[occt.git] / src / ChFiKPart / ChFiKPart_ComputeData_ChAsymPlnCon.cxx

// Created on: 1998-06-18
// Created by: Philippe NOUAILLE
// Copyright (c) 1998-1999 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 <ChFiKPart_ComputeData.ixx>

#include <Precision.hxx>
#include <gp.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Lin2d.hxx>

#include <gp_Dir.hxx>
#include <gp_Pnt.hxx>
#include <gp_Ax2.hxx>
#include <gp_Ax3.hxx>
#include <gp_Vec.hxx>
#include <gp_Circ.hxx>

#include <ElCLib.hxx>
#include <ElSLib.hxx>

#include <Geom2d_Line.hxx>
#include <Geom2d_Circle.hxx>
#include <Geom_Circle.hxx>
#include <Geom_ConicalSurface.hxx>
#include <Geom_CylindricalSurface.hxx>

#include <ChFiKPart_ComputeData_Fcts.hxx>


//=======================================================================
//function : MakeChAsym
//purpose  : Compute the chamfer in the particular case Plane/Cone or 
//           Cylinder/Plane
//           Compute the SurfData <Data> of the chamfer build on the <Spine>
//           between the plane <Pln> and the cone <Con>, with the 
//           distances <Dis1> on <Pln> and <Dis2> on <Con>.
//           <Or1> and <Or2> are the orientations of <Pln> and <Con>
//           and <Ofpl> this of the face carried by <Pln>.
//           <First> is the start point on the <Spine>
//           <Plandab> is equal to True if the plane is the surface S1
//           <fu> and <lu> are the first and last u parameters of the
//           cone
//out      : True if the chanfer has been computed
//           False else
//=======================================================================

Standard_Boolean ChFiKPart_MakeChAsym(TopOpeBRepDS_DataStructure& DStr,
				      const Handle(ChFiDS_SurfData)& Data, 
				      const gp_Pln& Pln, 
				      const gp_Cone& Con, 
				      const Standard_Real fu,
				      const Standard_Real lu,
				      const TopAbs_Orientation Or1,
				      const TopAbs_Orientation Or2,
				      const Standard_Real Dis, 
				      const Standard_Real Angle,
				      const gp_Circ& Spine, 
				      const Standard_Real First, 
				      const TopAbs_Orientation Ofpl,
				      const Standard_Boolean plandab,
				      const Standard_Boolean DisOnP)
{
  // Compute the chamfer surface(cone)
  gp_Ax3 PosPl = Pln.Position();
  gp_Dir Dpl = PosPl.XDirection().Crossed(PosPl.YDirection());
  gp_Dir norf = Dpl;
  if (Ofpl == TopAbs_REVERSED ) norf.Reverse();
  if ( Or1 == TopAbs_REVERSED ) Dpl.Reverse();

  // compute the origin of the conical chamfer PtPl
  gp_Pnt Or = Con.Location();
  Standard_Real u,v;
  ElSLib::PlaneParameters(PosPl,Or,u,v);
  gp_Pnt2d pt2dPln(u,v);
  ElSLib::PlaneD0(u,v,PosPl,Or);
  gp_Pnt PtPl = Or;

  gp_Pnt PtSp;
  gp_Vec DSp;
  ElCLib::D1(First,Spine,PtSp,DSp);
  gp_Dir Dx(gp_Vec(PtPl,PtSp));

  //compute the normal to the cone in PtSp
  gp_Vec deru,derv;
  gp_Pnt PtCon;
  ElSLib::Parameters(Con,PtSp,u,v);
  ElSLib::D1(u,v,Con,PtCon ,deru,derv);
  gp_Dir Dcon( deru.Crossed(derv) );
  if ( Or2 == TopAbs_REVERSED ) Dcon.Reverse();
  
  Standard_Boolean dedans = ( Dx.Dot(Dcon) <= 0.);
  Standard_Boolean ouvert = ( Dpl.Dot(Dcon) >= 0.);

    // variables used to compute the semiangle of the chamfer
  Standard_Real angCon = Con.SemiAngle();
  Standard_Real move;
  Standard_Real ChamfRad,SemiAngl;
  Standard_Boolean pointu = Standard_False;
  Standard_Real dis;
  Standard_Boolean iscylinder = Standard_False;
  Standard_Boolean isConPar   = Standard_False;

  if ( (plandab && DisOnP) || (!plandab && !DisOnP) ) {
    Standard_Real tgang = Tan(Angle), Dis11;
    Standard_Real tgCon = Abs(Tan(angCon));
    if (ouvert) { 
      move  = Dis * tgang / (1. - tgCon * tgang);
      Dis11 = move * tgCon;
      dis   = Dis + Dis11;
    }
    else {
      move  = Dis * tgang / (1. + tgCon * tgang);
      Dis11 = move * tgCon;
      dis   = Dis - Dis11;
    }

    // compute the parameters of the conical chamfer
    if (dedans) {
      ChamfRad = Spine.Radius() - Dis;
      if ( Abs(ChamfRad) < Precision::Confusion() ) pointu = Standard_True;
      if( ChamfRad < 0 ) {
#ifdef DEB
	cout<<"the chamfer can't pass"<<endl;
#endif
	return Standard_False;
      }
      SemiAngl = M_PI / 2. - Angle;      
    }
    else {
      ChamfRad = Spine.Radius() + Dis;
      SemiAngl = Angle - M_PI / 2.;
    }

    if (ouvert) {
      if (Abs(angCon) - Abs(SemiAngl) > -Precision::Confusion() ) {
	cout<<"wrong choice of angle for the chamfer"<<endl;
	return Standard_False; 
      } 
    }
  } 
  else {
    Standard_Real Dis1;
    move = Dis * Cos(angCon);
    if (ouvert) {
      SemiAngl =  Abs(angCon) + Angle;

      if ( (M_PI / 2. - SemiAngl) < Precision::Confusion() ) {
	cout <<"wrong choice of angle for the chamfer"<<endl;
	return Standard_False;
      }
      Dis1 =  move * Tan(SemiAngl) - Dis * Abs(Sin(angCon));

      if (!dedans) SemiAngl = -SemiAngl;

