#include <SMESH_3D_Algo.hxx>

Inheritance diagram for SMESH_3D_Algo:

Public Member Functions
	SMESH_3D_Algo (int hypId, int studyId, SMESH_Gen *gen)
virtual	~SMESH_3D_Algo ()
virtual std::ostream &	SaveTo (std::ostream &save)
	Saves nothing in a stream.
virtual std::istream &	LoadFrom (std::istream &load)
	Loads nothing from a stream.
const std::vector< std::string > &	GetCompatibleHypothesis ()
	Returns all types of compatible hypotheses.
virtual bool	CheckHypothesis (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, SMESH_Hypothesis::Hypothesis_Status &aStatus)=0
	Check hypothesis definition to mesh a shape.
virtual bool	Compute (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape)=0
	Computes mesh on a shape.
virtual bool	Compute (SMESH_Mesh &aMesh, SMESH_MesherHelper *aHelper)
	Computes mesh without geometry.
virtual bool	Evaluate (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, MapShapeNbElems &aResMap)=0
	evaluates size of prospective mesh on a shape
virtual const std::list< const SMESHDS_Hypothesis * > &	GetUsedHypothesis (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, const bool ignoreAuxiliary=true)
	Returns a list of compatible hypotheses used to mesh a shape.
const list< const SMESHDS_Hypothesis * > &	GetAppliedHypothesis (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, const bool ignoreAuxiliary=true)
	Returns a list of compatible hypotheses assigned to a shape in a mesh.
bool	InitCompatibleHypoFilter (SMESH_HypoFilter &theFilter, const bool ignoreAuxiliary) const
	Make the filter recognize only compatible hypotheses.
virtual bool	SetParametersByMesh (const SMESH_Mesh *theMesh, const TopoDS_Shape &theShape)
	Just return false as the algorithm does not hold parameters values.
virtual bool	SetParametersByDefaults (const TDefaults &dflts, const SMESH_Mesh *theMesh=0)
SMESH_ComputeErrorPtr	GetComputeError () const
	return compute error
void	InitComputeError ()
	initialize compute error
bool	OnlyUnaryInput () const
bool	NeedDescretBoundary () const
bool	NeedShape () const
bool	SupportSubmeshes () const
virtual void	SetEventListener (SMESH_subMesh *subMesh)
	Sets event listener to submeshes if necessary.
virtual void	SubmeshRestored (SMESH_subMesh *subMesh)
	Allow algo to do something after persistent restoration.
Static Public Member Functions
static bool	GetNodeParamOnEdge (const SMESHDS_Mesh *theMesh, const TopoDS_Edge &theEdge, std::vector< double > &theParams)
	Fill vector of node parameters on geometrical edge, including vertex nodes.
static bool	GetSortedNodesOnEdge (const SMESHDS_Mesh theMesh, const TopoDS_Edge &theEdge, const bool ignoreMediumNodes, std::map< double, const SMDS_MeshNode > &theNodes)
	Fill map of node parameter on geometrical edge to node it-self.
static bool	IsReversedSubMesh (const TopoDS_Face &theFace, SMESHDS_Mesh *theMeshDS)
	Find out elements orientation on a geometrical face.
static double	EdgeLength (const TopoDS_Edge &E)
	Compute length of an edge.
static bool	FaceNormal (const SMDS_MeshElement *F, gp_XYZ &normal, bool normalized=true)
	Calculate normal of a mesh face.
static GeomAbs_Shape	Continuity (TopoDS_Edge E1, TopoDS_Edge E2)
	Return continuity of two edges.
static bool	IsContinuous (const TopoDS_Edge &E1, const TopoDS_Edge &E2)
	Return true if an edge can be considered as a continuation of another.
static const SMDS_MeshNode *	VertexNode (const TopoDS_Vertex &V, const SMESHDS_Mesh *meshDS)
	Return the node built on a vertex.
static std::vector< const SMDS_MeshNode * >	GetCommonNodes (const SMDS_MeshElement e1, const SMDS_MeshElement e2)
	Return nodes common to two elements.
Protected Member Functions
bool	error (int error, const SMESH_Comment &comment="")
	store error and comment and then return ( error == COMPERR_OK )
bool	error (const SMESH_Comment &comment="")
	store COMPERR_ALGO_FAILED error and comment and then return false
bool	error (SMESH_ComputeErrorPtr error)
	store error and return error->IsOK()
void	addBadInputElement (const SMDS_MeshElement *elem)
	store a bad input element preventing computation, which may be a temporary one i.e.
Protected Attributes
std::vector< std::string >	_compatibleHypothesis
std::list< const SMESHDS_Hypothesis * >	_appliedHypList
std::list< const SMESHDS_Hypothesis * >	_usedHypList
bool	_onlyUnaryInput
bool	_requireDescretBoundary
bool	_requireShape
bool	_supportSubmeshes
bool	_quadraticMesh
int	_error
	SMESH_ComputeErrorName or anything algo specific.
std::string	_comment
	any text explaining what is wrong in Compute()
std::list< const SMDS_MeshElement * >	_badInputElements
	to explain COMPERR_BAD_INPUT_MESH

Detailed Description

Definition at line 36 of file SMESH_3D_Algo.hxx.

