//================================================================================
SMESH_MesherHelper::SMESH_MesherHelper(SMESH_Mesh& theMesh)
- : myParIndex(0), myMesh(&theMesh), myShapeID(0), myCreateQuadratic(false),
+ : myParIndex(0),
+ myMesh(&theMesh),
+ myShapeID(0),
+ myCreateQuadratic(false),
+ myCreateBiQuadratic(false),
myFixNodeParameters(false)
{
myPar1[0] = myPar2[0] = myPar1[1] = myPar2[1] = 0;
return make_pair( shapeID, shapeType );
}
+//=======================================================================
+//function : GetCentralNode
+//purpose : Return existing or create a new central node for a quardilateral
+// quadratic face given its 8 nodes.
+//@param : force3d - true means node creation in between the given nodes,
+// else node position is found on a geometrical face if any.
+//=======================================================================
+
+const SMDS_MeshNode* SMESH_MesherHelper::GetCentralNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n12,
+ const SMDS_MeshNode* n23,
+ const SMDS_MeshNode* n34,
+ const SMDS_MeshNode* n41,
+ bool force3d)
+{
+ SMDS_MeshNode *centralNode = 0; // central node to return
+
+ // Find an existing central node
+
+ TBiQuad keyOfMap(n1,n2,n3,n4);
+ std::map<TBiQuad, SMDS_MeshNode* >::iterator itMapCentralNode;
+ itMapCentralNode = myMapWithCentralNode.find( keyOfMap );
+ if ( itMapCentralNode != myMapWithCentralNode.end() )
+ {
+ return (*itMapCentralNode).second;
+ }
+
+ // Get type of shape for the new central node
+
+ TopAbs_ShapeEnum shapeType = TopAbs_SHAPE;
+ int shapeID = -1;
+ int faceID = -1;
+ TopoDS_Shape shape;
+ TopTools_ListIteratorOfListOfShape it;
+
+ std::map< int, int > faceId2nbNodes;
+ std::map< int, int > ::iterator itMapWithIdFace;
+
+ SMESHDS_Mesh* meshDS = GetMeshDS();
+
+ // check if a face lie on a FACE, i.e. its all corner nodes lie either on the FACE or
+ // on sub-shapes of the FACE
+ if ( GetMesh()->HasShapeToMesh() )
+ {
+ const SMDS_MeshNode* nodes[] = { n1, n2, n3, n4 };
+ for(int i = 0; i < 4; i++)
+ {
+ shape = GetSubShapeByNode( nodes[i], meshDS );
+ if ( shape.IsNull() ) break;
+ if ( shape.ShapeType() == TopAbs_SOLID )
+ {
+ shapeID = nodes[i]->getshapeId();
+ shapeType = TopAbs_SOLID;
+ break;
+ }
+ if ( shape.ShapeType() == TopAbs_FACE )
+ {
+ faceID = nodes[i]->getshapeId();
+ itMapWithIdFace = faceId2nbNodes.insert( std::make_pair( faceID, 0 ) ).first;
+ itMapWithIdFace->second++;
+ }
+ else
+ {
+ PShapeIteratorPtr it = GetAncestors(shape, *GetMesh(), TopAbs_FACE );
+ while ( const TopoDS_Shape* face = it->next() )
+ {
+ faceID = meshDS->ShapeToIndex( *face );
+ itMapWithIdFace = faceId2nbNodes.insert( std::make_pair( faceID, 0 ) ).first;
+ itMapWithIdFace->second++;
+ }
+ }
+ }
+ }
+ if ( shapeID < 1 && !faceId2nbNodes.empty() ) // SOLID not found
+ {
+ // find ID of the FACE the four corner nodes belong to
+ itMapWithIdFace = faceId2nbNodes.begin();
+ for ( ; itMapWithIdFace != faceId2nbNodes.end(); ++itMapWithIdFace)
+ {
+ if ( itMapWithIdFace->second == 4 )
+ {
+ shapeType = TopAbs_FACE;
+ faceID = (*itMapWithIdFace).first;
