle(Draw_Drawable3D)& d) 
{
  return d->IsInstance(STANDARD_TYPE(DrawTrSurf_Polygon2D));
}

static void poly2dsave(const Handle(Draw_Drawable3D)&d, ostream& OS)
{
  Handle(DrawTrSurf_Polygon2D) 
    T = Handle(DrawTrSurf_Polygon2D)::DownCast(d);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  ios::fmtflags F = OS.flags();
  OS.setf(ios::scientific, ios::floatfield);
  OS.precision(15);
#else
  long form = OS.setf(ios::scientific);
  std::streamsize prec = OS.precision(15);
#endif
  Poly::Write(T->Polygon2D(),OS);
#if defined(HAVE_IOS) && !defined(__sgi) && !defined(IRIX)
  OS.setf(F);
#else
  OS.setf(form);
  OS.precision(prec);
#endif
}

static Handle(Draw_Drawable3D) poly2drestore (istream& is)
{
  return new DrawTrSurf_Polygon2D(Poly::ReadPolygon2D(is));
}


static Draw_SaveAndRestore poly2dsr("DrawTrSurf_Polygon2D",
			       poly2dtest,poly2dsave,poly2drestore);