    }
    else {
      SemiAngl =  Abs(angCon) - Angle;

      if ( Abs(SemiAngl) < Precision::Confusion() ) {
        iscylinder = Standard_True;
        Dis1       = Dis * Abs(Sin(angCon));
      }
      else {        
        Dis1 = Dis * Abs(Sin(angCon)) - move * Tan(SemiAngl);
      }

      if (SemiAngl > Precision::Confusion())
        isConPar = Standard_True;

      if (dedans) SemiAngl = -SemiAngl;

    }

    // compute the parameters of the conical chamfer
    if (dedans) {
       ChamfRad = Spine.Radius() - Dis1;

      if ( Abs(ChamfRad) < Precision::Confusion() ) pointu = Standard_True;
      if( ChamfRad < 0 ) {
#ifdef DEB
	cout<<"the chamfer can't pass"<<endl;
#endif
	return Standard_False;
      }
    }
    else {
      ChamfRad = Spine.Radius() + Dis1;
      //Dpl.Reverse();
    }

    if (ouvert) 
      dis = Dis1 + Dis * Abs(Sin(angCon));
    else 
      dis = Dis1 - Dis * Abs(Sin(angCon));
  }

  Or.SetCoord( Or.X()+ move*Dpl.X(),
	       Or.Y()+ move*Dpl.Y(),
	       Or.Z()+ move*Dpl.Z());
  gp_Pnt Pt(Or.X()+dis*PosPl.XDirection().X(),
	    Or.Y()+dis*PosPl.XDirection().Y(),
	    Or.Z()+dis*PosPl.XDirection().Z());

  gp_Ax3 ChamfAx3(PtPl,Dpl,Dx);


  if (iscylinder) {
    Handle (Geom_CylindricalSurface)
      gcyl = new Geom_CylindricalSurface( ChamfAx3, ChamfRad );
    
    // changes due to the fact the parameters of the chamfer must go increasing
    // from surface S1 to surface S2
    if (!plandab) {
      gcyl->VReverse();// be carefull : the SemiAngle was changed
      ChamfAx3 = gcyl->Position();
    }

    // changes due to the fact we have reversed the V direction of 
    // parametrization
    if (ChamfAx3.YDirection().Dot(DSp) <= 0.) {
      ChamfAx3.YReverse();
      gcyl->SetPosition(ChamfAx3);
    }

    Data->ChangeSurf(ChFiKPart_IndexSurfaceInDS(gcyl,DStr));

    Standard_Boolean torevcha = !ChamfAx3.Direct();
    gp_Dir cylaxe = (ChamfAx3.Axis()).Direction();
    torevcha = ( (torevcha  && !plandab) || (!torevcha  && plandab));

    if (torevcha) cylaxe.Reverse();
    Standard_Boolean toreverse = (norf.Dot(cylaxe) < 0.);
   
    if ((toreverse && dedans) || (!toreverse && !dedans))
      Data->ChangeOrientation() = TopAbs_REVERSED;
    else
      Data->ChangeOrientation() = TopAbs_FORWARD; 
        
    //we load the faceInterference with the pcurves and
    // the 3d curves
    
    // Case of the plane face
    // NB: in the case 'pointu', no pcurve on the plane surface
    // and no intersection plane-chamfer are needed
    
    // intersection plane-chamfer
    Handle(Geom_Circle) GCirPln;
    Handle(Geom2d_Circle) GCir2dPln;
    gp_Ax2 CirAx2 = ChamfAx3.Ax2();
    CirAx2.SetLocation(PtPl);

    Pt.SetCoord(PtPl.X()+ChamfRad*Dx.X(),
		PtPl.Y()+ChamfRad*Dx.Y(),
		PtPl.Z()+ChamfRad*Dx.Z());
    gp_Circ CirPln(CirAx2,ChamfRad);
    GCirPln = new Geom_Circle(CirPln);
    
    //pcurve on the plane
    ElSLib::PlaneParameters(PosPl,Pt ,u,v);
    gp_Pnt2d p2dPln(u,v);
    gp_Dir2d d2d(DSp.Dot(PosPl.XDirection()),DSp.Dot(PosPl.YDirection()));
    gp_Ax22d ax2dPln(pt2dPln, gp_Dir2d(gp_Vec2d(pt2dPln,p2dPln)),d2d);
    gp_Circ2d cir2dPln(ax2dPln,ChamfRad);
    GCir2dPln = new Geom2d_Circle(cir2dPln);
    
    //pcurve on chamfer
    gp_Pnt2d p2dch;
    p2dch.SetCoord(0.,0.);
    // ElSLib::CylinderD1(0.,0.,ChamfAx3,ChamfRad,Pt,deru,derv);
    gp_Lin2d lin2dch(p2dch,gp::DX2d());
    Handle(Geom2d_Line) GLin2dCh1 = new Geom2d_Line(lin2dch);
    
    //orientation
    TopAbs_Orientation trans; 
    gp_Dir norpl = PosPl.XDirection().Crossed(PosPl.YDirection());
    toreverse = (norpl.Dot(cylaxe) < 0.);

   toreverse = (toreverse && plandab) || (!toreverse && !plandab);
 
   if ((toreverse && dedans) || (!toreverse && !dedans)) { 
      trans = TopAbs_FORWARD;
    }
    else { 
      trans = TopAbs_REVERSED; 
    }

    if (plandab) { 
      Data->ChangeInterferenceOnS1().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
			trans,GCir2dPln,GLin2dCh1);
    }
    else {
      Data->ChangeInterferenceOnS2().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
			trans,GCir2dPln,GLin2dCh1);
    }

