// 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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//
//
using namespace std;
#include "StdMeshers_Regular_1D.hxx"
+#include "StdMeshers_Distribution.hxx"
#include "SMESH_Gen.hxx"
#include "SMESH_Mesh.hxx"
+#include "SMESH_HypoFilter.hxx"
+#include "SMESH_subMesh.hxx"
#include "StdMeshers_LocalLength.hxx"
#include "StdMeshers_NumberOfSegments.hxx"
+#include "StdMeshers_Arithmetic1D.hxx"
+#include "StdMeshers_StartEndLength.hxx"
+#include "StdMeshers_Deflection1D.hxx"
+#include "StdMeshers_AutomaticLength.hxx"
#include "SMDS_MeshElement.hxx"
#include "SMDS_MeshNode.hxx"
#include "SMDS_EdgePosition.hxx"
+#include "Utils_SALOME_Exception.hxx"
#include "utilities.h"
+#include <BRep_Tool.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Shape.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <GeomAdaptor_Curve.hxx>
-#include <BRep_Tool.hxx>
#include <GCPnts_AbscissaPoint.hxx>
#include <GCPnts_UniformAbscissa.hxx>
+#include <GCPnts_UniformDeflection.hxx>
+#include <Standard_ErrorHandler.hxx>
+#include <Precision.hxx>
+#include <Expr_GeneralExpression.hxx>
+#include <Expr_NamedUnknown.hxx>
+#include <Expr_Array1OfNamedUnknown.hxx>
+#include <TColStd_Array1OfReal.hxx>
+#include <ExprIntrp_GenExp.hxx>
+#include <OSD.hxx>
#include <string>
-#include <algorithm>
+#include <math.h>
+
+using namespace std;
//=============================================================================
/*!
{
MESSAGE("StdMeshers_Regular_1D::StdMeshers_Regular_1D");
_name = "Regular_1D";
- // _shapeType = TopAbs_EDGE;
_shapeType = (1 << TopAbs_EDGE);
+
_compatibleHypothesis.push_back("LocalLength");
_compatibleHypothesis.push_back("NumberOfSegments");
+ _compatibleHypothesis.push_back("StartEndLength");
+ _compatibleHypothesis.push_back("Deflection1D");
+ _compatibleHypothesis.push_back("Arithmetic1D");
+ _compatibleHypothesis.push_back("AutomaticLength");
- _localLength = 0;
- _numberOfSegments = 0;
- _hypLocalLength = NULL;
- _hypNumberOfSegments = NULL;
+ _compatibleHypothesis.push_back("QuadraticMesh"); // auxiliary !!!
}
//=============================================================================
//=============================================================================
bool StdMeshers_Regular_1D::CheckHypothesis
- (SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape,
+ (SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
SMESH_Hypothesis::Hypothesis_Status& aStatus)
{
- //MESSAGE("StdMeshers_Regular_1D::CheckHypothesis");
+ _hypType = NONE;
+ _quadraticMesh = false;
+
+ const bool ignoreAuxiliaryHyps = false;
+ const list <const SMESHDS_Hypothesis * > & hyps =
+ GetUsedHypothesis(aMesh, aShape, ignoreAuxiliaryHyps);
+
+ // find non-auxiliary hypothesis
+ const SMESHDS_Hypothesis *theHyp = 0;
+ list <const SMESHDS_Hypothesis * >::const_iterator h = hyps.begin();
