// Copyright (c) 1995-1999 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.

#ifndef OCCT_DEBUG
#define No_Standard_RangeError
#define No_Standard_OutOfRange
#endif


#include <IntImp_ComputeTangence.hxx>
#include <Standard_ConstructionError.hxx>
#include <Precision.hxx>

#define SURF1 (*((ThePSurface *)(surf1)))
#define SURF2 (*((ThePSurface *)(surf2)))


IntImp_ZerParFunc::IntImp_ZerParFunc() { 
  Standard_ConstructionError::Raise(" Empty Constructor : IntImp_ZerParFunc");
}

IntImp_ZerParFunc::IntImp_ZerParFunc(const ThePSurface& S1 ,
				     const ThePSurface& S2) {
    surf1 = (Standard_Address)(&S1);
    surf2 = (Standard_Address)(&S2);

    ua0 = ThePSurfaceTool::FirstUParameter(SURF1); //-- ThePSurfaceTool::UIntervalFirst(surf1);
    va0 = ThePSurfaceTool::FirstVParameter(SURF1); //-- ThePSurfaceTool::VIntervalFirst(surf1);
    ua1 = ThePSurfaceTool::LastUParameter(SURF1);  //-- ThePSurfaceTool::UIntervalLast(surf1);
    va1 = ThePSurfaceTool::LastVParameter(SURF1);  //-- ThePSurfaceTool::VIntervalLast(surf1);

    ub0 = ThePSurfaceTool::FirstUParameter(SURF2); //-- ThePSurfaceTool::UIntervalFirst(SURF2);
    vb0 = ThePSurfaceTool::FirstVParameter(SURF2); //-- ThePSurfaceTool::VIntervalFirst(surf2);
    ub1 = ThePSurfaceTool::LastUParameter(SURF2);  //-- ThePSurfaceTool::UIntervalLast(surf2);
    vb1 = ThePSurfaceTool::LastVParameter(SURF2);  //-- ThePSurfaceTool::VIntervalLast(surf2);

    ures1 = ThePSurfaceTool::UResolution(SURF1,Precision::Confusion());
    vres1 = ThePSurfaceTool::VResolution(SURF1,Precision::Confusion());

    ures2 = ThePSurfaceTool::UResolution(SURF2,Precision::Confusion());
    vres2 = ThePSurfaceTool::VResolution(SURF2,Precision::Confusion());

    compute = Standard_False;  
    tangent = Standard_False;
}

Standard_Integer IntImp_ZerParFunc::NbVariables() const { return 3;}

Standard_Integer IntImp_ZerParFunc::NbEquations() const { return 3;}

Standard_Boolean IntImp_ZerParFunc::Value(const math_Vector& X,
					  math_Vector& F) {

  switch (chxIso) {
  case IntImp_UIsoparametricOnCaro1:
    {
      pntsol1= ThePSurfaceTool::Value(SURF1,paramConst,X(1));
      pntsol2= ThePSurfaceTool::Value(SURF2,X(2),X(3));
    }
    break;
  case IntImp_VIsoparametricOnCaro1:
    {
      pntsol1= ThePSurfaceTool::Value(SURF1,X(1),paramConst);
      pntsol2= ThePSurfaceTool::Value(SURF2,X(2),X(3));
    }
    break;
  case IntImp_UIsoparametricOnCaro2:
    {
      pntsol1= ThePSurfaceTool::Value(SURF1,X(1),X(2));
      pntsol2= ThePSurfaceTool::Value(SURF2,paramConst,X(3));
    }
    break;
  case IntImp_VIsoparametricOnCaro2:
    {
      pntsol1= ThePSurfaceTool::Value(SURF1,X(1),X(2));
      pntsol2= ThePSurfaceTool::Value(SURF2,X(3),paramConst);
    }
    break;
  }

  f[0] = F(1) = pntsol1.X() - pntsol2.X();
  f[1] = F(2) = pntsol1.Y() - pntsol2.Y();
  f[2] = F(3) = pntsol1.Z() - pntsol2.Z();
  return Standard_True;
}

