[occt.git] / src / ShapeUpgrade / ShapeUpgrade_SplitSurface.cxx

// File:	ShapeUpgrade_SplitSurface.cxx
// Created:	Mon Mar 16 19:18:49 1998
// Author:	Pierre BARRAS
//		<pbs@sgi84>
//    gka 30.04.99 S4137: extended for all types of surfaces

#include <ShapeUpgrade_SplitSurface.ixx>
#include <ShapeUpgrade.hxx>
#include <Geom_BSplineSurface.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <TColGeom_HArray2OfSurface.hxx>
#include <TColStd_HSequenceOfReal.hxx>
#include <Precision.hxx>
#include <Geom_SurfaceOfRevolution.hxx>
#include <Geom_SurfaceOfLinearExtrusion.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Geom_OffsetSurface.hxx>
#include <ShapeUpgrade_SplitCurve3d.hxx>
#include <TColGeom_HArray1OfCurve.hxx>
#include <gp_Ax1.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_Failure.hxx>
#include <ShapeExtend.hxx>
#include <Geom_BezierSurface.hxx>
#include <TColStd_Array1OfReal.hxx>

//=======================================================================
//function : ShapeUpgrade_SplitSurface
//purpose  : 
//=======================================================================

ShapeUpgrade_SplitSurface::ShapeUpgrade_SplitSurface() : myStatus(0)
{
}

//=======================================================================
//function : Init
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::Init(const Handle(Geom_Surface)& S)
{
  myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);

  myUSplitValues = new TColStd_HSequenceOfReal();
  myVSplitValues = new TColStd_HSequenceOfReal();
  mySurface = S;
  myResSurfaces = new ShapeExtend_CompositeSurface();
  myNbResultingRow =1;
  myNbResultingCol =1;
  Standard_Real U1,U2,V1,V2;
  mySurface->Bounds(U1,U2,V1,V2);

  myUSplitValues->Append(U1);
  myUSplitValues->Append(U2);

  myVSplitValues->Append(V1);
  myVSplitValues->Append(V2);
}

//=======================================================================
//function : Init
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::Init(const Handle(Geom_Surface)& S, const Standard_Real UFirst,const Standard_Real ULast,
				     const Standard_Real VFirst, const Standard_Real VLast)
{
  myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);
  
  mySurface = S;
  myResSurfaces  = new ShapeExtend_CompositeSurface();
  myUSplitValues = new TColStd_HSequenceOfReal();
  myVSplitValues = new TColStd_HSequenceOfReal();
  
  myNbResultingRow =1;
  myNbResultingCol =1;

  Standard_Real U1,U2,V1,V2;
  mySurface->Bounds(U1,U2,V1,V2);
  Standard_Real precision = Precision::PConfusion();
  if ( mySurface->IsUPeriodic() && 
       ULast - UFirst <= U2 - U1 + precision ) { U1 = UFirst; U2 = U1 + mySurface->UPeriod(); }
  if ( mySurface->IsVPeriodic() && 
       VLast - VFirst <= V2 - V1 + precision ) { V1 = VFirst; V2 = V1 + mySurface->VPeriod(); }
  Standard_Real UF,UL,VF,VL;
  if( UFirst > U2-precision || 
      ULast  < U1-precision ) {
    UF =U1; UL = U2;
  }
  else {
    UF = Max(U1,UFirst);
    UL = Min(U2,ULast);
  }
  if( VFirst > V2-precision || 
     VLast  < V1-precision ) {
    VF =V1; VL = V2;
  }
  else {
    VF = Max(V1,VFirst);
    VL = Min(V2,VLast);
  }
  
  if(UL-UF < precision) {
    Standard_Real p2 = precision/2.;
    UF-= p2;
    UL+= p2;
  }
  if(VL-VF < precision) {
    Standard_Real p2 = precision/2.;
    VF-= p2;
    VL+= p2;
  }
  
  myUSplitValues->Append(UF);
  myUSplitValues->Append(UL);
  myVSplitValues->Append(VF);
  myVSplitValues->Append(VL);
}

//=======================================================================
//function : SetSplitValues
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::SetUSplitValues(const Handle(TColStd_HSequenceOfReal)& UValues)
{
  if(UValues.IsNull()) return;
  Standard_Real precision = Precision::PConfusion();
  Standard_Real UFirst = myUSplitValues->Value(1),
  ULast = myUSplitValues->Value(myUSplitValues->Length()); 
  Standard_Integer i =1;
  Standard_Integer len = UValues->Length(); 
  
  for(Standard_Integer ku =2; ku <= myUSplitValues->Length();ku++) {
    ULast = myUSplitValues->Value(ku);
    for(; i <= len; i++) {
      if( (UFirst + precision) >= UValues->Value(i)) continue;
      if((ULast - precision) <= UValues->Value(i)) break;
      myUSplitValues->InsertBefore(ku++,UValues->Value(i));
    }
    UFirst = ULast;
  }
}

//=======================================================================
//function : SetSplitVValues
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::SetVSplitValues(const Handle(TColStd_HSequenceOfReal)& VValues) 
{
  if(VValues.IsNull()) return;
  Standard_Real precision = Precision::PConfusion();
  Standard_Real VFirst = myVSplitValues->Value(1), 
  VLast = myVSplitValues->Value(myVSplitValues->Length()); 
  Standard_Integer i =1;
  Standard_Integer len = VValues->Length();
  for(Standard_Integer kv =2; kv <= myVSplitValues->Length();kv++) {
    VLast = myVSplitValues->Value(kv);
    for(; i <= len;  i++) {
      if( (VFirst + precision) >= VValues->Value(i)) continue;
      if((VLast - precision) <= VValues->Value(i)) break;
      myVSplitValues->InsertBefore(kv++,VValues->Value(i));
    }
    VFirst = VLast;
  }
}

