[occt.git] / src / AIS / AIS_ParallelRelation.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 <AIS.hxx>
#include <AIS_ParallelRelation.hxx>
#include <BRep_Tool.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <DsgPrs_LengthPresentation.hxx>
#include <ElCLib.hxx>
#include <gce_MakeLin.hxx>
#include <Geom_Ellipse.hxx>
#include <Geom_Line.hxx>
#include <Geom_Plane.hxx>
#include <Geom_Transformation.hxx>
#include <gp_Ax1.hxx>
#include <gp_Ax2.hxx>
#include <gp_Dir.hxx>
#include <gp_Lin.hxx>
#include <gp_Pln.hxx>
#include <gp_Pnt.hxx>
#include <Precision.hxx>
#include <Prs3d_ArrowAspect.hxx>
#include <Prs3d_DimensionAspect.hxx>
#include <Prs3d_Drawer.hxx>
#include <Prs3d_Presentation.hxx>
#include <Select3D_SensitiveBox.hxx>
#include <Select3D_SensitiveSegment.hxx>
#include <SelectMgr_EntityOwner.hxx>
#include <SelectMgr_Selection.hxx>
#include <Standard_DomainError.hxx>
#include <Standard_NotImplemented.hxx>
#include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx>
#include <TCollection_ExtendedString.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>

IMPLEMENT_STANDARD_RTTIEXT(AIS_ParallelRelation,AIS_Relation)

//=======================================================================
//function : Constructor
//purpose  : 
//=======================================================================
AIS_ParallelRelation::AIS_ParallelRelation(const TopoDS_Shape& aFShape, 
					   const TopoDS_Shape& aSShape, 
					   const Handle(Geom_Plane)& aPlane)
{
  myFShape = aFShape;
  mySShape = aSShape;
  myPlane = aPlane;
  myAutomaticPosition = Standard_True;
  myArrowSize = 0.01;
  mySymbolPrs = DsgPrs_AS_BOTHAR;
}

//=======================================================================
//function : Constructor
//purpose  : 
//=======================================================================
AIS_ParallelRelation::AIS_ParallelRelation(const TopoDS_Shape& aFShape, 
					   const TopoDS_Shape& aSShape, 
					   const Handle(Geom_Plane)& aPlane, 
					   const gp_Pnt& aPosition,
					   const DsgPrs_ArrowSide aSymbolPrs, 
					   const Standard_Real anArrowSize)
{
  myFShape = aFShape;
  mySShape = aSShape;
  myPlane = aPlane;
  myAutomaticPosition = Standard_False;
  SetArrowSize( anArrowSize );
  myPosition = aPosition;
  mySymbolPrs = aSymbolPrs;
}

//=======================================================================
//function : Compute
//purpose  : 
//=======================================================================
void AIS_ParallelRelation::Compute(const Handle(PrsMgr_PresentationManager3d)&, 
				   const Handle(Prs3d_Presentation)& aPresentation, 
				   const Standard_Integer)
{
  switch (myFShape.ShapeType())
    {
    case TopAbs_FACE :
      {
	// cas longueur entre deux faces
	ComputeTwoFacesParallel(aPresentation);
      }
      break;
    case TopAbs_EDGE :
      {
	// cas longueur entre deux edges
	ComputeTwoEdgesParallel(aPresentation);
      }
      break;
    default:
      break;
    }
}

//=======================================================================
//function : ComputeSelection
//purpose  : 
//=======================================================================
void AIS_ParallelRelation::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection, 
					    const Standard_Integer)
{
  gp_Lin L1 (myFAttach,myDirAttach);
  gp_Lin L2 (mySAttach,myDirAttach);
  gp_Pnt Proj1 = ElCLib::Value(ElCLib::Parameter(L1,myPosition),L1);
  gp_Pnt Proj2 = ElCLib::Value(ElCLib::Parameter(L2,myPosition),L2);
  
  gp_Lin L3;
  Handle(SelectMgr_EntityOwner) own = new SelectMgr_EntityOwner(this,7);