    // Case of the conical face
    
    //intersection cone-chamfer
    Standard_Real Rad;
    if (dedans)
      Rad = ChamfRad + dis;
    else
      Rad = ChamfRad - dis;
    
    CirAx2.SetLocation(Or);
    gp_Circ CirCon(CirAx2, Rad);
    Handle(Geom_Circle) GCirCon = new Geom_Circle(CirCon);  
    
    //pcurve on chamfer
    if (plandab)
      v = sqrt(dis*dis + move*move);
    else
      v = - sqrt(dis*dis + move*move);
    p2dch.SetCoord(0.,v);
    ElSLib::CylinderD1(0.,v,ChamfAx3,ChamfRad,Pt,deru,derv);
    lin2dch.SetLocation(p2dch);
    Handle(Geom2d_Line) GLin2dCh2 = new Geom2d_Line(lin2dch);
    
    //pcurve on cone
    Pt.SetCoord(Or.X()+Rad*Dx.X(),
		Or.Y()+Rad*Dx.Y(),
		Or.Z()+Rad*Dx.Z());
    ElSLib::Parameters(Con,Pt ,u,v);
    Standard_Real tol = Precision::PConfusion();
    if(u >= 2*M_PI - tol && u <= 2*M_PI) u = 0.;
    if(u >= fu - tol && u < fu) u = fu;
    if(u <= lu + tol && u > lu) u = lu;
    if(u < fu || u > lu) u = ElCLib::InPeriod(u,fu,fu + 2*M_PI);
    ElSLib::D1(u,v,Con,Pt,deru,derv);
    gp_Pnt2d p2dCon(u,v);
    gp_Dir2d d2dCon;
    if ( deru.Dot(DSp)<=0. )
      d2dCon = - gp::DX2d();
    else
      d2dCon = gp::DX2d();
    gp_Lin2d lin2dCon(p2dCon,d2dCon);
    Handle(Geom2d_Line) GLin2dCon = new Geom2d_Line(lin2dCon);
    
    //orientation
    gp_Dir norcon = deru.Crossed(derv);

    gp_Dir DirCon   = (Con.Axis()).Direction();
    if (angCon > Precision::Confusion()) DirCon.Reverse();
    Standard_Boolean torevcon = ( norcon.Dot(DirCon) < 0. );

    if ((torevcon && dedans) || (!torevcon && !dedans) ) {
      trans = TopAbs_REVERSED;
    }
    else {
      trans = TopAbs_FORWARD;
    }
    
    if(plandab){
      Data->ChangeInterferenceOnS2().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
			trans,GLin2dCon,GLin2dCh2);
    }
    else {
      Data->ChangeInterferenceOnS1().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
			trans,GLin2dCon,GLin2dCh2);
    }
  }
  else { 
    Handle (Geom_ConicalSurface)
      gcon = new Geom_ConicalSurface( ChamfAx3, SemiAngl, ChamfRad );
    
    // changes due to the fact the parameters of the chamfer must go increasing
    // from surface S1 to surface S2
    if (!plandab) {
      gcon->VReverse();// be carefull : the SemiAngle was changed
      ChamfAx3 = gcon->Position();
      SemiAngl = gcon->SemiAngle();
    }

    // changes due to the fact we have reversed the V direction of 
    // parametrization
    if (ChamfAx3.YDirection().Dot(DSp) <= 0.) {
      ChamfAx3.YReverse();
      gcon->SetPosition(ChamfAx3);
    }

    Data->ChangeSurf(ChFiKPart_IndexSurfaceInDS(gcon,DStr));

    //compute the chamfer's orientation according to the orientation
    // of the faces
    
    //search the normal to the conical chamfer
    gp_Pnt P;
    u = 0.;
    if (plandab)
      v = sqrt(dis*dis + move*move);
    else
      v = - sqrt(dis*dis + move*move);

    ElSLib::ConeD1(u,v,ChamfAx3,ChamfRad,SemiAngl,P,deru,derv);
    gp_Dir norchamf(deru.Crossed(derv));
    
    Standard_Boolean toreverse = (norf.Dot(norchamf) < 0.);

    if (isConPar)  toreverse = !toreverse;
    
    if (toreverse) 
      Data->ChangeOrientation() = TopAbs_REVERSED;
    else
      Data->ChangeOrientation() = TopAbs_FORWARD;

    //we load the faceInterference with the pcurves and
    // the 3d curves
    
    // Case of the plane face
    // NB: in the case 'pointu', no pcurve on the plane surface
    // and no intersection plane-chamfer are needed
    
    // intersection plane-chamfer
    Handle(Geom_Circle) GCirPln;
    Handle(Geom2d_Circle) GCir2dPln;
    gp_Ax2 CirAx2 = ChamfAx3.Ax2();
    CirAx2.SetLocation(PtPl);
    
    if (!pointu) {
      Pt.SetCoord(PtPl.X()+ChamfRad*Dx.X(),
		  PtPl.Y()+ChamfRad*Dx.Y(),
		  PtPl.Z()+ChamfRad*Dx.Z());
      gp_Circ CirPln(CirAx2,ChamfRad);
      GCirPln = new Geom_Circle(CirPln);
      
      //pcurve on the plane
      ElSLib::PlaneParameters(PosPl,Pt ,u,v);
      gp_Pnt2d p2dPln(u,v);
      gp_Dir2d d2d(DSp.Dot(PosPl.XDirection()),DSp.Dot(PosPl.YDirection()));
      gp_Ax22d ax2dPln(pt2dPln, gp_Dir2d(gp_Vec2d(pt2dPln,p2dPln)),d2d);
      gp_Circ2d cir2dPln(ax2dPln,ChamfRad);
      GCir2dPln = new Geom2d_Circle(cir2dPln);
    }