//=======================================================================
//function : Build
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::Build(const Standard_Boolean Segment) 
{
  
  Standard_Real UFirst = myUSplitValues->Value(1);
  Standard_Real ULast = myUSplitValues->Value(myUSplitValues->Length());
  Standard_Real VFirst =  myVSplitValues->Value(1);
  Standard_Real VLast =   myVSplitValues->Value(myVSplitValues->Length());
  
  if(myUSplitValues->Length() > 2 || myVSplitValues->Length() > 2)
    myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
  
  Standard_Real U1,U2,V1,V2;
  mySurface->Bounds(U1, U2, V1, V2);
  if (mySurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution))) {      
    Handle(Geom_SurfaceOfRevolution) Surface = Handle(Geom_SurfaceOfRevolution)::DownCast(mySurface);
    Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
    ShapeUpgrade_SplitCurve3d spc;
    spc.Init(BasCurve,VFirst,VLast);
    spc.SetSplitValues(myVSplitValues);
    spc.Build(Segment);
    Handle(TColGeom_HArray2OfSurface) Surfaces;
    myNbResultingCol = spc.GetCurves()->Length();
    if(myUSplitValues->Length()> 2) {
      myNbResultingRow =  myUSplitValues->Length() -1;
      Surfaces = new TColGeom_HArray2OfSurface(1, myNbResultingRow,1,myNbResultingCol);
      for(Standard_Integer nc =1; nc <= myNbResultingCol; nc++) {
	Handle(Geom_SurfaceOfRevolution) NewSurfaceRev = 
	  new Geom_SurfaceOfRevolution(spc.GetCurves()->Value(nc),Surface->Axis()); 
	Standard_Real U1p,U2p,V1p,V2p;
	NewSurfaceRev->Bounds(U1p,U2p,V1p,V2p);
	for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) { 
	  Handle(Geom_RectangularTrimmedSurface) NewSurf = 
	    new Geom_RectangularTrimmedSurface ( NewSurfaceRev, myUSplitValues->Value(nc1),
						 myUSplitValues->Value(nc1+1), V1p, V2p );
	  Surfaces->SetValue(nc1,nc,NewSurf);
	}
      }
    }
    else {
      Surfaces = new TColGeom_HArray2OfSurface(1,1,1,myNbResultingCol);
      
      for(Standard_Integer nc =1; nc <= spc.GetCurves()->Length(); nc++) {
	Handle(Geom_SurfaceOfRevolution) NewSurfaceRev = 
	  new Geom_SurfaceOfRevolution ( spc.GetCurves()->Value(nc), Surface->Axis() ); 
	NewSurfaceRev->Bounds(U1, U2, V1, V2);
	if( UFirst == U1 && ULast == U2)
	  Surfaces ->SetValue(1,nc,NewSurfaceRev);
	else {
	  Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
	    (NewSurfaceRev,UFirst,ULast,V1,V2); //pdn correction for main seq
	  Surfaces ->SetValue(1,nc,NewSurf);
	}
      }
    }
    myResSurfaces->Init(Surfaces);
    myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
    myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
    if ( spc.Status ( ShapeExtend_DONE1 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
    if ( spc.Status ( ShapeExtend_DONE2 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE2 );
    if ( spc.Status ( ShapeExtend_DONE3 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
    return;
  }
  
  if (mySurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfLinearExtrusion))) {
    Handle(Geom_SurfaceOfLinearExtrusion) Surface = Handle(Geom_SurfaceOfLinearExtrusion)::DownCast(mySurface);
    Handle(Geom_Curve) BasCurve = Surface->BasisCurve(); 
    ShapeUpgrade_SplitCurve3d spc;
    spc.Init(BasCurve,UFirst,ULast);
    spc.SetSplitValues(myUSplitValues);
    spc.Build(Segment); 
    myNbResultingRow = spc.GetCurves()->Length();
    Handle(TColGeom_HArray2OfSurface) Surfaces;
    if(myVSplitValues->Length() > 2) {
      myNbResultingCol = myVSplitValues->Length() - 1;
      Surfaces = new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,myNbResultingCol);
      for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) {
	Handle(Geom_SurfaceOfLinearExtrusion) NewSurfaceEx = new Geom_SurfaceOfLinearExtrusion(spc.GetCurves()->Value(nc1),
											       Surface->Direction()); 
	Standard_Real U1p,U2p,V1p,V2p;
	NewSurfaceEx->Bounds(U1p,U2p,V1p,V2p);
	for(Standard_Integer nc2 =1; nc2 <= myNbResultingCol; nc2++) {
	  Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
	    (NewSurfaceEx,U1p,U2p,myVSplitValues->Value(nc2),myVSplitValues->Value(nc2+1));
	  Surfaces ->SetValue(nc1,nc2,NewSurf);
	} 
      }
    }
    else {
      Surfaces = new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,1);
      
      for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) {
	Handle(Geom_SurfaceOfLinearExtrusion) NewSurfaceEx = new Geom_SurfaceOfLinearExtrusion(spc.GetCurves()->Value(nc1),Surface->Direction()); 
	NewSurfaceEx->Bounds(U1,U2,V1,V2);
	if(VFirst == V1 && VLast == V2)
	  Surfaces -> SetValue(nc1,1,NewSurfaceEx);
	else {
	  Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
	    (NewSurfaceEx,Max(U1,UFirst),Min(ULast,U2),Max(VFirst,V1),Min(VLast,V2));
	  Surfaces ->SetValue(nc1,1,NewSurf);
	}
      } 
    }
    myResSurfaces->Init(Surfaces);
    myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
    myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
    if ( spc.Status ( ShapeExtend_DONE1 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
    if ( spc.Status ( ShapeExtend_DONE2 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE2 );
    if ( spc.Status ( ShapeExtend_DONE3 ) )
      myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
    return;
  }
  
