[occt.git] / src / DsgPrs / DsgPrs_EqualDistancePresentation.cxx

// Created on: 1998-01-27
// Created by: Julia GERASIMOVA
// Copyright (c) 1998-1999 Matra Datavision
// Copyright (c) 1999-2012 OPEN CASCADE SAS
//
// The content of this file is subject to the Open CASCADE Technology Public
// License Version 6.5 (the "License"). You may not use the content of this file
// except in compliance with the License. Please obtain a copy of the License
// at http://www.opencascade.org and read it completely before using this file.
//
// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
//
// The Original Code and all software distributed under the License is
// distributed on an "AS IS" basis, without warranty of any kind, and the
// Initial Developer hereby disclaims all such warranties, including without
// limitation, any warranties of merchantability, fitness for a particular
// purpose or non-infringement. Please see the License for the specific terms
// and conditions governing the rights and limitations under the License.

#include <DsgPrs_EqualDistancePresentation.ixx>

#include <DsgPrs.hxx>
#include <Graphic3d_Group.hxx>
#include <Prs3d_LengthAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Graphic3d_ArrayOfSegments.hxx>
#include <Graphic3d_ArrayOfPolylines.hxx>
#include <Prs3d_Root.hxx>
#include <gp_Dir.hxx>
#include <gce_MakeDir.hxx>
#include <gp_Vec.hxx>
#include <gp_Pln.hxx>
#include <Precision.hxx>
#include <ElCLib.hxx>
#include <gp_Circ.hxx>
#include <TCollection_ExtendedString.hxx>
#include <Prs3d_Text.hxx>

//=================================================================================
//function  : Add
//=================================================================================
void DsgPrs_EqualDistancePresentation::Add( const Handle( Prs3d_Presentation )& aPresentation,
					    const Handle( Prs3d_Drawer )& aDrawer,
					    const gp_Pnt& Point1,
					    const gp_Pnt& Point2,
					    const gp_Pnt& Point3,
					    const gp_Pnt& Point4,
					    const Handle( Geom_Plane )& Plane )
{
  Handle( Prs3d_LengthAspect ) LA = aDrawer->LengthAspect();
  Prs3d_Root::CurrentGroup( aPresentation )->SetPrimitivesAspect( LA->LineAspect()->Aspect() );

  // Line between two middles
  gp_Pnt Middle12( (Point1.XYZ() + Point2.XYZ()) * 0.5 ), Middle34( (Point3.XYZ() + Point4.XYZ()) * 0.5 );

  Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
  aPrims->AddVertex(Middle12);
  aPrims->AddVertex(Middle34);
  Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);

  // Add presentation of arrows (points)
  gp_Dir aDir( 0, 0, 1 );
  DsgPrs::ComputeSymbol(aPresentation, LA, Middle12, Middle34, aDir, aDir, DsgPrs_AS_BOTHPT );
// ota -- begin --  
  // Two small lines in the middle of this line
  gp_Pnt Middle( (Middle12.XYZ() + Middle34.XYZ()) * 0.5 ), aTextPos;
  Standard_Real Dist = Middle12.Distance( Middle34 );
  Standard_Real SmallDist;
  gp_Dir LineDir, OrtDir;
  gp_Vec LineVec, OrtVec;

  if (Dist > Precision::Confusion())
  {
    SmallDist = Dist * 0.05; // 1/20.0 part
    if (SmallDist <= Precision::Confusion())
      SmallDist = Dist;
    LineDir = gce_MakeDir( Middle12, Middle34 );
    OrtDir  = Plane->Pln().Axis().Direction() ^ LineDir;
    LineVec = gp_Vec( LineDir ) * SmallDist;
    OrtVec  = gp_Vec( OrtDir ) * SmallDist;

    aTextPos = Middle.Translated( OrtVec );
  }
  else
  {
    gp_Vec Vec1( Middle, Point1 );

    if (Vec1.SquareMagnitude() > Precision::Confusion()*Precision::Confusion())
	{
	  Standard_Real Angle = gp_Vec( Middle, Point1 ).Angle( gp_Vec( Middle, Point3 ) );
	  gp_Pnt MidPnt = Point1.Rotated( Plane->Pln().Axis(), Angle*0.5 );
	  OrtDir  = gce_MakeDir( Middle, MidPnt );
	  LineDir = OrtDir ^ Plane->Pln().Axis().Direction();
	  