    //pcurve on chamfer
    gp_Pnt2d p2dch;
    p2dch.SetCoord(0.,0.);
    ElSLib::ConeD1(0.,0.,ChamfAx3,ChamfRad,SemiAngl,Pt,deru,derv);
    gp_Lin2d lin2dch(p2dch,gp::DX2d());
    Handle(Geom2d_Line) GLin2dCh1 = new Geom2d_Line(lin2dch);
    
    //orientation
    TopAbs_Orientation trans; 
    gp_Dir norpl = PosPl.XDirection().Crossed(PosPl.YDirection());
    if (!pointu)
      norchamf.SetXYZ (deru.Crossed(derv).XYZ());
    toreverse = ( norchamf.Dot(norpl) <= 0. );

    if (isConPar)  toreverse = !toreverse;

    if ((toreverse && plandab) || (!toreverse && !plandab)){ 
      trans = TopAbs_FORWARD;
    }
    else { 
      trans = TopAbs_REVERSED; 
    }

    if (plandab) { 
      Data->ChangeInterferenceOnS1().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
			trans,GCir2dPln,GLin2dCh1);
    }
    else {
      Data->ChangeInterferenceOnS2().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
			trans,GCir2dPln,GLin2dCh1);
    }

    // Case of the conical face
    
    //intersection cone-chamfer
    Standard_Real Rad;
    if (dedans)
      Rad = ChamfRad + dis;
    else
      Rad = ChamfRad - dis;
    
    CirAx2.SetLocation(Or);
    gp_Circ CirCon(CirAx2, Rad);
    Handle(Geom_Circle) GCirCon = new Geom_Circle(CirCon);  
    
    //pcurve on chamfer
    if (plandab)
      v = sqrt(dis*dis + move*move);
    else
      v = - sqrt(dis*dis + move*move);
    p2dch.SetCoord(0.,v);
    ElSLib::ConeD1(0.,v,ChamfAx3,ChamfRad,SemiAngl,Pt,deru,derv);
    lin2dch.SetLocation(p2dch);
    Handle(Geom2d_Line) GLin2dCh2 = new Geom2d_Line(lin2dch);
    
    //pcurve on cone
    norchamf.SetXYZ (deru.Crossed(derv).XYZ());

    Pt.SetCoord(Or.X()+Rad*Dx.X(),
		Or.Y()+Rad*Dx.Y(),
		Or.Z()+Rad*Dx.Z());
    ElSLib::Parameters(Con,Pt ,u,v);
    Standard_Real tol = Precision::PConfusion();
    if (u >= 2*M_PI - tol && u <= 2*M_PI) u = 0.;
    if (u >= fu - tol && u < fu) u = fu;
    if (u <= lu + tol && u > lu) u = lu;
    if (u < fu || u > lu) u = ElCLib::InPeriod(u,fu,fu + 2*M_PI);
    ElSLib::D1(u,v,Con,Pt,deru,derv);
    gp_Pnt2d p2dCon(u,v);
    gp_Dir2d d2dCon;
    if ( deru.Dot(DSp)<=0. )
      d2dCon = - gp::DX2d();
    else
      d2dCon = gp::DX2d();
    gp_Lin2d lin2dCon(p2dCon,d2dCon);
    Handle(Geom2d_Line) GLin2dCon = new Geom2d_Line(lin2dCon);
    
    //orientation
    gp_Dir norcon = deru.Crossed(derv);

    gp_Dir DirCon   = (Con.Axis()).Direction();
    gp_Dir DirChamf = (gcon->Axis()).Direction();
    if (angCon > Precision::Confusion()) DirCon.Reverse();
    if (SemiAngl > Precision::Confusion()) DirChamf.Reverse();   

    Standard_Boolean torevcon = ( norcon.Dot(DirCon) > 0. );
    Standard_Boolean torevcha = ( norchamf.Dot(DirChamf) > 0. );

    toreverse = ( (torevcon && !torevcha) || (!torevcon && torevcha) );

    if ((toreverse && plandab) || (!toreverse && !plandab) ) {
      trans = TopAbs_REVERSED;
    }
    else {
      trans = TopAbs_FORWARD;
    } 

    if(plandab){
      Data->ChangeInterferenceOnS2().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
			trans,GLin2dCon,GLin2dCh2);
    }
    else {
      Data->ChangeInterferenceOnS1().
	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
			trans,GLin2dCon,GLin2dCh2);
    }
    