  if (mySurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
    Handle(Geom_RectangularTrimmedSurface) tmp = Handle(Geom_RectangularTrimmedSurface)::DownCast (mySurface);
    Handle(Geom_Surface) theSurf = tmp->BasisSurface();
    ShapeUpgrade_SplitSurface sps;
    sps.Init(theSurf,UFirst,ULast,VFirst,VLast);
    sps.SetUSplitValues(myUSplitValues);
    sps.SetVSplitValues(myVSplitValues);
    sps.myStatus = myStatus;
    sps.Build(Segment);
    myStatus |= sps.myStatus;
    myResSurfaces = sps.myResSurfaces;
    return;
  }
  else if (mySurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
    Handle(Geom_OffsetSurface) tmp = Handle(Geom_OffsetSurface)::DownCast (mySurface);
    Handle(Geom_Surface) theSurf = tmp->BasisSurface();
    ShapeUpgrade_SplitSurface sps;
    sps.Init(theSurf,UFirst,ULast,VFirst,VLast);
    sps.SetUSplitValues(myUSplitValues);
    sps.SetVSplitValues(myVSplitValues);
    sps.myStatus = myStatus;
    sps.Build(Segment);
    Handle(TColGeom_HArray2OfSurface) Patches = new TColGeom_HArray2OfSurface
      (1,sps.ResSurfaces()->NbUPatches(),1,sps.ResSurfaces()->NbVPatches());
    for(Standard_Integer i1 = 1; i1 <= sps.ResSurfaces()->NbUPatches(); i1++) {
      for(Standard_Integer j1 = 1 ; j1 <= sps.ResSurfaces()->NbVPatches(); j1++) {
	Handle(Geom_OffsetSurface) NewOffSur = new Geom_OffsetSurface(sps.ResSurfaces()->Patch(i1,j1),tmp->Offset());
 	Patches->SetValue(i1,j1,NewOffSur);
      }
    }
    myResSurfaces->Init(Patches);
    myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
    myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
    myStatus |= sps.myStatus;
    return;
  }
  
  // splitting the surfaces:
  myNbResultingRow = myUSplitValues->Length() -1;
  myNbResultingCol = myVSplitValues->Length() -1;
  Handle(TColGeom_HArray2OfSurface) Surfaces =new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,myNbResultingCol);
  Standard_Boolean isBSpline = mySurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface));
  Standard_Boolean isBezier  = mySurface->IsKind(STANDARD_TYPE(Geom_BezierSurface));
  
 // Standard_Real U1,U2,V1,V2;
 // U1=UFirst;
 // U2 = ULast;
 // V1 = VFirst;
 // V2 = VLast;

  if(myNbResultingRow == 1 && myNbResultingCol == 1) {
    mySurface->Bounds(U1, U2, V1, V2);
    Standard_Boolean filled = Standard_True;
    if ( Abs ( U1 - UFirst ) < Precision::PConfusion() && 
	 Abs ( U2 - ULast  ) < Precision::PConfusion() &&
         Abs ( V1 - VFirst ) < Precision::PConfusion() && 
	 Abs ( V2 - VLast  ) < Precision::PConfusion() )
      Surfaces->SetValue(1,1,mySurface);
    else if ( ! Segment || ! mySurface->IsKind (STANDARD_TYPE (Geom_BSplineSurface) ) ||
	      ! Status ( ShapeExtend_DONE2 ) ) {
      //pdn copying of surface
      Handle(Geom_Surface) tmp = Handle(Geom_Surface)::DownCast(mySurface->Copy());
      Handle(Geom_RectangularTrimmedSurface) Surf= 
	new Geom_RectangularTrimmedSurface(tmp,UFirst,ULast,VFirst,VLast);
      Surfaces->SetValue(1,1,Surf);  
    }
    else filled = Standard_False;
    if ( filled ) {
      myResSurfaces->Init(Surfaces);
      myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
      myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
      return;
    }
  }
  if (mySurface->IsKind (STANDARD_TYPE (Geom_BSplineSurface))) {
    Handle(Geom_BSplineSurface) BsSurface = Handle(Geom_BSplineSurface)::DownCast(mySurface->Copy());
    Standard_Integer FirstInd =BsSurface->FirstUKnotIndex(), 
    LastInd = BsSurface->LastUKnotIndex();
    Standard_Integer j =  FirstInd;
    for(Standard_Integer ii =1 ; ii <= myUSplitValues->Length(); ii++) {
      Standard_Real spval = myUSplitValues->Value(ii);
      for(; j <=LastInd;j++) {
	if( spval > BsSurface->UKnot(j) + Precision::PConfusion()) continue;
	if( spval < BsSurface->UKnot(j) - Precision::PConfusion()) break;
	 myUSplitValues->ChangeValue(ii) = BsSurface->UKnot(j);
       }
       if(j == LastInd) break;
     }
     FirstInd =BsSurface->FirstVKnotIndex(), 
     LastInd = BsSurface->LastVKnotIndex(); 
     j = FirstInd;
     for(Standard_Integer ii1 =1 ; ii1 <= myVSplitValues->Length(); ii1++) {
       Standard_Real spval = myVSplitValues->Value(ii1);
       for(; j <=LastInd;j++) {
	 if( spval > BsSurface->VKnot(j) + Precision::PConfusion()) continue;
	if( spval < BsSurface->VKnot(j) - Precision::PConfusion()) break;
	myVSplitValues->ChangeValue(ii1) =BsSurface->VKnot(j);
      }
      if(j == LastInd) break;
    }
  }
  U1 = myUSplitValues->Value(1);
  V1 = myVSplitValues->Value(1);
  for(Standard_Integer  irow = 2; irow <= myUSplitValues->Length(); irow++) {
    U2 = myUSplitValues->Value(irow);
    for(Standard_Integer  icol = 2; icol <= myVSplitValues->Length(); icol++) {
      V2 = myVSplitValues->Value(icol);
//      if (ShapeUpgrade::Debug())  {
//	cout<<".. bounds    ="<<U1    <<","<<U2   <<","<<V1    <<","<<V2   <<endl;
//	cout<<".. -> pos ="<<irow  <<","<<icol<<endl;
//      }
      // creates a copy of theSurf before to segment:
      Handle(Geom_Surface) theNew = Handle(Geom_Surface)::DownCast ( mySurface->Copy() );
      if ( isBSpline || isBezier ) {
	try {
	  OCC_CATCH_SIGNALS
	  if ( isBSpline ) 
	    Handle(Geom_BSplineSurface)::DownCast(theNew)->Segment(U1,U2,V1,V2);
	  else if ( isBezier ) {
	    //pdn K4L+ (work around)
	    // Standard_Real u1 = 2*U1 - 1;
	    // Standard_Real u2 = 2*U2 - 1;
	    // Standard_Real v1 = 2*V1 - 1;
	    // Standard_Real v2 = 2*V2 - 1; 
	    //rln C30 (direct use)
	    Standard_Real u1 = U1;
	    Standard_Real u2 = U2;
	    Standard_Real v1 = V1;
	    Standard_Real v2 = V2;
	    Handle(Geom_BezierSurface)::DownCast(theNew)->Segment(u1,u2,v1,v2);
	  }
	  myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
	}
	catch (Standard_Failure) {
#ifdef DEB 
	  cout << "Warning: ShapeUpgrade_SplitSurface::Build(): Exception in Segment      :";
	  Standard_Failure::Caught()->Print(cout); cout << endl;
#endif
	  Handle(Geom_Surface) theNewSurf = theNew;
	  theNew = new Geom_RectangularTrimmedSurface(theNewSurf,U1,U2,V1,V2);
	}
	Surfaces->SetValue((irow-1),(icol-1),theNew);
      }
      else {
	// not a BSpline: trimming instead of segmentation
	Handle(Geom_Surface) 
	  theNewSurf = Handle(Geom_Surface)::DownCast(theNew);
	Handle(Geom_RectangularTrimmedSurface) SplittedSurf= 
	  new Geom_RectangularTrimmedSurface(theNewSurf,U1,U2,V1,V2);
	Surfaces->SetValue((irow-1),(icol-1),SplittedSurf);
      }
      
