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// File: ShapeUpgrade_SplitSurfaceContinuity.cxx
// Created: Wed Apr 14 15:19:20 1999
// Author: Roman LYGIN
// <rln@kinox.nnov.matra-dtv.fr>
#include <ShapeUpgrade_SplitSurfaceContinuity.ixx>
#include <Geom_BSplineSurface.hxx>
#include <Precision.hxx>
#include <ShapeUpgrade.hxx>
#include <TColGeom_HArray2OfSurface.hxx>
#include <TColStd_HArray1OfInteger.hxx>
#include <Geom_SweptSurface.hxx>
#include <TColStd_HSequenceOfReal.hxx>
#include <Geom_SurfaceOfRevolution.hxx>
#include <ShapeUpgrade_SplitCurve3dContinuity.hxx>
#include <Geom_SurfaceOfLinearExtrusion.hxx>
#include <TColGeom_HArray1OfCurve.hxx>
#include <gp_Ax1.hxx>
#include <Geom_RectangularTrimmedSurface.hxx>
#include <Geom_OffsetSurface.hxx>
#include <ShapeExtend.hxx>
//======================================================================
//function : ShapeUpgrade_SplitSurface
//purpose :
//=======================================================================
ShapeUpgrade_SplitSurfaceContinuity::ShapeUpgrade_SplitSurfaceContinuity()
{
myCriterion = GeomAbs_C1;
myTolerance = Precision::Confusion();
}
//=======================================================================
//function : SetCrierion
//purpose :
//=======================================================================
void ShapeUpgrade_SplitSurfaceContinuity::SetCriterion(const GeomAbs_Shape Criterion)
{
myCriterion = Criterion;
switch (myCriterion) {
default :
case GeomAbs_C1 : myCont = 1; break;
case GeomAbs_C2 : myCont = 2; break;
case GeomAbs_C3 : myCont = 3; break;
case GeomAbs_CN : myCont = 4; break;
}
}
//=======================================================================
//function : SetTolerance
//purpose :
//=======================================================================
void ShapeUpgrade_SplitSurfaceContinuity::SetTolerance(const Standard_Real Tol)
{
myTolerance = Tol;
}
//=======================================================================
//function : Build
//purpose :
//=======================================================================
void ShapeUpgrade_SplitSurfaceContinuity::Compute(const Standard_Boolean Segment)
{
if(!Segment) {
Standard_Real UF,UL,VF,VL;
mySurface->Bounds(UF,UL,VF,VL);
if(!Precision::IsInfinite(UF)) myUSplitValues->SetValue(1,UF);
if(!Precision::IsInfinite(UL)) myUSplitValues->SetValue(myUSplitValues->Length(),UL);
if(!Precision::IsInfinite(VF)) myVSplitValues->SetValue(1,VF);
if(!Precision::IsInfinite(VL)) myVSplitValues->SetValue(myVSplitValues->Length(),VL);
}
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());
Standard_Real precision = Precision::Confusion();
// if (ShapeUpgrade::Debug()) cout << "SplitSurfaceContinuity::Build" << endl;
if(mySurface->Continuity() < myCriterion)
myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE2);
if (myUSplitValues->Length() >2 || myVSplitValues->Length() >2 )
myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
if (mySurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution))) {
Handle(Geom_SurfaceOfRevolution) Surface = Handle(Geom_SurfaceOfRevolution)::DownCast(mySurface);
if(Surface->Continuity() >= myCriterion && myUSplitValues->Length() ==2 && myVSplitValues->Length() ==2 ) {
return;
}
Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
ShapeUpgrade_SplitCurve3dContinuity spc;
spc.Init(BasCurve,VFirst,VLast);
spc.SetCriterion(myCriterion);
spc.SetTolerance(myTolerance);
spc.SetSplitValues(myVSplitValues);
spc.Compute();
myVSplitValues->Clear();
myVSplitValues->ChangeSequence() = spc.SplitValues()->Sequence();
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);