Constructor & Destructor Documentation

SMESH_3D_Algo::SMESH_3D_Algo	(	int	hypId,
		int	studyId,
		SMESH_Gen *	gen
	)

Definition at line 42 of file SMESH_3D_Algo.cxx.

  : SMESH_Algo(hypId, studyId, gen)
{
//   _compatibleHypothesis.push_back("hypothese_3D_bidon");
  _type = ALGO_3D;
  gen->_map3D_Algo[hypId] = this;
}

SMESH_3D_Algo::~SMESH_3D_Algo ( ) [virtual]

Definition at line 56 of file SMESH_3D_Algo.cxx.

{
}

Member Function Documentation

void SMESH_Algo::addBadInputElement ( const SMDS_MeshElement * elem ) [protected, inherited]

store a bad input element preventing computation, which may be a temporary one i.e.

not residing the mesh, then it will be deleted by InitComputeError()

Definition at line 674 of file SMESH_Algo.cxx.

{
  if ( elem )
    _badInputElements.push_back( elem );
}

virtual bool SMESH_Algo.CheckHypothesis	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		SMESH_Hypothesis::Hypothesis_Status &	aStatus
	)		`[pure virtual, inherited]`

Check hypothesis definition to mesh a shape.

Parameters:

aMesh	- the mesh
aShape	- the shape
aStatus	- check result

Return values:

bool	- true if hypothesis is well defined

Implemented in StdMeshers_Hexa_3D, StdMeshers_Import_1D, StdMeshers_Import_1D2D, StdMeshers_MEFISTO_2D, StdMeshers_Prism_3D, StdMeshers_Projection_1D, StdMeshers_Projection_2D, StdMeshers_Projection_3D, StdMeshers_Quadrangle_2D, StdMeshers_RadialPrism_3D, StdMeshers_RadialQuadrangle_1D2D, StdMeshers_Regular_1D, StdMeshers_SegmentAroundVertex_0D, StdMeshers_UseExisting_2D, and StdMeshers_UseExisting_1D.

virtual bool SMESH_Algo.Compute	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape
	)		`[pure virtual, inherited]`

Computes mesh on a shape.

Parameters:

aMesh	- the mesh
aShape	- the shape

Return values:

bool	- is a success

Algorithms that !NeedDescretBoundary() || !OnlyUnaryInput() are to set SMESH_ComputeError returned by SMESH_submesh.GetComputeError() to report problematic subshapes

Implemented in StdMeshers_CompositeHexa_3D, StdMeshers_CompositeSegment_1D, StdMeshers_Hexa_3D, StdMeshers_HexaFromSkin_3D, StdMeshers_Import_1D, StdMeshers_Import_1D2D, StdMeshers_MEFISTO_2D, StdMeshers_Prism_3D, StdMeshers_Projection_1D, StdMeshers_Projection_2D, StdMeshers_Projection_3D, StdMeshers_Quadrangle_2D, StdMeshers_RadialPrism_3D, StdMeshers_RadialQuadrangle_1D2D, StdMeshers_Regular_1D, StdMeshers_SegmentAroundVertex_0D, StdMeshers_UseExisting_2D, and StdMeshers_UseExisting_1D.

virtual bool SMESH_Algo.Compute	(	SMESH_Mesh &	aMesh,
		SMESH_MesherHelper *	aHelper
	)		`[virtual, inherited]`

Computes mesh without geometry.

Parameters:

aMesh	- the mesh
aHelper	- helper that must be used for adding elements to

Return values:

bool	- is a success

The method is called if ( !aMesh->HasShapeToMesh() )

Reimplemented in StdMeshers_Hexa_3D, and StdMeshers_HexaFromSkin_3D.

GeomAbs_Shape SMESH_Algo::Continuity	(	TopoDS_Edge	E1,
		TopoDS_Edge	E2
	)		`[static, inherited]`

Return continuity of two edges.