      V1=V2;
    }
    U1=U2; 
    V1 = myVSplitValues->Value(1);
  }
  Standard_Integer nbU =  myUSplitValues->Length();
  TColStd_Array1OfReal UJoints(1,nbU);
  Standard_Integer i;//svv Jan 10 2000 : porting on DEC
  for(i = 1; i <= nbU; i++)
    UJoints(i) = myUSplitValues->Value(i);
  
  Standard_Integer nbV=  myVSplitValues->Length();
  TColStd_Array1OfReal VJoints(1,nbV);
  for(i = 1; i <= nbV; i++)
    VJoints(i) = myVSplitValues->Value(i);
  myResSurfaces->Init(Surfaces,UJoints,VJoints);
//  if (ShapeUpgrade::Debug()) cout<<"SplitSurface::Build - end"<<endl;
}


//=======================================================================
//function : GlobalUKnots
//purpose  : 
//=======================================================================

const Handle(TColStd_HSequenceOfReal)& ShapeUpgrade_SplitSurface::USplitValues() const
{
  return myUSplitValues;
}
//=======================================================================
//function : GlobalVKnots
//purpose  : 
//=======================================================================

const Handle(TColStd_HSequenceOfReal)& ShapeUpgrade_SplitSurface::VSplitValues() const
{
  return myVSplitValues;
}
//=======================================================================
//function : Perform
//purpose  : 
//=======================================================================

void ShapeUpgrade_SplitSurface::Perform(const Standard_Boolean Segment) 
{
  Compute(Segment);
//  SetUSplitValues(myUSplitValues);
//  SetVSplitValues(myVSplitValues);
  Build (Segment);
  
}
//=======================================================================
//function : Compute
//purpose  : 
//=======================================================================
 
void ShapeUpgrade_SplitSurface::Compute(const Standard_Boolean /*Segment*/)
{
  myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK); 
}
//=======================================================================
//function : Status
//purpose  : 
//=======================================================================

Standard_Boolean ShapeUpgrade_SplitSurface::Status(const ShapeExtend_Status status) const
{
  return ShapeExtend::DecodeStatus (myStatus, status);
}

