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geom/src/GEOMImpl/GEOMImpl_FillingDriver.cxx

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// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#include <Standard_Stream.hxx>
#include <GEOMImpl_FillingDriver.hxx>
#include <GEOM_Function.hxx>
#include <GEOMImpl_IFilling.hxx>
#include <GEOMImpl_Types.hxx>
#include <BRep_Tool.hxx>
#include <BRepAlgo.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <TopAbs.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <TopExp_Explorer.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Surface.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Geom_BSplineSurface.hxx>
#include <GeomFill_Line.hxx>
#include <GeomFill_AppSurf.hxx>
#include <GeomFill_SectionGenerator.hxx>
#include <Precision.hxx>
#include <Standard_ConstructionError.hxx>
#include <TColGeom_SequenceOfCurve.hxx>
#include <ShapeFix_Face.hxx>
#include <GeomAPI_PointsToBSplineSurface.hxx>
#include <Geom_BSplineCurve.hxx>
//=======================================================================
//function : GetID
//purpose :
//=======================================================================
const Standard_GUID& GEOMImpl_FillingDriver::GetID()
{
static Standard_GUID aFillingDriver ("FF1BBB62-5D14-4df2-980B-3A668264EA16");
return aFillingDriver;
}
//=======================================================================
//function : GEOMImpl_FillingDriver
//purpose :
//=======================================================================
GEOMImpl_FillingDriver::GEOMImpl_FillingDriver()
{
}
//=======================================================================
//function : Execute
//purpose :
//=======================================================================
Standard_Integer GEOMImpl_FillingDriver::Execute(TFunction_Logbook& log) const
{
if (Label().IsNull()) return 0;
Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
if (aFunction.IsNull()) return 0;
if (aFunction->GetType() != BASIC_FILLING) return 0;
GEOMImpl_IFilling IF (aFunction);
Handle(GEOM_Function) aShapeFunction = IF.GetShape();
if (aShapeFunction.IsNull()) return 0;
TopoDS_Shape aShape = aShapeFunction->GetValue();
if (aShape.IsNull() || aShape.ShapeType() != TopAbs_COMPOUND) return 0;
Standard_Integer mindeg = IF.GetMinDeg();
Standard_Integer maxdeg = IF.GetMaxDeg();
Standard_Real tol3d = IF.GetTol2D();
Standard_Real tol2d = IF.GetTol3D();
Standard_Integer nbiter = IF.GetNbIter();
Standard_Boolean isApprox = IF.GetApprox();
if (mindeg > maxdeg) {
Standard_RangeError::Raise("Minimal degree can not be more than maximal degree");
}
/* we verify the contents of the shape */
TopExp_Explorer Ex;
TopoDS_Shape Scurrent;
Standard_Real First, Last;
Handle(Geom_Curve) C;
TopoDS_Iterator It (aShape);
for (; It.More(); It.Next()) {
Scurrent = It.Value();
if (Scurrent.ShapeType() != TopAbs_EDGE)
Standard_ConstructionError::Raise("The argument compound must contain only edges");
}
if (!isApprox) {
// make filling as in old version of SALOME (before 4.1.1)
GeomFill_SectionGenerator Section;
Standard_Integer i = 0;
for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
Scurrent = Ex.Current();
if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
if (BRep_Tool::Degenerated(TopoDS::Edge(Scurrent))) continue;
C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
if (Scurrent.Orientation() == TopAbs_REVERSED)
// Mantis isuue 0020659: consider the orientation of the edges
C = new Geom_TrimmedCurve(C, Last, First);
else
C = new Geom_TrimmedCurve(C, First, Last);
Section.AddCurve(C);
i++;
}
/* a 'tolerance' is used to compare 2 knots : see GeomFill_Generator.cdl */
Section.Perform(Precision::Confusion());
Handle(GeomFill_Line) Line = new GeomFill_Line(i);
GeomFill_AppSurf App (mindeg, maxdeg, tol3d, tol2d, nbiter); /* user parameters */
App.Perform(Line, Section);
if (!App.IsDone()) return 0;
Standard_Integer UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots;