Parameters:

E1	- the 1st edge
E2	- the 2nd edge

Return values:

GeomAbs_Shape - regularity at the junction between E1 and E2

Definition at line 494 of file SMESH_Algo.cxx.

References SMESH_AdvancedEditor.tol.

{
  //E1.Orientation(TopAbs_FORWARD), E2.Orientation(TopAbs_FORWARD); // avoid pb with internal edges
  if (E1.Orientation() > TopAbs_REVERSED) // INTERNAL
      E1.Orientation( TopAbs_FORWARD );
  if (E2.Orientation() > TopAbs_REVERSED) // INTERNAL
      E2.Orientation( TopAbs_FORWARD );
  TopoDS_Vertex V = TopExp::LastVertex (E1, true);
  if ( !V.IsSame( TopExp::FirstVertex(E2, true )))
    if ( !TopExp::CommonVertex( E1, E2, V ))
      return GeomAbs_C0;
  Standard_Real u1 = BRep_Tool::Parameter( V, E1 );
  Standard_Real u2 = BRep_Tool::Parameter( V, E2 );
  BRepAdaptor_Curve C1( E1 ), C2( E2 );
  Standard_Real tol = BRep_Tool::Tolerance( V );
  Standard_Real angTol = 2e-3;
  try {
#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
    OCC_CATCH_SIGNALS;
#endif
    return BRepLProp::Continuity(C1, C2, u1, u2, tol, angTol);
  }
  catch (Standard_Failure) {
  }
  return GeomAbs_C0;
}

double SMESH_Algo::EdgeLength ( const TopoDS_Edge & E ) [static, inherited]

Compute length of an edge.

Parameters:

E	- the edge

Return values:

double - the length

Definition at line 167 of file SMESH_Algo.cxx.

References Handle().

Referenced by StdMeshers_PrismAsBlock.Init().

{
  double UMin = 0, UMax = 0;
  if (BRep_Tool::Degenerated(E))
    return 0;
  TopLoc_Location L;
  Handle(Geom_Curve) C = BRep_Tool::Curve(E, L, UMin, UMax);
  GeomAdaptor_Curve AdaptCurve(C, UMin, UMax); //range is important for periodic curves
  double length = GCPnts_AbscissaPoint::Length(AdaptCurve, UMin, UMax);
  return length;
}

bool SMESH_Algo::error ( SMESH_ComputeErrorPtr error ) [protected, inherited]

store error and return error->IsOK()

store error and return ( error == COMPERR_OK )

Definition at line 623 of file SMESH_Algo.cxx.

{
  if ( error ) {
    _error   = error->myName;
    _comment = error->myComment;
    _badInputElements = error->myBadElements;
    return error->IsOK();
  }
  return true;
}

bool SMESH_Algo.error	(	int	error,
		const SMESH_Comment &	comment = `""`
	)		`[protected, inherited]`

store error and comment and then return ( error == COMPERR_OK )

Referenced by StdMeshers_Projection_3D.Compute(), StdMeshers_HexaFromSkin_3D.Compute(), StdMeshers_CompositeHexa_3D.Compute(), StdMeshers_Projection_3D.Evaluate(), and StdMeshers_HexaFromSkin_3D.Evaluate().

bool SMESH_Algo.error ( const SMESH_Comment & comment = "" ) [protected, inherited]

store COMPERR_ALGO_FAILED error and comment and then return false

Definition at line 340 of file SMESH_Algo.hxx.

References COMPERR_ALGO_FAILED, and SMESH_Algo.error().

Referenced by SMESH_Algo.error().

  { return error(COMPERR_ALGO_FAILED, comment); }

virtual bool SMESH_Algo.Evaluate	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		MapShapeNbElems &	aResMap
	)		`[pure virtual, inherited]`

evaluates size of prospective mesh on a shape

Parameters:

aMesh	- the mesh
aShape	- the shape
aNbElems	- prospective number of elements by types

Return values:

bool	- is a success

Implemented in StdMeshers_CompositeHexa_3D, StdMeshers_Hexa_3D, StdMeshers_HexaFromSkin_3D, StdMeshers_Import_1D, StdMeshers_Import_1D2D, StdMeshers_MEFISTO_2D, StdMeshers_Prism_3D, StdMeshers_Projection_1D, StdMeshers_Projection_2D, StdMeshers_Projection_3D, StdMeshers_Quadrangle_2D, StdMeshers_RadialPrism_3D, StdMeshers_RadialQuadrangle_1D2D, StdMeshers_Regular_1D, StdMeshers_SegmentAroundVertex_0D, StdMeshers_UseExisting_2D, and StdMeshers_UseExisting_1D.

bool SMESH_Algo::FaceNormal	(	const SMDS_MeshElement *	F,
		gp_XYZ &	normal,
		bool	normalized = `true`
	)		`[static, inherited]`

Calculate normal of a mesh face.