  }    
  return Standard_True;
}
Commit	Line	Data
b311480e	1	// Created on: 1998-06-18
	2	// Created by: Philippe NOUAILLE
	3	// Copyright (c) 1998-1999 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 <ChFiKPart_ComputeData.ixx>
	18
	19	#include <Precision.hxx>
	20	#include <gp.hxx>
	21	#include <gp_Pnt2d.hxx>
	22	#include <gp_Dir2d.hxx>
	23	#include <gp_Lin2d.hxx>
	24
	25	#include <gp_Dir.hxx>
	26	#include <gp_Pnt.hxx>
	27	#include <gp_Ax2.hxx>
	28	#include <gp_Ax3.hxx>
	29	#include <gp_Vec.hxx>
	30	#include <gp_Circ.hxx>
	31
	32	#include <ElCLib.hxx>
	33	#include <ElSLib.hxx>
	34
	35	#include <Geom2d_Line.hxx>
	36	#include <Geom2d_Circle.hxx>
	37	#include <Geom_Circle.hxx>
	38	#include <Geom_ConicalSurface.hxx>
	39	#include <Geom_CylindricalSurface.hxx>
	40
	41	#include <ChFiKPart_ComputeData_Fcts.hxx>
	42
	43
	44	//=======================================================================
	45	//function : MakeChAsym
	46	//purpose : Compute the chamfer in the particular case Plane/Cone or
	47	// Cylinder/Plane
	48	// Compute the SurfData <Data> of the chamfer build on the <Spine>
	49	// between the plane <Pln> and the cone <Con>, with the
	50	// distances <Dis1> on <Pln> and <Dis2> on <Con>.
	51	// <Or1> and <Or2> are the orientations of <Pln> and <Con>
	52	// and <Ofpl> this of the face carried by <Pln>.
	53	// <First> is the start point on the <Spine>
	54	// <Plandab> is equal to True if the plane is the surface S1
	55	// <fu> and <lu> are the first and last u parameters of the
	56	// cone
	57	//out : True if the chanfer has been computed
	58	// False else
	59	//=======================================================================
	60
	61	Standard_Boolean ChFiKPart_MakeChAsym(TopOpeBRepDS_DataStructure& DStr,
	62	const Handle(ChFiDS_SurfData)& Data,
	63	const gp_Pln& Pln,
	64	const gp_Cone& Con,
	65	const Standard_Real fu,
	66	const Standard_Real lu,
	67	const TopAbs_Orientation Or1,
	68	const TopAbs_Orientation Or2,
	69	const Standard_Real Dis,
	70	const Standard_Real Angle,
	71	const gp_Circ& Spine,
	72	const Standard_Real First,
	73	const TopAbs_Orientation Ofpl,
	74	const Standard_Boolean plandab,
	75	const Standard_Boolean DisOnP)
	76	{
	77	// Compute the chamfer surface(cone)
	78	gp_Ax3 PosPl = Pln.Position();
	79	gp_Dir Dpl = PosPl.XDirection().Crossed(PosPl.YDirection());
80	gp_Dir norf = Dpl;
81	if (Ofpl == TopAbs_REVERSED ) norf.Reverse();
82	if ( Or1 == TopAbs_REVERSED ) Dpl.Reverse();
83
84	// compute the origin of the conical chamfer PtPl
85	gp_Pnt Or = Con.Location();
86	Standard_Real u,v;
87	ElSLib::PlaneParameters(PosPl,Or,u,v);
88	gp_Pnt2d pt2dPln(u,v);
89	ElSLib::PlaneD0(u,v,PosPl,Or);
90	gp_Pnt PtPl = Or;
91
92	gp_Pnt PtSp;
93	gp_Vec DSp;
94	ElCLib::D1(First,Spine,PtSp,DSp);
95	gp_Dir Dx(gp_Vec(PtPl,PtSp));
96
97	//compute the normal to the cone in PtSp
98	gp_Vec deru,derv;
99	gp_Pnt PtCon;
100	ElSLib::Parameters(Con,PtSp,u,v);
101	ElSLib::D1(u,v,Con,PtCon ,deru,derv);
102	gp_Dir Dcon( deru.Crossed(derv) );
103	if ( Or2 == TopAbs_REVERSED ) Dcon.Reverse();
104
105	Standard_Boolean dedans = ( Dx.Dot(Dcon) <= 0.);
106	Standard_Boolean ouvert = ( Dpl.Dot(Dcon) >= 0.);
107
108	// variables used to compute the semiangle of the chamfer
109	Standard_Real angCon = Con.SemiAngle();
110	Standard_Real move;
111	Standard_Real ChamfRad,SemiAngl;
112	Standard_Boolean pointu = Standard_False;
113	Standard_Real dis;
114	Standard_Boolean iscylinder = Standard_False;
115	Standard_Boolean isConPar = Standard_False;
116
117	if ( (plandab && DisOnP) \|\| (!plandab && !DisOnP) ) {
118	Standard_Real tgang = Tan(Angle), Dis11;
119	Standard_Real tgCon = Abs(Tan(angCon));
120	if (ouvert) {
121	move = Dis * tgang / (1. - tgCon * tgang);
122	Dis11 = move * tgCon;
123	dis = Dis + Dis11;
124	}
125	else {
126	move = Dis * tgang / (1. + tgCon * tgang);
127	Dis11 = move * tgCon;
128	dis = Dis - Dis11;
129	}
130
131	// compute the parameters of the conical chamfer
132	if (dedans) {
133	ChamfRad = Spine.Radius() - Dis;
134	if ( Abs(ChamfRad) < Precision::Confusion() ) pointu = Standard_True;
135	if( ChamfRad < 0 ) {
136	#ifdef DEB
81bba717	137	cout<<"the chamfer can't pass"<<endl;
7fd59977	138	#endif
	139	return Standard_False;
	140	}
