[occt.git] / src / AIS / AIS_PerpendicularRelation.cxx

// Created on: 1996-12-05
// Created by: Jean-Pierre COMBE/Odile Olivier
// Copyright (c) 1996-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <Standard_NotImplemented.hxx>

#include <AIS_PerpendicularRelation.ixx>

#include <AIS.hxx>

#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <BRep_Tool.hxx>

#include <DsgPrs_PerpenPresentation.hxx>

#include <ElCLib.hxx>

#include <Geom2d_Line.hxx>
#include <GeomAPI.hxx>
#include <Geom_Line.hxx>
#include <Geom_Line.hxx>
#include <Geom_Plane.hxx>

#include <IntAna2d_AnaIntersection.hxx>
#include <IntAna2d_IntPoint.hxx>

#include <Precision.hxx>

#include <Select3D_SensitiveSegment.hxx>
#include <SelectMgr_EntityOwner.hxx>
#include <SelectMgr_Selection.hxx>

#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Vertex.hxx>

#include <gce_MakeDir.hxx>

#include <gp_Pln.hxx>
#include <gp_Pnt.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Trsf.hxx>
#include <gp_Vec.hxx>
#include <Geom_Ellipse.hxx>

//=======================================================================
//function : Constructor
//purpose  : TwoEdgesPerpendicular
//=======================================================================
AIS_PerpendicularRelation::AIS_PerpendicularRelation(const TopoDS_Shape& aFShape, 
						     const TopoDS_Shape& aSShape, 
						     const Handle(Geom_Plane)& aPlane)
:AIS_Relation()
{
  myFShape = aFShape;
  mySShape = aSShape;
  myPlane = aPlane;
}

//=======================================================================
//function : Constructor
//purpose  : TwoFacesPerpendicular
//=======================================================================
AIS_PerpendicularRelation::AIS_PerpendicularRelation(const TopoDS_Shape& aFShape, 
						     const TopoDS_Shape& aSShape)
:AIS_Relation()
{
  myFShape = aFShape;
  mySShape = aSShape;
}

//=======================================================================
//function : Compute
//purpose  : 
//=======================================================================
void AIS_PerpendicularRelation::Compute(const Handle(PrsMgr_PresentationManager3d)&, 
					const Handle(Prs3d_Presentation)& aPresentation, 
					const Standard_Integer)
{
  aPresentation->Clear();

  if (myFShape.ShapeType() == mySShape.ShapeType()) {
    switch (myFShape.ShapeType()) {
    case TopAbs_FACE :
      {
	// cas perpendiculaire entre deux faces
	ComputeTwoFacesPerpendicular(aPresentation);
      }
      break;
    case TopAbs_EDGE :
      {
	// cas perpendiculaire entre deux edges
	ComputeTwoEdgesPerpendicular(aPresentation);
      }
      break;
    default:
      break;
    }
  }
  // Cas pas traite - Edge/Face
}

//=======================================================================
//function : Compute
//purpose  : to avoid warning
//=======================================================================
void AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)& aProjector,
					const Handle(Prs3d_Presentation)& aPresentation)
{
// Standard_NotImplemented::Raise("AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)&,const Handle(Prs3d_Presentation)&)");
 PrsMgr_PresentableObject::Compute( aProjector , aPresentation ) ;
}

void AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)& aProjector, const Handle(Geom_Transformation)& aTransformation, const Handle(Prs3d_Presentation)& aPresentation)
{
// Standard_NotImplemented::Raise("AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)&, const Handle(Geom_Transformation)&, const Handle(Prs3d_Presentation)&)");
 PrsMgr_PresentableObject::Compute( aProjector , aTransformation , aPresentation ) ;
}