const Handle(ShapeExtend_CompositeSurface)& ShapeUpgrade_SplitSurface::ResSurfaces() const
{
  return myResSurfaces;
}
Commit	Line	Data
7fd59977	1	// File: ShapeUpgrade_SplitSurface.cxx
	2	// Created: Mon Mar 16 19:18:49 1998
	3	// Author: Pierre BARRAS
	4	// <pbs@sgi84>
	5	// gka 30.04.99 S4137: extended for all types of surfaces
	6
	7	#include <ShapeUpgrade_SplitSurface.ixx>
	8	#include <ShapeUpgrade.hxx>
	9	#include <Geom_BSplineSurface.hxx>
	10	#include <Geom_RectangularTrimmedSurface.hxx>
	11	#include <TColGeom_HArray2OfSurface.hxx>
	12	#include <TColStd_HSequenceOfReal.hxx>
	13	#include <Precision.hxx>
	14	#include <Geom_SurfaceOfRevolution.hxx>
	15	#include <Geom_SurfaceOfLinearExtrusion.hxx>
	16	#include <Geom_RectangularTrimmedSurface.hxx>
	17	#include <Geom_OffsetSurface.hxx>
	18	#include <ShapeUpgrade_SplitCurve3d.hxx>
	19	#include <TColGeom_HArray1OfCurve.hxx>
	20	#include <gp_Ax1.hxx>
	21	#include <Standard_ErrorHandler.hxx>
	22	#include <Standard_Failure.hxx>
	23	#include <ShapeExtend.hxx>
	24	#include <Geom_BezierSurface.hxx>
	25	#include <TColStd_Array1OfReal.hxx>
	26
	27	//=======================================================================
	28	//function : ShapeUpgrade_SplitSurface
	29	//purpose :
	30	//=======================================================================
	31
	32	ShapeUpgrade_SplitSurface::ShapeUpgrade_SplitSurface() : myStatus(0)
	33	{
	34	}
	35
	36	//=======================================================================
	37	//function : Init
	38	//purpose :
	39	//=======================================================================
	40
	41	void ShapeUpgrade_SplitSurface::Init(const Handle(Geom_Surface)& S)
	42	{
	43	myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);
	44
	45	myUSplitValues = new TColStd_HSequenceOfReal();
	46	myVSplitValues = new TColStd_HSequenceOfReal();
	47	mySurface = S;
	48	myResSurfaces = new ShapeExtend_CompositeSurface();
	49	myNbResultingRow =1;
	50	myNbResultingCol =1;
	51	Standard_Real U1,U2,V1,V2;
	52	mySurface->Bounds(U1,U2,V1,V2);
	53
	54	myUSplitValues->Append(U1);
	55	myUSplitValues->Append(U2);
	56
	57	myVSplitValues->Append(V1);
	58	myVSplitValues->Append(V2);
	59	}
	60
	61	//=======================================================================
	62	//function : Init
	63	//purpose :
	64	//=======================================================================
65
66	void ShapeUpgrade_SplitSurface::Init(const Handle(Geom_Surface)& S, const Standard_Real UFirst,const Standard_Real ULast,
67	const Standard_Real VFirst, const Standard_Real VLast)
68	{
69	myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);
70
71	mySurface = S;
72	myResSurfaces = new ShapeExtend_CompositeSurface();
73	myUSplitValues = new TColStd_HSequenceOfReal();
74	myVSplitValues = new TColStd_HSequenceOfReal();
75
76	myNbResultingRow =1;
77	myNbResultingCol =1;
78
79	Standard_Real U1,U2,V1,V2;
80	mySurface->Bounds(U1,U2,V1,V2);
81	Standard_Real precision = Precision::PConfusion();
82	if ( mySurface->IsUPeriodic() &&
83	ULast - UFirst <= U2 - U1 + precision ) { U1 = UFirst; U2 = U1 + mySurface->UPeriod(); }
84	if ( mySurface->IsVPeriodic() &&
85	VLast - VFirst <= V2 - V1 + precision ) { V1 = VFirst; V2 = V1 + mySurface->VPeriod(); }
86	Standard_Real UF,UL,VF,VL;
87	if( UFirst > U2-precision \|\|
88	ULast < U1-precision ) {
89	UF =U1; UL = U2;
90	}
91	else {
92	UF = Max(U1,UFirst);
93	UL = Min(U2,ULast);
94	}
95	if( VFirst > V2-precision \|\|
96	VLast < V1-precision ) {
97	VF =V1; VL = V2;
98	}
99	else {
100	VF = Max(V1,VFirst);
101	VL = Min(V2,VLast);
102	}
103
104	if(UL-UF < precision) {
105	Standard_Real p2 = precision/2.;
106	UF-= p2;
107	UL+= p2;
108	}
109	if(VL-VF < precision) {
110	Standard_Real p2 = precision/2.;
111	VF-= p2;
112	VL+= p2;
113	}
114
115	myUSplitValues->Append(UF);
116	myUSplitValues->Append(UL);
117	myVSplitValues->Append(VF);
118	myVSplitValues->Append(VL);
119	}
120
121	//=======================================================================
122	//function : SetSplitValues
123	//purpose :
124	//=======================================================================
125
126	void ShapeUpgrade_SplitSurface::SetUSplitValues(const Handle(TColStd_HSequenceOfReal)& UValues)
127	{
128	if(UValues.IsNull()) return;
129	Standard_Real precision = Precision::PConfusion();
130	Standard_Real UFirst = myUSplitValues->Value(1),
131	ULast = myUSplitValues->Value(myUSplitValues->Length());
132	Standard_Integer i =1;
133	Standard_Integer len = UValues->Length();
134
135	for(Standard_Integer ku =2; ku <= myUSplitValues->Length();ku++) {
136	ULast = myUSplitValues->Value(ku);
137	for(; i <= len; i++) {
138	if( (UFirst + precision) >= UValues->Value(i)) continue;
139	if((ULast - precision) <= UValues->Value(i)) break;
140	myUSplitValues->InsertBefore(ku++,UValues->Value(i));
141	}
142	UFirst = ULast;
143	}
144	}
145
146	//=======================================================================
147	//function : SetSplitVValues
148	//purpose :
149	//=======================================================================