Definition at line 185 of file SMESH_Algo.cxx.

References SMDS_MeshElement.GetNode(), SMDS_MeshElement.GetType(), SMDS_MeshElement.IsQuadratic(), SMDS_MeshElement.NbNodes(), ex29_refine.node(), SMDSAbs_Face, SMDS_MeshNode.X(), SMDS_MeshNode.Y(), and SMDS_MeshNode.Z().

Referenced by SMESH_ElementSearcherImpl.findOuterBoundary(), and SMESH_ElementSearcherImpl.GetPointState().

{
  if ( !F || F->GetType() != SMDSAbs_Face )
    return false;

  normal.SetCoord(0,0,0);
  int nbNodes = F->IsQuadratic() ? F->NbNodes()/2 : F->NbNodes();
  for ( int i = 0; i < nbNodes-2; ++i )
  {
    gp_XYZ p[3];
    for ( int n = 0; n < 3; ++n )
    {
      const SMDS_MeshNode* node = F->GetNode( i + n );
      p[n].SetCoord( node->X(), node->Y(), node->Z() );
    }
    normal += ( p[2] - p[1] ) ^ ( p[0] - p[1] );
  }
  double size2 = normal.SquareModulus();
  bool ok = ( size2 > numeric_limits<double>::min() * numeric_limits<double>::min());
  if ( normalized && ok )
    normal /= sqrt( size2 );

  return ok;
}

const list< const SMESHDS_Hypothesis * > & SMESH_Algo::GetAppliedHypothesis	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		const bool	ignoreAuxiliary = `true`
	)		`[inherited]`

Returns a list of compatible hypotheses assigned to a shape in a mesh.

List the relevant hypothesis associated to the shape.

Parameters:

aMesh	- the mesh
aShape	- the shape
ignoreAuxiliary	- do not include auxiliary hypotheses in the list

Return values:

const std.list <const SMESHDS_Hypothesis*> - hypotheses list

List the relevant hypothesis associated to the shape. Relevant hypothesis have a name (type) listed in the algorithm. Hypothesis associated to father shape -are not- taken into account (see GetUsedHypothesis)

Relevant hypothesis have a name (type) listed in the algorithm. Hypothesis associated to father shape -are not- taken into account (see GetUsedHypothesis)

Definition at line 149 of file SMESH_Algo.cxx.

{
  _appliedHypList.clear();
  SMESH_HypoFilter filter;
  if ( InitCompatibleHypoFilter( filter, ignoreAuxiliary ))
    aMesh.GetHypotheses( aShape, filter, _appliedHypList, false );

  return _appliedHypList;
}

vector< const SMDS_MeshNode * > SMESH_Algo::GetCommonNodes	(	const SMDS_MeshElement *	e1,
		const SMDS_MeshElement *	e2
	)		`[static, inherited]`

Return nodes common to two elements.

Definition at line 547 of file SMESH_Algo.cxx.

References SMDS_MeshElement.GetNode(), SMDS_MeshElement.GetNodeIndex(), and SMDS_MeshElement.NbNodes().

Referenced by StdMeshers_QuadToTriaAdaptor.Compute2ndPart(), SMESH_MeshEditor.ConvertFromQuadratic(), and SMESH_ElementSearcherImpl.GetPointState().

{
  vector< const SMDS_MeshNode*> common;
  for ( int i = 0 ; i < e1->NbNodes(); ++i )
    if ( e2->GetNodeIndex( e1->GetNode( i )) >= 0 )
      common.push_back( e1->GetNode( i ));
  return common;
}

const std::vector< std::string >& SMESH_Algo.GetCompatibleHypothesis ( ) [inherited]

Returns all types of compatible hypotheses.

SMESH_ComputeErrorPtr SMESH_Algo.GetComputeError ( ) const [inherited]

return compute error

Referenced by StdMeshers_Hexa_3D.Compute().

bool SMESH_Algo::GetNodeParamOnEdge	(	const SMESHDS_Mesh *	theMesh,
		const TopoDS_Edge &	theEdge,
		std::vector< double > &	theParams
	)		`[static, inherited]`

Fill vector of node parameters on geometrical edge, including vertex nodes.