//=======================================================================
//function : ComputeSelection
//purpose  : 
//=======================================================================
void AIS_PerpendicularRelation::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection, 
						 const Standard_Integer)
{
  Handle(SelectMgr_EntityOwner) own = new SelectMgr_EntityOwner(this,7);
  const gp_Pnt& pos = myPosition;
  Handle(Select3D_SensitiveSegment) seg;
  Standard_Boolean ok1(Standard_False),ok2(Standard_False);

  if (!myFAttach.IsEqual(pos,Precision::Confusion())) {
    seg = new Select3D_SensitiveSegment(own,
					myFAttach,
					pos);
    aSelection->Add(seg);
    ok1 = Standard_True;
 }
  if (!mySAttach.IsEqual(myPosition,Precision::Confusion())) {
    seg = new Select3D_SensitiveSegment(own,
					mySAttach,
					pos);
    aSelection->Add(seg);
    ok2 = Standard_True;
  }

  if (ok1 && ok2) {
    gp_Vec vec1(gce_MakeDir(pos,myFAttach));
    gp_Vec vec2(gce_MakeDir(pos,mySAttach));
    Standard_Real dist1(pos.Distance(myFAttach));
    Standard_Real dist2(pos.Distance(mySAttach));
    vec1 *= dist1;
    vec1 *= .2;
    vec2 *= dist2;
    vec2 *= .2;
    
    gp_Pnt pAx11 = pos.Translated(vec1);
    gp_Pnt pAx22 = pos.Translated(vec2);
    gp_Pnt p_symb = pAx22.Translated(vec1);
    seg = new Select3D_SensitiveSegment(own,pAx11,p_symb);
    aSelection->Add(seg);
    seg = new Select3D_SensitiveSegment(own,p_symb,pAx22);
    aSelection->Add(seg);
  }
}

//=======================================================================
//function : ComputeTwoFacesPerpendicular
//purpose  : 
//=======================================================================
void AIS_PerpendicularRelation::ComputeTwoFacesPerpendicular
  (const Handle(Prs3d_Presentation)& /*aPresentation*/)
{
}

//=======================================================================
//function : ComputeTwoEdgesPerpendicular
//purpose  : 
//=======================================================================
void AIS_PerpendicularRelation::ComputeTwoEdgesPerpendicular(const Handle(Prs3d_Presentation)& aPresentation)
{
  // 3d lines
  Handle(Geom_Curve) geom1,geom2;
  gp_Pnt pint3d,p1,p2,pAx1,pAx2,ptat11,ptat12,ptat21,ptat22;
  Standard_Boolean isInfinite1,isInfinite2;
  Handle(Geom_Curve) extCurv;
  if ( !AIS::ComputeGeometry(TopoDS::Edge(myFShape),TopoDS::Edge(mySShape),
			    myExtShape,
			    geom1,geom2,
			    ptat11,ptat12,ptat21,ptat22,
			    extCurv,
			    isInfinite1,isInfinite2,
			    myPlane) ) return;

  Standard_Boolean interOut1(Standard_False),interOut2(Standard_False);
  
  Handle(Geom_Line) geom_lin1;
  Handle(Geom_Line) geom_lin2;
  if ( geom1->IsInstance(STANDARD_TYPE(Geom_Ellipse)) )
    {
      Handle(Geom_Ellipse) geom_el (Handle(Geom_Ellipse)::DownCast (geom1));
      // construct lines through focuses
      gp_Ax1 elAx = geom_el->XAxis();
      gp_Lin ll (elAx);
      geom_lin1 = new Geom_Line(ll);
      Standard_Real focex = geom_el->MajorRadius() - geom_el->Focal()/2.0;
      gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
      ptat11 = geom_el->Focus1().Translated(transvec);
      ptat12 = geom_el->Focus2().Translated(-transvec);
      interOut1 = Standard_True;
    }
  else if ( geom1->IsInstance(STANDARD_TYPE(Geom_Line)) )
    {
      geom_lin1 = Handle(Geom_Line)::DownCast (geom1);
    }
  else return;