+ for ( ; h != hyps.end(); ++h ) {
+ if ( static_cast<const SMESH_Hypothesis*>(*h)->IsAuxiliary() ) {
+ if ( strcmp( "QuadraticMesh", (*h)->GetName() ) == 0 )
+ _quadraticMesh = true;
+ }
+ else {
+ if ( !theHyp )
+ theHyp = *h; // use only the first non-auxiliary hypothesis
+ }
+ }
+
+ if ( !theHyp )
+ {
+ aStatus = SMESH_Hypothesis::HYP_MISSING;
+ return false; // can't work without a hypothesis
+ }
+
+ string hypName = theHyp->GetName();
+
+ if (hypName == "LocalLength")
+ {
+ const StdMeshers_LocalLength * hyp =
+ dynamic_cast <const StdMeshers_LocalLength * >(theHyp);
+ ASSERT(hyp);
+ _value[ BEG_LENGTH_IND ] = _value[ END_LENGTH_IND ] = hyp->GetLength();
+ ASSERT( _value[ BEG_LENGTH_IND ] > 0 );
+ _hypType = LOCAL_LENGTH;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+
+ else if (hypName == "NumberOfSegments")
+ {
+ const StdMeshers_NumberOfSegments * hyp =
+ dynamic_cast <const StdMeshers_NumberOfSegments * >(theHyp);
+ ASSERT(hyp);
+ _ivalue[ NB_SEGMENTS_IND ] = hyp->GetNumberOfSegments();
+ ASSERT( _ivalue[ NB_SEGMENTS_IND ] > 0 );
+ _ivalue[ DISTR_TYPE_IND ] = (int) hyp->GetDistrType();
+ switch (_ivalue[ DISTR_TYPE_IND ])
+ {
+ case StdMeshers_NumberOfSegments::DT_Scale:
+ _value[ SCALE_FACTOR_IND ] = hyp->GetScaleFactor();
+ break;
+ case StdMeshers_NumberOfSegments::DT_TabFunc:
+ _vvalue[ TAB_FUNC_IND ] = hyp->GetTableFunction();
+ break;
+ case StdMeshers_NumberOfSegments::DT_ExprFunc:
+ _svalue[ EXPR_FUNC_IND ] = hyp->GetExpressionFunction();
+ break;
+ case StdMeshers_NumberOfSegments::DT_Regular:
+ break;
+ default:
+ ASSERT(0);
+ break;
+ }
+ if (_ivalue[ DISTR_TYPE_IND ] == StdMeshers_NumberOfSegments::DT_TabFunc ||
+ _ivalue[ DISTR_TYPE_IND ] == StdMeshers_NumberOfSegments::DT_ExprFunc)
+ _ivalue[ CONV_MODE_IND ] = hyp->ConversionMode();
+ _hypType = NB_SEGMENTS;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+
+ else if (hypName == "Arithmetic1D")
+ {
+ const StdMeshers_Arithmetic1D * hyp =
+ dynamic_cast <const StdMeshers_Arithmetic1D * >(theHyp);
+ ASSERT(hyp);
+ _value[ BEG_LENGTH_IND ] = hyp->GetLength( true );
+ _value[ END_LENGTH_IND ] = hyp->GetLength( false );
+ ASSERT( _value[ BEG_LENGTH_IND ] > 0 && _value[ END_LENGTH_IND ] > 0 );
+ _hypType = ARITHMETIC_1D;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+
+ else if (hypName == "StartEndLength")
+ {
+ const StdMeshers_StartEndLength * hyp =
+ dynamic_cast <const StdMeshers_StartEndLength * >(theHyp);
+ ASSERT(hyp);
+ _value[ BEG_LENGTH_IND ] = hyp->GetLength( true );
+ _value[ END_LENGTH_IND ] = hyp->GetLength( false );
+ ASSERT( _value[ BEG_LENGTH_IND ] > 0 && _value[ END_LENGTH_IND ] > 0 );
+ _hypType = BEG_END_LENGTH;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+
+ else if (hypName == "Deflection1D")
+ {
+ const StdMeshers_Deflection1D * hyp =
+ dynamic_cast <const StdMeshers_Deflection1D * >(theHyp);
+ ASSERT(hyp);