	  Standard_Real Distance = Point1.Distance( Point2 );
	  SmallDist = Distance * 0.05; // 1/20.0
	  if (SmallDist <= Precision::Confusion())
	    SmallDist = Distance;
	  
	  OrtVec = gp_Vec( OrtDir ) * SmallDist;
	  LineVec = gp_Vec( LineDir ) * SmallDist;
	}
    else
	{
	  SmallDist = 5.0;
	  OrtVec = gp_Vec( Plane->Pln().XAxis().Direction() ) * SmallDist;
	  LineVec = gp_Vec( Plane->Pln().YAxis().Direction() ) * SmallDist;
	}
    aTextPos =  Middle.Translated (OrtVec);
  }

  TCollection_ExtendedString aText("==");

  //Draw the text
  Prs3d_Text::Draw(aPresentation,LA->TextAspect(), aText, aTextPos);
}


//==================================================================================
//function  : AddInterval
//purpose   : is used for presentation of interval between two lines or two points, 
//            or between one line and one point.
//==================================================================================
 void DsgPrs_EqualDistancePresentation::AddInterval(const Handle(Prs3d_Presentation)& aPresentation,
						    const Handle(Prs3d_Drawer)& aDrawer,
						    const gp_Pnt& aPoint1,
						    const gp_Pnt& aPoint2,
						    const gp_Dir& aDirection,
						    const gp_Pnt& aPosition,
						    const DsgPrs_ArrowSide anArrowSide,
						    gp_Pnt& aProj1,
						    gp_Pnt& aProj2) 
{
  const Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
  Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  
  gp_Lin L1 (aPoint1,aDirection);
  gp_Lin L2 (aPoint2,aDirection);
  aProj1 = ElCLib::Value(ElCLib::Parameter(L1, aPosition),L1);
  aProj2 = ElCLib::Value(ElCLib::Parameter(L2, aPosition),L2);

  Handle(Graphic3d_ArrayOfPolylines) aPrims = new Graphic3d_ArrayOfPolylines(4);
  aPrims->AddVertex(aPoint1);
  aPrims->AddVertex(aProj1);
  aPrims->AddVertex(aProj2);
  aPrims->AddVertex(aPoint2);
  Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);

  //add arrows presentation
  gp_Dir aDir(aProj2.XYZ() - aProj1.XYZ());
  
  DsgPrs::ComputeSymbol(aPresentation, LA, aProj1, aProj2, aDir.Reversed(), aDir, anArrowSide);
}


//========================================================================
// function : AddIntervalBetweenTwoArcs 
// purpose  : is used for presentation of interval between two arcs. One
//            of the arcs can have a zero radius (being a point really) 
//========================================================================
 void 
  DsgPrs_EqualDistancePresentation::AddIntervalBetweenTwoArcs(const Handle(Prs3d_Presentation)& aPresentation,
							      const Handle(Prs3d_Drawer)& aDrawer,
							      const gp_Circ& aCirc1,
							      const gp_Circ& aCirc2,
							      const gp_Pnt& aPoint1,
							      const gp_Pnt& aPoint2,
							      const gp_Pnt& aPoint3,
							      const gp_Pnt& aPoint4,
							      const DsgPrs_ArrowSide anArrowSide) 
{
  const Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
  Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());

  Standard_Real aPar11, aPar12, aPar21, aPar22;
  if(aCirc1.Radius() > Precision::Confusion()){
    aPar11 = ElCLib::Parameter (aCirc1, aPoint1);
    aPar12 = ElCLib::Parameter(aCirc1, aPoint2);
  }
  else {
    aPar11 = M_PI;
    aPar12 = M_PI;
  }
  if (aCirc2.Radius() > Precision::Confusion()){
    aPar21 = ElCLib::Parameter(aCirc2, aPoint3 );
    aPar22 = ElCLib::Parameter(aCirc2, aPoint4);
  }
  else {
    aPar21 = M_PI;
    aPar22 = M_PI;
  }