  if (geom2->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
    {
      Handle(Geom_Ellipse) geom_el (Handle(Geom_Ellipse)::DownCast (geom2));
      // construct lines through focuses
      gp_Ax1 elAx = geom_el->XAxis();
      gp_Lin ll (elAx);
      geom_lin2 = new Geom_Line(ll);
      Standard_Real focex = geom_el->MajorRadius() - geom_el->Focal()/2.0;
      gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
      ptat21 = geom_el->Focus1().Translated(transvec);
      ptat22 = geom_el->Focus2().Translated(-transvec);
      interOut2 = Standard_True;
    }
  else if ( geom2->IsInstance(STANDARD_TYPE(Geom_Line)) )
    {
      geom_lin2 = Handle(Geom_Line)::DownCast (geom2);
    }
  else return;

  // current face
  BRepBuilderAPI_MakeFace makeface (myPlane->Pln());
  TopoDS_Face face (makeface.Face());  
  BRepAdaptor_Surface adp (makeface.Face());
  
  // 2d lines => projection of 3d on current plane
  Handle(Geom2d_Curve) aGeom2dCurve = GeomAPI::To2d(geom_lin1,myPlane->Pln());
  Handle(Geom2d_Line) lin1_2d = Handle(Geom2d_Line)::DownCast (aGeom2dCurve) ;
  aGeom2dCurve = GeomAPI::To2d(geom_lin2,myPlane->Pln());
  Handle(Geom2d_Line) lin2_2d = Handle(Geom2d_Line)::DownCast (aGeom2dCurve) ;
  IntAna2d_AnaIntersection inter(lin1_2d->Lin2d(),lin2_2d->Lin2d());
  if (!inter.IsDone()) return;
  if (!inter.NbPoints()) return;
  
  gp_Pnt2d pint(inter.Point(1).Value());
  pint3d = adp.Value(pint.X(),pint.Y());

  myPosition = pint3d;
  // recherche points attache
  Standard_Real par1,par2,curpar,pmin,pmax;//,dist,sign;
  Standard_Real length(0.);
  
  if ( isInfinite1 && isInfinite2 )
    {
      Standard_Real curpar1 = ElCLib::Parameter(geom_lin1->Lin(),pint3d);
      Standard_Real curpar2 = ElCLib::Parameter(geom_lin2->Lin(),pint3d);
      par1 = par2 = 50.;    
      p1 = p2 = pint3d;
      myFAttach = ElCLib::Value(curpar1+par1,geom_lin1->Lin());
      mySAttach = ElCLib::Value(curpar2+par2,geom_lin2->Lin());    
    }
  else
    {
      Standard_Boolean lengthComputed (Standard_False);
      if ( !isInfinite1 )
	{
	  curpar = ElCLib::Parameter(geom_lin1->Lin(),pint3d);
	  par1 = ElCLib::Parameter(geom_lin1->Lin(),ptat11);
	  par2 = ElCLib::Parameter(geom_lin1->Lin(),ptat12);
	  pmin = Min(par1,par2);
	  pmax = Max(par1,par2);
      
	  if ( myPosition.SquareDistance(ptat11) > myPosition.SquareDistance(ptat12) )
	    p1 = ptat11;
	  else
	    p1 = ptat12;
	  if ( (curpar < pmin) || (curpar > pmax) )
	    {
	      interOut1 = Standard_True;
	    }
	  if ( !isInfinite2 ) length = 2.*Min(ptat11.Distance(ptat12),ptat21.Distance(ptat22))/5.;
	  else length = 2.*ptat11.Distance(ptat12)/5.;
	  lengthComputed = Standard_True;
	  gp_Vec vec1 (gce_MakeDir(myPosition,p1));
	  vec1.Multiply(length);
	  pAx1 = myPosition.Translated(vec1);
	  myFAttach = pAx1;
	}
      if ( !isInfinite2 )
	{
	  curpar = ElCLib::Parameter(geom_lin2->Lin(),pint3d);
	  par1 = ElCLib::Parameter(geom_lin2->Lin(),ptat21);
	  par2 = ElCLib::Parameter(geom_lin2->Lin(),ptat22);
	  pmin = Min(par1,par2);
	  pmax = Max(par1,par2);
	  