  if (!Proj1.IsEqual(Proj2,Precision::Confusion()))
    {
      L3 = gce_MakeLin(Proj1,Proj2);
    }
  else
    {
      L3 = gce_MakeLin(Proj1,myDirAttach);
      Standard_Real size(Min(myVal/100.+1.e-6,myArrowSize+1.e-6));
      Handle(Select3D_SensitiveBox) box =
	new Select3D_SensitiveBox(own,
				  myPosition.X(),
				  myPosition.Y(),
				  myPosition.Z(),
				  myPosition.X()+size,
				  myPosition.Y()+size,
				  myPosition.Z()+size);
      aSelection->Add(box);
    }
  Standard_Real parmin,parmax,parcur;
  parmin = ElCLib::Parameter(L3,Proj1);
  parmax = parmin;
  
  parcur = ElCLib::Parameter(L3,Proj2);
  parmin = Min(parmin,parcur);
  parmax = Max(parmax,parcur);
  
  parcur = ElCLib::Parameter(L3,myPosition);
  parmin = Min(parmin,parcur);
  parmax = Max(parmax,parcur);
  
  gp_Pnt PointMin = ElCLib::Value(parmin,L3);
  gp_Pnt PointMax = ElCLib::Value(parmax,L3);

  Handle(Select3D_SensitiveSegment) seg;
  
  if (!PointMin.IsEqual(PointMax,Precision::Confusion()))
    {
      seg = new Select3D_SensitiveSegment(own,
					  PointMin,
					  PointMax);
      aSelection->Add(seg);
    }
  if (!myFAttach.IsEqual(Proj1,Precision::Confusion()))
    {
      seg = new Select3D_SensitiveSegment(own, myFAttach, Proj1);
      aSelection->Add(seg);
    }
  if (!mySAttach.IsEqual(Proj2,Precision::Confusion()))
    {
      seg = new Select3D_SensitiveSegment(own, mySAttach, Proj2);
      aSelection->Add(seg);
    }
}

//=======================================================================
//function : ComputeTwoFacesParallel
//purpose  : 
//=======================================================================
void AIS_ParallelRelation::ComputeTwoFacesParallel(const Handle(Prs3d_Presentation)&)
{
  throw Standard_NotImplemented("AIS_ParallelRelation::ComputeTwoFacesParallel not implemented");
}

//=======================================================================
//function : ComputeTwoEdgesParallel
//purpose  : 
//=======================================================================
void AIS_ParallelRelation::ComputeTwoEdgesParallel(const Handle(Prs3d_Presentation)& aPresentation)
{
  TopoDS_Edge E1 = TopoDS::Edge(myFShape);
  TopoDS_Edge E2 = TopoDS::Edge(mySShape);

  gp_Pnt ptat11,ptat12,ptat21,ptat22;//,pint3d;
  Handle(Geom_Curve) geom1,geom2;
  Standard_Boolean isInfinite1,isInfinite2;
  Handle(Geom_Curve) extCurv;
  if (!AIS::ComputeGeometry(E1,E2,myExtShape,
			    geom1,geom2,
			    ptat11,ptat12,ptat21,ptat22,
			    extCurv,
			    isInfinite1,isInfinite2,
			    myPlane))
    {
      return;
    }

  aPresentation->SetInfiniteState((isInfinite1 || isInfinite2) && (myExtShape != 0));

  gp_Lin l1;
  gp_Lin l2;
  Standard_Boolean isEl1 = Standard_False, isEl2 = Standard_False;

  if (geom1->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
    {
      Handle(Geom_Ellipse) geom_el1 (Handle(Geom_Ellipse)::DownCast (geom1));
      // construct lines through focuses
      gp_Ax1 elAx = geom_el1->XAxis();
      l1 = gp_Lin(elAx);
      Standard_Real focex = geom_el1->MajorRadius() - geom_el1->Focal()/2.0;
      gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
      ptat11 = geom_el1->Focus1().Translated(transvec);
      ptat12 = geom_el1->Focus2().Translated(-transvec);
      isEl1 = Standard_True;
    }
  else if (geom1->IsInstance(STANDARD_TYPE(Geom_Line)))
    {
      Handle(Geom_Line) geom_lin1 (Handle(Geom_Line)::DownCast (geom1));
      l1 = geom_lin1->Lin();
    }
  else return;