Parameters:

theMesh	- The mesh containing nodes
theEdge	- The geometrical edge of interest
theParams	- The resulting vector of sorted node parameters

Return values:

bool	- false if not all parameters are OK

Definition at line 343 of file SMESH_Algo.cxx.

References SMESHDS_SubMesh.GetElements(), SMESHDS_SubMesh.GetNodes(), SMDS_MeshNode.GetPosition(), SMDS_Position.GetTypeOfPosition(), SMDS_EdgePosition.GetUParameter(), SMESHDS_Mesh.MeshElements(), ex29_refine.node(), and SMDS_TOP_EDGE.

Referenced by StdMeshers_Arithmetic1D.SetParametersByMesh().

{
  theParams.clear();

  if ( !theMesh || theEdge.IsNull() )
    return false;

  SMESHDS_SubMesh * eSubMesh = theMesh->MeshElements( theEdge );
  if ( !eSubMesh || !eSubMesh->GetElements()->more() )
    return false; // edge is not meshed

  //int nbEdgeNodes = 0;
  set < double > paramSet;
  if ( eSubMesh )
  {
    // loop on nodes of an edge: sort them by param on edge
    SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
    while ( nIt->more() )
    {
      const SMDS_MeshNode* node = nIt->next();
      const SMDS_PositionPtr& pos = node->GetPosition();
      if ( pos->GetTypeOfPosition() != SMDS_TOP_EDGE )
        return false;
      const SMDS_EdgePosition* epos =
        static_cast<const SMDS_EdgePosition*>(node->GetPosition());
      if ( !paramSet.insert( epos->GetUParameter() ).second )
        return false; // equal parameters
    }
  }
  // add vertex nodes params
  TopoDS_Vertex V1,V2;
  TopExp::Vertices( theEdge, V1, V2);
  if ( VertexNode( V1, theMesh ) &&
       !paramSet.insert( BRep_Tool::Parameter(V1,theEdge) ).second )
    return false; // there are equal parameters
  if ( VertexNode( V2, theMesh ) &&
       !paramSet.insert( BRep_Tool::Parameter(V2,theEdge) ).second )
    return false; // there are equal parameters

  // fill the vector
  theParams.resize( paramSet.size() );
  set < double >::iterator   par    = paramSet.begin();
  vector< double >::iterator vecPar = theParams.begin();
  for ( ; par != paramSet.end(); ++par, ++vecPar )
    *vecPar = *par;

  return theParams.size() > 1;
}

bool SMESH_Algo::GetSortedNodesOnEdge	(	const SMESHDS_Mesh *	theMesh,
		const TopoDS_Edge &	theEdge,
		const bool	ignoreMediumNodes,
		std::map< double, const SMDS_MeshNode * > &	theNodes
	)		`[static, inherited]`

Fill map of node parameter on geometrical edge to node it-self.

Fill vector of node parameters on geometrical edge, including vertex nodes.

Parameters:

theMesh	- The mesh containing nodes
theEdge	- The geometrical edge of interest
theNodes	- The resulting map
ignoreMediumNodes	- to store medium nodes of quadratic elements or not

Return values:

bool	- false if not all parameters are OK

Parameters:

theMesh	- The mesh containing nodes
theEdge	- The geometrical edge of interest
theParams	- The resulting vector of sorted node parameters

Return values:

bool	- false if not all parameters are OK

Definition at line 404 of file SMESH_Algo.cxx.

References SMESHDS_SubMesh.GetElements(), SMDS_MeshNode.GetInverseElementIterator(), SMESHDS_SubMesh.GetNodes(), SMDS_MeshNode.GetPosition(), SMDS_Position.GetTypeOfPosition(), SMDS_EdgePosition.GetUParameter(), SMESHDS_Mesh.MeshElements(), SMESH_AdvancedEditor.n1, SMESH_AdvancedEditor.n2, ex29_refine.node(), and SMDS_TOP_EDGE.

Referenced by VISCOUS._ViscousBuilder.addBoundaryElements(), SMESH_MesherHelper.LoadNodeColumns(), and _FaceSide.StoreNodes().