App.SurfShape(UDegree, VDegree, NbUPoles, NbVPoles, NbUKnots, NbVKnots);
Handle(Geom_BSplineSurface) GBS = new Geom_BSplineSurface
(App.SurfPoles(), App.SurfWeights(), App.SurfUKnots(), App.SurfVKnots(),
App.SurfUMults(), App.SurfVMults(), App.UDegree(), App.VDegree());
if (GBS.IsNull()) return 0;
aShape = BRepBuilderAPI_MakeFace(GBS);
}
else {
// implemented by skl 20.03.2008 for bug 16568
// make approximation - try to create bspline surface
// using GeomAPI_PointsToBSplineSurface
TColGeom_SequenceOfCurve aSeq;
int MaxNbPoles = 0;
// add curves from edges to sequence and find maximal
// number of poles if some of them are bsplines
for (Ex.Init(aShape, TopAbs_EDGE); Ex.More(); Ex.Next()) {
Scurrent = Ex.Current();
if (Scurrent.IsNull() || Scurrent.ShapeType() != TopAbs_EDGE) return 0;
if (BRep_Tool::Degenerated(TopoDS::Edge(Scurrent))) continue;
C = BRep_Tool::Curve(TopoDS::Edge(Scurrent), First, Last);
Handle(Geom_TrimmedCurve) TC = Handle(Geom_TrimmedCurve)::DownCast(C);
if(TC.IsNull()) {
Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(C);
if(!BC.IsNull()) {
MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
}
}
else {
Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(TC->BasisCurve());
if(BC.IsNull()) {
Handle(Geom_TrimmedCurve) TC1 = Handle(Geom_TrimmedCurve)::DownCast(TC->BasisCurve());
if(!TC1.IsNull()) {
BC = Handle(Geom_BSplineCurve)::DownCast(TC1->BasisCurve());
}
}
if(!BC.IsNull()) {
MaxNbPoles = Max(MaxNbPoles,BC->NbPoles());
}
}
aSeq.Append(C);
}
// prepare array of points for creation bspline surface
// size of this array: by U parameter - number of curves,
// by V parameter - determ using MaxNbPoles but it's
// value must be between 21(min) and 101(max)
int nbc = aSeq.Length();
int nbp = Max(21,2*MaxNbPoles-1);
if(nbp>101) nbp = 101;
TColgp_Array2OfPnt Points(1,nbc,1,nbp);
int ic = 1;
for(; ic<=nbc; ic++) {
Handle(Geom_Curve) C = aSeq.Value(ic);
double fp = C->FirstParameter();
double lp = C->LastParameter();
double dp = (lp-fp)/(nbp-1);
int j = 0;
gp_Pnt P;
for(; j<nbp; j++) {
C->D0(fp+dp*j,P);
Points.SetValue(ic,j+1,P);
}
}
GeomAPI_PointsToBSplineSurface PTB(Points,mindeg,maxdeg,GeomAbs_C2,tol3d);
Handle(Geom_BSplineSurface) BS = PTB.Surface();
BRepBuilderAPI_MakeFace BB(BS);
TopoDS_Face NewF = BB.Face();
Handle(ShapeFix_Face) sff = new ShapeFix_Face(NewF);
sff->Perform();
sff->FixOrientation();
aShape = sff->Face();
}
/* We test the validity of resulting shape */
if (!BRepAlgo::IsValid((aShape))) {
Standard_ConstructionError::Raise("Algorithm have produced an invalid shape result");
return 0;
}
aFunction->SetValue(aShape);
log.SetTouched(Label());
return 1;
}
//=======================================================================
//function : GEOMImpl_FillingDriver_Type_
//purpose :
//=======================================================================
Standard_EXPORT Handle_Standard_Type& GEOMImpl_FillingDriver_Type_()
{
static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
if ( aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
if ( aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
if ( aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);
static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_FillingDriver",
sizeof(GEOMImpl_FillingDriver),
1,
(Standard_Address)_Ancestors,
(Standard_Address)NULL);
return _aType;
}
//=======================================================================
//function : DownCast
//purpose :
//=======================================================================
const Handle(GEOMImpl_FillingDriver) Handle(GEOMImpl_FillingDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
{
Handle(GEOMImpl_FillingDriver) _anOtherObject;
if (!AnObject.IsNull()) {
if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_FillingDriver))) {
_anOtherObject = Handle(GEOMImpl_FillingDriver)((Handle(GEOMImpl_FillingDriver)&)AnObject);
}
}
return _anOtherObject;
}
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