  Handle(Graphic3d_ArrayOfPrimitives) aPrims = new Graphic3d_ArrayOfSegments(2);
  aPrims->AddVertex(aPoint2);
  aPrims->AddVertex(aPoint4);
  Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);

  Standard_Integer i, aNodeNb;
  Standard_Real aDelta, aCurPar;
  if(aPar12 < aPar11 ) aPar12 += 2.*M_PI;
  if (Abs(aPar12 - aPar11) > Precision::Confusion())
  {
    aNodeNb = Standard_Integer(Max(Abs(aPar12 - aPar11)*50./M_PI + 0.5, 4.));
    aDelta = (aPar12 - aPar11)/aNodeNb;
    aCurPar= aPar11;

    aPrims = new Graphic3d_ArrayOfPolylines(aNodeNb+1);
    for (i = 1; i<= aNodeNb; aCurPar += aDelta, i++)
      aPrims->AddVertex(ElCLib::Value( aCurPar, aCirc1));
    aPrims->AddVertex(aPoint2);
    Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
  }
  if (aPar22 < aPar21) aPar22 += 2.*M_PI;
  if ( Abs(aPar22 - aPar21) > Precision::Confusion())
  {
    aNodeNb = Standard_Integer(Max(Abs(aPar22 - aPar21)*50./M_PI + 0.5, 4.));
    aDelta = (aPar22 - aPar21)/aNodeNb;
    aCurPar= aPar21;

    aPrims = new Graphic3d_ArrayOfPolylines(aNodeNb+1);
    for (i = 1; i<= aNodeNb; aCurPar += aDelta, i++)
      aPrims->AddVertex(ElCLib::Value( aCurPar, aCirc2));
    aPrims->AddVertex(aPoint4);
    Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
  }

  //get the direction of interval
  gp_Dir DirOfArrow;
  if(aPoint4.Distance(aPoint2) > Precision::Confusion())
  {
    DirOfArrow.SetXYZ(aPoint4.XYZ() - aPoint2.XYZ());
  }
  else
  {
    //Let's take the radius direction
    gp_Pnt aCenter = aCirc1.Location();
    if(aPoint4.Distance(aCenter) < Precision::Confusion())
      return;
    DirOfArrow.SetXYZ(aPoint4.XYZ() - aCenter.XYZ());
  }