{
  theNodes.clear();

  if ( !theMesh || theEdge.IsNull() )
    return false;

  SMESHDS_SubMesh * eSubMesh = theMesh->MeshElements( theEdge );
  if ( !eSubMesh || !eSubMesh->GetElements()->more() )
    return false; // edge is not meshed

  int nbNodes = 0;
  set < double > paramSet;
  if ( eSubMesh )
  {
    // loop on nodes of an edge: sort them by param on edge
    SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
    while ( nIt->more() )
    {
      const SMDS_MeshNode* node = nIt->next();
      if ( ignoreMediumNodes ) {
        SMDS_ElemIteratorPtr elemIt = node->GetInverseElementIterator();
        if ( elemIt->more() && elemIt->next()->IsMediumNode( node ))
          continue;
      }
      const SMDS_PositionPtr& pos = node->GetPosition();
      if ( pos->GetTypeOfPosition() != SMDS_TOP_EDGE )
        return false;
      const SMDS_EdgePosition* epos =
        static_cast<const SMDS_EdgePosition*>(node->GetPosition());
      theNodes.insert( make_pair( epos->GetUParameter(), node ));
      //MESSAGE("U " << epos->GetUParameter() << " ID " << node->GetID());
      ++nbNodes;
    }
  }
  // add vertex nodes
  TopoDS_Vertex v1, v2;
  TopExp::Vertices(theEdge, v1, v2);
  const SMDS_MeshNode* n1 = VertexNode( v1, (SMESHDS_Mesh*) theMesh );
  const SMDS_MeshNode* n2 = VertexNode( v2, (SMESHDS_Mesh*) theMesh );
  //MESSAGE("Vertices ID " << n1->GetID() << " " << n2->GetID());
  Standard_Real f, l;
  BRep_Tool::Range(theEdge, f, l);
  if ( v1.Orientation() != TopAbs_FORWARD )
    std::swap( f, l );
  if ( n1 && ++nbNodes )
    theNodes.insert( make_pair( f, n1 ));
  if ( n2 && ++nbNodes )
    theNodes.insert( make_pair( l, n2 ));

  return theNodes.size() == nbNodes;
}

virtual const std::list<const SMESHDS_Hypothesis *>& SMESH_Algo.GetUsedHypothesis	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		const bool	ignoreAuxiliary = `true`
	)		`[virtual, inherited]`

Returns a list of compatible hypotheses used to mesh a shape.

Parameters:

aMesh	- the mesh
aShape	- the shape
ignoreAuxiliary	- do not include auxiliary hypotheses in the list

Return values:

const std.list <const SMESHDS_Hypothesis*> - hypotheses list

List the hypothesis used by the algorithm associated to the shape. Hypothesis associated to father shape -are- taken into account (see GetAppliedHypothesis). Relevant hypothesis have a name (type) listed in the algorithm. This method could be surcharged by specific algorithms, in case of several hypothesis simultaneously applicable.

Reimplemented in StdMeshers_Regular_1D.

Referenced by StdMeshers_SegmentAroundVertex_0D.CheckHypothesis(), and StdMeshers_Projection_3D.CheckHypothesis().

bool SMESH_Algo::InitCompatibleHypoFilter	(	SMESH_HypoFilter &	theFilter,
		const bool	ignoreAuxiliary
	)		const `[inherited]`

Make the filter recognize only compatible hypotheses.

Make filter recognize only compatible hypotheses.

Parameters:

theFilter	- the filter to initialize
ignoreAuxiliary	- make filter ignore compatible auxiliary hypotheses

Return values:

bool	- true if the algo has compatible hypotheses

Parameters:

theFilter	- the filter to initialize
ignoreAuxiliary	- make filter ignore compatible auxiliary hypotheses

Definition at line 468 of file SMESH_Algo.cxx.

References SMESH_HypoFilter.AndNot(), SMESH_HypoFilter.HasName(), SMESH_HypoFilter.Init(), SMESH_HypoFilter.IsAuxiliary(), and SMESH_HypoFilter.Or().

{
  if ( !_compatibleHypothesis.empty() )
  {
    theFilter.Init( theFilter.HasName( _compatibleHypothesis[0] ));
    for ( int i = 1; i < _compatibleHypothesis.size(); ++i )
      theFilter.Or( theFilter.HasName( _compatibleHypothesis[ i ] ));

    if ( ignoreAuxiliary )
      theFilter.AndNot( theFilter.IsAuxiliary() );

    return true;
  }
  return false;
}

void SMESH_Algo::InitComputeError ( ) [inherited]

initialize compute error

Definition at line 655 of file SMESH_Algo.cxx.

References COMPERR_OK.

Referenced by StdMeshers_Hexa_3D.Compute().

{
  _error = COMPERR_OK;
  _comment.clear();
  list<const SMDS_MeshElement*>::iterator elem = _badInputElements.begin();
  for ( ; elem != _badInputElements.end(); ++elem )
    if ( (*elem)->GetID() < 1 )
      delete *elem;
  _badInputElements.clear();
}

static bool SMESH_Algo.IsContinuous	(	const TopoDS_Edge &	E1,
		const TopoDS_Edge &	E2
	)		`[static, inherited]`

Return true if an edge can be considered as a continuation of another.