+ break;
+ }
+ }
+ }
+
+ TopoDS_Face F;
+ if ( shapeType == TopAbs_FACE )
+ {
+ F = TopoDS::Face( meshDS->IndexToShape( faceID ));
+ }
+
+ // Create a node
+
+ gp_XY uvAvg;
+ gp_Pnt P;
+ if ( !F.IsNull() )
+ {
+ if ( !force3d )
+ {
+ uvAvg = calcTFI (0.5, 0.5,
+ GetNodeUV(F,n1,n3), GetNodeUV(F,n2,n4),
+ GetNodeUV(F,n3,n1), GetNodeUV(F,n4,n2),
+ GetNodeUV(F,n12,n3), GetNodeUV(F,n23,n4),
+ GetNodeUV(F,n34,n2), GetNodeUV(F,n41,n2));
+ TopLoc_Location loc;
+ Handle( Geom_Surface ) S = BRep_Tool::Surface( F, loc );
+ P = S->Value( uvAvg.X(), uvAvg.Y() ).Transformed( loc );
+ centralNode = meshDS->AddNode( P.X(), P.Y(), P.Z() );
+ if ( mySetElemOnShape )
+ meshDS->SetNodeOnFace( centralNode, faceID, uvAvg.X(), uvAvg.Y() );
+ myMapWithCentralNode.insert( std::make_pair( keyOfMap, centralNode ) );
+ return centralNode;
+ }
+ }
+
+ P = ( SMESH_TNodeXYZ( n1 ) +
+ SMESH_TNodeXYZ( n2 ) +
+ SMESH_TNodeXYZ( n3 ) +
+ SMESH_TNodeXYZ( n4 ) ) / 4;
+ centralNode = meshDS->AddNode( P.X(), P.Y(), P.Z() );
+
+ if ( mySetElemOnShape )
+ {
+ if ( !F.IsNull() )
+ {
+ uvAvg = (GetNodeUV(F,n1,n3) +
+ GetNodeUV(F,n2,n4) +
+ GetNodeUV(F,n3,n1) +
+ GetNodeUV(F,n4,n2)) / 4;
+ CheckNodeUV( F, centralNode, uvAvg, 2*BRep_Tool::Tolerance( F ), /*force=*/true);
+ meshDS->SetNodeOnFace( centralNode, faceID, uvAvg.X(), uvAvg.Y() );
+ }
+ else if ( shapeID > 0 )
+ meshDS->SetNodeInVolume( centralNode, shapeID );
+ else if ( myShapeID > 0 )
+ meshDS->SetMeshElementOnShape( centralNode, myShapeID );
+ }
+
+ myMapWithCentralNode.insert( std::make_pair( keyOfMap, centralNode ) );
+ return centralNode;
+}
+
//=======================================================================
//function : GetMediumNode
-//purpose : Return existing or create new medium nodes between given ones
+//purpose : Return existing or create a new medium node between given ones
//=======================================================================
const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1,
gp_XY UV = GetMiddleUV( S, uv[0], uv[1] );
gp_Pnt P = S->Value( UV.X(), UV.Y() ).Transformed(loc);
n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y());
+ if ( mySetElemOnShape )
+ meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y());
myTLinkNodeMap.insert(make_pair(link,n12));
return n12;
}
gp_Pnt P = C->Value( U );
n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnEdge(n12, edgeID, U);
+ if ( mySetElemOnShape )
+ meshDS->SetNodeOnEdge(n12, edgeID, U);
myTLinkNodeMap.insert(make_pair(link,n12));
return n12;
}
double z = ( n1->Z() + n2->Z() )/2.;
n12 = meshDS->AddNode(x,y,z);
- if ( !F.IsNull() )
- {
- gp_XY UV = ( uv[0] + uv[1] ) / 2.;
- CheckNodeUV( F, n12, UV, 2*BRep_Tool::Tolerance( F ), /*force=*/true);
- meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y() );
- }
- else if ( !E.IsNull() )
- {
- double U = ( u[0] + u[1] ) / 2.;
- CheckNodeU( E, n12, U, 2*BRep_Tool::Tolerance( E ), /*force=*/true);
- meshDS->SetNodeOnEdge(n12, edgeID, U);
- }
- else if ( myShapeID > 0 )
+ if ( mySetElemOnShape )
{
- meshDS->SetNodeInVolume(n12, myShapeID);
+ if ( !F.IsNull() )
+ {