  // Add presentation of arrows
  DsgPrs::ComputeSymbol( aPresentation, LA, aPoint2, aPoint4, DirOfArrow.Reversed(), DirOfArrow, anArrowSide );
}
//-- ota -- end
Commit	Line	Data
b311480e	1	// Created on: 1998-01-27
	2	// Created by: Julia GERASIMOVA
	3	// Copyright (c) 1998-1999 Matra Datavision
	4	// Copyright (c) 1999-2012 OPEN CASCADE SAS
	5	//
	6	// The content of this file is subject to the Open CASCADE Technology Public
	7	// License Version 6.5 (the "License"). You may not use the content of this file
	8	// except in compliance with the License. Please obtain a copy of the License
	9	// at http://www.opencascade.org and read it completely before using this file.
	10	//
	11	// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
	12	// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
	13	//
	14	// The Original Code and all software distributed under the License is
	15	// distributed on an "AS IS" basis, without warranty of any kind, and the
	16	// Initial Developer hereby disclaims all such warranties, including without
	17	// limitation, any warranties of merchantability, fitness for a particular
	18	// purpose or non-infringement. Please see the License for the specific terms
	19	// and conditions governing the rights and limitations under the License.
	20
7fd59977	21	#include <DsgPrs_EqualDistancePresentation.ixx>
	22
	23	#include <DsgPrs.hxx>
	24	#include <Graphic3d_Group.hxx>
	25	#include <Prs3d_LengthAspect.hxx>
	26	#include <Prs3d_LineAspect.hxx>
b8ddfc2f	27	#include <Graphic3d_ArrayOfSegments.hxx>
b8ddfc2f	28	#include <Graphic3d_ArrayOfPolylines.hxx>
7fd59977	29	#include <Prs3d_Root.hxx>
	30	#include <gp_Dir.hxx>
	31	#include <gce_MakeDir.hxx>
	32	#include <gp_Vec.hxx>
	33	#include <gp_Pln.hxx>
	34	#include <Precision.hxx>
	35	#include <ElCLib.hxx>
	36	#include <gp_Circ.hxx>
	37	#include <TCollection_ExtendedString.hxx>
	38	#include <Prs3d_Text.hxx>
	39
	40	//=================================================================================
	41	//function : Add
	42	//=================================================================================
	43	void DsgPrs_EqualDistancePresentation::Add( const Handle( Prs3d_Presentation )& aPresentation,
	44	const Handle( Prs3d_Drawer )& aDrawer,
	45	const gp_Pnt& Point1,
	46	const gp_Pnt& Point2,
	47	const gp_Pnt& Point3,
	48	const gp_Pnt& Point4,
	49	const Handle( Geom_Plane )& Plane )
	50	{
	51	Handle( Prs3d_LengthAspect ) LA = aDrawer->LengthAspect();
	52	Prs3d_Root::CurrentGroup( aPresentation )->SetPrimitivesAspect( LA->LineAspect()->Aspect() );
	53
7fd59977	54	// Line between two middles
	55	gp_Pnt Middle12( (Point1.XYZ() + Point2.XYZ()) * 0.5 ), Middle34( (Point3.XYZ() + Point4.XYZ()) * 0.5 );
	56
b8ddfc2f	57	Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
	58	aPrims->AddVertex(Middle12);
	59	aPrims->AddVertex(Middle34);
	60	Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977	61
	62	// Add presentation of arrows (points)
	63	gp_Dir aDir( 0, 0, 1 );
b8ddfc2f	64	DsgPrs::ComputeSymbol(aPresentation, LA, Middle12, Middle34, aDir, aDir, DsgPrs_AS_BOTHPT );
7fd59977	65	// ota -- begin --
	66	// Two small lines in the middle of this line
	67	gp_Pnt Middle( (Middle12.XYZ() + Middle34.XYZ()) * 0.5 ), aTextPos;
	68	Standard_Real Dist = Middle12.Distance( Middle34 );
	69	Standard_Real SmallDist;
	70	gp_Dir LineDir, OrtDir;
	71	gp_Vec LineVec, OrtVec;
