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0020749: EDF 1291 SMESH : Create 2D Mesh from 3D improvement

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+  void MakeBoundaryMesh(const TIDSortedElemSet& elements,
+                        Bnd_Dimension           dimension,
+                        SMESH_Group*            group = 0,
+                        SMESH_Mesh*             targetMesh = 0,
+                        bool                    toCopyElements = false,
+                        bool                    toCopyExistingBondary = false);
This commit is contained in:
eap 2010-10-15 06:31:45 +00:00
parent 22733707ba
commit 183a73c986
2 changed files with 204 additions and 12 deletions
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200
src/SMESH/SMESH_MeshEditor.cxx
View File

@ -35,6 +35,7 @@
#include "SMDS_SpacePosition.hxx"
#include "SMDS_QuadraticFaceOfNodes.hxx"
#include "SMDS_MeshGroup.hxx"
#include "SMDS_SetIterator.hxx"
#include "SMESHDS_Group.hxx"
#include "SMESHDS_Mesh.hxx"
@ -99,6 +100,8 @@ using namespace SMESH::Controls;
typedef map<const SMDS_MeshElement*, list<const SMDS_MeshNode*> > TElemOfNodeListMap;
typedef map<const SMDS_MeshElement*, list<const SMDS_MeshElement*> > TElemOfElemListMap;
typedef SMDS_SetIterator< SMDS_pElement, TIDSortedElemSet::const_iterator> TSetIterator;
//=======================================================================
//function : SMESH_MeshEditor
//purpose :
@ -219,6 +222,7 @@ SMESH_MeshEditor::AddElement(const vector<const SMDS_MeshNode*> & node,
node[16],node[17],node[18],node[19] );
}
}
if ( e ) myLastCreatedElems.Append( e );
return e;
}
@ -5531,10 +5535,8 @@ SMESH_MeshEditor::Transform (TIDSortedElemSet & theElems,
}
}
else if ( theCopy ) {
if ( SMDS_MeshElement* copy = AddElement( nodes, elem->GetType(), elem->IsPoly() )) {
myLastCreatedElems.Append( copy );
if ( AddElement( nodes, elem->GetType(), elem->IsPoly() ))
srcElems.Append( elem );
}
}
else {
// reverse element as it was reversed by transformation
@ -9829,7 +9831,7 @@ bool SMESH_MeshEditor::doubleNodes( SMESHDS_Mesh* theMeshDS,
continue;
if ( theIsDoubleElem )
myLastCreatedElems.Append( AddElement(newNodes, anElem->GetType(), anElem->IsPoly()) );
AddElement(newNodes, anElem->GetType(), anElem->IsPoly());
else
theMeshDS->ChangeElementNodes( anElem, &newNodes[ 0 ], anElem->NbNodes() );
@ -10054,7 +10056,7 @@ bool SMESH_MeshEditor::DoubleNodesInRegion( const TIDSortedElemSet& theElems,
//================================================================================
/*!
* \brief Generated skin mesh (containing 2D cells) from 3D mesh
* \brief Generates skin mesh (containing 2D cells) from 3D mesh
* The created 2D mesh elements based on nodes of free faces of boundary volumes
* \return TRUE if operation has been completed successfully, FALSE otherwise
*/
@ -10096,9 +10098,195 @@ bool SMESH_MeshEditor::Make2DMeshFrom3D()
nbExisted++;
continue; // face already exsist
}
myLastCreatedElems.Append( AddElement(nodes, SMDSAbs_Face, isPoly && iface == 1) );
AddElement(nodes, SMDSAbs_Face, isPoly && iface == 1);
nbCreated++;
}
}
return ( nbFree==(nbExisted+nbCreated) );
}
namespace
{
inline const SMDS_MeshNode* getNodeWithSameID(SMESHDS_Mesh* mesh, const SMDS_MeshNode* node)
{
if ( const SMDS_MeshNode* n = mesh->FindNode( node->GetID() ))
return n;
return mesh->AddNodeWithID( node->X(),node->Y(),node->Z(), node->GetID() );
}
}
//================================================================================
/*!