if(Surface->Continuity() >= myCriterion && myUSplitValues->Length() ==2 && myVSplitValues->Length() == 2) {
return;
}
Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
ShapeUpgrade_SplitCurve3dContinuity spc;
spc.Init(BasCurve,UFirst,ULast);
spc.SetCriterion(myCriterion);
spc.SetTolerance(myTolerance);
spc.SetSplitValues(myUSplitValues);
spc.Compute();
myUSplitValues->Clear();
myUSplitValues->ChangeSequence() = spc.SplitValues()->Sequence();
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 );
Handle(Geom_Curve) aNewBascurve = spc.GetCurve();
Surface->SetBasisCurve(aNewBascurve);
}
return;
}
if (mySurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
Handle(Geom_RectangularTrimmedSurface) tmp = Handle(Geom_RectangularTrimmedSurface)::DownCast (mySurface);
if(tmp->Continuity() >= myCriterion && myUSplitValues->Length() ==2 && myVSplitValues->Length() == 2) {
return;
}
Standard_Real U1,U2,V1,V2;
tmp->Bounds(U1,U2,V1,V2);
Handle(Geom_Surface) theSurf = tmp->BasisSurface();
ShapeUpgrade_SplitSurfaceContinuity sps;
sps.Init(theSurf,Max(U1,UFirst),Min(U2,ULast),Max(V1,VFirst),Min(V2,VLast));
sps.SetUSplitValues(myUSplitValues);
sps.SetVSplitValues(myVSplitValues);
sps.SetTolerance(myTolerance);
sps.SetCriterion(myCriterion);
sps.Compute(Standard_True);
myUSplitValues->Clear();
myUSplitValues->ChangeSequence() = sps.USplitValues()->Sequence();
myVSplitValues->Clear();
myVSplitValues->ChangeSequence() = sps.VSplitValues()->Sequence();
myStatus |= sps.myStatus;
return;
}
else if (mySurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
GeomAbs_Shape BasCriterion;
switch (myCriterion) {
default :
case GeomAbs_C1 : BasCriterion = GeomAbs_C2; break;
case GeomAbs_C2 : BasCriterion = GeomAbs_C3; break;
case GeomAbs_C3 : //if (ShapeUpgrade::Debug()) cout<<". this criterion is not suitable for a Offset Surface"<<endl;;
#ifdef DEB
cout << "Warning: ShapeUpgrade_SplitSurfaceContinuity: criterion C3 for Offset surface" << endl;
#endif
case GeomAbs_CN : BasCriterion = GeomAbs_CN; break;
}
Handle(Geom_OffsetSurface) tmp = Handle(Geom_OffsetSurface)::DownCast (mySurface);
Handle(Geom_Surface) theSurf = tmp->BasisSurface();
if(theSurf->Continuity() >= BasCriterion && myUSplitValues->Length() ==2 && myVSplitValues->Length() == 2) {
return;
}
ShapeUpgrade_SplitSurfaceContinuity sps;
sps.Init(theSurf,UFirst,ULast,VFirst,VLast);
sps.SetUSplitValues(myUSplitValues);
sps.SetVSplitValues(myVSplitValues);
sps.SetTolerance(myTolerance);
sps.SetCriterion(BasCriterion);
sps.Compute(Standard_True);
myUSplitValues->Clear();
myUSplitValues->ChangeSequence() = sps.USplitValues()->Sequence();
myVSplitValues->Clear();
myVSplitValues->ChangeSequence() = sps.VSplitValues()->Sequence();
myStatus |= sps.myStatus;
return;
}
Handle(Geom_BSplineSurface) MyBSpline;
if(mySurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface)))
MyBSpline = Handle(Geom_BSplineSurface)::DownCast(mySurface->Copy());
if (MyBSpline.IsNull()) {
// if (ShapeUpgrade::Debug()) cout<<". "<<" Surface is not a Bspline"<<endl;
return;
}
if(mySurface->Continuity() >= myCriterion) {
return;
}
// it is a BSplineSurface
Standard_Integer UDeg=MyBSpline->UDegree();
Standard_Integer VDeg=MyBSpline->VDegree();
Standard_Integer NbUKnots= MyBSpline->NbUKnots();
Standard_Integer UFirstInd =MyBSpline->FirstUKnotIndex()+1,
ULastInd = MyBSpline->LastUKnotIndex()-1,
VFirstInd =MyBSpline->FirstVKnotIndex()+1,
VLastInd = MyBSpline->LastVKnotIndex()-1;
Standard_Integer NbVKnots= MyBSpline->NbVKnots();
// if (ShapeUpgrade::Debug()) cout<<". NbUKnots="<<NbUKnots<<endl;
if (NbUKnots>2) {
// Only the internal knots are checked.