	  if ( myPosition.SquareDistance(ptat21) > myPosition.SquareDistance(ptat22) ) p2 = ptat21;
	  else p2 = ptat22;
	  if ( (curpar < pmin) || (curpar > pmax) )
	    {
	      interOut2 = Standard_True;
	    }
	  gp_Vec vec2 (gce_MakeDir(myPosition,p2));
	  if ( !lengthComputed )
	    {
	      if ( !isInfinite1 ) length = 2.*Min(ptat11.Distance(ptat12),ptat21.Distance(ptat22))/5.;
	      else length = 2.*ptat21.Distance(ptat22)/5.;
	    }
	  vec2.Multiply(length);
	  pAx2 = myPosition.Translated(vec2);
	  mySAttach = pAx2;
	}
      if ( isInfinite1 )
	{
	  p1 = myPosition;
	  gp_Vec vec1(geom_lin1->Lin().Direction());
	  vec1.Multiply(length);
	  myFAttach = myPosition.Translated(vec1);
	}
      if ( isInfinite2 )
	{
	  p2 = myPosition;
	  gp_Vec vec2(geom_lin2->Lin().Direction());
	  vec2.Multiply(length);
	  mySAttach = myPosition.Translated(vec2);      
	}
    }
  DsgPrs_PerpenPresentation::Add(aPresentation,myDrawer,
				 myFAttach,mySAttach,
				 p1,p2,
				 myPosition,
				 interOut1,interOut2);