+ _value[ DEFLECTION_IND ] = hyp->GetDeflection();
+ ASSERT( _value[ DEFLECTION_IND ] > 0 );
+ _hypType = DEFLECTION;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+
+ else if (hypName == "AutomaticLength")
+ {
+ StdMeshers_AutomaticLength * hyp = const_cast<StdMeshers_AutomaticLength *>
+ (dynamic_cast <const StdMeshers_AutomaticLength * >(theHyp));
+ ASSERT(hyp);
+ _value[ BEG_LENGTH_IND ] = _value[ END_LENGTH_IND ] = hyp->GetLength( &aMesh, aShape );
+ ASSERT( _value[ BEG_LENGTH_IND ] > 0 );
+ _hypType = LOCAL_LENGTH;
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ }
+ else
+ aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
+
+ return ( _hypType != NONE );
+}
+
+//=======================================================================
+//function : compensateError
+//purpose : adjust theParams so that the last segment length == an
+//=======================================================================
+
+static void compensateError(double a1, double an,
+ double U1, double Un,
+ double length,
+ GeomAdaptor_Curve& C3d,
+ list<double> & theParams)
+{
+ int i, nPar = theParams.size();
+ if ( a1 + an < length && nPar > 1 )
+ {
+ list<double>::reverse_iterator itU = theParams.rbegin();
+ double Ul = *itU++;
+ // dist from the last point to the edge end <Un>, it should be equal <an>
+ double Ln = GCPnts_AbscissaPoint::Length( C3d, Ul, Un );
+ double dLn = an - Ln; // error of <an>
+ if ( Abs( dLn ) <= Precision::Confusion() )
+ return;
+ double dU = Abs( Ul - *itU ); // parametric length of the last but one segment
+ double dUn = dLn * Abs( Un - U1 ) / length; // parametric error of <an>
+ if ( dUn < 0.5 * dU ) { // last segment is a bit shorter than it should
+ dUn = -dUn; // move the last parameter to the edge beginning
+ }
+ else { // last segment is much shorter than it should -> remove the last param and
+ theParams.pop_back(); nPar--; // move the rest points toward the edge end
+ Ln = GCPnts_AbscissaPoint::Length( C3d, theParams.back(), Un );
+ dUn = ( an - Ln ) * Abs( Un - U1 ) / length;
+ if ( dUn < 0.5 * dU )
+ dUn = -dUn;
+ }
+ if ( U1 > Un )
+ dUn = -dUn;
+ double q = dUn / ( nPar - 1 );
+ for ( itU = theParams.rbegin(), i = 1; i < nPar; itU++, i++ ) {
+ (*itU) += dUn;
+ dUn -= q;
+ }
+ }
+}
- list <const SMESHDS_Hypothesis * >::const_iterator itl;
- const SMESHDS_Hypothesis *theHyp;
+static bool computeParamByFunc(Adaptor3d_Curve& C3d, double first, double last,
+ double length, bool theReverse,
+ int nbSeg, Function& func,
+ list<double>& theParams)
+{
+ // never do this way
+ //OSD::SetSignal( true );
+
+ if( nbSeg<=0 )
+ return false;
+
+ MESSAGE( "computeParamByFunc" );
+
+ int nbPnt = 1 + nbSeg;
+ vector<double> x(nbPnt, 0.);
+
+ if( !buildDistribution( func, 0.0, 1.0, nbSeg, x, 1E-4 ) )
+ return false;
+
+ MESSAGE( "Points:\n" );
+ char buf[1024];
+ for( int i=0; i<=nbSeg; i++ )