	72
	73	if (Dist > Precision::Confusion())
b8ddfc2f	74	{
	75	SmallDist = Dist * 0.05; // 1/20.0 part
	76	if (SmallDist <= Precision::Confusion())
	77	SmallDist = Dist;
	78	LineDir = gce_MakeDir( Middle12, Middle34 );
	79	OrtDir = Plane->Pln().Axis().Direction() ^ LineDir;
	80	LineVec = gp_Vec( LineDir ) * SmallDist;
	81	OrtVec = gp_Vec( OrtDir ) * SmallDist;
	82
	83	aTextPos = Middle.Translated( OrtVec );
	84	}
7fd59977	85	else
b8ddfc2f	86	{
b8ddfc2f	87	gp_Vec Vec1( Middle, Point1 );
7fd59977	88
b8ddfc2f	89	if (Vec1.SquareMagnitude() > Precision::Confusion()*Precision::Confusion())
7fd59977	90	{
	91	Standard_Real Angle = gp_Vec( Middle, Point1 ).Angle( gp_Vec( Middle, Point3 ) );
	92	gp_Pnt MidPnt = Point1.Rotated( Plane->Pln().Axis(), Angle*0.5 );
	93	OrtDir = gce_MakeDir( Middle, MidPnt );
	94	LineDir = OrtDir ^ Plane->Pln().Axis().Direction();
	95
	96	Standard_Real Distance = Point1.Distance( Point2 );
	97	SmallDist = Distance * 0.05; // 1/20.0
	98	if (SmallDist <= Precision::Confusion())
	99	SmallDist = Distance;
	100
	101	OrtVec = gp_Vec( OrtDir ) * SmallDist;
	102	LineVec = gp_Vec( LineDir ) * SmallDist;
	103	}
b8ddfc2f	104	else
7fd59977	105	{
	106	SmallDist = 5.0;
	107	OrtVec = gp_Vec( Plane->Pln().XAxis().Direction() ) * SmallDist;
	108	LineVec = gp_Vec( Plane->Pln().YAxis().Direction() ) * SmallDist;
	109	}
b8ddfc2f	110	aTextPos = Middle.Translated (OrtVec);
b8ddfc2f	111	}
7fd59977	112
	113	TCollection_ExtendedString aText("==");
	114
	115	//Draw the text
	116	Prs3d_Text::Draw(aPresentation,LA->TextAspect(), aText, aTextPos);
	117	}
	118
b8ddfc2f	119
7fd59977	120	//==================================================================================
	121	//function : AddInterval
	122	//purpose : is used for presentation of interval between two lines or two points,
	123	// or between one line and one point.
	124	//==================================================================================
	125	void DsgPrs_EqualDistancePresentation::AddInterval(const Handle(Prs3d_Presentation)& aPresentation,
	126	const Handle(Prs3d_Drawer)& aDrawer,
	127	const gp_Pnt& aPoint1,
	128	const gp_Pnt& aPoint2,
	129	const gp_Dir& aDirection,
	130	const gp_Pnt& aPosition,
	131	const DsgPrs_ArrowSide anArrowSide,
	132	gp_Pnt& aProj1,
	133	gp_Pnt& aProj2)
	134	{
	135	const Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
7fd59977	136	Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
	137
	138	gp_Lin L1 (aPoint1,aDirection);
	139	gp_Lin L2 (aPoint2,aDirection);
	140	aProj1 = ElCLib::Value(ElCLib::Parameter(L1, aPosition),L1);
	141	aProj2 = ElCLib::Value(ElCLib::Parameter(L2, aPosition),L2);
	142
b8ddfc2f	143	Handle(Graphic3d_ArrayOfPolylines) aPrims = new Graphic3d_ArrayOfPolylines(4);
	144	aPrims->AddVertex(aPoint1);
	145	aPrims->AddVertex(aProj1);
	146	aPrims->AddVertex(aProj2);
	147	aPrims->AddVertex(aPoint2);
	148	Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977	149
	150	//add arrows presentation
	151	gp_Dir aDir(aProj2.XYZ() - aProj1.XYZ());
	152
b8ddfc2f	153	DsgPrs::ComputeSymbol(aPresentation, LA, aProj1, aProj2, aDir.Reversed(), aDir, anArrowSide);
7fd59977	154	}
7fd59977	155
b8ddfc2f	156
7fd59977	157	//========================================================================
	158	// function : AddIntervalBetweenTwoArcs
	159	// purpose : is used for presentation of interval between two arcs. One
