template<typename TInputIdType, typename TFaceIdType>
class vtkStaticFaceHashLinksTemplate< TInputIdType, TFaceIdType >
Templated on types of ids defining an edge.
templated hashLinks for extracting faces from a vtkUnstructuredGrid
vtkStaticFaceHashLinksTemplate is a templated class for grouping faces of an unstructured grid. The faces are grouped by their hash value. Their hash value is the minimum of the ids of the points defining the face of a 3D cells, or the the number of points of the unstructured grid if the cell is a 0D-1D-2D.
To use this class first you need to call BuildHashLinks() with the vtkUnstructuredGrid as argument. Then you can use the methods 1) GetNumberOfFaces() to get the number of faces in the grid 2) GetNumberOfHashes() to get the number of hashes 4) GetNumberOfFacesInHash() to get the number of faces in a particular hash 5) GetCellIdOfFacesInHash() to get the cell id of the faces in a particular hash 6) GetFaceIdOfFacesInHash() to get the face id of the faces in a particular hash
The hash links are the keys of vtkUnstructuredGridSides::BuildScatteredSides(): the faces of the 3D cells, in the order of their cells, then, in the last hash, the 0D-1D-2D cells, in the order of their ids, with a face id of -1.
Template parameters: 1) TInputIdType: the type of the id of the cells and points of the input grid. If Number of points and number of cells Cells < 2^31 then use vtkTypeInt32. Otherwise, use vtkTypeInt64. 2) TFaceIdType: the type of the id of the faces of the input grid. Most of the times a cell can have less than 2^7 faces, so use vtkTypeInt8. Otherwise, use vtkTypeInt32 when the input grid has polyhedron cells. Only these 4 combinations, those of vtkUnstructuredGridSides, are supported.
- Warning
- This class has been threaded with vtkSMPTools. Using TBB or other non-sequential type (set in the CMake variable VTK_SMP_IMPLEMENTATION_TYPE) may improve performance significantly.
- See also
- vtkUnstructuredGridSides, vtkStaticElementLocator, vtkStaticCellLinksTemplate
Definition at line 60 of file vtkStaticFaceHashLinksTemplate.h.
1.16.1