+ gp_XY UV = ( uv[0] + uv[1] ) / 2.;
+ CheckNodeUV( F, n12, UV, 2*BRep_Tool::Tolerance( F ), /*force=*/true);
+ meshDS->SetNodeOnFace(n12, faceID, UV.X(), UV.Y() );
+ }
+ else if ( !E.IsNull() )
+ {
+ double U = ( u[0] + u[1] ) / 2.;
+ CheckNodeU( E, n12, U, 2*BRep_Tool::Tolerance( E ), /*force=*/true);
+ meshDS->SetNodeOnEdge(n12, edgeID, U);
+ }
+ else if ( myShapeID > 0 )
+ {
+ meshDS->SetMeshElementOnShape(n12, myShapeID);
+ }
}
myTLinkNodeMap.insert( make_pair( link, n12 ));
GetMeshDS()->MoveNode( n12, p.X(), p.Y(), p.Z() );
}
- GetMeshDS()->SetNodeOnEdge(n12, edges[iOkEdge], u);
+ if ( mySetElemOnShape )
+ GetMeshDS()->SetNodeOnEdge(n12, edges[iOkEdge], u);
myTLinkNodeMap.insert( make_pair( SMESH_TLink(n1,n2), n12 ));
//=======================================================================
//function : AddFace
-//purpose : Creates quadratic or linear quadrangle
+//purpose : Creates bi-quadratic, quadratic or linear quadrangle
//=======================================================================
SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
-
- if(id)
- elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
+ if(myCreateBiQuadratic)
+ {
+ const SMDS_MeshNode* nCenter = GetCentralNode(n1, n2, n3, n4, n12, n23, n34, n41, force3d);
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, nCenter, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41, nCenter);
+ }
else
- elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
+ {
+ if(id)
+ elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
+ else
+ elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
+ }
}
if ( mySetElemOnShape && myShapeID > 0 )
meshDS->SetMeshElementOnShape( elem, myShapeID );
//=======================================================================
//function : AddVolume
-//purpose : Creates quadratic or linear hexahedron
+//purpose : Creates bi-quadratic, quadratic or linear hexahedron
//=======================================================================
SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n26 = GetMediumNode(n2,n6,force3d);
const SMDS_MeshNode* n37 = GetMediumNode(n3,n7,force3d);
const SMDS_MeshNode* n48 = GetMediumNode(n4,n8,force3d);
-
- if(id)
- elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
- n12, n23, n34, n41, n56, n67,
- n78, n85, n15, n26, n37, n48, id);
+ if(myCreateBiQuadratic)
+ {
+ const SMDS_MeshNode* n1234 = GetCentralNode(n1,n2,n3,n4,n12,n23,n34,n41,force3d);
+ const SMDS_MeshNode* n1256 = GetCentralNode(n1,n2,n5,n6,n12,n26,n56,n15,force3d);
+ const SMDS_MeshNode* n2367 = GetCentralNode(n2,n3,n6,n7,n23,n37,n67,n26,force3d);
+ const SMDS_MeshNode* n3478 = GetCentralNode(n3,n4,n7,n8,n34,n48,n78,n37,force3d);
+ const SMDS_MeshNode* n1458 = GetCentralNode(n1,n4,n5,n8,n41,n48,n15,n85,force3d);
+ const SMDS_MeshNode* n5678 = GetCentralNode(n5,n6,n7,n8,n56,n67,n78,n85,force3d);
+
+ vector<gp_XYZ> pointsOnShapes( SMESH_Block::ID_Shell );
+
+ pointsOnShapes[ SMESH_Block::ID_V000 ] = SMESH_TNodeXYZ( n4 );
+ pointsOnShapes[ SMESH_Block::ID_V100 ] = SMESH_TNodeXYZ( n8 );
+ pointsOnShapes[ SMESH_Block::ID_V010 ] = SMESH_TNodeXYZ( n3 );