+ {
+ sprintf( buf, "%f\n", float(x[i] ) );
+ MESSAGE( buf );
+ }
+
+
+
+ // apply parameters in range [0,1] to the space of the curve
+ double prevU = first;
+ double sign = 1.;
+ if (theReverse)
+ {
+ prevU = last;
+ sign = -1.;
+ }
+ for( int i = 1; i < nbSeg; i++ )
+ {
+ double curvLength = length * (x[i] - x[i-1]) * sign;
+ GCPnts_AbscissaPoint Discret( C3d, curvLength, prevU );
+ if ( !Discret.IsDone() )
+ return false;
+ double U = Discret.Parameter();
+ if ( U > first && U < last )
+ theParams.push_back( U );
+ else
+ return false;
+ prevU = U;
+ }
+ return true;
+}
- const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(aMesh, aShape);
- int nbHyp = hyps.size();
- if (!nbHyp)
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+bool StdMeshers_Regular_1D::computeInternalParameters(const TopoDS_Edge& theEdge,
+ list<double> & theParams,
+ const bool theReverse) const
+{
+ theParams.clear();
+
+ double f, l;
+ Handle(Geom_Curve) Curve = BRep_Tool::Curve(theEdge, f, l);
+ GeomAdaptor_Curve C3d (Curve, f, l);
+
+ double length = EdgeLength(theEdge);
+
+ switch( _hypType )
+ {
+ case LOCAL_LENGTH:
+ case NB_SEGMENTS: {
+
+ double eltSize = 1;
+ if ( _hypType == LOCAL_LENGTH )
+ {
+ // Local Length hypothesis
+ double nbseg = ceil(length / _value[ BEG_LENGTH_IND ]); // integer sup
+ if (nbseg <= 0)
+ nbseg = 1; // degenerated edge
+ eltSize = length / nbseg;
+ }
+ else
+ {
+ // Number Of Segments hypothesis
+ int NbSegm = _ivalue[ NB_SEGMENTS_IND ];
+ if ( NbSegm < 1 ) return false;
+ if ( NbSegm == 1 ) return true;
+
+ switch (_ivalue[ DISTR_TYPE_IND ])
+ {
+ case StdMeshers_NumberOfSegments::DT_Scale:
{
- aStatus = SMESH_Hypothesis::HYP_MISSING;
- return false; // can't work with no hypothesis
+ double scale = _value[ SCALE_FACTOR_IND ];
+
+ if (fabs(scale - 1.0) < Precision::Confusion()) {
+ // special case to avoid division on zero
+ for (int i = 1; i < NbSegm; i++) {
+ double param = f + (l - f) * i / NbSegm;
+ theParams.push_back( param );
+ }
+ } else {
+ // general case of scale distribution
+ if ( theReverse )
+ scale = 1.0 / scale;
+
+ double alpha = pow(scale, 1.0 / (NbSegm - 1));
+ double factor = (l - f) / (1.0 - pow(alpha, NbSegm));
+
+ for (int i = 1; i < NbSegm; i++) {
+ double param = f + factor * (1.0 - pow(alpha, i));
+ theParams.push_back( param );
+ }
+ }
+ return true;
}
-
- itl = hyps.begin();
- theHyp = (*itl); // use only the first hypothesis
-
- string hypName = theHyp->GetName();
- int hypId = theHyp->GetID();
- //SCRUTE(hypName);
-
- bool isOk = false;
-
- if (hypName == "LocalLength")
- {
- _hypLocalLength = dynamic_cast <const StdMeshers_LocalLength * >(theHyp);
- ASSERT(_hypLocalLength);
- _localLength = _hypLocalLength->GetLength();
- _numberOfSegments = 0;
- isOk = true;
- aStatus = SMESH_Hypothesis::HYP_OK;
- }
-
- else if (hypName == "NumberOfSegments")
- {
- _hypNumberOfSegments =
