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23418: [OCC] Mesh: Minimization of memory usage of SMESH

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attempt to improve compacting
This commit is contained in:
eap 2018-02-19 16:04:29 +03:00
parent 7d38b59de5
commit 2c9f1eaba0
1 changed files with 17 additions and 10 deletions
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27
src/SMDS/SMDS_UnstructuredGrid.cxx
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@ -188,10 +188,10 @@ void SMDS_UnstructuredGrid::compactGrid(std::vector<int>& idNodesOldToNew, int n
int oldNodeSize = this->GetNumberOfPoints(); int oldNodeSize = this->GetNumberOfPoints();
bool updateNodes = ( oldNodeSize > newNodeSize ); bool updateNodes = ( oldNodeSize > newNodeSize );
if ( updateNodes ) if ( true /*updateNodes*/ )
{ {
// 21125: EDF 1233 SMESH: Degradation of precision in a test case for quadratic conversion // 21125: EDF 1233 SMESH: Degradation of precision in a test case for quadratic conversion
// using double type for storing coordinates of nodes instead float. // Use double type for storing coordinates of nodes instead float.
vtkPoints *newPoints = vtkPoints::New(); vtkPoints *newPoints = vtkPoints::New();
newPoints->SetDataType( VTK_DOUBLE ); newPoints->SetDataType( VTK_DOUBLE );
newPoints->SetNumberOfPoints( newNodeSize ); newPoints->SetNumberOfPoints( newNodeSize );
@ -212,8 +212,11 @@ void SMDS_UnstructuredGrid::compactGrid(std::vector<int>& idNodesOldToNew, int n
this->SetPoints(newPoints); this->SetPoints(newPoints);
newPoints->Delete(); newPoints->Delete();
} }
this->Points->Squeeze(); else
this->Points->Modified(); {
this->Points->Squeeze();
this->Points->Modified();
}
// Compact cells if VTK IDs do not correspond to SMDS IDs or nodes compacted // Compact cells if VTK IDs do not correspond to SMDS IDs or nodes compacted
@ -222,7 +225,7 @@ void SMDS_UnstructuredGrid::compactGrid(std::vector<int>& idNodesOldToNew, int n
for ( int newID = 0, nbIDs = idCellsNewToOld.size(); newID < nbIDs && !updateCells; ++newID ) for ( int newID = 0, nbIDs = idCellsNewToOld.size(); newID < nbIDs && !updateCells; ++newID )
updateCells = ( idCellsNewToOld[ newID ] != newID ); updateCells = ( idCellsNewToOld[ newID ] != newID );
if ( !updateCells ) // no holes in elements if ( false /*!updateCells*/ ) // no holes in elements
{ {
this->Connectivity->Squeeze(); this->Connectivity->Squeeze();
this->Locations->Squeeze(); this->Locations->Squeeze();
@ -245,10 +248,15 @@ void SMDS_UnstructuredGrid::compactGrid(std::vector<int>& idNodesOldToNew, int n
// --- create new compacted Connectivity, Locations and Types // --- create new compacted Connectivity, Locations and Types
int newConnectivitySize = this->Connectivity->GetNumberOfConnectivityEntries();
if ( newCellSize != oldCellSize )
for ( int i = 0; i < oldCellSize - 1; ++i )
if ( this->Types->GetValue( i ) == VTK_EMPTY_CELL )
newConnectivitySize -= this->Locations->GetValue( i+1 ) - this->Locations->GetValue( i );
vtkCellArray *newConnectivity = vtkCellArray::New(); vtkCellArray *newConnectivity = vtkCellArray::New();
newConnectivity->Initialize(); newConnectivity->Initialize();
int oldCellDataSize = this->Connectivity->GetData()->GetSize(); newConnectivity->Allocate( newConnectivitySize );
newConnectivity->Allocate(oldCellDataSize);
vtkUnsignedCharArray *newTypes = vtkUnsignedCharArray::New(); vtkUnsignedCharArray *newTypes = vtkUnsignedCharArray::New();
newTypes->Initialize(); newTypes->Initialize();
@ -262,7 +270,6 @@ void SMDS_UnstructuredGrid::compactGrid(std::vector<int>& idNodesOldToNew, int n
copyBloc(newTypes, idCellsNewToOld, idNodesOldToNew, copyBloc(newTypes, idCellsNewToOld, idNodesOldToNew,
newConnectivity, newLocations, pointsCell ); newConnectivity, newLocations, pointsCell );
newConnectivity->Squeeze();
if (vtkDoubleArray* diameters = if (vtkDoubleArray* diameters =
vtkDoubleArray::SafeDownCast( vtkDataSet::CellData->GetScalars() )) // Balls vtkDoubleArray::SafeDownCast( vtkDataSet::CellData->GetScalars() )) // Balls
@ -346,8 +353,8 @@ void SMDS_UnstructuredGrid::copyNodes(vtkPoints * newPoints,
} }
void SMDS_UnstructuredGrid::copyBloc(vtkUnsignedCharArray * newTypes, void SMDS_UnstructuredGrid::copyBloc(vtkUnsignedCharArray * newTypes,
const std::vector<int>& idCellsNewToOld, const std::vector<int>& idCellsNewToOld,
const std::vector<int>& idNodesOldToNew, const std::vector<int>& idNodesOldToNew,
vtkCellArray* newConnectivity, vtkCellArray* newConnectivity,
vtkIdTypeArray* newLocations, vtkIdTypeArray* newLocations,
std::vector<vtkIdType>& pointsCell) std::vector<vtkIdType>& pointsCell)