BOTTOM_EDGE = 0, TOP_EDGE, V0_EDGE, V1_EDGE, // edge IDs in face
NB_WALL_FACES = 4 }; //
-namespace {
-
+namespace
+{
+ //=======================================================================
+ /*!
+ * \brief Auxiliary mesh
+ */
+ struct TmpMesh: public SMESH_Mesh
+ {
+ TmpMesh() {
+ _isShapeToMesh = (_id = 0);
+ _myMeshDS = new SMESHDS_Mesh( _id, true );
+ }
+ };
//=======================================================================
/*!
* \brief Quadrangle algorithm
*/
- struct TQuadrangleAlgo : public StdMeshers_Quadrangle_2D
+ class TQuadrangleAlgo : public StdMeshers_Quadrangle_2D
{
+ typedef NCollection_DataMap< TopoDS_Face, FaceQuadStruct::Ptr > TFace2QuadMap;
+ TFace2QuadMap myFace2QuadMap;
+
TQuadrangleAlgo(SMESH_Gen* gen)
: StdMeshers_Quadrangle_2D( gen->GetANewId(), gen)
{
}
- static StdMeshers_Quadrangle_2D* instance( SMESH_Algo* fatherAlgo,
- SMESH_MesherHelper* helper=0)
+ public:
+
+ //================================================================================
+ // Clear data of TQuadrangleAlgo at destruction
+ struct Cleaner
+ {
+ TQuadrangleAlgo* myAlgo;
+
+ Cleaner(TQuadrangleAlgo* algo): myAlgo( algo ){}
+ ~Cleaner() { myAlgo->reset(); }
+ };
+
+ //================================================================================
+ // Return TQuadrangleAlgo singleton
+ static TQuadrangleAlgo* instance( SMESH_Algo* fatherAlgo,
+ SMESH_MesherHelper* helper=0)
{
static TQuadrangleAlgo* algo = new TQuadrangleAlgo( fatherAlgo->GetGen() );
if ( helper &&
return algo;
}
+
+ //================================================================================
+ // Clear collected data
+ void reset()
+ {
+ myFace2QuadMap.Clear();
+ StdMeshers_Quadrangle_2D::myQuadList.clear();
+ StdMeshers_Quadrangle_2D::myHelper = nullptr;
+ }
+
+ //================================================================================
+ /*!
+ * \brief Return FaceQuadStruct if a given FACE can be meshed by StdMeshers_Quadrangle_2D
+ */
+ FaceQuadStruct::Ptr CheckNbEdges(SMESH_Mesh& theMesh,
+ const TopoDS_Shape& theShape )
+ {
+ const TopoDS_Face& face = TopoDS::Face( theShape );
+ if ( myFace2QuadMap.IsBound( face ))
+ return myFace2QuadMap.Find( face );
+
+ FaceQuadStruct::Ptr & resultQuad = * myFace2QuadMap.Bound( face, FaceQuadStruct::Ptr() );
+
+ FaceQuadStruct::Ptr quad =
+ StdMeshers_Quadrangle_2D::CheckNbEdges( theMesh, face, /*considerMesh=*/false, myHelper );
+ if ( quad )
+ {
+ // check if the quadrangle mesh would be valid
+
+ // check existing 1D mesh
+ // int nbSegments[4], i = 0;
+ // for ( FaceQuadStruct::Side & side : quad->side )
+ // nbSegments[ i++ ] = side.grid->NbSegments();
+ // if ( nbSegments[0] > 0 && nbSegments[2] > 0 && nbSegments[0] != nbSegments[2] ||
+ // nbSegments[1] > 0 && nbSegments[3] > 0 && nbSegments[1] != nbSegments[3] )
+ // return resultQuad;
+
+ int nbEdges = 0;
+ for ( FaceQuadStruct::Side & side : quad->side )
+ nbEdges += side.grid->NbEdges();
+ if ( nbEdges == 4 )
+ return resultQuad = quad;
+
+ TmpMesh mesh;
+ mesh.ShapeToMesh( face );
+ SMESHDS_Mesh* meshDS = mesh.GetMeshDS();
+ SMESH_MesherHelper helper( mesh );
+ helper.SetSubShape( face );
+ helper.SetElementsOnShape( true );
+
+ // create nodes on all VERTEX'es
+ for ( TopExp_Explorer vert( face, TopAbs_VERTEX ); vert.More(); vert.Next() )
+ mesh.GetSubMesh( vert.Current() )->ComputeStateEngine( SMESH_subMesh::COMPUTE );
+
+ FaceQuadStruct::Ptr tmpQuad( new FaceQuadStruct() );
+ tmpQuad->side.resize( 4 );
+
+ // divide quad sides into halves at least
+ const SMDS_MeshNode* node;
+ for ( int iDir = 0; iDir < 2; ++iDir )
+ {
+ StdMeshers_FaceSidePtr sides[2] = { quad->side[iDir], quad->side[iDir+2] };
+ std::map< double, const SMDS_MeshNode* > nodes[2];
+ for ( int iS : { 0, 1 } )
+ {
+ node = SMESH_Algo::VertexNode( sides[iS]->FirstVertex(), meshDS );
+ nodes[iS].insert( std::make_pair( 0, node ));
+ double curLen = 0;
+ for ( int iE = 1; iE < sides[iS]->NbEdges(); ++iE )
+ {
+ curLen += sides[iS]->EdgeLength( iE - 1 );
+ double u = curLen / sides[iS]->Length();
+ node = SMESH_Algo::VertexNode( sides[iS]->FirstVertex( iE ), meshDS );
+ nodes[iS ].insert( std::make_pair( u, node ));
+ nodes[1-iS].insert( std::make_pair( u, nullptr ));
+ }
+ nodes[iS].insert( std::make_pair( 0.5, nullptr ));
+ node = SMESH_Algo::VertexNode( sides[iS]->LastVertex(), meshDS );