Definition at line 313 of file SMESH_Algo.hxx.

Referenced by StdMeshers_Quadrangle_2D.CheckNbEdges(), StdMeshers_Quadrangle_2D.CheckNbEdgesForEvaluate(), and _QuadFaceGrid.Init().

                                                                           {
    return ( Continuity( E1, E2 ) >= GeomAbs_G1 );
  }

bool SMESH_Algo::IsReversedSubMesh	(	const TopoDS_Face &	theFace,
		SMESHDS_Mesh *	theMeshDS
	)		`[static, inherited]`

Find out elements orientation on a geometrical face.

Parameters:

theFace	- The face correctly oriented in the shape being meshed
theMeshDS	- The mesh data structure

Return values:

bool	- true if the face normal and the normal of first element in the correspoding submesh point in different directions

Definition at line 220 of file SMESH_Algo.cxx.

References SMESHDS_SubMesh.GetElements(), SMDS_MeshNode.GetPosition(), SMDS_MeshElement.getshapeId(), SMDS_Position.GetTypeOfPosition(), SMDS_FacePosition.GetUParameter(), SMDS_FacePosition.GetVParameter(), Handle(), SMESHDS_Mesh.IndexToShape(), SMESHDS_Mesh.MeshElements(), SMDS_MeshElement.NbNodes(), ex29_refine.node(), SMDS_MeshElement.nodesIterator(), SMESHDS_Mesh.ShapeToIndex(), SMDS_TOP_FACE, SMDS_TOP_VERTEX, SMDS_MeshNode.X(), SMDS_MeshNode.Y(), and SMDS_MeshNode.Z().

Referenced by StdMeshers_QuadToTriaAdaptor.Compute(), and VISCOUS._ViscousBuilder.findFacesWithLayers().

{
  if ( theFace.IsNull() || !theMeshDS )
    return false;

  // find out orientation of a meshed face
  int faceID = theMeshDS->ShapeToIndex( theFace );
  TopoDS_Shape aMeshedFace = theMeshDS->IndexToShape( faceID );
  bool isReversed = ( theFace.Orientation() != aMeshedFace.Orientation() );

  const SMESHDS_SubMesh * aSubMeshDSFace = theMeshDS->MeshElements( faceID );
  if ( !aSubMeshDSFace )
    return isReversed;

  // find element with node located on face and get its normal
  const SMDS_FacePosition* facePos = 0;
  int vertexID = 0;
  gp_Pnt nPnt[3];
  gp_Vec Ne;
  bool normalOK = false;
  SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
  while ( iteratorElem->more() ) // loop on elements on theFace
  {
    const SMDS_MeshElement* elem = iteratorElem->next();
    if ( elem && elem->NbNodes() > 2 ) {
      SMDS_ElemIteratorPtr nodesIt = elem->nodesIterator();
      const SMDS_FacePosition* fPos = 0;
      int i = 0, vID = 0;
      while ( nodesIt->more() ) { // loop on nodes
        const SMDS_MeshNode* node
          = static_cast<const SMDS_MeshNode *>(nodesIt->next());
        if ( i == 3 ) i = 2;
        nPnt[ i++ ].SetCoord( node->X(), node->Y(), node->Z() );
        // check position
        const SMDS_PositionPtr& pos = node->GetPosition();
        if ( !pos ) continue;
        if ( pos->GetTypeOfPosition() == SMDS_TOP_FACE ) {
          fPos = dynamic_cast< const SMDS_FacePosition* >( pos );
        }
        else if ( pos->GetTypeOfPosition() == SMDS_TOP_VERTEX ) {
          vID = node->getshapeId();
        }
      }
      if ( fPos || ( !normalOK && vID )) {
        // compute normal
        gp_Vec v01( nPnt[0], nPnt[1] ), v02( nPnt[0], nPnt[2] );
        if ( v01.SquareMagnitude() > RealSmall() &&
             v02.SquareMagnitude() > RealSmall() )
        {
          Ne = v01 ^ v02;
          normalOK = ( Ne.SquareMagnitude() > RealSmall() );
        }
        // we need position on theFace or at least on vertex
        if ( normalOK ) {
          vertexID = vID;
          if ((facePos = fPos))
            break;
        }
      }
    }
  }
  if ( !normalOK )
    return isReversed;