  if (geom2->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
    {
      Handle(Geom_Ellipse) geom_el2 (Handle(Geom_Ellipse)::DownCast (geom2));
      // construct lines through focuses
      gp_Ax1 elAx = geom_el2->XAxis();
      l2 = gp_Lin(elAx);
      Standard_Real focex = geom_el2->MajorRadius() - geom_el2->Focal()/2.0;
      gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
      ptat21 = geom_el2->Focus1().Translated(transvec);
      ptat22 = geom_el2->Focus2().Translated(-transvec);
      isEl2 = Standard_True;
    }
  else if (geom2->IsInstance(STANDARD_TYPE(Geom_Line)))
    {
      Handle(Geom_Line) geom_lin2 (Handle(Geom_Line)::DownCast (geom2));
      l2 = geom_lin2->Lin();
    }
  else return;

  const Handle(Geom_Line)& geom_lin1 = new Geom_Line(l1);
  const Handle(Geom_Line)& geom_lin2 = new Geom_Line(l2);

  myDirAttach = l1.Direction();
  // size
  if( !myArrowSizeIsDefined ) {
    Standard_Real arrSize1 (myArrowSize), arrSize2 (myArrowSize);
    if (!isInfinite1) arrSize1 = ptat11.Distance(ptat12)/50.;
    if (!isInfinite2) arrSize2 = ptat21.Distance(ptat22)/50.;
    myArrowSize = Max(myArrowSize,Max(arrSize1,arrSize2));
//  myArrowSize = Min(myArrowSize,Min(arrSize1,arrSize2));
  }

  if ( myAutomaticPosition )
    {    
      gp_Pnt curpos;
      if ( !isInfinite1 )
	{
	  gp_Pnt p2 = ElCLib::Value(ElCLib::Parameter(l2,ptat11),l2);
	  curpos.SetXYZ((ptat11.XYZ() + p2.XYZ())/2.);
	}
      else if ( !isInfinite2 )
	{
	  gp_Pnt p2 = ElCLib::Value(ElCLib::Parameter(l1,ptat21),l1);
	  curpos.SetXYZ((ptat21.XYZ()+p2.XYZ())/2.);
	}
      else
	{
	  curpos.SetXYZ((l1.Location().XYZ()+l2.Location().XYZ())/2.);
	}
      // offset pour eviter confusion Edge et Dimension
      gp_Vec offset (myDirAttach);
      offset = offset*myArrowSize*(-10.);
      curpos.Translate(offset);
      myPosition = curpos;
    }

  // recherche points attache
  if (!isInfinite1)
    {
      if ( isEl1 )
	{
	  if (myPosition.Distance(ptat11) < myPosition.Distance(ptat12)) myFAttach = ptat12;
	  else myFAttach = ptat11;
	}
      else
	{
	  if (myPosition.Distance(ptat11) > myPosition.Distance(ptat12)) myFAttach = ptat12;
	  else myFAttach = ptat11;
	}
    }
  else
    {
      myFAttach = ElCLib::Value(ElCLib::Parameter(l1,myPosition),l1);
    }
  
  if (!isInfinite2)
    {
      if ( isEl2 )
	{
	  if (myPosition.Distance(ptat21) < myPosition.Distance(ptat22)) mySAttach = ptat22;
	  else mySAttach = ptat21;
	}
      else
	{
	  if (myPosition.Distance(ptat21) > myPosition.Distance(ptat22)) mySAttach = ptat22;
	  else mySAttach = ptat21;
	}
    }
  else
    {
      mySAttach = ElCLib::Value(ElCLib::Parameter(l2,myPosition),l2);
    }
  TCollection_ExtendedString aText (" //");
  
  if (l1.Distance(l2) <= Precision::Confusion())
    {
      myArrowSize = 0.;
    }
  Handle(Prs3d_DimensionAspect) la = myDrawer->DimensionAspect();
  Handle(Prs3d_ArrowAspect) arr = la->ArrowAspect();
  arr->SetLength(myArrowSize);
  arr = la->ArrowAspect();
  arr->SetLength(myArrowSize);
  if ( myExtShape == 1)
    mySymbolPrs = DsgPrs_AS_FIRSTPT_LASTAR;
  else if ( myExtShape == 2)
    mySymbolPrs = DsgPrs_AS_FIRSTAR_LASTPT;