- dynamic_cast <const StdMeshers_NumberOfSegments * >(theHyp);
- ASSERT(_hypNumberOfSegments);
- _numberOfSegments = _hypNumberOfSegments->GetNumberOfSegments();
- _scaleFactor = _hypNumberOfSegments->GetScaleFactor();
- _localLength = 0;
- isOk = true;
- aStatus = SMESH_Hypothesis::HYP_OK;
- }
- else
- aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
-
- //SCRUTE(_localLength);
- //SCRUTE(_numberOfSegments);
-
- return isOk;
+ break;
+ case StdMeshers_NumberOfSegments::DT_TabFunc:
+ {
+ FunctionTable func(_vvalue[ TAB_FUNC_IND ], _ivalue[ CONV_MODE_IND ]);
+ return computeParamByFunc(C3d, f, l, length, theReverse,
+ _ivalue[ NB_SEGMENTS_IND ], func,
+ theParams);
+ }
+ break;
+ case StdMeshers_NumberOfSegments::DT_ExprFunc:
+ {
+ FunctionExpr func(_svalue[ EXPR_FUNC_IND ].c_str(), _ivalue[ CONV_MODE_IND ]);
+ return computeParamByFunc(C3d, f, l, length, theReverse,
+ _ivalue[ NB_SEGMENTS_IND ], func,
+ theParams);
+ }
+ break;
+ case StdMeshers_NumberOfSegments::DT_Regular:
+ eltSize = length / _ivalue[ NB_SEGMENTS_IND ];
+ break;
+ default:
+ return false;
+ }
+ }
+ GCPnts_UniformAbscissa Discret(C3d, eltSize, f, l);
+ if ( !Discret.IsDone() )
+ return false;
+
+ int NbPoints = Discret.NbPoints();
+ for ( int i = 2; i < NbPoints; i++ )
+ {
+ double param = Discret.Parameter(i);
+ theParams.push_back( param );
+ }
+ compensateError( eltSize, eltSize, f, l, length, C3d, theParams ); // for PAL9899
+ return true;
+ }
+
+ case BEG_END_LENGTH: {
+
+ // geometric progression: SUM(n) = ( a1 - an * q ) / ( 1 - q ) = length
+
+ double a1 = _value[ BEG_LENGTH_IND ];
+ double an = _value[ END_LENGTH_IND ];
+ double q = ( length - a1 ) / ( length - an );
+
+ double U1 = theReverse ? l : f;
+ double Un = theReverse ? f : l;
+ double param = U1;
+ double eltSize = theReverse ? -a1 : a1;
+ while ( 1 ) {
+ // computes a point on a curve <C3d> at the distance <eltSize>
+ // from the point of parameter <param>.
+ GCPnts_AbscissaPoint Discret( C3d, eltSize, param );
+ if ( !Discret.IsDone() ) break;
+ param = Discret.Parameter();
+ if ( param > f && param < l )
+ theParams.push_back( param );
+ else
+ break;
+ eltSize *= q;
+ }
+ compensateError( a1, an, U1, Un, length, C3d, theParams );
+ return true;
+ }
+
+ case ARITHMETIC_1D: {
+
+ // arithmetic progression: SUM(n) = ( an - a1 + q ) * ( a1 + an ) / ( 2 * q ) = length
+
+ double a1 = _value[ BEG_LENGTH_IND ];
+ double an = _value[ END_LENGTH_IND ];
+
+ double q = ( an - a1 ) / ( 2 *length/( a1 + an ) - 1 );
+ int n = int( 1 + ( an - a1 ) / q );
+
+ double U1 = theReverse ? l : f;
+ double Un = theReverse ? f : l;
+ double param = U1;
+ double eltSize = a1;
+ if ( theReverse ) {
+ eltSize = -eltSize;
+ q = -q;
+ }
+ while ( n-- > 0 && eltSize * ( Un - U1 ) > 0 ) {
+ // computes a point on a curve <C3d> at the distance <eltSize>
+ // from the point of parameter <param>.