  if ( (myExtShape != 0) && !extCurv.IsNull()) {
    gp_Pnt pf,pl;
    if ( myExtShape == 1 ) {
      if (!isInfinite1) {
	pf = ptat11; 
	pl = ptat12;
      }
      aPresentation->SetInfiniteState(isInfinite1);
      ComputeProjEdgePresentation(aPresentation,TopoDS::Edge(myFShape),geom_lin1,pf,pl);
    }
    else {
      if (!isInfinite2) {
	pf = ptat21; 
	pl = ptat22;
      }
      aPresentation->SetInfiniteState(isInfinite2);
      ComputeProjEdgePresentation(aPresentation,TopoDS::Edge(mySShape),geom_lin2,pf,pl);
    }
  }
}
Commit	Line	Data
b311480e	1	// Created on: 1996-12-05
	2	// Created by: Jean-Pierre COMBE/Odile Olivier
	3	// Copyright (c) 1996-1999 Matra Datavision
973c2be1	4	// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e	5	//
973c2be1	6	// This file is part of Open CASCADE Technology software library.
b311480e	7	//
d5f74e42	8	// This library is free software; you can redistribute it and/or modify it under
d5f74e42	9	// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1	10	// by the Free Software Foundation, with special exception defined in the file
	11	// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
	12	// distribution for complete text of the license and disclaimer of any warranty.
b311480e	13	//
973c2be1	14	// Alternatively, this file may be used under the terms of Open CASCADE
973c2be1	15	// commercial license or contractual agreement.
7fd59977	16
	17	#include <Standard_NotImplemented.hxx>
	18
	19	#include <AIS_PerpendicularRelation.ixx>
	20
	21	#include <AIS.hxx>
	22
	23	#include <BRepBuilderAPI_MakeFace.hxx>
	24	#include <BRepAdaptor_Surface.hxx>
	25	#include <BRep_Tool.hxx>
	26
	27	#include <DsgPrs_PerpenPresentation.hxx>
	28
	29	#include <ElCLib.hxx>
	30
	31	#include <Geom2d_Line.hxx>
	32	#include <GeomAPI.hxx>
	33	#include <Geom_Line.hxx>
	34	#include <Geom_Line.hxx>
	35	#include <Geom_Plane.hxx>
	36
	37	#include <IntAna2d_AnaIntersection.hxx>
	38	#include <IntAna2d_IntPoint.hxx>
	39
	40	#include <Precision.hxx>
	41
	42	#include <Select3D_SensitiveSegment.hxx>
	43	#include <SelectMgr_EntityOwner.hxx>
f751596e	44	#include <SelectMgr_Selection.hxx>
7fd59977	45
	46	#include <TopoDS.hxx>
	47	#include <TopoDS_Edge.hxx>
	48	#include <TopoDS_Face.hxx>
	49	#include <TopoDS_Vertex.hxx>
	50
	51	#include <gce_MakeDir.hxx>
	52
	53	#include <gp_Pln.hxx>
	54	#include <gp_Pnt.hxx>
	55	#include <gp_Pnt2d.hxx>
	56	#include <gp_Trsf.hxx>
	57	#include <gp_Vec.hxx>
	58	#include <Geom_Ellipse.hxx>
	59
	60	//=======================================================================
	61	//function : Constructor
	62	//purpose : TwoEdgesPerpendicular
	63	//=======================================================================
	64	AIS_PerpendicularRelation::AIS_PerpendicularRelation(const TopoDS_Shape& aFShape,
	65	const TopoDS_Shape& aSShape,
	66	const Handle(Geom_Plane)& aPlane)
	67	:AIS_Relation()
	68	{
	69	myFShape = aFShape;
	70	mySShape = aSShape;
	71	myPlane = aPlane;
	72	}
	73
	74	//=======================================================================
	75	//function : Constructor
	76	//purpose : TwoFacesPerpendicular
	77	//=======================================================================
	78	AIS_PerpendicularRelation::AIS_PerpendicularRelation(const TopoDS_Shape& aFShape,
	79	const TopoDS_Shape& aSShape)
	80	:AIS_Relation()
	81	{
	82	myFShape = aFShape;
	83	mySShape = aSShape;
	84	}
	85
	86	//=======================================================================