150
151	void ShapeUpgrade_SplitSurface::SetVSplitValues(const Handle(TColStd_HSequenceOfReal)& VValues)
152	{
153	if(VValues.IsNull()) return;
154	Standard_Real precision = Precision::PConfusion();
155	Standard_Real VFirst = myVSplitValues->Value(1),
156	VLast = myVSplitValues->Value(myVSplitValues->Length());
157	Standard_Integer i =1;
158	Standard_Integer len = VValues->Length();
159	for(Standard_Integer kv =2; kv <= myVSplitValues->Length();kv++) {
160	VLast = myVSplitValues->Value(kv);
161	for(; i <= len; i++) {
162	if( (VFirst + precision) >= VValues->Value(i)) continue;
163	if((VLast - precision) <= VValues->Value(i)) break;
164	myVSplitValues->InsertBefore(kv++,VValues->Value(i));
165	}
166	VFirst = VLast;
167	}
168	}
169
170	//=======================================================================
171	//function : Build
172	//purpose :
173	//=======================================================================
174
175	void ShapeUpgrade_SplitSurface::Build(const Standard_Boolean Segment)
176	{
177
178	Standard_Real UFirst = myUSplitValues->Value(1);
179	Standard_Real ULast = myUSplitValues->Value(myUSplitValues->Length());
180	Standard_Real VFirst = myVSplitValues->Value(1);
181	Standard_Real VLast = myVSplitValues->Value(myVSplitValues->Length());
182
183	if(myUSplitValues->Length() > 2 \|\| myVSplitValues->Length() > 2)
184	myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
185
186	Standard_Real U1,U2,V1,V2;
187	mySurface->Bounds(U1, U2, V1, V2);
188	if (mySurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution))) {
189	Handle(Geom_SurfaceOfRevolution) Surface = Handle(Geom_SurfaceOfRevolution)::DownCast(mySurface);
190	Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
191	ShapeUpgrade_SplitCurve3d spc;
192	spc.Init(BasCurve,VFirst,VLast);
193	spc.SetSplitValues(myVSplitValues);
194	spc.Build(Segment);
195	Handle(TColGeom_HArray2OfSurface) Surfaces;
196	myNbResultingCol = spc.GetCurves()->Length();
197	if(myUSplitValues->Length()> 2) {
198	myNbResultingRow = myUSplitValues->Length() -1;
199	Surfaces = new TColGeom_HArray2OfSurface(1, myNbResultingRow,1,myNbResultingCol);
200	for(Standard_Integer nc =1; nc <= myNbResultingCol; nc++) {
201	Handle(Geom_SurfaceOfRevolution) NewSurfaceRev =
202	new Geom_SurfaceOfRevolution(spc.GetCurves()->Value(nc),Surface->Axis());
203	Standard_Real U1p,U2p,V1p,V2p;
204	NewSurfaceRev->Bounds(U1p,U2p,V1p,V2p);
205	for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) {
206	Handle(Geom_RectangularTrimmedSurface) NewSurf =
207	new Geom_RectangularTrimmedSurface ( NewSurfaceRev, myUSplitValues->Value(nc1),
208	myUSplitValues->Value(nc1+1), V1p, V2p );
209	Surfaces->SetValue(nc1,nc,NewSurf);
210	}
211	}
212	}
213	else {
214	Surfaces = new TColGeom_HArray2OfSurface(1,1,1,myNbResultingCol);
215
216	for(Standard_Integer nc =1; nc <= spc.GetCurves()->Length(); nc++) {
217	Handle(Geom_SurfaceOfRevolution) NewSurfaceRev =
218	new Geom_SurfaceOfRevolution ( spc.GetCurves()->Value(nc), Surface->Axis() );
219	NewSurfaceRev->Bounds(U1, U2, V1, V2);
220	if( UFirst == U1 && ULast == U2)
221	Surfaces ->SetValue(1,nc,NewSurfaceRev);
222	else {
223	Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
224	(NewSurfaceRev,UFirst,ULast,V1,V2); //pdn correction for main seq
225	Surfaces ->SetValue(1,nc,NewSurf);
226	}
227	}
228	}
229	myResSurfaces->Init(Surfaces);
230	myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
231	myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
232	if ( spc.Status ( ShapeExtend_DONE1 ) )
233	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
234	if ( spc.Status ( ShapeExtend_DONE2 ) )
235	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE2 );
236	if ( spc.Status ( ShapeExtend_DONE3 ) )
237	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
238	return;
239	}
240
241	if (mySurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfLinearExtrusion))) {
242	Handle(Geom_SurfaceOfLinearExtrusion) Surface = Handle(Geom_SurfaceOfLinearExtrusion)::DownCast(mySurface);
243	Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
244	ShapeUpgrade_SplitCurve3d spc;
245	spc.Init(BasCurve,UFirst,ULast);
246	spc.SetSplitValues(myUSplitValues);
247	spc.Build(Segment);
248	myNbResultingRow = spc.GetCurves()->Length();
249	Handle(TColGeom_HArray2OfSurface) Surfaces;
250	if(myVSplitValues->Length() > 2) {
251	myNbResultingCol = myVSplitValues->Length() - 1;
252	Surfaces = new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,myNbResultingCol);
253	for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) {
254	Handle(Geom_SurfaceOfLinearExtrusion) NewSurfaceEx = new Geom_SurfaceOfLinearExtrusion(spc.GetCurves()->Value(nc1),
255	Surface->Direction());
256	Standard_Real U1p,U2p,V1p,V2p;
257	NewSurfaceEx->Bounds(U1p,U2p,V1p,V2p);
258	for(Standard_Integer nc2 =1; nc2 <= myNbResultingCol; nc2++) {
259	Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
260	(NewSurfaceEx,U1p,U2p,myVSplitValues->Value(nc2),myVSplitValues->Value(nc2+1));
261	Surfaces ->SetValue(nc1,nc2,NewSurf);
262	}
263	}
264	}
265	else {