+ GCPnts_AbscissaPoint Discret( C3d, eltSize, param );
+ if ( !Discret.IsDone() ) break;
+ param = Discret.Parameter();
+ if ( param > f && param < l )
+ theParams.push_back( param );
+ else
+ break;
+ eltSize += q;
+ }
+ compensateError( a1, an, U1, Un, length, C3d, theParams );
+
+ return true;
+ }
+
+ case DEFLECTION: {
+
+ GCPnts_UniformDeflection Discret(C3d, _value[ DEFLECTION_IND ], f, l, true);
+ if ( !Discret.IsDone() )
+ return false;
+
+ int NbPoints = Discret.NbPoints();
+ for ( int i = 2; i < NbPoints; i++ )
+ {
+ double param = Discret.Parameter(i);
+ theParams.push_back( param );
+ }
+ return true;
+
+ }
+
+ default:;
+ }
+
+ return false;
}
//=============================================================================
bool StdMeshers_Regular_1D::Compute(SMESH_Mesh & aMesh, const TopoDS_Shape & aShape)
{
- MESSAGE("StdMeshers_Regular_1D::Compute");
-
- SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
- SMESH_subMesh *theSubMesh = aMesh.GetSubMesh(aShape);
-
- const TopoDS_Edge & EE = TopoDS::Edge(aShape);
- TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
-
- double f, l;
- Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
-
- TopoDS_Vertex VFirst, VLast;
- TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
-
- double length = EdgeLength(E);
- //SCRUTE(length);
-
- double eltSize = 1;
-// if (_localLength > 0) eltSize = _localLength;
- if (_localLength > 0)
- {
- double nbseg = ceil(length / _localLength); // integer sup
- if (nbseg <= 0)
- nbseg = 1; // degenerated edge
- eltSize = length / nbseg;
- }
- else
- {
- ASSERT(_numberOfSegments > 0);
- eltSize = length / _numberOfSegments;
- }
-
- ASSERT(!VFirst.IsNull());
- SMDS_NodeIteratorPtr lid= aMesh.GetSubMesh(VFirst)->GetSubMeshDS()->GetNodes();
- const SMDS_MeshNode * idFirst = lid->next();
-
- ASSERT(!VLast.IsNull());
- lid=aMesh.GetSubMesh(VLast)->GetSubMeshDS()->GetNodes();
- const SMDS_MeshNode * idLast = lid->next();
-
- if (!Curve.IsNull())
- {
- GeomAdaptor_Curve C3d(Curve);
- GCPnts_UniformAbscissa Discret(C3d, eltSize, f, l);
- int NbPoints = Discret.NbPoints();
- //MESSAGE("nb points on edge : "<<NbPoints);
-
- // edge extrema (indexes : 1 & NbPoints) already in SMDS (TopoDS_Vertex)
- // only internal nodes receive an edge position with param on curve
-
- const SMDS_MeshNode * idPrev = idFirst;
- for (int i = 2; i < NbPoints; i++)
- {
- double param = Discret.Parameter(i);
-
- if (_numberOfSegments > 1)
- {
- double epsilon = 0.001;
- if (fabs(_scaleFactor - 1.0) > epsilon)
- {
- double alpha =
- pow(_scaleFactor, 1.0 / (_numberOfSegments - 1));
- double d =
- length * (1 - pow(alpha, i - 1)) / (1 - pow(alpha,
- _numberOfSegments));
- param = d;
- }
- }
-
- gp_Pnt P = Curve->Value(param);
-
- //Add the Node in the DataStructure
- //MESSAGE("point "<<nodeId<<" "<<P.X()<<" "<<P.Y()<<" "<<P.Z()<<" - "<<i<<" "<<param);
- SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnEdge(node, E);
-
- // **** edgePosition associe au point = param.
- SMDS_EdgePosition* epos =
- dynamic_cast<SMDS_EdgePosition *>(node->GetPosition().get());
- epos->SetUParameter(param);
-
- SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
- meshDS->SetMeshElementOnShape(edge, E);
- idPrev = node;
- }
- SMDS_MeshEdge* edge = meshDS->AddEdge(idPrev, idLast);
- meshDS->SetMeshElementOnShape(edge, E);
- }
- else
- {
-// MESSAGE ("Edge Degeneree non traitee --- arret");
-// ASSERT(0);
- if (BRep_Tool::Degenerated(E))
- {
- // Edge is a degenerated Edge : We put n = 5 points on the edge.