* \brief Creates missing boundary elements
* \param elements - elements whose boundary is to be checked
* \param dimension - defines type of boundary elements to create
* \param group - a group to store created boundary elements in
* \param targetMesh - a mesh to store created boundary elements in
* \param toCopyElements - if true, the checked elements will be copied into the targetMesh
* \param toCopyExistingBondary - if true, not only new but also pre-existing
* boundary elements will be copied into the targetMesh
*/
//================================================================================
void SMESH_MeshEditor::MakeBoundaryMesh(const TIDSortedElemSet& elements,
Bnd_Dimension dimension,
SMESH_Group* group/*=0*/,
SMESH_Mesh* targetMesh/*=0*/,
bool toCopyElements/*=false*/,
bool toCopyExistingBondary/*=false*/)
{
SMDSAbs_ElementType missType = (dimension == BND_2DFROM3D) ? SMDSAbs_Face : SMDSAbs_Edge;
SMDSAbs_ElementType elemType = (dimension == BND_1DFROM2D) ? SMDSAbs_Face : SMDSAbs_Volume;
// hope that all elements are of the same type, do not check them all
if ( !elements.empty() && (*elements.begin())->GetType() != elemType )
throw SALOME_Exception(LOCALIZED("wrong element type"));
if ( !targetMesh )
toCopyElements = toCopyExistingBondary = false;
SMESH_MeshEditor tgtEditor( targetMesh ? targetMesh : myMesh );
SMESHDS_Mesh* aMesh = GetMeshDS(), *tgtMeshDS = tgtEditor.GetMeshDS();
SMDS_VolumeTool vTool;
TIDSortedElemSet emptySet, avoidSet;
int inode;
typedef vector<const SMDS_MeshNode*> TConnectivity;
SMDS_ElemIteratorPtr eIt;
if (elements.empty())
eIt = aMesh->elementsIterator(elemType);
else
eIt = SMDS_ElemIteratorPtr( new TSetIterator( elements.begin(), elements.end() ));
while (eIt->more())
{
const SMDS_MeshElement* elem = eIt->next();
const int iQuad = elem->IsQuadratic();
// 1. For an elem, get present bnd elements and connectivities of missing bnd elements
vector<const SMDS_MeshElement*> presentBndElems;
vector<TConnectivity> missingBndElems;
TConnectivity nodes;
if ( vTool.Set(elem) ) // elem is a volume ------------------------------------------
{
vTool.SetExternalNormal();
for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
{
if (!vTool.IsFreeFace(iface))
continue;
int nbFaceNodes = vTool.NbFaceNodes(iface);
const SMDS_MeshNode** nn = vTool.GetFaceNodes(iface);
if ( missType == SMDSAbs_Edge ) // boundary edges
{
nodes.resize( 2+iQuad );
for ( int i = 0; i < nbFaceNodes; i += 1+iQuad)
{
for ( int j = 0; j < nodes.size(); ++j )
nodes[j] =nn[i+j];
if ( const SMDS_MeshElement* edge =
aMesh->FindElement(nodes,SMDSAbs_Edge,/*noMedium=*/0))
presentBndElems.push_back( edge );
else
missingBndElems.push_back( nodes );
}
}
else // boundary face
{
nodes.clear();
for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
nodes.push_back( nn[inode] );
if (iQuad)
for ( inode = 1; inode < nbFaceNodes; inode += 2)
nodes.push_back( nn[inode] );
if (const SMDS_MeshFace * f = aMesh->FindFace( nodes ) )
presentBndElems.push_back( f );
else
missingBndElems.push_back( nodes );
}
}
}
else // elem is a face ------------------------------------------
{
avoidSet.clear(), avoidSet.insert( elem );
int nbNodes = elem->NbCornerNodes();
nodes.resize( 2 /*+ iQuad*/);