266	Surfaces = new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,1);
267
268	for(Standard_Integer nc1 =1; nc1 <= myNbResultingRow; nc1++) {
269	Handle(Geom_SurfaceOfLinearExtrusion) NewSurfaceEx = new Geom_SurfaceOfLinearExtrusion(spc.GetCurves()->Value(nc1),Surface->Direction());
270	NewSurfaceEx->Bounds(U1,U2,V1,V2);
271	if(VFirst == V1 && VLast == V2)
272	Surfaces -> SetValue(nc1,1,NewSurfaceEx);
273	else {
274	Handle(Geom_RectangularTrimmedSurface) NewSurf = new Geom_RectangularTrimmedSurface
275	(NewSurfaceEx,Max(U1,UFirst),Min(ULast,U2),Max(VFirst,V1),Min(VLast,V2));
276	Surfaces ->SetValue(nc1,1,NewSurf);
277	}
278	}
279	}
280	myResSurfaces->Init(Surfaces);
281	myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
282	myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
283	if ( spc.Status ( ShapeExtend_DONE1 ) )
284	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE1 );
285	if ( spc.Status ( ShapeExtend_DONE2 ) )
286	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE2 );
287	if ( spc.Status ( ShapeExtend_DONE3 ) )
288	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
289	return;
290	}
291
292	if (mySurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
293	Handle(Geom_RectangularTrimmedSurface) tmp = Handle(Geom_RectangularTrimmedSurface)::DownCast (mySurface);
294	Handle(Geom_Surface) theSurf = tmp->BasisSurface();
295	ShapeUpgrade_SplitSurface sps;
296	sps.Init(theSurf,UFirst,ULast,VFirst,VLast);
297	sps.SetUSplitValues(myUSplitValues);
298	sps.SetVSplitValues(myVSplitValues);
299	sps.myStatus = myStatus;
300	sps.Build(Segment);
301	myStatus \|= sps.myStatus;
302	myResSurfaces = sps.myResSurfaces;
303	return;
304	}
305	else if (mySurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
306	Handle(Geom_OffsetSurface) tmp = Handle(Geom_OffsetSurface)::DownCast (mySurface);
307	Handle(Geom_Surface) theSurf = tmp->BasisSurface();
308	ShapeUpgrade_SplitSurface sps;
309	sps.Init(theSurf,UFirst,ULast,VFirst,VLast);
310	sps.SetUSplitValues(myUSplitValues);
311	sps.SetVSplitValues(myVSplitValues);
312	sps.myStatus = myStatus;
313	sps.Build(Segment);
314	Handle(TColGeom_HArray2OfSurface) Patches = new TColGeom_HArray2OfSurface
315	(1,sps.ResSurfaces()->NbUPatches(),1,sps.ResSurfaces()->NbVPatches());
316	for(Standard_Integer i1 = 1; i1 <= sps.ResSurfaces()->NbUPatches(); i1++) {
317	for(Standard_Integer j1 = 1 ; j1 <= sps.ResSurfaces()->NbVPatches(); j1++) {
318	Handle(Geom_OffsetSurface) NewOffSur = new Geom_OffsetSurface(sps.ResSurfaces()->Patch(i1,j1),tmp->Offset());
319	Patches->SetValue(i1,j1,NewOffSur);
320	}
321	}
322	myResSurfaces->Init(Patches);
323	myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
324	myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
325	myStatus \|= sps.myStatus;
326	return;
327	}
328
329	// splitting the surfaces:
330	myNbResultingRow = myUSplitValues->Length() -1;
331	myNbResultingCol = myVSplitValues->Length() -1;
332	Handle(TColGeom_HArray2OfSurface) Surfaces =new TColGeom_HArray2OfSurface(1,myNbResultingRow,1,myNbResultingCol);
333	Standard_Boolean isBSpline = mySurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface));
334	Standard_Boolean isBezier = mySurface->IsKind(STANDARD_TYPE(Geom_BezierSurface));
335
336	// Standard_Real U1,U2,V1,V2;
337	// U1=UFirst;
338	// U2 = ULast;
339	// V1 = VFirst;
340	// V2 = VLast;
341
342	if(myNbResultingRow == 1 && myNbResultingCol == 1) {
343	mySurface->Bounds(U1, U2, V1, V2);
344	Standard_Boolean filled = Standard_True;
345	if ( Abs ( U1 - UFirst ) < Precision::PConfusion() &&
346	Abs ( U2 - ULast ) < Precision::PConfusion() &&
347	Abs ( V1 - VFirst ) < Precision::PConfusion() &&
348	Abs ( V2 - VLast ) < Precision::PConfusion() )
349	Surfaces->SetValue(1,1,mySurface);
350	else if ( ! Segment \|\| ! mySurface->IsKind (STANDARD_TYPE (Geom_BSplineSurface) ) \|\|
351	! Status ( ShapeExtend_DONE2 ) ) {
352	//pdn copying of surface
353	Handle(Geom_Surface) tmp = Handle(Geom_Surface)::DownCast(mySurface->Copy());
354	Handle(Geom_RectangularTrimmedSurface) Surf=
355	new Geom_RectangularTrimmedSurface(tmp,UFirst,ULast,VFirst,VLast);
356	Surfaces->SetValue(1,1,Surf);
357	}
358	else filled = Standard_False;
359	if ( filled ) {
360	myResSurfaces->Init(Surfaces);
361	myResSurfaces->SetUFirstValue ( myUSplitValues->Sequence().First() );
362	myResSurfaces->SetVFirstValue ( myVSplitValues->Sequence().First() );
363	return;
364	}
365	}
366	if (mySurface->IsKind (STANDARD_TYPE (Geom_BSplineSurface))) {
367	Handle(Geom_BSplineSurface) BsSurface = Handle(Geom_BSplineSurface)::DownCast(mySurface->Copy());
368	Standard_Integer FirstInd =BsSurface->FirstUKnotIndex(),
369	LastInd = BsSurface->LastUKnotIndex();
370	Standard_Integer j = FirstInd;
371	for(Standard_Integer ii =1 ; ii <= myUSplitValues->Length(); ii++) {
372	Standard_Real spval = myUSplitValues->Value(ii);
373	for(; j <=LastInd;j++) {
374	if( spval > BsSurface->UKnot(j) + Precision::PConfusion()) continue;
375	if( spval < BsSurface->UKnot(j) - Precision::PConfusion()) break;
376	myUSplitValues->ChangeValue(ii) = BsSurface->UKnot(j);