+ pointsOnShapes[ SMESH_Block::ID_V110 ] = SMESH_TNodeXYZ( n7 );
+ pointsOnShapes[ SMESH_Block::ID_V001 ] = SMESH_TNodeXYZ( n1 );
+ pointsOnShapes[ SMESH_Block::ID_V101 ] = SMESH_TNodeXYZ( n5 );
+ pointsOnShapes[ SMESH_Block::ID_V011 ] = SMESH_TNodeXYZ( n2 );
+ pointsOnShapes[ SMESH_Block::ID_V111 ] = SMESH_TNodeXYZ( n6 );
+
+ pointsOnShapes[ SMESH_Block::ID_Ex00 ] = SMESH_TNodeXYZ( n48 );
+ pointsOnShapes[ SMESH_Block::ID_Ex10 ] = SMESH_TNodeXYZ( n37 );
+ pointsOnShapes[ SMESH_Block::ID_E0y0 ] = SMESH_TNodeXYZ( n15 );
+ pointsOnShapes[ SMESH_Block::ID_E1y0 ] = SMESH_TNodeXYZ( n26 );
+ pointsOnShapes[ SMESH_Block::ID_Ex01 ] = SMESH_TNodeXYZ( n34 );
+ pointsOnShapes[ SMESH_Block::ID_Ex11 ] = SMESH_TNodeXYZ( n78 );
+ pointsOnShapes[ SMESH_Block::ID_E0y1 ] = SMESH_TNodeXYZ( n12 );
+ pointsOnShapes[ SMESH_Block::ID_E1y1 ] = SMESH_TNodeXYZ( n56 );
+ pointsOnShapes[ SMESH_Block::ID_E00z ] = SMESH_TNodeXYZ( n41 );
+ pointsOnShapes[ SMESH_Block::ID_E10z ] = SMESH_TNodeXYZ( n85 );
+ pointsOnShapes[ SMESH_Block::ID_E01z ] = SMESH_TNodeXYZ( n23 );
+ pointsOnShapes[ SMESH_Block::ID_E11z ] = SMESH_TNodeXYZ( n67 );
+
+ pointsOnShapes[ SMESH_Block::ID_Fxy0 ] = SMESH_TNodeXYZ( n3478 );
+ pointsOnShapes[ SMESH_Block::ID_Fxy1 ] = SMESH_TNodeXYZ( n1256 );
+ pointsOnShapes[ SMESH_Block::ID_Fx0z ] = SMESH_TNodeXYZ( n1458 );
+ pointsOnShapes[ SMESH_Block::ID_Fx1z ] = SMESH_TNodeXYZ( n2367 );
+ pointsOnShapes[ SMESH_Block::ID_F0yz ] = SMESH_TNodeXYZ( n1234 );
+ pointsOnShapes[ SMESH_Block::ID_F1yz ] = SMESH_TNodeXYZ( n5678 );
+
+ gp_XYZ centerCube(0.5, 0.5, 0.5);
+ gp_XYZ nCenterElem;
+ SMESH_Block::ShellPoint( centerCube, pointsOnShapes, nCenterElem );
+ const SMDS_MeshNode* nCenter =
+ meshDS->AddNode( nCenterElem.X(), nCenterElem.Y(), nCenterElem.Z() );
+ meshDS->SetNodeInVolume( nCenter, myShapeID );
+
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48,
+ n1234, n1256, n2367, n3478, n1458, n5678, nCenter, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48,
+ n1234, n1256, n2367, n3478, n1458, n5678, nCenter);
+ }
else
- elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
- n12, n23, n34, n41, n56, n67,
- n78, n85, n15, n26, n37, n48);
+ {
+ if(id)
+ elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48, id);
+ else
+ elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
+ n12, n23, n34, n41, n56, n67,
+ n78, n85, n15, n26, n37, n48);
+ }
}
if ( mySetElemOnShape && myShapeID > 0 )
meshDS->SetMeshElementOnShape( elem, myShapeID );
enum { ERR_OK, ERR_TRI, ERR_PRISM, ERR_UNKNOWN }; // errors of QFace::GetLinkChain()
// --------------------------------------------------------------------
/*!
- * \brief Face shared by two volumes and bound by QLinks
+ * \brief Quadratic face shared by two volumes and bound by QLinks
*/
struct QFace: public TIDSortedNodeSet
{
// 3. Compute displacement of medium nodes
// ---------------------------------------
- // two loops on QFaces: the first is to treat boundary links, the second is for internal ones
+ // two loops on QFaces: the first is to treat boundary links, the second is for internal ones.