for ( int i = 0; i < nbNodes; i++ )
{
nodes[0] = elem->GetNode(i);
nodes[1] = elem->GetNode((i+1)%nbNodes);
if ( FindFaceInSet( nodes[0], nodes[1], emptySet, avoidSet))
continue; // not free link
//if ( iQuad )
//nodes[2] = elem->GetNode( i + nbNodes );
if ( const SMDS_MeshElement* edge =
aMesh->FindElement(nodes,SMDSAbs_Edge,/*noMedium=*/true))
presentBndElems.push_back( edge );
else
missingBndElems.push_back( nodes );
}
}
// 2. Add missing boundary elements
if ( targetMesh != myMesh )
// instead of making a map of nodes in this mesh and targetMesh,
// we create nodes with same IDs. We can renumber them later, if needed
for ( int i = 0; i < missingBndElems.size(); ++i )
{
TConnectivity& srcNodes = missingBndElems[i];
TConnectivity nodes( srcNodes.size() );
for ( inode = 0; inode < nodes.size(); ++inode )
nodes[inode] = getNodeWithSameID( tgtMeshDS, srcNodes[inode] );
tgtEditor.AddElement(nodes, missType, elem->IsPoly() && nodes.size()/(iQuad+1)>4);
}
else
for ( int i = 0; i < missingBndElems.size(); ++i )
{
TConnectivity& nodes = missingBndElems[i];
tgtEditor.AddElement(nodes, missType, elem->IsPoly() && nodes.size()/(iQuad+1)>4);
}
// 3. Copy present boundary elements
if ( toCopyExistingBondary )
for ( int i = 0 ; i < presentBndElems.size(); ++i )
{
const SMDS_MeshElement* e = presentBndElems[i];
TConnectivity nodes( e->NbNodes() );
for ( inode = 0; inode < nodes.size(); ++inode )
nodes[inode] = getNodeWithSameID( tgtMeshDS, e->GetNode(inode) );
tgtEditor.AddElement(nodes, missType, e->IsPoly());
// leave only missing elements in tgtEditor.myLastCreatedElems
tgtEditor.myLastCreatedElems.Remove( tgtEditor.myLastCreatedElems.Size() );
}
} // loop on given elements
// 4. Fill group with missing boundary elements
if ( group )
{
if ( SMESHDS_Group* g = dynamic_cast<SMESHDS_Group*>( group->GetGroupDS() ))
for ( int i = 0; i < tgtEditor.myLastCreatedElems.Size(); ++i )
g->SMDSGroup().Add( tgtEditor.myLastCreatedElems( i+1 ));
}
tgtEditor.myLastCreatedElems.Clear();
// 5. Copy given elements
if ( toCopyElements )
{
if (elements.empty())
eIt = aMesh->elementsIterator(elemType);
else
eIt = SMDS_ElemIteratorPtr( new TSetIterator( elements.begin(), elements.end() ));
while (eIt->more())
{
const SMDS_MeshElement* elem = eIt->next();
TConnectivity nodes( elem->NbNodes() );
for ( inode = 0; inode < nodes.size(); ++inode )
nodes[inode] = getNodeWithSameID( tgtMeshDS, elem->GetNode(inode) );
tgtEditor.AddElement(nodes, elemType, elem->IsPoly());
tgtEditor.myLastCreatedElems.Clear();
}
}
return;
}

16
src/SMESH/SMESH_MeshEditor.hxx
View File

@ -624,13 +624,17 @@ public:
const TIDSortedElemSet& theNodesNot,
const TopoDS_Shape& theShape );
/*!
* \brief Generated skin mesh (containing 2D cells) from 3D mesh
* The created 2D mesh elements based on nodes of free faces of boundary volumes
* \return TRUE if operation has been completed successfully, FALSE otherwise
*/
bool Make2DMeshFrom3D();
enum Bnd_Dimension { BND_2DFROM3D, BND_1DFROM3D, BND_1DFROM2D };
void MakeBoundaryMesh(const TIDSortedElemSet& elements,
Bnd_Dimension dimension,
SMESH_Group* group = 0,
SMESH_Mesh* targetMesh = 0,
bool toCopyElements = false,
bool toCopyExistingBondary = false);
private:
/*!