  // node position on face
  double u,v;
  if ( facePos ) {
    u = facePos->GetUParameter();
    v = facePos->GetVParameter();
  }
  else if ( vertexID ) {
    TopoDS_Shape V = theMeshDS->IndexToShape( vertexID );
    if ( V.IsNull() || V.ShapeType() != TopAbs_VERTEX )
      return isReversed;
    gp_Pnt2d uv = BRep_Tool::Parameters( TopoDS::Vertex( V ), theFace );
    u = uv.X();
    v = uv.Y();
  }
  else
  {
    return isReversed;
  }

  // face normal at node position
  TopLoc_Location loc;
  Handle(Geom_Surface) surf = BRep_Tool::Surface( theFace, loc );
  if ( surf.IsNull() || surf->Continuity() < GeomAbs_C1 ) return isReversed;
  gp_Vec d1u, d1v;
  surf->D1( u, v, nPnt[0], d1u, d1v );
  gp_Vec Nf = (d1u ^ d1v).Transformed( loc );

  if ( theFace.Orientation() == TopAbs_REVERSED )
    Nf.Reverse();

  return Ne * Nf < 0.;
}

virtual std::istream& SMESH_Algo.LoadFrom ( std::istream & load ) [virtual, inherited]

Loads nothing from a stream.

Parameters:

load	- the stream

Return values:

std.ostream & - the stream

bool SMESH_Algo.NeedDescretBoundary ( ) const [inherited]

Definition at line 222 of file SMESH_Algo.hxx.

{ return _requireDescretBoundary; }

bool SMESH_Algo.NeedShape ( ) const [inherited]

Definition at line 225 of file SMESH_Algo.hxx.

{ return _requireShape; }

bool SMESH_Algo.OnlyUnaryInput ( ) const [inherited]

Definition at line 214 of file SMESH_Algo.hxx.

{ return _onlyUnaryInput; }

virtual std::ostream& SMESH_Algo.SaveTo ( std::ostream & save ) [virtual, inherited]

Saves nothing in a stream.

Parameters:

save	- the stream

Return values:

std.ostream & - the stream

virtual void SMESH_Algo.SetEventListener ( SMESH_subMesh * subMesh ) [virtual, inherited]

Sets event listener to submeshes if necessary.

Parameters:

subMesh - submesh where algo is set

This method is called when a submesh gets HYP_OK algo_state. After being set, event listener is notified on each event of a submesh. By default none listener is set

Reimplemented in StdMeshers_CompositeSegment_1D, StdMeshers_Import_1D, StdMeshers_Import_1D2D, StdMeshers_Projection_1D, StdMeshers_Projection_2D, StdMeshers_Projection_3D, and StdMeshers_Regular_1D.

virtual bool SMESH_Algo.SetParametersByDefaults	(	const TDefaults &	dflts,
		const SMESH_Mesh *	theMesh = `0`
	)		`[virtual, inherited]`

virtual bool SMESH_Algo.SetParametersByMesh	(	const SMESH_Mesh *	theMesh,
		const TopoDS_Shape &	theShape
	)		`[virtual, inherited]`

Just return false as the algorithm does not hold parameters values.

virtual void SMESH_Algo.SubmeshRestored ( SMESH_subMesh * subMesh ) [virtual, inherited]

Allow algo to do something after persistent restoration.

Parameters:

subMesh - restored submesh

This method is called only if a submesh has HYP_OK algo_state.

Reimplemented in StdMeshers_Import_1D, StdMeshers_Import_1D2D, StdMeshers_RadialQuadrangle_1D2D, and StdMeshers_Regular_1D.

bool SMESH_Algo.SupportSubmeshes ( ) const [inherited]

Definition at line 228 of file SMESH_Algo.hxx.

{ return _supportSubmeshes; }

const SMDS_MeshNode * SMESH_Algo::VertexNode	(	const TopoDS_Vertex &	V,
		const SMESHDS_Mesh *	meshDS
	)		`[static, inherited]`

Return the node built on a vertex.

Parameters:

V	- the vertex
meshDS	- mesh

Return values:

const SMDS_MeshNode* - found node or NULL

Definition at line 531 of file SMESH_Algo.cxx.

References SMESHDS_Mesh.MeshElements().

Referenced by SMESH.SMESH_Gen.Compute(), StdMeshers_ProjectionUtils.FindMatchingNodesOnFaces(), StdMeshers_FaceSide.GetFaceWires(), and StdMeshers_FaceSide.GetUVPtStruct().

{
  if ( SMESHDS_SubMesh* sm = meshDS->MeshElements(V) ) {
    SMDS_NodeIteratorPtr nIt= sm->GetNodes();
    if (nIt->more())
      return nIt->next();
  }
  return 0;
}