Standard_Boolean IntImp_ZerParFunc::Derivatives (const math_Vector& X,
						 math_Matrix& D) {
  
  switch (chxIso) {
  case IntImp_UIsoparametricOnCaro1:
    {
      ThePSurfaceTool::D1(SURF1,paramConst,X(1),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(2),X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[1].X();
      D(1,2) =-dpuv[2].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[1].Y();
      D(2,2) =-dpuv[2].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[1].Z();
      D(3,2) =-dpuv[2].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_VIsoparametricOnCaro1:
    {
      ThePSurfaceTool::D1(SURF1,X(1),paramConst,pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(2),X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) =-dpuv[2].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) =-dpuv[2].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) =-dpuv[2].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_UIsoparametricOnCaro2:
    {
      ThePSurfaceTool::D1(SURF1,X(1),X(2),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,paramConst,X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) = dpuv[1].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) = dpuv[1].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) = dpuv[1].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_VIsoparametricOnCaro2:
    {
      ThePSurfaceTool::D1(SURF1,X(1),X(2),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(3),paramConst,pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) = dpuv[1].X();
      D(1,3) =-dpuv[2].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) = dpuv[1].Y();
      D(2,3) =-dpuv[2].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) = dpuv[1].Z();
      D(3,3) =-dpuv[2].Z();
    }
    break;
  }
  return Standard_True;
}

Standard_Boolean IntImp_ZerParFunc::Values( const math_Vector& X,
					   math_Vector& F,
					   math_Matrix& D) {

  switch (chxIso) {
  case IntImp_UIsoparametricOnCaro1:
    {
      ThePSurfaceTool::D1(SURF1,paramConst,X(1),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(2),X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[1].X();
      D(1,2) =-dpuv[2].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[1].Y();
      D(2,2) =-dpuv[2].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[1].Z();
      D(3,2) =-dpuv[2].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_VIsoparametricOnCaro1:
    {
      ThePSurfaceTool::D1(SURF1,X(1),paramConst,pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(2),X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) =-dpuv[2].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) =-dpuv[2].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) =-dpuv[2].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_UIsoparametricOnCaro2:
    {
      ThePSurfaceTool::D1(SURF1,X(1),X(2),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,paramConst,X(3),pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) = dpuv[1].X();
      D(1,3) =-dpuv[3].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) = dpuv[1].Y();
      D(2,3) =-dpuv[3].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) = dpuv[1].Z();
      D(3,3) =-dpuv[3].Z();
    }
    break;
  case IntImp_VIsoparametricOnCaro2:
    {
      ThePSurfaceTool::D1(SURF1,X(1),X(2),pntsol1,dpuv[0],dpuv[1]);
      ThePSurfaceTool::D1(SURF2,X(3),paramConst,pntsol2,dpuv[2],dpuv[3]);
      D(1,1) = dpuv[0].X();
      D(1,2) = dpuv[1].X();
      D(1,3) =-dpuv[2].X();
      D(2,1) = dpuv[0].Y();
      D(2,2) = dpuv[1].Y();
      D(2,3) =-dpuv[2].Y();
      D(3,1) = dpuv[0].Z();
      D(3,2) = dpuv[1].Z();
      D(3,3) =-dpuv[2].Z();
    }
    break;
  }
  f[0] = F(1) = pntsol1.X() - pntsol2.X();
  f[1] = F(2) = pntsol1.Y() - pntsol2.Y();
  f[2] = F(3) = pntsol1.Z() - pntsol2.Z();
  return Standard_True;
}

void IntImp_ZerParFunc::ComputeParameters(
		      const IntImp_ConstIsoparametric  ChoixIso,
                      const TColStd_Array1OfReal& Param,  
                      math_Vector&  UVap,
		      math_Vector&  BornInf,
		      math_Vector&  BornSup,
		      math_Vector&  Tolerance ) {

  chxIso = ChoixIso;
  switch (chxIso) {
  case IntImp_UIsoparametricOnCaro1:
    {
      paramConst = Param(1);
      UVap(1) = Param(2);
      UVap(2) = Param(3);
      UVap(3) = Param(4);
      
      BornInf(1) = va0;
      BornSup(1) = va1;
      