TopLoc_Location loc;
- // not treat boundary of volumic submesh
+ bool checkUV;
+ // not to treat boundary of volumic sub-mesh.
int isInside = ( elemType == SMDSAbs_Volume && volumeOnly ) ? 1 : 0;
- for ( ; isInside < 2; ++isInside ) {
+ for ( ; isInside < 2; ++isInside )
+ {
MSG( "--------------- LOOP (inside=" << isInside << ") ------------------");
SMDS_TypeOfPosition pos = isInside ? SMDS_TOP_3DSPACE : SMDS_TOP_FACE;
SMDS_TypeOfPosition bndPos = isInside ? SMDS_TOP_FACE : SMDS_TOP_EDGE;
gp_Vec move1 = chain.back ()->_nodeMove;
TopoDS_Face face;
- bool checkUV = true;
if ( !isInside )
{
// compute node displacement of end links of chain in parametric space of face
// 4. Move nodes
// -------------
+ TIDSortedElemSet biQuadQuas, triQuadHexa;
+ const SMDS_MeshElement *biQuadQua, *triQuadHex;
+ const bool toFixCentralNodes = ( myMesh->NbBiQuadQuadrangles() +
+ myMesh->NbTriQuadraticHexas() );
+
for ( pLink = links.begin(); pLink != links.end(); ++pLink ) {
- if ( pLink->IsMoved() ) {
+ if ( pLink->IsMoved() )
+ {
gp_Pnt p = pLink->MiddlePnt() + pLink->Move();
GetMeshDS()->MoveNode( pLink->_mediumNode, p.X(), p.Y(), p.Z());
+
+ // collect bi-quadratic elements
+ if ( toFixCentralNodes )
+ {
+ biQuadQua = triQuadHex = 0;
+ SMDS_ElemIteratorPtr eIt = pLink->_mediumNode->GetInverseElementIterator();
+ while ( eIt->more() )
+ {
+ const SMDS_MeshElement* e = eIt->next();
+ SMDSAbs_EntityType type = e->GetEntityType();
+ if ( type == SMDSEntity_BiQuad_Quadrangle )
+ biQuadQuas.insert( e );
+ else if ( type == SMDSEntity_TriQuad_Hexa )
+ triQuadHexa.insert( e );
+ }
+ }
+ }
+ }
+
+ // Fix positions of central nodes of bi-tri-quadratic elements
+
+ // treat bi-quad quadrangles
+ {
+ vector< const SMDS_MeshNode* > nodes( 9 );
+ gp_XY uv[ 9 ];
+ //TIDSortedNodeSet checkedNodes;
+ TIDSortedElemSet::iterator quadIt = biQuadQuas.begin();
+ for ( ; quadIt != biQuadQuas.end(); ++quadIt )
+ {
+ const SMDS_MeshElement* quad = *quadIt;
+ // nodes
+ nodes.clear();
+ nodes.assign( quad->begin_nodes(), quad->end_nodes() );
+ // FACE
+ TopoDS_Shape S = GetSubShapeByNode( nodes.back(), GetMeshDS() );
+ if ( S.IsNull() || S.ShapeType() != TopAbs_FACE ) continue;
+ const TopoDS_Face& F = TopoDS::Face( S );
+ Handle( Geom_Surface ) surf = BRep_Tool::Surface( F, loc );
+ const double tol = BRep_Tool::Tolerance( F );
+ // UV
+ for ( int i = 0; i < 8; ++i )
+ {
+ uv[ i ] = GetNodeUV( F, nodes[i], nodes[8], &checkUV );
+ // as this method is used after mesh generation, UV of nodes is not
+ // updated according to bending links, so we update
+ if ( i > 3 && nodes[i]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