c6541a0c	141	SemiAngl = M_PI / 2. - Angle;
7fd59977	142	}
	143	else {
	144	ChamfRad = Spine.Radius() + Dis;
c6541a0c	145	SemiAngl = Angle - M_PI / 2.;
7fd59977	146	}
	147
	148	if (ouvert) {
	149	if (Abs(angCon) - Abs(SemiAngl) > -Precision::Confusion() ) {
81bba717	150	cout<<"wrong choice of angle for the chamfer"<<endl;
7fd59977	151	return Standard_False;
	152	}
	153	}
	154	}
	155	else {
	156	Standard_Real Dis1;
	157	move = Dis * Cos(angCon);
	158	if (ouvert) {
	159	SemiAngl = Abs(angCon) + Angle;
	160
c6541a0c	161	if ( (M_PI / 2. - SemiAngl) < Precision::Confusion() ) {
81bba717	162	cout <<"wrong choice of angle for the chamfer"<<endl;
7fd59977	163	return Standard_False;
	164	}
	165	Dis1 = move * Tan(SemiAngl) - Dis * Abs(Sin(angCon));
	166
	167	if (!dedans) SemiAngl = -SemiAngl;
	168
	169	}
	170	else {
	171	SemiAngl = Abs(angCon) - Angle;
	172
	173	if ( Abs(SemiAngl) < Precision::Confusion() ) {
	174	iscylinder = Standard_True;
	175	Dis1 = Dis * Abs(Sin(angCon));
	176	}
	177	else {
	178	Dis1 = Dis * Abs(Sin(angCon)) - move * Tan(SemiAngl);
	179	}
	180
	181	if (SemiAngl > Precision::Confusion())
	182	isConPar = Standard_True;
	183
	184	if (dedans) SemiAngl = -SemiAngl;
	185
	186	}
	187
	188	// compute the parameters of the conical chamfer
	189	if (dedans) {
	190	ChamfRad = Spine.Radius() - Dis1;
	191
	192	if ( Abs(ChamfRad) < Precision::Confusion() ) pointu = Standard_True;
	193	if( ChamfRad < 0 ) {
	194	#ifdef DEB
81bba717	195	cout<<"the chamfer can't pass"<<endl;
7fd59977	196	#endif
	197	return Standard_False;
	198	}
	199	}
	200	else {
	201	ChamfRad = Spine.Radius() + Dis1;
	202	//Dpl.Reverse();
	203	}
	204
	205	if (ouvert)
	206	dis = Dis1 + Dis * Abs(Sin(angCon));
	207	else
	208	dis = Dis1 - Dis * Abs(Sin(angCon));
	209	}
	210
	211	Or.SetCoord( Or.X()+ move*Dpl.X(),
	212	Or.Y()+ move*Dpl.Y(),
	213	Or.Z()+ move*Dpl.Z());
	214	gp_Pnt Pt(Or.X()+dis*PosPl.XDirection().X(),
	215	Or.Y()+dis*PosPl.XDirection().Y(),
	216	Or.Z()+dis*PosPl.XDirection().Z());
	217
	218	gp_Ax3 ChamfAx3(PtPl,Dpl,Dx);
	219
	220
	221	if (iscylinder) {
	222	Handle (Geom_CylindricalSurface)
	223	gcyl = new Geom_CylindricalSurface( ChamfAx3, ChamfRad );
	224
	225	// changes due to the fact the parameters of the chamfer must go increasing
	226	// from surface S1 to surface S2
	227	if (!plandab) {
	228	gcyl->VReverse();// be carefull : the SemiAngle was changed
	229	ChamfAx3 = gcyl->Position();
	230	}
	231
	232	// changes due to the fact we have reversed the V direction of
	233	// parametrization
	234	if (ChamfAx3.YDirection().Dot(DSp) <= 0.) {
	235	ChamfAx3.YReverse();
	236	gcyl->SetPosition(ChamfAx3);
	237	}
	238
	239	Data->ChangeSurf(ChFiKPart_IndexSurfaceInDS(gcyl,DStr));
	240
	241	Standard_Boolean torevcha = !ChamfAx3.Direct();
	242	gp_Dir cylaxe = (ChamfAx3.Axis()).Direction();
	243	torevcha = ( (torevcha && !plandab) \|\| (!torevcha && plandab));
	244
	245	if (torevcha) cylaxe.Reverse();
	246	Standard_Boolean toreverse = (norf.Dot(cylaxe) < 0.);
	247
	248	if ((toreverse && dedans) \|\| (!toreverse && !dedans))
	249	Data->ChangeOrientation() = TopAbs_REVERSED;
	250	else
	251	Data->ChangeOrientation() = TopAbs_FORWARD;
	252
	253	//we load the faceInterference with the pcurves and
	254	// the 3d curves
	255
	256	// Case of the plane face
	257	// NB: in the case 'pointu', no pcurve on the plane surface
	258	// and no intersection plane-chamfer are needed
	259
260	// intersection plane-chamfer
261	Handle(Geom_Circle) GCirPln;
262	Handle(Geom2d_Circle) GCir2dPln;
263	gp_Ax2 CirAx2 = ChamfAx3.Ax2();
264	CirAx2.SetLocation(PtPl);
265
266	Pt.SetCoord(PtPl.X()+ChamfRad*Dx.X(),
267	PtPl.Y()+ChamfRad*Dx.Y(),
268	PtPl.Z()+ChamfRad*Dx.Z());
269	gp_Circ CirPln(CirAx2,ChamfRad);
270	GCirPln = new Geom_Circle(CirPln);
271
272	//pcurve on the plane
273	ElSLib::PlaneParameters(PosPl,Pt ,u,v);
274	gp_Pnt2d p2dPln(u,v);
275	gp_Dir2d d2d(DSp.Dot(PosPl.XDirection()),DSp.Dot(PosPl.YDirection()));
276	gp_Ax22d ax2dPln(pt2dPln, gp_Dir2d(gp_Vec2d(pt2dPln,p2dPln)),d2d);
277	gp_Circ2d cir2dPln(ax2dPln,ChamfRad);
278	GCir2dPln = new Geom2d_Circle(cir2dPln);
279
280	//pcurve on chamfer
281	gp_Pnt2d p2dch;
282	p2dch.SetCoord(0.,0.);
283	// ElSLib::CylinderD1(0.,0.,ChamfAx3,ChamfRad,Pt,deru,derv);