	87	//function : Compute
	88	//purpose :
	89	//=======================================================================
	90	void AIS_PerpendicularRelation::Compute(const Handle(PrsMgr_PresentationManager3d)&,
	91	const Handle(Prs3d_Presentation)& aPresentation,
	92	const Standard_Integer)
	93	{
	94	aPresentation->Clear();
	95
	96	if (myFShape.ShapeType() == mySShape.ShapeType()) {
	97	switch (myFShape.ShapeType()) {
	98	case TopAbs_FACE :
	99	{
	100	// cas perpendiculaire entre deux faces
	101	ComputeTwoFacesPerpendicular(aPresentation);
	102	}
	103	break;
	104	case TopAbs_EDGE :
	105	{
	106	// cas perpendiculaire entre deux edges
	107	ComputeTwoEdgesPerpendicular(aPresentation);
	108	}
109	break;
110	default:
111	break;
112	}
113	}
114	// Cas pas traite - Edge/Face
115	}
116
117	//=======================================================================
118	//function : Compute
119	//purpose : to avoid warning
120	//=======================================================================
121	void AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)& aProjector,
122	const Handle(Prs3d_Presentation)& aPresentation)
123	{
124	// Standard_NotImplemented::Raise("AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)&,const Handle(Prs3d_Presentation)&)");
125	PrsMgr_PresentableObject::Compute( aProjector , aPresentation ) ;
126	}
127
857ffd5e	128	void AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)& aProjector, const Handle(Geom_Transformation)& aTransformation, const Handle(Prs3d_Presentation)& aPresentation)
7fd59977	129	{
857ffd5e	130	// Standard_NotImplemented::Raise("AIS_PerpendicularRelation::Compute(const Handle(Prs3d_Projector)&, const Handle(Geom_Transformation)&, const Handle(Prs3d_Presentation)&)");
7fd59977	131	PrsMgr_PresentableObject::Compute( aProjector , aTransformation , aPresentation ) ;
	132	}
	133
	134	//=======================================================================
	135	//function : ComputeSelection
	136	//purpose :
	137	//=======================================================================
	138	void AIS_PerpendicularRelation::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
	139	const Standard_Integer)
	140	{
	141	Handle(SelectMgr_EntityOwner) own = new SelectMgr_EntityOwner(this,7);
	142	const gp_Pnt& pos = myPosition;
	143	Handle(Select3D_SensitiveSegment) seg;
	144	Standard_Boolean ok1(Standard_False),ok2(Standard_False);
	145
	146	if (!myFAttach.IsEqual(pos,Precision::Confusion())) {
	147	seg = new Select3D_SensitiveSegment(own,
	148	myFAttach,
	149	pos);
	150	aSelection->Add(seg);
	151	ok1 = Standard_True;
	152	}
	153	if (!mySAttach.IsEqual(myPosition,Precision::Confusion())) {
	154	seg = new Select3D_SensitiveSegment(own,
	155	mySAttach,
	156	pos);
	157	aSelection->Add(seg);
	158	ok2 = Standard_True;
	159	}
	160
	161	if (ok1 && ok2) {
	162	gp_Vec vec1(gce_MakeDir(pos,myFAttach));
	163	gp_Vec vec2(gce_MakeDir(pos,mySAttach));
	164	Standard_Real dist1(pos.Distance(myFAttach));
	165	Standard_Real dist2(pos.Distance(mySAttach));
	166	vec1 *= dist1;
	167	vec1 *= .2;
	168	vec2 *= dist2;
	169	vec2 *= .2;
	170
	171	gp_Pnt pAx11 = pos.Translated(vec1);
	172	gp_Pnt pAx22 = pos.Translated(vec2);
	173	gp_Pnt p_symb = pAx22.Translated(vec1);
	174	seg = new Select3D_SensitiveSegment(own,pAx11,p_symb);
	175	aSelection->Add(seg);
	176	seg = new Select3D_SensitiveSegment(own,p_symb,pAx22);