  DsgPrs_LengthPresentation::Add(aPresentation,
				 myDrawer,
				 aText,
				 myFAttach,
				 mySAttach,
				 myDirAttach,
				 myPosition,
				 mySymbolPrs);
  if ( (myExtShape != 0) &&  !extCurv.IsNull())
    {
      gp_Pnt pf, pl;
      if ( myExtShape == 1 )
	{
	  if (!isInfinite1)
	    {
	      pf = ptat11; 
	      pl = ptat12;
	    }
	  ComputeProjEdgePresentation(aPresentation,E1,geom_lin1,pf,pl);
	}
      else
	{
	  if (!isInfinite2)
	    {
	      pf = ptat21; 
	      pl = ptat22;
	    }
	  ComputeProjEdgePresentation(aPresentation,E2,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
7fd59977	17
7fd59977	18	#include <AIS.hxx>
42cf5bc1	19	#include <AIS_ParallelRelation.hxx>
7fd59977	20	#include <BRep_Tool.hxx>
7fd59977	21	#include <BRepAdaptor_Curve.hxx>
42cf5bc1	22	#include <BRepAdaptor_Surface.hxx>
42cf5bc1	23	#include <DsgPrs_LengthPresentation.hxx>
7fd59977	24	#include <ElCLib.hxx>
7fd59977	25	#include <gce_MakeLin.hxx>
7fd59977	26	#include <Geom_Ellipse.hxx>
42cf5bc1	27	#include <Geom_Line.hxx>
	28	#include <Geom_Plane.hxx>
	29	#include <Geom_Transformation.hxx>
	30	#include <gp_Ax1.hxx>
	31	#include <gp_Ax2.hxx>
	32	#include <gp_Dir.hxx>
	33	#include <gp_Lin.hxx>
	34	#include <gp_Pln.hxx>
	35	#include <gp_Pnt.hxx>
	36	#include <Precision.hxx>
	37	#include <Prs3d_ArrowAspect.hxx>
	38	#include <Prs3d_DimensionAspect.hxx>
	39	#include <Prs3d_Drawer.hxx>
	40	#include <Prs3d_Presentation.hxx>
42cf5bc1	41	#include <Select3D_SensitiveBox.hxx>
	42	#include <Select3D_SensitiveSegment.hxx>
	43	#include <SelectMgr_EntityOwner.hxx>
	44	#include <SelectMgr_Selection.hxx>
	45	#include <Standard_DomainError.hxx>
	46	#include <Standard_NotImplemented.hxx>
	47	#include <Standard_Type.hxx>
	48	#include <TCollection_AsciiString.hxx>
	49	#include <TCollection_ExtendedString.hxx>
42cf5bc1	50	#include <TopoDS.hxx>
42cf5bc1	51	#include <TopoDS_Shape.hxx>
7fd59977	52
92efcf78	53	IMPLEMENT_STANDARD_RTTIEXT(AIS_ParallelRelation,AIS_Relation)
92efcf78	54
7fd59977	55	//=======================================================================
	56	//function : Constructor
	57	//purpose :
	58	//=======================================================================
	59	AIS_ParallelRelation::AIS_ParallelRelation(const TopoDS_Shape& aFShape,
	60	const TopoDS_Shape& aSShape,
	61	const Handle(Geom_Plane)& aPlane)
	62	{
	63	myFShape = aFShape;
	64	mySShape = aSShape;
	65	myPlane = aPlane;
	66	myAutomaticPosition = Standard_True;
	67	myArrowSize = 0.01;
	68	mySymbolPrs = DsgPrs_AS_BOTHAR;
	69	}
	70
	71	//=======================================================================
	72	//function : Constructor
	73	//purpose :
	74	//=======================================================================
	75	AIS_ParallelRelation::AIS_ParallelRelation(const TopoDS_Shape& aFShape,
	76	const TopoDS_Shape& aSShape,
	77	const Handle(Geom_Plane)& aPlane,
	78	const gp_Pnt& aPosition,
	79	const DsgPrs_ArrowSide aSymbolPrs,
	80	const Standard_Real anArrowSize)
	81	{
	82	myFShape = aFShape;
	83	mySShape = aSShape;
	84	myPlane = aPlane;
	85	myAutomaticPosition = Standard_False;