284	gp_Lin2d lin2dch(p2dch,gp::DX2d());
285	Handle(Geom2d_Line) GLin2dCh1 = new Geom2d_Line(lin2dch);
286
287	//orientation
288	TopAbs_Orientation trans;
289	gp_Dir norpl = PosPl.XDirection().Crossed(PosPl.YDirection());
290	toreverse = (norpl.Dot(cylaxe) < 0.);
291
292	toreverse = (toreverse && plandab) \|\| (!toreverse && !plandab);
293
294	if ((toreverse && dedans) \|\| (!toreverse && !dedans)) {
295	trans = TopAbs_FORWARD;
296	}
297	else {
298	trans = TopAbs_REVERSED;
299	}
300
301	if (plandab) {
302	Data->ChangeInterferenceOnS1().
303	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
304	trans,GCir2dPln,GLin2dCh1);
305	}
306	else {
307	Data->ChangeInterferenceOnS2().
308	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
309	trans,GCir2dPln,GLin2dCh1);
310	}
311
312	// Case of the conical face
313
314	//intersection cone-chamfer
315	Standard_Real Rad;
316	if (dedans)
317	Rad = ChamfRad + dis;
318	else
319	Rad = ChamfRad - dis;
320
321	CirAx2.SetLocation(Or);
322	gp_Circ CirCon(CirAx2, Rad);
323	Handle(Geom_Circle) GCirCon = new Geom_Circle(CirCon);
324
325	//pcurve on chamfer
326	if (plandab)
327	v = sqrt(disdis + movemove);
328	else
329	v = - sqrt(disdis + movemove);
330	p2dch.SetCoord(0.,v);
331	ElSLib::CylinderD1(0.,v,ChamfAx3,ChamfRad,Pt,deru,derv);
332	lin2dch.SetLocation(p2dch);
333	Handle(Geom2d_Line) GLin2dCh2 = new Geom2d_Line(lin2dch);
334
335	//pcurve on cone
336	Pt.SetCoord(Or.X()+Rad*Dx.X(),
337	Or.Y()+Rad*Dx.Y(),
338	Or.Z()+Rad*Dx.Z());
339	ElSLib::Parameters(Con,Pt ,u,v);
340	Standard_Real tol = Precision::PConfusion();
c6541a0c	341	if(u >= 2M_PI - tol && u <= 2M_PI) u = 0.;
7fd59977	342	if(u >= fu - tol && u < fu) u = fu;
7fd59977	343	if(u <= lu + tol && u > lu) u = lu;
c6541a0c	344	if(u < fu \|\| u > lu) u = ElCLib::InPeriod(u,fu,fu + 2*M_PI);
7fd59977	345	ElSLib::D1(u,v,Con,Pt,deru,derv);
	346	gp_Pnt2d p2dCon(u,v);
	347	gp_Dir2d d2dCon;
	348	if ( deru.Dot(DSp)<=0. )
	349	d2dCon = - gp::DX2d();
	350	else
	351	d2dCon = gp::DX2d();
	352	gp_Lin2d lin2dCon(p2dCon,d2dCon);
	353	Handle(Geom2d_Line) GLin2dCon = new Geom2d_Line(lin2dCon);
	354
	355	//orientation
	356	gp_Dir norcon = deru.Crossed(derv);
	357
	358	gp_Dir DirCon = (Con.Axis()).Direction();
	359	if (angCon > Precision::Confusion()) DirCon.Reverse();
	360	Standard_Boolean torevcon = ( norcon.Dot(DirCon) < 0. );
	361
	362	if ((torevcon && dedans) \|\| (!torevcon && !dedans) ) {
	363	trans = TopAbs_REVERSED;
	364	}
	365	else {
	366	trans = TopAbs_FORWARD;
	367	}
	368
	369	if(plandab){
	370	Data->ChangeInterferenceOnS2().
	371	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
	372	trans,GLin2dCon,GLin2dCh2);
	373	}
	374	else {
	375	Data->ChangeInterferenceOnS1().
	376	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
	377	trans,GLin2dCon,GLin2dCh2);
	378	}
	379	}
	380	else {
	381	Handle (Geom_ConicalSurface)
	382	gcon = new Geom_ConicalSurface( ChamfAx3, SemiAngl, ChamfRad );
	383
	384	// changes due to the fact the parameters of the chamfer must go increasing
	385	// from surface S1 to surface S2
	386	if (!plandab) {
	387	gcon->VReverse();// be carefull : the SemiAngle was changed
	388	ChamfAx3 = gcon->Position();
	389	SemiAngl = gcon->SemiAngle();
	390	}
	391
	392	// changes due to the fact we have reversed the V direction of
	393	// parametrization
	394	if (ChamfAx3.YDirection().Dot(DSp) <= 0.) {
	395	ChamfAx3.YReverse();
	396	gcon->SetPosition(ChamfAx3);
	397	}
	398
	399	Data->ChangeSurf(ChFiKPart_IndexSurfaceInDS(gcon,DStr));
	400
	401	//compute the chamfer's orientation according to the orientation
	402	// of the faces
	403
	404	//search the normal to the conical chamfer
	405	gp_Pnt P;
	406	u = 0.;
	407	if (plandab)
	408	v = sqrt(disdis + movemove);
409	else
410	v = - sqrt(disdis + movemove);
411
412	ElSLib::ConeD1(u,v,ChamfAx3,ChamfRad,SemiAngl,P,deru,derv);
413	gp_Dir norchamf(deru.Crossed(derv));
414
415	Standard_Boolean toreverse = (norf.Dot(norchamf) < 0.);
416
417	if (isConPar) toreverse = !toreverse;
418
419	if (toreverse)
420	Data->ChangeOrientation() = TopAbs_REVERSED;
421	else
422	Data->ChangeOrientation() = TopAbs_FORWARD;
423
424	//we load the faceInterference with the pcurves and
425	// the 3d curves
426
427	// Case of the plane face