	177	aSelection->Add(seg);
	178	}
	179	}
	180
	181	//=======================================================================
	182	//function : ComputeTwoFacesPerpendicular
	183	//purpose :
	184	//=======================================================================
	185	void AIS_PerpendicularRelation::ComputeTwoFacesPerpendicular
	186	(const Handle(Prs3d_Presentation)& /aPresentation/)
	187	{
	188	}
	189
	190	//=======================================================================
	191	//function : ComputeTwoEdgesPerpendicular
	192	//purpose :
	193	//=======================================================================
	194	void AIS_PerpendicularRelation::ComputeTwoEdgesPerpendicular(const Handle(Prs3d_Presentation)& aPresentation)
195	{
196	// 3d lines
197	Handle(Geom_Curve) geom1,geom2;
198	gp_Pnt pint3d,p1,p2,pAx1,pAx2,ptat11,ptat12,ptat21,ptat22;
199	Standard_Boolean isInfinite1,isInfinite2;
200	Handle(Geom_Curve) extCurv;
201	if ( !AIS::ComputeGeometry(TopoDS::Edge(myFShape),TopoDS::Edge(mySShape),
202	myExtShape,
203	geom1,geom2,
204	ptat11,ptat12,ptat21,ptat22,
205	extCurv,
206	isInfinite1,isInfinite2,
207	myPlane) ) return;
208
209	Standard_Boolean interOut1(Standard_False),interOut2(Standard_False);
210
211	Handle(Geom_Line) geom_lin1;
212	Handle(Geom_Line) geom_lin2;
213	if ( geom1->IsInstance(STANDARD_TYPE(Geom_Ellipse)) )
214	{
c5f3a425	215	Handle(Geom_Ellipse) geom_el (Handle(Geom_Ellipse)::DownCast (geom1));
7fd59977	216	// construct lines through focuses
	217	gp_Ax1 elAx = geom_el->XAxis();
	218	gp_Lin ll (elAx);
	219	geom_lin1 = new Geom_Line(ll);
	220	Standard_Real focex = geom_el->MajorRadius() - geom_el->Focal()/2.0;
	221	gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
	222	ptat11 = geom_el->Focus1().Translated(transvec);
	223	ptat12 = geom_el->Focus2().Translated(-transvec);
	224	interOut1 = Standard_True;
	225	}
	226	else if ( geom1->IsInstance(STANDARD_TYPE(Geom_Line)) )
	227	{
c5f3a425	228	geom_lin1 = Handle(Geom_Line)::DownCast (geom1);
7fd59977	229	}
	230	else return;
	231
	232	if (geom2->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
	233	{
c5f3a425	234	Handle(Geom_Ellipse) geom_el (Handle(Geom_Ellipse)::DownCast (geom2));
7fd59977	235	// construct lines through focuses
	236	gp_Ax1 elAx = geom_el->XAxis();
	237	gp_Lin ll (elAx);
	238	geom_lin2 = new Geom_Line(ll);
	239	Standard_Real focex = geom_el->MajorRadius() - geom_el->Focal()/2.0;
	240	gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
	241	ptat21 = geom_el->Focus1().Translated(transvec);
	242	ptat22 = geom_el->Focus2().Translated(-transvec);
	243	interOut2 = Standard_True;
	244	}
	245	else if ( geom2->IsInstance(STANDARD_TYPE(Geom_Line)) )
	246	{
c5f3a425	247	geom_lin2 = Handle(Geom_Line)::DownCast (geom2);
7fd59977	248	}
	249	else return;
	250
	251	// current face
	252	BRepBuilderAPI_MakeFace makeface (myPlane->Pln());
	253	TopoDS_Face face (makeface.Face());
	254	BRepAdaptor_Surface adp (makeface.Face());
	255
	256	// 2d lines => projection of 3d on current plane
	257	Handle(Geom2d_Curve) aGeom2dCurve = GeomAPI::To2d(geom_lin1,myPlane->Pln());
c5f3a425	258	Handle(Geom2d_Line) lin1_2d = Handle(Geom2d_Line)::DownCast (aGeom2dCurve) ;
7fd59977	259	aGeom2dCurve = GeomAPI::To2d(geom_lin2,myPlane->Pln());
c5f3a425	260	Handle(Geom2d_Line) lin2_2d = Handle(Geom2d_Line)::DownCast (aGeom2dCurve) ;
7fd59977	261	IntAna2d_AnaIntersection inter(lin1_2d->Lin2d(),lin2_2d->Lin2d());