- int NbPoints = 5;
- BRep_Tool::Range(E, f, l);
- double du = (l - f) / (NbPoints - 1);
- MESSAGE("************* Degenerated edge! *****************");
-
- TopoDS_Vertex V1, V2;
- TopExp::Vertices(E, V1, V2);
- gp_Pnt P = BRep_Tool::Pnt(V1);
-
- const SMDS_MeshNode * idPrev = idFirst;
- for (int i = 2; i < NbPoints; i++)
- {
- double param = f + (i - 1) * du;
- SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnEdge(node, E);
-
-// Handle (SMDS_EdgePosition) epos
-// = new SMDS_EdgePosition(theSubMesh->GetId(),param);
-// node->SetPosition(epos);
- SMDS_EdgePosition* epos =
- dynamic_cast<SMDS_EdgePosition*>(node->GetPosition().get());
- epos->SetUParameter(param);
-
- SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
- meshDS->SetMeshElementOnShape(edge, E);
- idPrev = node;
- }
- SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast);
- meshDS->SetMeshElementOnShape(edge, E);
- }
- else
- ASSERT(0);
- }
- return true;
+ MESSAGE("StdMeshers_Regular_1D::Compute");
+
+ if ( _hypType == NONE )
+ return false;
+
+ SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
+ aMesh.GetSubMesh(aShape);
+
+ const TopoDS_Edge & EE = TopoDS::Edge(aShape);
+ TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
+ int shapeID = meshDS->ShapeToIndex( E );
+
+ double f, l;
+ Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
+
+ TopoDS_Vertex VFirst, VLast;
+ TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
+
+ ASSERT(!VFirst.IsNull());
+ SMDS_NodeIteratorPtr lid= aMesh.GetSubMesh(VFirst)->GetSubMeshDS()->GetNodes();
+ if (!lid->more())
+ {
+ MESSAGE (" NO NODE BUILT ON VERTEX ");
+ return false;
+ }
+ const SMDS_MeshNode * idFirst = lid->next();
+
+ ASSERT(!VLast.IsNull());
+ lid=aMesh.GetSubMesh(VLast)->GetSubMeshDS()->GetNodes();
+ if (!lid->more()) {
+ MESSAGE (" NO NODE BUILT ON VERTEX ");
+ return false;
+ }
+ const SMDS_MeshNode * idLast = lid->next();
+
+ if (!Curve.IsNull()) {
+ list< double > params;
+ bool reversed = false;
+ if ( !_mainEdge.IsNull() )
+ reversed = aMesh.IsReversedInChain( EE, _mainEdge );
+ try {
+ if ( ! computeInternalParameters( E, params, reversed )) {
+ //cout << "computeInternalParameters() failed" <<endl;
+ return false;
+ }
+ }
+ catch ( Standard_Failure ) {
+ //cout << "computeInternalParameters() failed, Standard_Failure" <<endl;
+ return false;
+ }
+
+ // edge extrema (indexes : 1 & NbPoints) already in SMDS (TopoDS_Vertex)
+ // only internal nodes receive an edge position with param on curve
+
+ const SMDS_MeshNode * idPrev = idFirst;
+ double parPrev = f;
+ double parLast = l;
+// if(reversed) {
+// parPrev = l;
+// parLast = f;
+// }
+
+ for (list<double>::iterator itU = params.begin(); itU != params.end(); itU++) {
+ double param = *itU;
+ gp_Pnt P = Curve->Value(param);
+
+ //Add the Node in the DataStructure
+ SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnEdge(node, shapeID, param);
+
+ if(_quadraticMesh) {
+ // create medium node
+ double prm = ( parPrev + param )/2;
+ gp_Pnt PM = Curve->Value(prm);
+ SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
+ meshDS->SetNodeOnEdge(NM, shapeID, prm);
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ else {
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+
+ idPrev = node;
+ parPrev = param;
+ }
+ if(_quadraticMesh) {
+ double prm = ( parPrev + parLast )/2;
+ gp_Pnt PM = Curve->Value(prm);
+ SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
+ meshDS->SetNodeOnEdge(NM, shapeID, prm);
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ else {
+ SMDS_MeshEdge* edge = meshDS->AddEdge(idPrev, idLast);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ }
+ else {
+ // Edge is a degenerated Edge : We put n = 5 points on the edge.
