X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FSMESH%2FSMESH_Algo.cxx;h=98e8af4691b3b2f2b5afc5a69591cdffc01c91cf;hb=43db13f33a1d75fae36db8f06fa378ed7906a332;hp=45e0e234a4161383279730585dc1f98ef44b1af7;hpb=c63ee099ad2b149bd70136839c973e8910137bc5;p=modules%2Fsmesh.git diff --git a/src/SMESH/SMESH_Algo.cxx b/src/SMESH/SMESH_Algo.cxx index 45e0e234a..98e8af469 100644 --- a/src/SMESH/SMESH_Algo.cxx +++ b/src/SMESH/SMESH_Algo.cxx @@ -1,59 +1,74 @@ -// SMESH SMESH : implementaion of SMESH idl descriptions +// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE // -// Copyright (C) 2003 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 +// 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 +// + +// SMESH SMESH : implementaion of SMESH idl descriptions // File : SMESH_Algo.cxx // Author : Paul RASCLE, EDF // Module : SMESH -// $Header$ -using namespace std; #include "SMESH_Algo.hxx" -#include "SMESH_Gen.hxx" -#include "SMESH_Mesh.hxx" -#include "SMESH_HypoFilter.hxx" -#include "SMDS_FacePosition.hxx" + #include "SMDS_EdgePosition.hxx" +#include "SMDS_FacePosition.hxx" #include "SMDS_MeshElement.hxx" #include "SMDS_MeshNode.hxx" +#include "SMDS_VolumeTool.hxx" #include "SMESHDS_Mesh.hxx" #include "SMESHDS_SubMesh.hxx" +#include "SMESH_Comment.hxx" +#include "SMESH_Gen.hxx" +#include "SMESH_HypoFilter.hxx" +#include "SMESH_Mesh.hxx" +#include "SMESH_TypeDefs.hxx" +#include + +#include +#include #include #include #include #include +#include #include #include #include #include +#include #include +#include #include #include #include +#include +#include + #include "utilities.h" #include +#include + +using namespace std; //============================================================================= /*! @@ -61,15 +76,14 @@ using namespace std; */ //============================================================================= -SMESH_Algo::SMESH_Algo(int hypId, int studyId, - SMESH_Gen * gen):SMESH_Hypothesis(hypId, studyId, gen) +SMESH_Algo::SMESH_Algo (int hypId, int studyId, SMESH_Gen * gen) + : SMESH_Hypothesis(hypId, studyId, gen) { -// _compatibleHypothesis.push_back("hypothese_bidon"); - _type = ALGO; - gen->_mapAlgo[hypId] = this; + gen->_mapAlgo[hypId] = this; - _onlyUnaryInput = _requireDescretBoundary = true; - _quadraticMesh = false; + _onlyUnaryInput = _requireDiscreteBoundary = _requireShape = true; + _quadraticMesh = _supportSubmeshes = false; + _error = COMPERR_OK; } //============================================================================= @@ -82,6 +96,15 @@ SMESH_Algo::~SMESH_Algo() { } +//============================================================================= +/*! + * Usually an algoritm has nothing to save + */ +//============================================================================= + +ostream & SMESH_Algo::SaveTo(ostream & save) { return save; } +istream & SMESH_Algo::LoadFrom(istream & load) { return load; } + //============================================================================= /*! * @@ -90,7 +113,7 @@ SMESH_Algo::~SMESH_Algo() const vector < string > &SMESH_Algo::GetCompatibleHypothesis() { - return _compatibleHypothesis; + return _compatibleHypothesis; } //============================================================================= @@ -114,7 +137,7 @@ SMESH_Algo::GetUsedHypothesis(SMESH_Mesh & aMesh, { aMesh.GetHypotheses( aShape, filter, _usedHypList, true ); if ( ignoreAuxiliary && _usedHypList.size() > 1 ) - _usedHypList.clear(); //only one compatible hypothesis allowed + _usedHypList.clear(); //only one compatible hypothesis allowed } return _usedHypList; } @@ -153,12 +176,42 @@ double SMESH_Algo::EdgeLength(const TopoDS_Edge & E) return 0; TopLoc_Location L; Handle(Geom_Curve) C = BRep_Tool::Curve(E, L, UMin, UMax); - GeomAdaptor_Curve AdaptCurve(C); - GCPnts_AbscissaPoint gabs; - double length = gabs.Length(AdaptCurve, UMin, UMax); + GeomAdaptor_Curve AdaptCurve(C, UMin, UMax); //range is important for periodic curves + double length = GCPnts_AbscissaPoint::Length(AdaptCurve, UMin, UMax); return