7fd59977	86	SetArrowSize( anArrowSize );
7fd59977	87	myPosition = aPosition;
	88	mySymbolPrs = aSymbolPrs;
	89	}
	90
	91	//=======================================================================
	92	//function : Compute
	93	//purpose :
	94	//=======================================================================
	95	void AIS_ParallelRelation::Compute(const Handle(PrsMgr_PresentationManager3d)&,
	96	const Handle(Prs3d_Presentation)& aPresentation,
	97	const Standard_Integer)
	98	{
7fd59977	99	switch (myFShape.ShapeType())
	100	{
	101	case TopAbs_FACE :
	102	{
	103	// cas longueur entre deux faces
	104	ComputeTwoFacesParallel(aPresentation);
	105	}
	106	break;
	107	case TopAbs_EDGE :
	108	{
	109	// cas longueur entre deux edges
	110	ComputeTwoEdgesParallel(aPresentation);
	111	}
	112	break;
	113	default:
	114	break;
	115	}
	116	}
	117
7fd59977	118	//=======================================================================
	119	//function : ComputeSelection
	120	//purpose :
	121	//=======================================================================
	122	void AIS_ParallelRelation::ComputeSelection(const Handle(SelectMgr_Selection)& aSelection,
	123	const Standard_Integer)
	124	{
	125	gp_Lin L1 (myFAttach,myDirAttach);
	126	gp_Lin L2 (mySAttach,myDirAttach);
	127	gp_Pnt Proj1 = ElCLib::Value(ElCLib::Parameter(L1,myPosition),L1);
	128	gp_Pnt Proj2 = ElCLib::Value(ElCLib::Parameter(L2,myPosition),L2);
	129
	130	gp_Lin L3;
	131	Handle(SelectMgr_EntityOwner) own = new SelectMgr_EntityOwner(this,7);
	132
	133	if (!Proj1.IsEqual(Proj2,Precision::Confusion()))
	134	{
	135	L3 = gce_MakeLin(Proj1,Proj2);
	136	}
	137	else
	138	{
	139	L3 = gce_MakeLin(Proj1,myDirAttach);
	140	Standard_Real size(Min(myVal/100.+1.e-6,myArrowSize+1.e-6));
	141	Handle(Select3D_SensitiveBox) box =
	142	new Select3D_SensitiveBox(own,
	143	myPosition.X(),
	144	myPosition.Y(),
	145	myPosition.Z(),
	146	myPosition.X()+size,
	147	myPosition.Y()+size,
	148	myPosition.Z()+size);
	149	aSelection->Add(box);
	150	}
	151	Standard_Real parmin,parmax,parcur;
	152	parmin = ElCLib::Parameter(L3,Proj1);
	153	parmax = parmin;
	154
	155	parcur = ElCLib::Parameter(L3,Proj2);
	156	parmin = Min(parmin,parcur);
	157	parmax = Max(parmax,parcur);
	158
	159	parcur = ElCLib::Parameter(L3,myPosition);
	160	parmin = Min(parmin,parcur);
	161	parmax = Max(parmax,parcur);
	162
	163	gp_Pnt PointMin = ElCLib::Value(parmin,L3);
	164	gp_Pnt PointMax = ElCLib::Value(parmax,L3);
	165
	166	Handle(Select3D_SensitiveSegment) seg;
	167
	168	if (!PointMin.IsEqual(PointMax,Precision::Confusion()))
	169	{
	170	seg = new Select3D_SensitiveSegment(own,
	171	PointMin,
	172	PointMax);
	173	aSelection->Add(seg);
	174	}
	175	if (!myFAttach.IsEqual(Proj1,Precision::Confusion()))
	176	{
	177	seg = new Select3D_SensitiveSegment(own, myFAttach, Proj1);
	178	aSelection->Add(seg);
	179	}
	180	if (!mySAttach.IsEqual(Proj2,Precision::Confusion()))
	181	{
182	seg = new Select3D_SensitiveSegment(own, mySAttach, Proj2);
183	aSelection->Add(seg);
184	}
185	}
186
187	//=======================================================================