+ CheckNodeUV( F, nodes[i], uv[ i ], 2*tol, /*force=*/true );
+ }
+ // move central node
+ gp_XY uvCent = calcTFI (0.5, 0.5, uv[0],uv[1],uv[2],uv[3],uv[4],uv[5],uv[6],uv[7] );
+ gp_Pnt p = surf->Value( uvCent.X(), uvCent.Y() ).Transformed( loc );
+ GetMeshDS()->MoveNode( nodes[8], p.X(), p.Y(), p.Z());
+ }
+ }
+
+ // treat tri-quadratic hexahedra
+ {
+ SMDS_VolumeTool volExp;
+ TIDSortedElemSet::iterator hexIt = triQuadHexa.begin();
+ for ( ; hexIt != triQuadHexa.end(); ++hexIt )
+ {
+ volExp.Set( *hexIt, /*ignoreCentralNodes=*/false );
+
+ // fix nodes central in sides
+ for ( int iQuad = 0; iQuad < volExp.NbFaces(); ++iQuad )
+ {
+ const SMDS_MeshNode** quadNodes = volExp.GetFaceNodes( iQuad );
+ if ( quadNodes[8]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_3DSPACE )
+ {
+ gp_XYZ p = calcTFI( 0.5, 0.5,
+ SMESH_TNodeXYZ( quadNodes[0] ), SMESH_TNodeXYZ( quadNodes[2] ),
+ SMESH_TNodeXYZ( quadNodes[4] ), SMESH_TNodeXYZ( quadNodes[6] ),
+ SMESH_TNodeXYZ( quadNodes[1] ), SMESH_TNodeXYZ( quadNodes[3] ),
+ SMESH_TNodeXYZ( quadNodes[5] ), SMESH_TNodeXYZ( quadNodes[7] ));
+ GetMeshDS()->MoveNode( quadNodes[8], p.X(), p.Y(), p.Z());
+ }
+ }
+
+ // fix the volume central node
+ vector<gp_XYZ> pointsOnShapes( SMESH_Block::ID_Shell );
+ const SMDS_MeshNode** hexNodes = volExp.GetNodes();
+
+ pointsOnShapes[ SMESH_Block::ID_V000 ] = SMESH_TNodeXYZ( hexNodes[ 0 ] );
+ pointsOnShapes[ SMESH_Block::ID_V100 ] = SMESH_TNodeXYZ( hexNodes[ 3 ] );
+ pointsOnShapes[ SMESH_Block::ID_V010 ] = SMESH_TNodeXYZ( hexNodes[ 1 ] );
+ pointsOnShapes[ SMESH_Block::ID_V110 ] = SMESH_TNodeXYZ( hexNodes[ 2 ] );
+ pointsOnShapes[ SMESH_Block::ID_V001 ] = SMESH_TNodeXYZ( hexNodes[ 4 ] );
+ pointsOnShapes[ SMESH_Block::ID_V101 ] = SMESH_TNodeXYZ( hexNodes[ 7 ] );
+ pointsOnShapes[ SMESH_Block::ID_V011 ] = SMESH_TNodeXYZ( hexNodes[ 5 ] );
+ pointsOnShapes[ SMESH_Block::ID_V111 ] = SMESH_TNodeXYZ( hexNodes[ 6 ] );
+
+ pointsOnShapes[ SMESH_Block::ID_Ex00 ] = SMESH_TNodeXYZ( hexNodes[ 11 ] );
+ pointsOnShapes[ SMESH_Block::ID_Ex10 ] = SMESH_TNodeXYZ( hexNodes[ 9 ] );
+ pointsOnShapes[ SMESH_Block::ID_E0y0 ] = SMESH_TNodeXYZ( hexNodes[ 8 ] );
+ pointsOnShapes[ SMESH_Block::ID_E1y0 ] = SMESH_TNodeXYZ( hexNodes[ 10 ] );
+ pointsOnShapes[ SMESH_Block::ID_Ex01 ] = SMESH_TNodeXYZ( hexNodes[ 15 ] );
+ pointsOnShapes[ SMESH_Block::ID_Ex11 ] = SMESH_TNodeXYZ( hexNodes[ 13 ] );
+ pointsOnShapes[ SMESH_Block::ID_E0y1 ] = SMESH_TNodeXYZ( hexNodes[ 12 ] );
+ pointsOnShapes[ SMESH_Block::ID_E1y1 ] = SMESH_TNodeXYZ( hexNodes[ 14 ] );
+ pointsOnShapes[ SMESH_Block::ID_E00z ] = SMESH_TNodeXYZ( hexNodes[ 16 ] );
+ pointsOnShapes[ SMESH_Block::ID_E10z ] = SMESH_TNodeXYZ( hexNodes[ 19 ] );