length; } +//================================================================================ +/*! + * \brief Calculate normal of a mesh face + */ +//================================================================================ + +bool SMESH_Algo::FaceNormal(const SMDS_MeshElement* F, gp_XYZ& normal, bool normalized) +{ + 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::min() * numeric_limits::min()); + if ( normalized && ok ) + normal /= sqrt( size2 ); + + return ok; +} + //================================================================================ /*! * \brief Find out elements orientation on a geometrical face @@ -207,10 +260,10 @@ bool SMESH_Algo::IsReversedSubMesh (const TopoDS_Face& theFace, const SMDS_PositionPtr& pos = node->GetPosition(); if ( !pos ) continue; if ( pos->GetTypeOfPosition() == SMDS_TOP_FACE ) { - fPos = dynamic_cast< const SMDS_FacePosition* >( pos.get() ); + fPos = dynamic_cast< const SMDS_FacePosition* >( pos ); } else if ( pos->GetTypeOfPosition() == SMDS_TOP_VERTEX ) { - vID = pos->GetShapeId(); + vID = node->getshapeId(); } } if ( fPos || ( !normalOK && vID )) { @@ -269,12 +322,7 @@ bool SMESH_Algo::IsReversedSubMesh (const TopoDS_Face& theFace, //================================================================================ /*! - * \brief Initialize my parameter values by the mesh built on the geometry - * \param theMesh - the built mesh - * \param theShape - the geometry of interest - * \retval bool - true if parameter values have been successfully defined - * - * Just return false as the algorithm does not hold parameters values + * \brief Just return false as the algorithm does not hold parameters values */ //================================================================================ @@ -283,7 +331,10 @@ bool SMESH_Algo::SetParametersByMesh(const SMESH_Mesh* /*theMesh*/, { return false; } - +bool SMESH_Algo::SetParametersByDefaults(const TDefaults& , const SMESH_Mesh*) +{ + return false; +} //================================================================================ /*! * \brief Fill vector of node parameters on geometrical edge, including vertex nodes @@ -307,7 +358,7 @@ bool SMESH_Algo::GetNodeParamOnEdge(const SMESHDS_Mesh* theMesh, if ( !eSubMesh || !eSubMesh->GetElements()->more() ) return false; // edge is not meshed - int nbEdgeNodes = 0; + //int nbEdgeNodes = 0; set < double > paramSet; if ( eSubMesh ) { @@ -320,17 +371,19 @@ bool SMESH_Algo::GetNodeParamOnEdge(const SMESHDS_Mesh* theMesh, if ( pos->GetTypeOfPosition() != SMDS_TOP_EDGE ) return false; const SMDS_EdgePosition* epos = - static_cast(node->GetPosition().get()); - paramSet.insert( epos->GetUParameter() ); - ++nbEdgeNodes; + static_cast(node->GetPosition()); + if ( !paramSet.insert( epos->GetUParameter() ).second ) + return false; // equal parameters } } // add vertex nodes params - Standard_Real f, l; - BRep_Tool::Range(theEdge, f, l); - paramSet.insert( f ); - paramSet.insert( l ); - if ( paramSet.size() != nbEdgeNodes + 2 ) + 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 @@ -343,6 +396,72 @@ bool SMESH_Algo::GetNodeParamOnEdge(const SMESHDS_Mesh* theMesh, return theParams.size() > 1; } +//================================================================================ +/*! + * \brief Fill vector of node parameters on geometrical edge, including vertex nodes + * \param theMesh - The mesh containing nodes + * \param theEdge - The geometrical edge of interest + * \param theParams - The resulting vector of sorted node parameters + * \retval bool - false if not all parameters are OK + */ +//================================================================================ + +bool SMESH_Algo::GetSortedNodesOnEdge(const SMESHDS_Mesh* theMesh, + const TopoDS_Edge& theEdge, + const bool ignoreMediumNodes, + map< double, const SMDS_MeshNode* > & theNodes) +{ + 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(node->GetPosition()); + theNodes.insert( theNodes.end(), 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; +} + //================================================================================ /*! * \brief Make filter recognize only compatible hypotheses @@ -367,3 +486,280 @@ bool SMESH_Algo::InitCompatibleHypoFilter( SMESH_HypoFilter & theFilter, } return false; } + +//================================================================================ +/*! + * \brief Return continuity of two edges + * \param E1 - the 1st edge + * \param E2 - the 2nd edge + * \retval GeomAbs_Shape - regularity at the junction between E1 and E2 + */ +//================================================================================ + +GeomAbs_Shape SMESH_Algo::Continuity(TopoDS_Edge E1, + TopoDS_Edge E2) +{ + //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_LARGE > 0x06010000 + OCC_CATCH_SIGNALS; +#endif + return BRepLProp::Continuity(C1, C2, u1, u2, tol, angTol); + } + catch (Standard_Failure) { + } + return GeomAbs_C0; +} + +//================================================================================ +/*! + * \brief Return the node built on a vertex + * \param V - the vertex + * \param meshDS - mesh + * \retval const SMDS_MeshNode* - found node or NULL + */ +//================================================================================ + +const SMDS_MeshNode* SMESH_Algo::VertexNode(const TopoDS_Vertex& V, + const SMESHDS_Mesh* meshDS) +{ + if ( SMESHDS_SubMesh* sm = meshDS->MeshElements(V) ) { + SMDS_NodeIteratorPtr nIt= sm->GetNodes(); + if (nIt->more()) + return nIt->next(); + } + return 0; +} + +//======================================================================= +//function : GetCommonNodes +//purpose : Return nodes common to two elements +//======================================================================= + +vector< const SMDS_MeshNode*> SMESH_Algo::GetCommonNodes(const SMDS_MeshElement* e1, + const SMDS_MeshElement* e2) +{ + 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; +} + +//======================================================================= +//function : GetMeshError +//purpose : Finds topological errors of a sub-mesh +//WARNING : 1D check is NOT implemented so far +//======================================================================= + +SMESH_Algo::EMeshError SMESH_Algo::GetMeshError(SMESH_subMesh* subMesh) +{ + EMeshError err = MEr_OK; + + SMESHDS_SubMesh* smDS = subMesh->GetSubMeshDS(); + if ( !smDS ) + return MEr_EMPTY; + + switch ( subMesh->GetSubShape().ShapeType() ) + { + case TopAbs_FACE: { // ====================== 2D ===================== + + SMDS_ElemIteratorPtr fIt = smDS->GetElements(); + if ( !fIt->more() ) + return MEr_EMPTY; + + // We check that olny links on EDGEs encouter once, the rest links, twice + set< SMESH_TLink > links; + while ( fIt->more() ) + { + const SMDS_MeshElement* f = fIt->next(); + int nbNodes = f->NbCornerNodes(); // ignore medium nodes + for ( int i = 0; i < nbNodes; ++i ) + { + const SMDS_MeshNode* n1 = f->GetNode( i ); + const SMDS_MeshNode* n2 = f->GetNode(( i+1 ) % nbNodes); + std::pair< set< SMESH_TLink >::iterator, bool > it_added = + links.insert( SMESH_TLink( n1, n2 )); + if ( !it_added.second ) + // As we do NOT(!) check if mesh is manifold, we believe that a link can + // encounter once or twice only (not three times), we erase a link as soon + // as it encounters twice to speed up search in the map. + links.erase( it_added.first ); + } + } + // the links remaining in the should all be on EDGE + set< SMESH_TLink >::iterator linkIt = links.begin(); + for ( ; linkIt != links.end(); ++linkIt ) + { + const SMESH_TLink& link = *linkIt; + if ( link.node1()->GetPosition()->GetTypeOfPosition() > SMDS_TOP_EDGE || + link.node2()->GetPosition()->GetTypeOfPosition() > SMDS_TOP_EDGE ) + return MEr_HOLES; + } + // TODO: to check orientation + break; + } + case TopAbs_SOLID: { // ====================== 3D ===================== + + SMDS_ElemIteratorPtr vIt = smDS->GetElements(); + if ( !vIt->more() ) + return MEr_EMPTY; + + SMDS_VolumeTool vTool; + while ( !vIt->more() ) + { + if (!vTool.Set( vIt->next() )) + continue; // strange + + for ( int iF = 0; iF < vTool.NbFaces(); ++iF ) + if ( vTool.IsFreeFace( iF )) + { + int nbN = vTool.NbFaceNodes( iF ); + const SMDS_MeshNode** nodes = vTool.GetFaceNodes( iF ); + for ( int i = 0; i < nbN; ++i ) + if ( nodes[i]->GetPosition()->GetTypeOfPosition() > SMDS_TOP_FACE ) + return MEr_HOLES; + } + } + break; + } + default:; + } + return err; +} + +//================================================================================ +/*! + * \brief Sets event listener to submeshes if necessary + * \param subMesh - submesh where algo is set + * + * After being set, event listener is notified on each event of a submesh. + * By default non listener is set + */ +//================================================================================ + +void SMESH_Algo::SetEventListener(SMESH_subMesh* /*subMesh*/) +{ +} + +//================================================================================ +/*! + * \brief Allow algo to do something after persistent restoration + * \param subMesh - restored submesh + * + * This method is called only if a submesh has HYP_OK algo_state. + */ +//================================================================================ + +void SMESH_Algo::SubmeshRestored(SMESH_subMesh* /*subMesh*/) +{ +} + +//================================================================================ +/*! + * \brief Computes mesh without geometry + * \param aMesh - the mesh + * \param aHelper - helper that must be used for adding elements to \aaMesh + * \retval bool - is a success + */ +//================================================================================ + +bool SMESH_Algo::Compute(SMESH_Mesh & /*aMesh*/, SMESH_MesherHelper* /*aHelper*/) +{ + return error( COMPERR_BAD_INPUT_MESH, "Mesh built on shape expected"); +} + +#ifdef WITH_SMESH_CANCEL_COMPUTE +void SMESH_Algo::CancelCompute() +{ +} +#endif + +//================================================================================ +/*! + * \brief store error and comment and then return ( error == COMPERR_OK ) + */ +//================================================================================ + +bool SMESH_Algo::error(int error, const SMESH_Comment& comment) +{ + _error = error; + _comment = comment; + return ( error == COMPERR_OK ); +} + +//================================================================================ +/*! + * \brief store error and return ( error == COMPERR_OK ) + */ +//================================================================================ + +bool SMESH_Algo::error(SMESH_ComputeErrorPtr error) +{ + if ( error ) { + _error = error->myName; + _comment = error->myComment; + _badInputElements = error->myBadElements; + return error->IsOK(); + } + return true; +} + +//================================================================================ +/*! + * \brief return compute error + */ +//================================================================================ + +SMESH_ComputeErrorPtr SMESH_Algo::GetComputeError() const +{ + SMESH_ComputeErrorPtr err = SMESH_ComputeError::New( _error, _comment, this ); + // hope this method is called by only SMESH_subMesh after this->Compute() + err->myBadElements.splice( err->myBadElements.end(), + (list&) _badInputElements ); + return err; +} + +//================================================================================ +/*! + * \brief initialize compute error + */ +//================================================================================ + +void SMESH_Algo::InitComputeError() +{ + _error = COMPERR_OK; + _comment.clear(); + list::iterator elem = _badInputElements.begin(); + for ( ; elem != _badInputElements.end(); ++elem ) + if ( (*elem)->GetID() < 1 ) + delete *elem; + _badInputElements.clear(); +} + +//================================================================================ +/*! + * \brief 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() + */ +//================================================================================ + +void SMESH_Algo::addBadInputElement(const SMDS_MeshElement* elem) +{ + if ( elem ) + _badInputElements.push_back( elem ); +}