	262	if (!inter.IsDone()) return;
	263	if (!inter.NbPoints()) return;
	264
	265	gp_Pnt2d pint(inter.Point(1).Value());
	266	pint3d = adp.Value(pint.X(),pint.Y());
	267
	268	myPosition = pint3d;
	269	// recherche points attache
	270	Standard_Real par1,par2,curpar,pmin,pmax;//,dist,sign;
	271	Standard_Real length(0.);
	272
	273	if ( isInfinite1 && isInfinite2 )
	274	{
	275	Standard_Real curpar1 = ElCLib::Parameter(geom_lin1->Lin(),pint3d);
	276	Standard_Real curpar2 = ElCLib::Parameter(geom_lin2->Lin(),pint3d);
	277	par1 = par2 = 50.;
	278	p1 = p2 = pint3d;
	279	myFAttach = ElCLib::Value(curpar1+par1,geom_lin1->Lin());
	280	mySAttach = ElCLib::Value(curpar2+par2,geom_lin2->Lin());
	281	}
	282	else
	283	{
	284	Standard_Boolean lengthComputed (Standard_False);
	285	if ( !isInfinite1 )
	286	{
	287	curpar = ElCLib::Parameter(geom_lin1->Lin(),pint3d);
	288	par1 = ElCLib::Parameter(geom_lin1->Lin(),ptat11);
	289	par2 = ElCLib::Parameter(geom_lin1->Lin(),ptat12);
	290	pmin = Min(par1,par2);
	291	pmax = Max(par1,par2);
	292
	293	if ( myPosition.SquareDistance(ptat11) > myPosition.SquareDistance(ptat12) )
	294	p1 = ptat11;
	295	else
	296	p1 = ptat12;
	297	if ( (curpar < pmin) \|\| (curpar > pmax) )
	298	{
	299	interOut1 = Standard_True;
	300	}
	301	if ( !isInfinite2 ) length = 2.*Min(ptat11.Distance(ptat12),ptat21.Distance(ptat22))/5.;
	302	else length = 2.*ptat11.Distance(ptat12)/5.;
	303	lengthComputed = Standard_True;
	304	gp_Vec vec1 (gce_MakeDir(myPosition,p1));
	305	vec1.Multiply(length);
	306	pAx1 = myPosition.Translated(vec1);
	307	myFAttach = pAx1;
	308	}
	309	if ( !isInfinite2 )
	310	{
	311	curpar = ElCLib::Parameter(geom_lin2->Lin(),pint3d);
	312	par1 = ElCLib::Parameter(geom_lin2->Lin(),ptat21);
	313	par2 = ElCLib::Parameter(geom_lin2->Lin(),ptat22);
	314	pmin = Min(par1,par2);
	315	pmax = Max(par1,par2);
	316
	317	if ( myPosition.SquareDistance(ptat21) > myPosition.SquareDistance(ptat22) ) p2 = ptat21;
	318	else p2 = ptat22;
	319	if ( (curpar < pmin) \|\| (curpar > pmax) )
	320	{
	321	interOut2 = Standard_True;
	322	}
	323	gp_Vec vec2 (gce_MakeDir(myPosition,p2));
	324	if ( !lengthComputed )
325	{
326	if ( !isInfinite1 ) length = 2.*Min(ptat11.Distance(ptat12),ptat21.Distance(ptat22))/5.;
327	else length = 2.*ptat21.Distance(ptat22)/5.;
328	}
329	vec2.Multiply(length);
330	pAx2 = myPosition.Translated(vec2);
331	mySAttach = pAx2;
332	}
333	if ( isInfinite1 )
334	{
335	p1 = myPosition;
336	gp_Vec vec1(geom_lin1->Lin().Direction());
337	vec1.Multiply(length);
338	myFAttach = myPosition.Translated(vec1);
339	}
340	if ( isInfinite2 )
341	{
342	p2 = myPosition;
343	gp_Vec vec2(geom_lin2->Lin().Direction());
344	vec2.Multiply(length);
345	mySAttach = myPosition.Translated(vec2);
346	}
347	}
348	DsgPrs_PerpenPresentation::Add(aPresentation,myDrawer,
349	myFAttach,mySAttach,
350	p1,p2,
351	myPosition,
352	interOut1,interOut2);
353
354	if ( (myExtShape != 0) && !extCurv.IsNull()) {
355	gp_Pnt pf,pl;
356	if ( myExtShape == 1 ) {
357	if (!isInfinite1) {
358	pf = ptat11;
359	pl = ptat12;
360	}
361	aPresentation->SetInfiniteState(isInfinite1);
362	ComputeProjEdgePresentation(aPresentation,TopoDS::Edge(myFShape),geom_lin1,pf,pl);
363	}
364	else {
365	if (!isInfinite2) {
366	pf = ptat21;
367	pl = ptat22;
368	}
369	aPresentation->SetInfiniteState(isInfinite2);
370	ComputeProjEdgePresentation(aPresentation,TopoDS::Edge(mySShape),geom_lin2,pf,pl);
371	}
372	}
373	}