+ nodes[iS].insert( std::make_pair( 1, node ));
+ }
+
+ for ( int iS : { 0, 1 } )
+ {
+ UVPtStructVec sideNodes;
+ sideNodes.reserve( nodes[ iS ].size() );
+ for ( auto & u_node : nodes[ iS ])
+ {
+ if ( !u_node.second )
+ {
+ gp_Pnt p = sides[iS]->Value3d( u_node.first );
+ u_node.second = meshDS->AddNode( p.X(), p.Y(), p.Z() );
+ TopoDS_Edge edge;
+ double param = sides[iS]->Parameter( u_node.first, edge );
+ meshDS->SetNodeOnEdge( u_node.second, edge, param );
+ }
+ sideNodes.push_back( u_node.second );
+ sideNodes.back().SetUV( helper.GetNodeUV( face, u_node.second ));
+ }
+ tmpQuad->side[ iS ? iDir+2 : iDir ] = StdMeshers_FaceSide::New( sideNodes, face );
+ }
+ }
+ StdMeshers_Quadrangle_2D::myCheckOri = true;
+ StdMeshers_Quadrangle_2D::myQuadList.clear();
+ StdMeshers_Quadrangle_2D::myQuadList.push_back( tmpQuad );
+ StdMeshers_Quadrangle_2D::myHelper = &helper;
+ if ( StdMeshers_Quadrangle_2D::computeQuadDominant( mesh, face, tmpQuad ) &&
+ StdMeshers_Quadrangle_2D::check())
+ {
+ resultQuad = quad;
+ }
+ StdMeshers_Quadrangle_2D::myQuadList.clear();
+ StdMeshers_Quadrangle_2D::myHelper = nullptr;
+ }
+ return resultQuad;
+ }
};
+
//=======================================================================
/*!
* \brief Algorithm projecting 1D mesh
int removeQuasiQuads(list< SMESH_subMesh* >& notQuadSubMesh,
SMESH_MesherHelper* helper,
- StdMeshers_Quadrangle_2D* quadAlgo)
+ TQuadrangleAlgo* quadAlgo)
{
int nbRemoved = 0;
//SMESHDS_Mesh* mesh = notQuadSubMesh.front()->GetFather()->GetMeshDS();
return nbSides;
}
+ //================================================================================
+ /*!
+ * \brief Count EDGEs ignoring degenerated ones
+ */
+ //================================================================================
+
+ int CountEdges( const TopoDS_Face& face )
+ {
+ int nbE = 0;
+ for ( TopExp_Explorer edgeExp( face, TopAbs_EDGE ); edgeExp.More(); edgeExp.Next() )
+ if ( !SMESH_Algo::isDegenerated( TopoDS::Edge( edgeExp.Current() )))
+ ++nbE;
+
+ return nbE;
+ }
+
//================================================================================
/*!
* \brief Set/get wire index to FaceQuadStruct
}
#endif
}
+
} // namespace
//=======================================================================
SMESH_MesherHelper helper( theMesh );
myHelper = &helper;
myPrevBottomSM = 0;
+ TQuadrangleAlgo::Cleaner( TQuadrangleAlgo::instance( this ));
int nbSolids = helper.Count( theShape, TopAbs_SOLID, /*skipSame=*/false );
if ( nbSolids < 1 )
// look for meshed FACEs ("source" FACEs) that must be prism bottoms
list< TopoDS_Face > meshedFaces, notQuadMeshedFaces, notQuadFaces;
const bool meshHasQuads = ( theMesh.NbQuadrangles() > 0 );
- //StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this );
for ( int iF = 1; iF <= faceToSolids.Extent(); ++iF )
{
const TopoDS_Face& face = TopoDS::Face( faceToSolids.FindKey( iF ));
return false;
SMESHDS_SubMesh* smDS = theMesh.GetMeshDS()->MeshElements( prism.myTop );
- if ( !myHelper->IsSameElemGeometry( smDS, SMDSGeom_QUADRANGLE ))
+ if ( !myHelper->IsSameElemGeometry( smDS, SMDSGeom_QUADRANGLE ) ||
+ !myHelper->IsStructured( theMesh.GetSubMesh( prism.myTop )))
{
meshedFaces.push_front( prism.myTop );
}
SMESH_Mesh* mesh = myHelper->GetMesh();
- StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
+ TQuadrangleAlgo* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
TopTools_MapOfShape faceMap;
TopTools_IndexedDataMapOfShapeListOfShape edgeToFaces;
SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
DBGOUT( endl << "COMPUTE Prism " << meshDS->ShapeToIndex( thePrism.myShape3D ));
- TProjction1dAlgo* projector1D = TProjction1dAlgo::instance( this );
- StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
+ TProjction1dAlgo* projector1D = TProjction1dAlgo::instance( this );
+ TQuadrangleAlgo* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
// SMESH_HypoFilter hyp1dFilter( SMESH_HypoFilter::IsAlgo(),/*not=*/true);
// hyp1dFilter.And( SMESH_HypoFilter::HasDim( 1 ));
bool StdMeshers_Prism_3D::project2dMesh(const TopoDS_Face& theSrcFace,
const TopoDS_Face& theTgtFace)
{
+ if ( CountEdges( theSrcFace ) != CountEdges( theTgtFace ))
+ return false;
+
TProjction2dAlgo* projector2D = TProjction2dAlgo::instance( this );
projector2D->myHyp.SetSourceFace( theSrcFace );
bool ok = projector2D->Compute( *myHelper->GetMesh(), theTgtFace );