+ const int NbPoints = 5;
+ BRep_Tool::Range(E, f, l);
+ double du = (l - f) / (NbPoints - 1);
+ //MESSAGE("************* Degenerated edge! *****************");
+
+ TopoDS_Vertex V1, V2;
+ TopExp::Vertices(E, V1, V2);
+ gp_Pnt P = BRep_Tool::Pnt(V1);
+
+ const SMDS_MeshNode * idPrev = idFirst;
+ for (int i = 2; i < NbPoints; i++) {
+ double param = f + (i - 1) * du;
+ SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ if(_quadraticMesh) {
+ // create medium node
+ double prm = param - du/2.;
+ SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnEdge(NM, shapeID, prm);
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ else {
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ meshDS->SetNodeOnEdge(node, shapeID, param);
+ idPrev = node;
+ }
+ if(_quadraticMesh) {
+ // create medium node
+ double prm = l - du/2.;
+ SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
+ meshDS->SetNodeOnEdge(NM, shapeID, prm);
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ else {
+ SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast);
+ meshDS->SetMeshElementOnShape(edge, shapeID);
+ }
+ }
+ return true;
+}
+
+//=============================================================================
+/*!
+ * See comments in SMESH_Algo.cxx
+ */
+//=============================================================================
+
+const list <const SMESHDS_Hypothesis *> &
+StdMeshers_Regular_1D::GetUsedHypothesis(SMESH_Mesh & aMesh,
+ const TopoDS_Shape & aShape,
+ const bool ignoreAuxiliary)
+{
+ _usedHypList.clear();
+ _mainEdge.Nullify();
+
+ SMESH_HypoFilter auxiliaryFilter, compatibleFilter;
+ auxiliaryFilter.Init( SMESH_HypoFilter::IsAuxiliary() );
+ const bool ignoreAux = true;
+ InitCompatibleHypoFilter( compatibleFilter, ignoreAux );
+
+ // get non-auxiliary assigned to aShape
+ int nbHyp = aMesh.GetHypotheses( aShape, compatibleFilter, _usedHypList, false );
+
+ if (nbHyp == 0)
+ {
+ // Check, if propagated from some other edge
+ if (aShape.ShapeType() == TopAbs_EDGE &&
+ aMesh.IsPropagatedHypothesis(aShape, _mainEdge))
+ {
+ // Propagation of 1D hypothesis from <aMainEdge> on this edge;
+ // get non-auxiliary assigned to _mainEdge
+ nbHyp = aMesh.GetHypotheses( _mainEdge, compatibleFilter, _usedHypList, true );
+ }
+ }
+
+ if (nbHyp == 0) // nothing propagated nor assigned to aShape
+ {
+ SMESH_Algo::GetUsedHypothesis( aMesh, aShape, ignoreAuxiliary );
+ nbHyp = _usedHypList.size();
+ }
+ else
+ {
+ // get auxiliary hyps from aShape
+ aMesh.GetHypotheses( aShape, auxiliaryFilter, _usedHypList, true );
+ }
+ if ( nbHyp > 1 && ignoreAuxiliary )
+ _usedHypList.clear(); //only one compatible non-auxiliary hypothesis allowed
+
+ return _usedHypList;
}
//=============================================================================