188	//function : ComputeTwoFacesParallel
189	//purpose :
190	//=======================================================================
191	void AIS_ParallelRelation::ComputeTwoFacesParallel(const Handle(Prs3d_Presentation)&)
192	{
9775fa61	193	throw Standard_NotImplemented("AIS_ParallelRelation::ComputeTwoFacesParallel not implemented");
7fd59977	194	}
	195
	196	//=======================================================================
	197	//function : ComputeTwoEdgesParallel
	198	//purpose :
	199	//=======================================================================
	200	void AIS_ParallelRelation::ComputeTwoEdgesParallel(const Handle(Prs3d_Presentation)& aPresentation)
	201	{
	202	TopoDS_Edge E1 = TopoDS::Edge(myFShape);
	203	TopoDS_Edge E2 = TopoDS::Edge(mySShape);
	204
	205	gp_Pnt ptat11,ptat12,ptat21,ptat22;//,pint3d;
	206	Handle(Geom_Curve) geom1,geom2;
	207	Standard_Boolean isInfinite1,isInfinite2;
	208	Handle(Geom_Curve) extCurv;
	209	if (!AIS::ComputeGeometry(E1,E2,myExtShape,
	210	geom1,geom2,
	211	ptat11,ptat12,ptat21,ptat22,
	212	extCurv,
	213	isInfinite1,isInfinite2,
	214	myPlane))
	215	{
	216	return;
	217	}
	218
	219	aPresentation->SetInfiniteState((isInfinite1 \|\| isInfinite2) && (myExtShape != 0));
	220
	221	gp_Lin l1;
	222	gp_Lin l2;
	223	Standard_Boolean isEl1 = Standard_False, isEl2 = Standard_False;
	224
	225	if (geom1->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
	226	{
c5f3a425	227	Handle(Geom_Ellipse) geom_el1 (Handle(Geom_Ellipse)::DownCast (geom1));
7fd59977	228	// construct lines through focuses
	229	gp_Ax1 elAx = geom_el1->XAxis();
	230	l1 = gp_Lin(elAx);
	231	Standard_Real focex = geom_el1->MajorRadius() - geom_el1->Focal()/2.0;
	232	gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
	233	ptat11 = geom_el1->Focus1().Translated(transvec);
	234	ptat12 = geom_el1->Focus2().Translated(-transvec);
	235	isEl1 = Standard_True;
	236	}
	237	else if (geom1->IsInstance(STANDARD_TYPE(Geom_Line)))
	238	{
c5f3a425	239	Handle(Geom_Line) geom_lin1 (Handle(Geom_Line)::DownCast (geom1));
7fd59977	240	l1 = geom_lin1->Lin();
	241	}
	242	else return;
	243
	244	if (geom2->IsInstance(STANDARD_TYPE(Geom_Ellipse)))
	245	{
c5f3a425	246	Handle(Geom_Ellipse) geom_el2 (Handle(Geom_Ellipse)::DownCast (geom2));
7fd59977	247	// construct lines through focuses
	248	gp_Ax1 elAx = geom_el2->XAxis();
	249	l2 = gp_Lin(elAx);
	250	Standard_Real focex = geom_el2->MajorRadius() - geom_el2->Focal()/2.0;
	251	gp_Vec transvec = gp_Vec(elAx.Direction())*focex;
	252	ptat21 = geom_el2->Focus1().Translated(transvec);
	253	ptat22 = geom_el2->Focus2().Translated(-transvec);
	254	isEl2 = Standard_True;
	255	}
	256	else if (geom2->IsInstance(STANDARD_TYPE(Geom_Line)))
	257	{
c5f3a425	258	Handle(Geom_Line) geom_lin2 (Handle(Geom_Line)::DownCast (geom2));
7fd59977	259	l2 = geom_lin2->Lin();
	260	}
	261	else return;
	262
	263	const Handle(Geom_Line)& geom_lin1 = new Geom_Line(l1);
	264	const Handle(Geom_Line)& geom_lin2 = new Geom_Line(l2);
	265
	266	myDirAttach = l1.Direction();
	267	// size