428	// NB: in the case 'pointu', no pcurve on the plane surface
429	// and no intersection plane-chamfer are needed
430
431	// intersection plane-chamfer
432	Handle(Geom_Circle) GCirPln;
433	Handle(Geom2d_Circle) GCir2dPln;
434	gp_Ax2 CirAx2 = ChamfAx3.Ax2();
435	CirAx2.SetLocation(PtPl);
436
437	if (!pointu) {
438	Pt.SetCoord(PtPl.X()+ChamfRad*Dx.X(),
439	PtPl.Y()+ChamfRad*Dx.Y(),
440	PtPl.Z()+ChamfRad*Dx.Z());
441	gp_Circ CirPln(CirAx2,ChamfRad);
442	GCirPln = new Geom_Circle(CirPln);
443
444	//pcurve on the plane
445	ElSLib::PlaneParameters(PosPl,Pt ,u,v);
446	gp_Pnt2d p2dPln(u,v);
447	gp_Dir2d d2d(DSp.Dot(PosPl.XDirection()),DSp.Dot(PosPl.YDirection()));
448	gp_Ax22d ax2dPln(pt2dPln, gp_Dir2d(gp_Vec2d(pt2dPln,p2dPln)),d2d);
449	gp_Circ2d cir2dPln(ax2dPln,ChamfRad);
450	GCir2dPln = new Geom2d_Circle(cir2dPln);
451	}
452
453	//pcurve on chamfer
454	gp_Pnt2d p2dch;
455	p2dch.SetCoord(0.,0.);
456	ElSLib::ConeD1(0.,0.,ChamfAx3,ChamfRad,SemiAngl,Pt,deru,derv);
457	gp_Lin2d lin2dch(p2dch,gp::DX2d());
458	Handle(Geom2d_Line) GLin2dCh1 = new Geom2d_Line(lin2dch);
459
460	//orientation
461	TopAbs_Orientation trans;
462	gp_Dir norpl = PosPl.XDirection().Crossed(PosPl.YDirection());
463	if (!pointu)
464	norchamf.SetXYZ (deru.Crossed(derv).XYZ());
465	toreverse = ( norchamf.Dot(norpl) <= 0. );
466
467	if (isConPar) toreverse = !toreverse;
468
469	if ((toreverse && plandab) \|\| (!toreverse && !plandab)){
470	trans = TopAbs_FORWARD;
471	}
472	else {
473	trans = TopAbs_REVERSED;
474	}
475
476	if (plandab) {
477	Data->ChangeInterferenceOnS1().
478	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
479	trans,GCir2dPln,GLin2dCh1);
480	}
481	else {
482	Data->ChangeInterferenceOnS2().
483	SetInterference(ChFiKPart_IndexCurveInDS(GCirPln,DStr),
484	trans,GCir2dPln,GLin2dCh1);
485	}
486
487	// Case of the conical face
488
489	//intersection cone-chamfer
490	Standard_Real Rad;
491	if (dedans)
492	Rad = ChamfRad + dis;
493	else
494	Rad = ChamfRad - dis;
495
496	CirAx2.SetLocation(Or);
497	gp_Circ CirCon(CirAx2, Rad);
498	Handle(Geom_Circle) GCirCon = new Geom_Circle(CirCon);
499
500	//pcurve on chamfer
501	if (plandab)
502	v = sqrt(disdis + movemove);
503	else
504	v = - sqrt(disdis + movemove);
505	p2dch.SetCoord(0.,v);
506	ElSLib::ConeD1(0.,v,ChamfAx3,ChamfRad,SemiAngl,Pt,deru,derv);
507	lin2dch.SetLocation(p2dch);
508	Handle(Geom2d_Line) GLin2dCh2 = new Geom2d_Line(lin2dch);
509
510	//pcurve on cone
511	norchamf.SetXYZ (deru.Crossed(derv).XYZ());
512
513	Pt.SetCoord(Or.X()+Rad*Dx.X(),
514	Or.Y()+Rad*Dx.Y(),
515	Or.Z()+Rad*Dx.Z());
516	ElSLib::Parameters(Con,Pt ,u,v);
517	Standard_Real tol = Precision::PConfusion();
c6541a0c	518	if (u >= 2M_PI - tol && u <= 2M_PI) u = 0.;
7fd59977	519	if (u >= fu - tol && u < fu) u = fu;
7fd59977	520	if (u <= lu + tol && u > lu) u = lu;
c6541a0c	521	if (u < fu \|\| u > lu) u = ElCLib::InPeriod(u,fu,fu + 2*M_PI);
7fd59977	522	ElSLib::D1(u,v,Con,Pt,deru,derv);
	523	gp_Pnt2d p2dCon(u,v);
	524	gp_Dir2d d2dCon;
	525	if ( deru.Dot(DSp)<=0. )
	526	d2dCon = - gp::DX2d();
	527	else
	528	d2dCon = gp::DX2d();
	529	gp_Lin2d lin2dCon(p2dCon,d2dCon);
	530	Handle(Geom2d_Line) GLin2dCon = new Geom2d_Line(lin2dCon);
	531
	532	//orientation
	533	gp_Dir norcon = deru.Crossed(derv);
	534
	535	gp_Dir DirCon = (Con.Axis()).Direction();
	536	gp_Dir DirChamf = (gcon->Axis()).Direction();
	537	if (angCon > Precision::Confusion()) DirCon.Reverse();
	538	if (SemiAngl > Precision::Confusion()) DirChamf.Reverse();
	539
	540	Standard_Boolean torevcon = ( norcon.Dot(DirCon) > 0. );
	541	Standard_Boolean torevcha = ( norchamf.Dot(DirChamf) > 0. );
	542
	543	toreverse = ( (torevcon && !torevcha) \|\| (!torevcon && torevcha) );
	544
	545	if ((toreverse && plandab) \|\| (!toreverse && !plandab) ) {
	546	trans = TopAbs_REVERSED;
	547	}
	548	else {
	549	trans = TopAbs_FORWARD;
	550	}
	551
	552	if(plandab){
	553	Data->ChangeInterferenceOnS2().
	554	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
	555	trans,GLin2dCon,GLin2dCh2);
	556	}
	557	else {
	558	Data->ChangeInterferenceOnS1().
	559	SetInterference(ChFiKPart_IndexCurveInDS(GCirCon,DStr),
	560	trans,GLin2dCon,GLin2dCh2);
	561	}
	562
	563	}
	564	return Standard_True;
	565	}
	566
	567
	568
	569