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109 lines
4.1 KiB
C
109 lines
4.1 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkCPExodusIIElementBlock.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkCPExodusIIElementBlock
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* @brief Uses an Exodus II element block as a
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* vtkMappedUnstructuredGrid's implementation.
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*
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*
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* This class allows raw data arrays returned by the Exodus II library to be
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* used directly in VTK without repacking the data into the vtkUnstructuredGrid
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* memory layout. Use the vtkCPExodusIIInSituReader to read an Exodus II file's
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* data into this structure.
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*/
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#ifndef vtkCPExodusIIElementBlock_h
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#define vtkCPExodusIIElementBlock_h
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#include "vtkIOExodusModule.h" // For export macro
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#include "vtkObject.h"
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#include "vtkMappedUnstructuredGrid.h" // For mapped unstructured grid wrapper
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#include <string> // For std::string
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class vtkGenericCell;
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class VTKIOEXODUS_EXPORT vtkCPExodusIIElementBlockImpl : public vtkObject
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{
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public:
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static vtkCPExodusIIElementBlockImpl* New();
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void PrintSelf(ostream& os, vtkIndent indent) override;
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vtkTypeMacro(vtkCPExodusIIElementBlockImpl, vtkObject);
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/**
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* Set the Exodus element block data. 'elements' is the array returned from
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* ex_get_elem_conn. 'type', 'numElements', and 'nodesPerElement' are obtained
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* from ex_get_elem_block. Returns true or false depending on whether or not
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* the element type can be translated into a VTK cell type. This object takes
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* ownership of the elements array unless this function returns false.
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*/
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bool SetExodusConnectivityArray(
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int* elements, const std::string& type, int numElements, int nodesPerElement);
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// API for vtkMappedUnstructuredGrid's implementation.
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vtkIdType GetNumberOfCells();
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int GetCellType(vtkIdType cellId);
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void GetCellPoints(vtkIdType cellId, vtkIdList* ptIds);
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void GetPointCells(vtkIdType ptId, vtkIdList* cellIds);
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int GetMaxCellSize();
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void GetIdsOfCellsOfType(int type, vtkIdTypeArray* array);
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int IsHomogeneous();
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// This container is read only -- these methods do nothing but print a
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// warning.
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void Allocate(vtkIdType numCells, int extSize = 1000);
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vtkIdType InsertNextCell(int type, vtkIdList* ptIds);
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vtkIdType InsertNextCell(int type, vtkIdType npts, const vtkIdType ptIds[])
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VTK_SIZEHINT(ptIds, npts);
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vtkIdType InsertNextCell(int type, vtkIdType npts, const vtkIdType ptIds[], vtkIdType nfaces,
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const vtkIdType faces[]) VTK_SIZEHINT(ptIds, npts) VTK_SIZEHINT(faces, nfaces);
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void ReplaceCell(vtkIdType cellId, int npts, const vtkIdType pts[]) VTK_SIZEHINT(pts, npts);
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protected:
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vtkCPExodusIIElementBlockImpl();
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~vtkCPExodusIIElementBlockImpl() override;
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private:
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vtkCPExodusIIElementBlockImpl(const vtkCPExodusIIElementBlockImpl&) = delete;
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void operator=(const vtkCPExodusIIElementBlockImpl&) = delete;
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// Convert between Exodus node ids and VTK point ids.
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static vtkIdType NodeToPoint(const int& id) { return static_cast<vtkIdType>(id - 1); }
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static int PointToNode(const vtkIdType& id) { return static_cast<int>(id + 1); }
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// Convenience methods to get pointers into the element array.
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int* GetElementStart(vtkIdType cellId) const
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{
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return this->Elements + (cellId * this->CellSize);
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}
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int* GetElementEnd(vtkIdType cellId) const
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{
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return this->Elements + (cellId * this->CellSize) + this->CellSize;
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}
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int* GetStart() const { return this->Elements; }
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int* GetEnd() const { return this->Elements + (this->NumberOfCells * this->CellSize); }
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int* Elements;
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int CellType;
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int CellSize;
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vtkIdType NumberOfCells;
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};
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vtkMakeExportedMappedUnstructuredGrid(
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vtkCPExodusIIElementBlock, vtkCPExodusIIElementBlockImpl, VTKIOEXODUS_EXPORT);
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#endif // vtkCPExodusIIElementBlock_h
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