+ pointsOnShapes[ SMESH_Block::ID_E01z ] = SMESH_TNodeXYZ( hexNodes[ 17 ] );
+ pointsOnShapes[ SMESH_Block::ID_E11z ] = SMESH_TNodeXYZ( hexNodes[ 18 ] );
+
+ pointsOnShapes[ SMESH_Block::ID_Fxy0 ] = SMESH_TNodeXYZ( hexNodes[ 20 ] );
+ pointsOnShapes[ SMESH_Block::ID_Fxy1 ] = SMESH_TNodeXYZ( hexNodes[ 25 ] );
+ pointsOnShapes[ SMESH_Block::ID_Fx0z ] = SMESH_TNodeXYZ( hexNodes[ 21 ] );
+ pointsOnShapes[ SMESH_Block::ID_Fx1z ] = SMESH_TNodeXYZ( hexNodes[ 23 ] );
+ pointsOnShapes[ SMESH_Block::ID_F0yz ] = SMESH_TNodeXYZ( hexNodes[ 24 ] );
+ pointsOnShapes[ SMESH_Block::ID_F1yz ] = SMESH_TNodeXYZ( hexNodes[ 22 ] );
+
+ gp_XYZ nCenterParams(0.5, 0.5, 0.5), nCenterCoords;
+ SMESH_Block::ShellPoint( nCenterParams, pointsOnShapes, nCenterCoords );
+ GetMeshDS()->MoveNode( hexNodes[26],
+ nCenterCoords.X(), nCenterCoords.Y(), nCenterCoords.Z());
}
}
class SMESH_EXPORT SMESH_MesherHelper
{
-public:
+ public:
// ---------- PUBLIC UTILITIES ----------
/*!
return ind;
}
+ /*!
+ * \brief Return UV of a point inside a quadrilateral FACE by it's
+ * normalized parameters within a unit quadrangle and the
+ * corresponding projections on sub-shapes of the real-world FACE.
+ * The used calculation method is called Trans-Finite Interpolation (TFI).
+ * \param x,y - normalized parameters that should be in range [0,1]
+ * \param a0,a1,a2,a3 - UV of VERTEXes of the FACE == projections on VERTEXes
+ * \param p0,p1,p2,p3 - UV of the point projections on EDGEs of the FACE
+ * \return gp_XY - UV of the point on the FACE
+ *
+ * Order of those UV in the FACE is as follows.
+ * a4 p3 a3
+ * o---x-----o
+ * | : |
+ * | :UV |
+ * p4 x...O.....x p2
+ * | : |
+ * o---x-----o
+ * a1 p1 a2
+ */
+ inline static gp_XY calcTFI(double x, double y,
+ const gp_XY a0,const gp_XY a1,const gp_XY a2,const gp_XY a3,
+ const gp_XY p0,const gp_XY p1,const gp_XY p2,const gp_XY p3);
+
+ /*!
+ * \brief Same as "gp_XY calcTFI(...)" but in 3D
+ */
+ inline static gp_XYZ calcTFI(double x, double y,
+ const gp_XYZ a0,const gp_XYZ a1,const gp_XYZ a2,const gp_XYZ a3,
+ const gp_XYZ p0,const gp_XYZ p1,const gp_XYZ p2,const gp_XYZ p3);
/*!
* \brief Count nb of sub-shapes
* \param shape - the shape
/*!
* \brief Set order of elements to create without calling IsQuadraticSubMesh()
*/
+
+ /*!
+ * \brief Set myCreateQuadratic flag
+ */
void SetIsQuadratic(const bool theBuildQuadratic)
{ myCreateQuadratic = theBuildQuadratic; }
+
+ /*!
+ * \brief Set myCreateBiQuadratic flag
+ */
+ void SetIsBiQuadratic(const bool theBuildBiQuadratic)
+ { myCreateBiQuadratic = theBuildBiQuadratic; }
+
/*!
* \brief Return myCreateQuadratic flag
*/
*/
bool IsReversedSubMesh (const TopoDS_Face& theFace);
+ /*!