7fd59977	268	if( !myArrowSizeIsDefined ) {
7fd59977	269	Standard_Real arrSize1 (myArrowSize), arrSize2 (myArrowSize);
	270	if (!isInfinite1) arrSize1 = ptat11.Distance(ptat12)/50.;
	271	if (!isInfinite2) arrSize2 = ptat21.Distance(ptat22)/50.;
	272	myArrowSize = Max(myArrowSize,Max(arrSize1,arrSize2));
	273	// myArrowSize = Min(myArrowSize,Min(arrSize1,arrSize2));
7fd59977	274	}
7fd59977	275
	276	if ( myAutomaticPosition )
	277	{
	278	gp_Pnt curpos;
	279	if ( !isInfinite1 )
	280	{
	281	gp_Pnt p2 = ElCLib::Value(ElCLib::Parameter(l2,ptat11),l2);
	282	curpos.SetXYZ((ptat11.XYZ() + p2.XYZ())/2.);
	283	}
	284	else if ( !isInfinite2 )
	285	{
	286	gp_Pnt p2 = ElCLib::Value(ElCLib::Parameter(l1,ptat21),l1);
	287	curpos.SetXYZ((ptat21.XYZ()+p2.XYZ())/2.);
	288	}
	289	else
	290	{
	291	curpos.SetXYZ((l1.Location().XYZ()+l2.Location().XYZ())/2.);
	292	}
	293	// offset pour eviter confusion Edge et Dimension
	294	gp_Vec offset (myDirAttach);
	295	offset = offsetmyArrowSize(-10.);
	296	curpos.Translate(offset);
	297	myPosition = curpos;
	298	}
	299
	300	// recherche points attache
	301	if (!isInfinite1)
	302	{
	303	if ( isEl1 )
	304	{
	305	if (myPosition.Distance(ptat11) < myPosition.Distance(ptat12)) myFAttach = ptat12;
	306	else myFAttach = ptat11;
	307	}
	308	else
	309	{
	310	if (myPosition.Distance(ptat11) > myPosition.Distance(ptat12)) myFAttach = ptat12;
	311	else myFAttach = ptat11;
	312	}
	313	}
	314	else
	315	{
	316	myFAttach = ElCLib::Value(ElCLib::Parameter(l1,myPosition),l1);
	317	}
	318
	319	if (!isInfinite2)
	320	{
	321	if ( isEl2 )
	322	{
	323	if (myPosition.Distance(ptat21) < myPosition.Distance(ptat22)) mySAttach = ptat22;
	324	else mySAttach = ptat21;
	325	}
	326	else
	327	{
	328	if (myPosition.Distance(ptat21) > myPosition.Distance(ptat22)) mySAttach = ptat22;
	329	else mySAttach = ptat21;
	330	}
	331	}
	332	else
	333	{
	334	mySAttach = ElCLib::Value(ElCLib::Parameter(l2,myPosition),l2);
	335	}
	336	TCollection_ExtendedString aText (" //");
	337
	338	if (l1.Distance(l2) <= Precision::Confusion())
339	{
340	myArrowSize = 0.;
341	}
a6eb515f	342	Handle(Prs3d_DimensionAspect) la = myDrawer->DimensionAspect();
a6eb515f	343	Handle(Prs3d_ArrowAspect) arr = la->ArrowAspect();
7fd59977	344	arr->SetLength(myArrowSize);
a6eb515f	345	arr = la->ArrowAspect();
7fd59977	346	arr->SetLength(myArrowSize);
	347	if ( myExtShape == 1)
	348	mySymbolPrs = DsgPrs_AS_FIRSTPT_LASTAR;
	349	else if ( myExtShape == 2)
	350	mySymbolPrs = DsgPrs_AS_FIRSTAR_LASTPT;
	351
	352	DsgPrs_LengthPresentation::Add(aPresentation,
	353	myDrawer,
	354	aText,
	355	myFAttach,
	356	mySAttach,
	357	myDirAttach,
	358	myPosition,
	359	mySymbolPrs);
	360	if ( (myExtShape != 0) && !extCurv.IsNull())
	361	{
	362	gp_Pnt pf, pl;
	363	if ( myExtShape == 1 )
	364	{
	365	if (!isInfinite1)
	366	{
	367	pf = ptat11;
	368	pl = ptat12;
	369	}
	370	ComputeProjEdgePresentation(aPresentation,E1,geom_lin1,pf,pl);
	371	}
	372	else
	373	{
	374	if (!isInfinite2)
	375	{
	376	pf = ptat21;
	377	pl = ptat22;
	378	}
	379	ComputeProjEdgePresentation(aPresentation,E2,geom_lin2,pf,pl);
	380	}
	381	}
	382	}