377	}
378	if(j == LastInd) break;
379	}
380	FirstInd =BsSurface->FirstVKnotIndex(),
381	LastInd = BsSurface->LastVKnotIndex();
382	j = FirstInd;
383	for(Standard_Integer ii1 =1 ; ii1 <= myVSplitValues->Length(); ii1++) {
384	Standard_Real spval = myVSplitValues->Value(ii1);
385	for(; j <=LastInd;j++) {
386	if( spval > BsSurface->VKnot(j) + Precision::PConfusion()) continue;
387	if( spval < BsSurface->VKnot(j) - Precision::PConfusion()) break;
388	myVSplitValues->ChangeValue(ii1) =BsSurface->VKnot(j);
389	}
390	if(j == LastInd) break;
391	}
392	}
393	U1 = myUSplitValues->Value(1);
394	V1 = myVSplitValues->Value(1);
395	for(Standard_Integer irow = 2; irow <= myUSplitValues->Length(); irow++) {
396	U2 = myUSplitValues->Value(irow);
397	for(Standard_Integer icol = 2; icol <= myVSplitValues->Length(); icol++) {
398	V2 = myVSplitValues->Value(icol);
399	// if (ShapeUpgrade::Debug()) {
400	// cout<<".. bounds ="<<U1 <<","<<U2 <<","<<V1 <<","<<V2 <<endl;
401	// cout<<".. -> pos ="<<irow <<","<<icol<<endl;
402	// }
403	// creates a copy of theSurf before to segment:
404	Handle(Geom_Surface) theNew = Handle(Geom_Surface)::DownCast ( mySurface->Copy() );
405	if ( isBSpline \|\| isBezier ) {
406	try {
407	OCC_CATCH_SIGNALS
408	if ( isBSpline )
409	Handle(Geom_BSplineSurface)::DownCast(theNew)->Segment(U1,U2,V1,V2);
410	else if ( isBezier ) {
411	//pdn K4L+ (work around)
412	// Standard_Real u1 = 2*U1 - 1;
413	// Standard_Real u2 = 2*U2 - 1;
414	// Standard_Real v1 = 2*V1 - 1;
415	// Standard_Real v2 = 2*V2 - 1;
416	//rln C30 (direct use)
417	Standard_Real u1 = U1;
418	Standard_Real u2 = U2;
419	Standard_Real v1 = V1;
420	Standard_Real v2 = V2;
421	Handle(Geom_BezierSurface)::DownCast(theNew)->Segment(u1,u2,v1,v2);
422	}
423	myStatus \|= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
424	}
425	catch (Standard_Failure) {
426	#ifdef DEB
427	cout << "Warning: ShapeUpgrade_SplitSurface::Build(): Exception in Segment :";
428	Standard_Failure::Caught()->Print(cout); cout << endl;
429	#endif
430	Handle(Geom_Surface) theNewSurf = theNew;
431	theNew = new Geom_RectangularTrimmedSurface(theNewSurf,U1,U2,V1,V2);
432	}
433	Surfaces->SetValue((irow-1),(icol-1),theNew);
434	}
435	else {
436	// not a BSpline: trimming instead of segmentation
437	Handle(Geom_Surface)
438	theNewSurf = Handle(Geom_Surface)::DownCast(theNew);
439	Handle(Geom_RectangularTrimmedSurface) SplittedSurf=
440	new Geom_RectangularTrimmedSurface(theNewSurf,U1,U2,V1,V2);
441	Surfaces->SetValue((irow-1),(icol-1),SplittedSurf);
442	}
443
444	V1=V2;
445	}
446	U1=U2;
447	V1 = myVSplitValues->Value(1);
448	}
449	Standard_Integer nbU = myUSplitValues->Length();
450	TColStd_Array1OfReal UJoints(1,nbU);
451	Standard_Integer i;//svv Jan 10 2000 : porting on DEC
452	for(i = 1; i <= nbU; i++)
453	UJoints(i) = myUSplitValues->Value(i);
454
455	Standard_Integer nbV= myVSplitValues->Length();
456	TColStd_Array1OfReal VJoints(1,nbV);
457	for(i = 1; i <= nbV; i++)
458	VJoints(i) = myVSplitValues->Value(i);
459	myResSurfaces->Init(Surfaces,UJoints,VJoints);
460	// if (ShapeUpgrade::Debug()) cout<<"SplitSurface::Build - end"<<endl;
461	}
462
463
464	//=======================================================================
465	//function : GlobalUKnots
466	//purpose :
467	//=======================================================================
468
469	const Handle(TColStd_HSequenceOfReal)& ShapeUpgrade_SplitSurface::USplitValues() const
470	{
471	return myUSplitValues;
472	}
473	//=======================================================================
474	//function : GlobalVKnots
475	//purpose :
476	//=======================================================================
477
478	const Handle(TColStd_HSequenceOfReal)& ShapeUpgrade_SplitSurface::VSplitValues() const
479	{
480	return myVSplitValues;
481	}
482	//=======================================================================
483	//function : Perform
484	//purpose :
485	//=======================================================================
486
487	void ShapeUpgrade_SplitSurface::Perform(const Standard_Boolean Segment)
488	{
489	Compute(Segment);
490	// SetUSplitValues(myUSplitValues);
491	// SetVSplitValues(myVSplitValues);
492	Build (Segment);
493
494	}
495	//=======================================================================
496	//function : Compute
497	//purpose :
498	//=======================================================================
499
500	void ShapeUpgrade_SplitSurface::Compute(const Standard_Boolean /Segment/)
501	{
502	myStatus = ShapeExtend::EncodeStatus (ShapeExtend_OK);
503	}
504	//=======================================================================
505	//function : Status
506	//purpose :
507	//=======================================================================
508
509	Standard_Boolean ShapeUpgrade_SplitSurface::Status(const ShapeExtend_Status status) const
510	{
511	return ShapeExtend::DecodeStatus (myStatus, status);
512	}
513
514	const Handle(ShapeExtend_CompositeSurface)& ShapeUpgrade_SplitSurface::ResSurfaces() const
515	{
516	return myResSurfaces;
517	}