      BornInf(2) = ub0;
      BornInf(3) = vb0;
      BornSup(2) = ub1;
      BornSup(3) = vb1;
      
      Tolerance(1)= vres1;
      Tolerance(2)= ures2;
      Tolerance(3)= vres2;
    }
    break;
  case IntImp_VIsoparametricOnCaro1:
    {
      paramConst = Param(2);
      UVap(1) = Param(1);
      UVap(2) = Param(3);
      UVap(3) = Param(4);
      BornInf(1) = ua0;
      BornSup(1) = ua1;
      
      BornInf(2) = ub0;
      BornSup(2) = ub1;
      BornInf(3) = vb0;
      BornSup(3) = vb1;

      Tolerance(1)= ures1;
      Tolerance(2)= ures2;
      Tolerance(3)= vres2;
    }
    break;
  case IntImp_UIsoparametricOnCaro2:
    {
      paramConst = Param(3); 
      UVap(1) = Param(1);
      UVap(2) = Param(2);
      UVap(3) = Param(4);
      
      BornInf(1) = ua0;
      BornSup(1) = ua1;
      BornInf(2) = va0;
      BornSup(2) = va1;
      
      BornInf(3) = vb0;
      BornSup(3) = vb1;

      Tolerance(1)= ures1;
      Tolerance(2)= vres1;
      Tolerance(3)= vres2;
    }
    break;
  case IntImp_VIsoparametricOnCaro2:
    {
      paramConst = Param(4); 
      UVap(1) = Param(1);
      UVap(2) = Param(2);
      UVap(3) = Param(3);
      
      BornInf(1) = ua0;
      BornSup(1) = ua1;
      BornInf(2) = va0;
      BornSup(2) = va1;

      BornInf(3) = ub0;
      BornSup(3) = ub1;

      Tolerance(1)= ures1;
      Tolerance(2)= vres1;
      Tolerance(3)= ures2;
    }
    break;
  }

  Standard_Real Incr1 = (BornSup(1)-BornInf(1))*0.01;
  Standard_Real Incr2 = (BornSup(2)-BornInf(2))*0.01;
  Standard_Real Incr3 = (BornSup(3)-BornInf(3))*0.01;
  BornInf(1) -= Incr1;
  BornSup(1) += Incr1;
  BornInf(2) -= Incr2;
  BornSup(2) += Incr2;
  BornInf(3) -= Incr3;
  BornSup(3) += Incr3;
} 


Standard_Boolean IntImp_ZerParFunc::IsTangent(
              const math_Vector& UVap,
              TColStd_Array1OfReal& Param,
              IntImp_ConstIsoparametric& BestChoix) 
{
  switch (chxIso) {
  case IntImp_UIsoparametricOnCaro1:
    {
      Param(1) = paramConst;
      Param(2) = UVap(1) ;
      Param(3) = UVap(2) ;
      Param(4) = UVap(3) ;
    }
    break;
  case IntImp_VIsoparametricOnCaro1:
    {
      Param(2) = paramConst;
      Param(1) = UVap(1) ;
      Param(3) = UVap(2) ;
      Param(4) = UVap(3) ;
    }
    break;
  case IntImp_UIsoparametricOnCaro2:
    {
      Param(3) = paramConst;
      Param(1) = UVap(1) ;
      Param(2) = UVap(2) ;
      Param(4) = UVap(3) ;
    }
    break;
  case IntImp_VIsoparametricOnCaro2:
    {
      Param(4) = paramConst;
      Param(1) = UVap(1) ;
      Param(2) = UVap(2) ;
      Param(3) = UVap(3) ;
    }
    break;
  }

  IntImp_ConstIsoparametric TabIso[4];
  Standard_Real EpsUV[4];
  EpsUV[0] = ures1;
  EpsUV[1] = vres1;
  
  EpsUV[2] = ures2;
  EpsUV[3] = vres2;


  tangent = IntImp_ComputeTangence(dpuv,EpsUV,tgduv,TabIso);
  if (!tangent) 
    chxIso = TabIso[0];
  BestChoix = chxIso;
  return tangent;
}
     

#undef SURF1
#undef SURF2