Standard_Integer iknot= UFirstInd;
for(Standard_Integer j =2; j <= myUSplitValues->Length(); j++) {
ULast = myUSplitValues->Value(j);
for (; iknot <= ULastInd; iknot++) {
Standard_Real valknot = MyBSpline->UKnot(iknot);
if(valknot <= UFirst + precision) continue;
if( valknot >= ULast - precision) break;
Standard_Integer Continuity=UDeg-MyBSpline->UMultiplicity(iknot);
if (Continuity < myCont) {
// At this knot, the Surface is C0; try to remove Knot.
Standard_Integer newMultiplicity=UDeg - myCont;
Standard_Boolean corrected = Standard_False;
if ( newMultiplicity >= 0 )
corrected=MyBSpline->RemoveUKnot(iknot, newMultiplicity, myTolerance);
if (corrected && newMultiplicity > 0) {
Continuity=UDeg-MyBSpline->UMultiplicity(iknot);
corrected = (Continuity >= myCont);
}
if (corrected) {
// at this knot, the continuity is now C1. Nothing else to do.
// if (ShapeUpgrade::Debug()) cout<<". Correction at UKnot "<<iknot<<endl;
// PTV 15.05.2002 decrease iknot and ULastIndex values if knot removed
if (newMultiplicity ==0) { iknot--; ULastInd--; }
myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
}
else {
// impossible to force C1 within the tolerance:
// this knot will be a splitting value.
Standard_Real u=MyBSpline->UKnot(iknot);
myUSplitValues->InsertBefore(j++,u);
myNbResultingRow++;
// if (ShapeUpgrade::Debug()) cout<<". Splitting at Knot "<<iknot<<endl;
}
}
}
UFirst = ULast;
}
}
// if (ShapeUpgrade::Debug()) cout<<". NbVKnots="<<NbVKnots<<endl;
if (NbVKnots>2) {
// Only the internal knots are checked.
Standard_Integer iknot=VFirstInd;
for(Standard_Integer j1 =2; j1 <= myVSplitValues->Length(); j1++) {
VLast = myVSplitValues->Value(j1);
for (; iknot <= VLastInd; iknot++) {
Standard_Real valknot = MyBSpline->VKnot(iknot);
if(valknot <= VFirst + precision) continue;
if( valknot >= VLast - precision) break;
Standard_Integer Continuity=VDeg-MyBSpline->VMultiplicity(iknot);
if (Continuity < myCont) {
// At this knot, the Surface is C0; try to remove Knot.
Standard_Integer newMultiplicity=VDeg - myCont;
Standard_Boolean corrected = Standard_False;
if( newMultiplicity >= 0 )
corrected=MyBSpline->RemoveVKnot(iknot, newMultiplicity, myTolerance);
if (corrected && newMultiplicity > 0) {
Continuity=VDeg-MyBSpline->VMultiplicity(iknot);
corrected = (Continuity >= myCont);
}
if (corrected ) {
// at this knot, the continuity is now Criterion. Nothing else to do.
// if (ShapeUpgrade::Debug()) cout<<". Correction at VKnot "<<iknot<<endl;
// PTV 15.05.2002 decrease iknot and ULastIndex values if knot removed
if (newMultiplicity ==0) { iknot--; VLastInd--; }
myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
}
else {
// this knot will be a splitting value.
Standard_Real v=MyBSpline->VKnot(iknot);
myVSplitValues->InsertBefore(j1++,v);
myNbResultingCol++;
// if (ShapeUpgrade::Debug()) cout<<". Splitting at Knot "<<iknot<<endl;
}
}
}
VFirst = VLast;
}
}
if ( Status ( ShapeExtend_DONE3 ) ) {
mySurface = MyBSpline;
}
if (myUSplitValues->Length() >2 || myVSplitValues->Length() >2 )
myStatus |= ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
}
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