+ * \brief Return myCreateBiQuadratic flag
+ */
+ bool GetIsBiQuadratic() const { return myCreateBiQuadratic; }
+
/*!
* \brief Move medium nodes of faces and volumes to fix distorted elements
* \param error - container of fixed distorted elements
const int id=0,
const bool force3d = false);
/*!
- * Creates quadratic or linear quadrangle
+ * Creates bi-quadratic, quadratic or linear quadrangle
*/
SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n4,
const int id = 0,
const bool force3d = false);
-
/*!
* Creates polygon, with additional nodes in quadratic mesh
*/
const int id = 0,
const bool force3d = true);
/*!
- * Creates quadratic or linear hexahedron
+ * Creates bi-quadratic, quadratic or linear hexahedron
*/
SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const bool force3d);
+ /*!
+ * \brief Return existing or create a new central node for a quardilateral
+ * quadratic face given its 8 nodes.
+ * \param force3d - true means node creation in between the given nodes,
+ * else node position is found on a geometrical face if any.
+ */
+ const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4,
+ const SMDS_MeshNode* n12,
+ const SMDS_MeshNode* n23,
+ const SMDS_MeshNode* n34,
+ const SMDS_MeshNode* n41,
+ bool force3d);
/*!
* \brief Return index and type of the shape (EDGE or FACE only) to set a medium node on
*/
virtual ~SMESH_MesherHelper();
-protected:
+ protected:
/*!
* \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
- * \param uv1 - UV on the seam
- * \param uv2 - UV within a face
- * \retval gp_Pnt2d - selected UV
+ * \param uv1 - UV on the seam
+ * \param uv2 - UV within a face
+ * \retval gp_Pnt2d - selected UV
*/
gp_Pnt2d GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
private:
// Forbiden copy constructor
- SMESH_MesherHelper (const SMESH_MesherHelper& theOther) {};
-
- // special map for using during creation of quadratic elements
- TLinkNodeMap myTLinkNodeMap;
+ SMESH_MesherHelper (const SMESH_MesherHelper& theOther);
+
+ // key of a map of bi-quadratic face to it's central node
+ struct TBiQuad: public std::pair<int, std::pair<int, int> >
+ {
+ TBiQuad(const SMDS_MeshNode* n1,
+ const SMDS_MeshNode* n2,
+ const SMDS_MeshNode* n3,
+ const SMDS_MeshNode* n4)
+ {
+ TIDSortedNodeSet s;
+ s.insert(n1);
+ s.insert(n2);
+ s.insert(n3);
+ s.insert(n4);
+ TIDSortedNodeSet::iterator n = s.begin();
+ first = (*n++)->GetID();
+ second.first = (*n++)->GetID();
+ second.second = (*n++)->GetID();
+ }
+ };
+
+ // maps used during creation of quadratic elements
+ TLinkNodeMap myTLinkNodeMap; // medium nodes on links
+ std::map< TBiQuad, SMDS_MeshNode* > myMapWithCentralNode; // central nodes of faces
std::set< int > myDegenShapeIds;
std::set< int > mySeamShapeIds;
int myShapeID;
bool myCreateQuadratic;
+ bool myCreateBiQuadratic;
bool mySetElemOnShape;
bool myFixNodeParameters;
std::map< int,bool > myNodePosShapesValidity;
bool toCheckPosOnShape(int shapeID ) const;
void setPosOnShapeValidity(int shapeID, bool ok ) const;
-
};
+//=======================================================================
+inline gp_XY
+SMESH_MesherHelper::calcTFI(double x, double y,
+ const gp_XY a0,const gp_XY a1,const gp_XY a2,const gp_XY a3,
+ const gp_XY p0,const gp_XY p1,const gp_XY p2,const gp_XY p3)
+{
+ return
+ ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
+ ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
+}
+//=======================================================================
+inline gp_XYZ
+SMESH_MesherHelper::calcTFI(double x, double y,
+ const gp_XYZ a0,const gp_XYZ a1,const gp_XYZ a2,const gp_XYZ a3,
+ const gp_XYZ p0,const gp_XYZ p1,const gp_XYZ p2,const gp_XYZ p3)
+{
+ return
+ ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
+ ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
+}
+//=======================================================================
#endif