	160	// of the arcs can have a zero radius (being a point really)
	161	//========================================================================
	162	void
	163	DsgPrs_EqualDistancePresentation::AddIntervalBetweenTwoArcs(const Handle(Prs3d_Presentation)& aPresentation,
	164	const Handle(Prs3d_Drawer)& aDrawer,
	165	const gp_Circ& aCirc1,
	166	const gp_Circ& aCirc2,
	167	const gp_Pnt& aPoint1,
	168	const gp_Pnt& aPoint2,
	169	const gp_Pnt& aPoint3,
	170	const gp_Pnt& aPoint4,
	171	const DsgPrs_ArrowSide anArrowSide)
	172	{
7fd59977	173	const Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
7fd59977	174	Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
b8ddfc2f	175
7fd59977	176	Standard_Real aPar11, aPar12, aPar21, aPar22;
	177	if(aCirc1.Radius() > Precision::Confusion()){
	178	aPar11 = ElCLib::Parameter (aCirc1, aPoint1);
	179	aPar12 = ElCLib::Parameter(aCirc1, aPoint2);
	180	}
	181	else {
c6541a0c D	182	aPar11 = M_PI;
c6541a0c D	183	aPar12 = M_PI;
7fd59977	184	}
	185	if (aCirc2.Radius() > Precision::Confusion()){
	186	aPar21 = ElCLib::Parameter(aCirc2, aPoint3 );
	187	aPar22 = ElCLib::Parameter(aCirc2, aPoint4);
	188	}
	189	else {
c6541a0c D	190	aPar21 = M_PI;
c6541a0c D	191	aPar22 = M_PI;
7fd59977	192	}
7fd59977	193
b8ddfc2f	194	Handle(Graphic3d_ArrayOfPrimitives) aPrims = new Graphic3d_ArrayOfSegments(2);
	195	aPrims->AddVertex(aPoint2);
	196	aPrims->AddVertex(aPoint4);
	197	Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977	198
b8ddfc2f	199	Standard_Integer i, aNodeNb;
7fd59977	200	Standard_Real aDelta, aCurPar;
b8ddfc2f	201	if(aPar12 < aPar11 ) aPar12 += 2.*M_PI;
	202	if (Abs(aPar12 - aPar11) > Precision::Confusion())
	203	{
c6541a0c	204	aNodeNb = Standard_Integer(Max(Abs(aPar12 - aPar11)*50./M_PI + 0.5, 4.));
7fd59977	205	aDelta = (aPar12 - aPar11)/aNodeNb;
7fd59977	206	aCurPar= aPar11;
7fd59977	207
b8ddfc2f	208	aPrims = new Graphic3d_ArrayOfPolylines(aNodeNb+1);
	209	for (i = 1; i<= aNodeNb; aCurPar += aDelta, i++)
	210	aPrims->AddVertex(ElCLib::Value( aCurPar, aCirc1));
	211	aPrims->AddVertex(aPoint2);
	212	Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977	213	}
b8ddfc2f	214	if (aPar22 < aPar21) aPar22 += 2.*M_PI;
	215	if ( Abs(aPar22 - aPar21) > Precision::Confusion())
	216	{
c6541a0c	217	aNodeNb = Standard_Integer(Max(Abs(aPar22 - aPar21)*50./M_PI + 0.5, 4.));
7fd59977	218	aDelta = (aPar22 - aPar21)/aNodeNb;
7fd59977	219	aCurPar= aPar21;
b8ddfc2f	220
	221	aPrims = new Graphic3d_ArrayOfPolylines(aNodeNb+1);
	222	for (i = 1; i<= aNodeNb; aCurPar += aDelta, i++)
	223	aPrims->AddVertex(ElCLib::Value( aCurPar, aCirc2));
	224	aPrims->AddVertex(aPoint4);
	225	Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
7fd59977	226	}
	227
	228	//get the direction of interval
b8ddfc2f	229	gp_Dir DirOfArrow;
	230	if(aPoint4.Distance(aPoint2) > Precision::Confusion())
	231	{
7fd59977	232	DirOfArrow.SetXYZ(aPoint4.XYZ() - aPoint2.XYZ());
7fd59977	233	}
b8ddfc2f	234	else
b8ddfc2f	235	{
7fd59977	236	//Let's take the radius direction
	237	gp_Pnt aCenter = aCirc1.Location();
	238	if(aPoint4.Distance(aCenter) < Precision::Confusion())
	239	return;
	240	DirOfArrow.SetXYZ(aPoint4.XYZ() - aCenter.XYZ());
	241	}
	242
	243	// Add presentation of arrows
	244	DsgPrs::ComputeSymbol( aPresentation, LA, aPoint2, aPoint4, DirOfArrow.Reversed(), DirOfArrow, anArrowSide );
7fd59977	245	}
7fd59977	246	//-- ota -- end